pdftex[964] branches/stable/source: sync from tl 75248

commits+karl at tug.org commits+karl at tug.org
Sun May 18 00:44:20 CEST 2025


Revision: 964
          https://tug.org/svn/pdftex?view=revision&revision=964
Author:   karl
Date:     2025-05-18 00:44:20 +0200 (Sun, 18 May 2025)
Log Message:
-----------
sync from tl 75248

Modified Paths:
--------------
    branches/stable/source/Makefile
    branches/stable/source/src/build-aux/texinfo.tex
    branches/stable/source/src/configure
    branches/stable/source/src/libs/README
    branches/stable/source/src/libs/configure
    branches/stable/source/src/libs/libpng/ChangeLog
    branches/stable/source/src/libs/libpng/README
    branches/stable/source/src/libs/libpng/TLpatches/ChangeLog
    branches/stable/source/src/libs/libpng/TLpatches/TL-Changes
    branches/stable/source/src/libs/libpng/configure
    branches/stable/source/src/libs/libpng/libpng-src/ANNOUNCE
    branches/stable/source/src/libs/libpng/libpng-src/CHANGES
    branches/stable/source/src/libs/libpng/libpng-src/CMakeLists.txt
    branches/stable/source/src/libs/libpng/libpng-src/README
    branches/stable/source/src/libs/libpng/libpng-src/arm/arm_init.c
    branches/stable/source/src/libs/libpng/libpng-src/ci/README.md
    branches/stable/source/src/libs/libpng/libpng-src/ci/ci_lint.sh
    branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_cmake.sh
    branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_configure.sh
    branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_makefiles.sh
    branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_version.sh
    branches/stable/source/src/libs/libpng/libpng-src/ci/lib/ci.lib.sh
    branches/stable/source/src/libs/libpng/libpng-src/configure.ac
    branches/stable/source/src/libs/libpng/libpng-src/contrib/examples/pngpixel.c
    branches/stable/source/src/libs/libpng/libpng-src/contrib/libtests/pngimage.c
    branches/stable/source/src/libs/libpng/libpng-src/contrib/libtests/pngstest.c
    branches/stable/source/src/libs/libpng/libpng-src/contrib/tools/pngfix.c
    branches/stable/source/src/libs/libpng/libpng-src/example.c
    branches/stable/source/src/libs/libpng/libpng-src/libpng-manual.txt
    branches/stable/source/src/libs/libpng/libpng-src/libpng.3
    branches/stable/source/src/libs/libpng/libpng-src/libpngpf.3
    branches/stable/source/src/libs/libpng/libpng-src/mips/mips_init.c
    branches/stable/source/src/libs/libpng/libpng-src/png.5
    branches/stable/source/src/libs/libpng/libpng-src/png.c
    branches/stable/source/src/libs/libpng/libpng-src/png.h
    branches/stable/source/src/libs/libpng/libpng-src/pngconf.h
    branches/stable/source/src/libs/libpng/libpng-src/pngdebug.h
    branches/stable/source/src/libs/libpng/libpng-src/pngerror.c
    branches/stable/source/src/libs/libpng/libpng-src/pngget.c
    branches/stable/source/src/libs/libpng/libpng-src/pnginfo.h
    branches/stable/source/src/libs/libpng/libpng-src/pnglibconf.h
    branches/stable/source/src/libs/libpng/libpng-src/pngmem.c
    branches/stable/source/src/libs/libpng/libpng-src/pngpread.c
    branches/stable/source/src/libs/libpng/libpng-src/pngpriv.h
    branches/stable/source/src/libs/libpng/libpng-src/pngread.c
    branches/stable/source/src/libs/libpng/libpng-src/pngrio.c
    branches/stable/source/src/libs/libpng/libpng-src/pngrtran.c
    branches/stable/source/src/libs/libpng/libpng-src/pngrutil.c
    branches/stable/source/src/libs/libpng/libpng-src/pngset.c
    branches/stable/source/src/libs/libpng/libpng-src/pngstruct.h
    branches/stable/source/src/libs/libpng/libpng-src/pngtest.c
    branches/stable/source/src/libs/libpng/libpng-src/pngwio.c
    branches/stable/source/src/libs/libpng/libpng-src/pngwrite.c
    branches/stable/source/src/libs/libpng/libpng-src/pngwutil.c
    branches/stable/source/src/libs/libpng/libpng-src/powerpc/filter_vsx_intrinsics.c
    branches/stable/source/src/libs/libpng/libpng-src/powerpc/powerpc_init.c
    branches/stable/source/src/libs/libpng/libpng-src/scripts/libpng-config-head.in
    branches/stable/source/src/libs/libpng/libpng-src/scripts/libpng.pc.in
    branches/stable/source/src/libs/libpng/libpng-src/scripts/pnglibconf.dfa
    branches/stable/source/src/libs/libpng/libpng-src/scripts/pnglibconf.h.prebuilt
    branches/stable/source/src/libs/libpng/version.ac
    branches/stable/source/src/tardate.ac
    branches/stable/source/src/texk/README
    branches/stable/source/src/texk/configure
    branches/stable/source/src/texk/kpathsea/ChangeLog
    branches/stable/source/src/texk/kpathsea/NEWS
    branches/stable/source/src/texk/kpathsea/c-auto.in
    branches/stable/source/src/texk/kpathsea/c-ctype.h
    branches/stable/source/src/texk/kpathsea/c-memstr.h
    branches/stable/source/src/texk/kpathsea/configure
    branches/stable/source/src/texk/kpathsea/expand.c
    branches/stable/source/src/texk/kpathsea/version.ac
    branches/stable/source/src/texk/tests/TeXLive/TLUtils.pm
    branches/stable/source/src/texk/web2c/ChangeLog
    branches/stable/source/src/texk/web2c/Makefile.in
    branches/stable/source/src/texk/web2c/NEWS
    branches/stable/source/src/texk/web2c/configure
    branches/stable/source/src/texk/web2c/ctangleboot.cin
    branches/stable/source/src/texk/web2c/cwebboot.cin
    branches/stable/source/src/texk/web2c/cwebdir/ChangeLog
    branches/stable/source/src/texk/web2c/cwebdir/Makefile
    branches/stable/source/src/texk/web2c/cwebdir/comm-bs.ch
    branches/stable/source/src/texk/web2c/cwebdir/comm-mac.ch
    branches/stable/source/src/texk/web2c/cwebdir/comm-mini.ch
    branches/stable/source/src/texk/web2c/cwebdir/comm-w2c.ch
    branches/stable/source/src/texk/web2c/cwebdir/comm-w2c.h
    branches/stable/source/src/texk/web2c/cwebdir/comm-w32.ch
    branches/stable/source/src/texk/web2c/cwebdir/common.bux
    branches/stable/source/src/texk/web2c/cwebdir/common.c
    branches/stable/source/src/texk/web2c/cwebdir/common.h
    branches/stable/source/src/texk/web2c/cwebdir/common.w
    branches/stable/source/src/texk/web2c/cwebdir/ctang-w2c.ch
    branches/stable/source/src/texk/web2c/cwebdir/ctang-w32.ch
    branches/stable/source/src/texk/web2c/cwebdir/ctangle.c
    branches/stable/source/src/texk/web2c/cwebdir/ctangle.w
    branches/stable/source/src/texk/web2c/cwebdir/ctwill-hint.ch
    branches/stable/source/src/texk/web2c/cwebdir/ctwill-mini.ch
    branches/stable/source/src/texk/web2c/cwebdir/ctwill-w2c.ch
    branches/stable/source/src/texk/web2c/cwebdir/ctwill.bux
    branches/stable/source/src/texk/web2c/cwebdir/cweav-w2c.ch
    branches/stable/source/src/texk/web2c/cwebdir/cweav-w32.ch
    branches/stable/source/src/texk/web2c/cwebdir/cweave.w
    branches/stable/source/src/texk/web2c/cwebdir/po/cweb.pot
    branches/stable/source/src/texk/web2c/cwebdir/po/de/cweb.po
    branches/stable/source/src/texk/web2c/cwebdir/po/de/web2c-help.po
    branches/stable/source/src/texk/web2c/cwebdir/po/it/cweb.po
    branches/stable/source/src/texk/web2c/cwebdir/po/web2c-help.pot
    branches/stable/source/src/texk/web2c/cwebdir/tests/ham-sorted.tex
    branches/stable/source/src/texk/web2c/cwebdir/tests/ham.ch
    branches/stable/source/src/texk/web2c/cwebdir/tests/ham.ref
    branches/stable/source/src/texk/web2c/cwebdir/tests/ham.sref
    branches/stable/source/src/texk/web2c/cwebdir/tests/ham.tex
    branches/stable/source/src/texk/web2c/doc/luatex/luatex-math.tex
    branches/stable/source/src/texk/web2c/doc/luatex/luatex.pdf
    branches/stable/source/src/texk/web2c/etexdir/ChangeLog
    branches/stable/source/src/texk/web2c/help.h
    branches/stable/source/src/texk/web2c/lib/ChangeLog
    branches/stable/source/src/texk/web2c/lib/openclose.c
    branches/stable/source/src/texk/web2c/lib/texmfmp.c
    branches/stable/source/src/texk/web2c/pdftexdir/ChangeLog
    branches/stable/source/src/texk/web2c/pdftexdir/NEWS
    branches/stable/source/src/texk/web2c/pdftexdir/pdftex.web
    branches/stable/source/src/texk/web2c/pdftexdir/pdftex_version.h
    branches/stable/source/src/texk/web2c/synctexdir/ChangeLog
    branches/stable/source/src/texk/web2c/synctexdir/synctex.c
    branches/stable/source/src/texk/web2c/tangle.ch
    branches/stable/source/src/texk/web2c/tangleboot.pin
    branches/stable/source/src/texk/web2c/tests/fix-changefile-lines.py
    branches/stable/source/src/texk/web2c/tex.ch
    branches/stable/source/src/texk/web2c/web2c/ChangeLog
    branches/stable/source/src/texk/web2c/web2c/configure
    branches/stable/source/src/utils/README
    branches/stable/source/src/utils/configure
    branches/stable/source/src/version.ac
    branches/stable/source/sync-pdftex.sh

Added Paths:
-----------
    branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/
    branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_autoconf.sh
    branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_c.sh
    branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_cmake.sh
    branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_shell.sh
    branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/fixed.dfa
    branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/float-fixed.dfa
    branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/nocompile-limits.dfa
    branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/nolimits.dfa
    branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/read-full.dfa
    branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/write-full.dfa
    branches/stable/source/src/libs/libpng/libpng-src/scripts/cmake/PNGCheckLibconf.cmake
    branches/stable/source/src/texk/web2c/tests/invalidmu.tex

Removed Paths:
-------------
    branches/stable/source/src/libs/libpng/libpng-src/ci/ci_shellify.sh

Modified: branches/stable/source/Makefile
===================================================================
--- branches/stable/source/Makefile	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/Makefile	2025-05-17 22:44:20 UTC (rev 964)
@@ -32,6 +32,7 @@
 
 synctest:
 	svn status	  # if not clean, commit first or changes will be lost
+	# also svn update the TL source dir, and note revision.
 	./sync-pdftex.sh  # does not actually change anything.
 
 syncreal:

Modified: branches/stable/source/src/build-aux/texinfo.tex
===================================================================
--- branches/stable/source/src/build-aux/texinfo.tex	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/build-aux/texinfo.tex	2025-05-17 22:44:20 UTC (rev 964)
@@ -3,7 +3,7 @@
 % Load plain if necessary, i.e., if running under initex.
 \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
 %
-\def\texinfoversion{2025-01-31.21}
+\def\texinfoversion{2025-03-22.08}
 %
 % Copyright 1985, 1986, 1988, 1990-2025 Free Software Foundation, Inc.
 %
@@ -287,7 +287,6 @@
 % Avoid "undefined control sequence" errors.
 \def\currentchapterdefs{}
 \def\currentsectiondefs{}
-\def\currentsection{}
 \def\prevchapterdefs{}
 \def\prevsectiondefs{}
 \def\currentcolordefs{}
@@ -980,18 +979,51 @@
 \newif\ifpdf
 \newif\ifpdfmakepagedest
 
+% when pdftex is run in dvi mode, \pdfoutput is defined (so \pdfoutput=1
+% can be set).  So we test for \relax and 0 as well as being undefined.
+\ifx\pdfoutput\thisisundefined
+\else
+  \ifx\pdfoutput\relax
+  \else
+    \ifcase\pdfoutput
+    \else
+      \pdftrue
+    \fi
+  \fi
+\fi
+
+\newif\ifxetex
+\ifx\XeTeXrevision\thisisundefined\else
+  \xetextrue
+\fi
+
 \newif\ifluatex
 \ifx\luatexversion\thisisundefined\else
   \luatextrue
+  \ifnum\luatexversion>84
+    \pdftrue
+  \fi
 \fi
 
+\newif\ifpdforxetex
+\ifpdf
+  \pdforxetextrue
+\fi
+\ifxetex
+  \pdforxetextrue
+\fi
+
+
+
+% Whether to use non-ASCII bytes in internal link targets.  Presently this
+% is almost always on.
+\newif\iftxiuseunicodedestname
+\txiuseunicodedestnametrue
+
 %
 % For LuaTeX
 %
 
-\newif\iftxiuseunicodedestname
-\txiuseunicodedestnamefalse % For pdfTeX etc.
-
 \ifluatex
   % Use Unicode destination names
   \txiuseunicodedestnametrue
@@ -1045,7 +1077,7 @@
     %
   \endgroup
   \def\pdfescapestring#1{\directlua{PDFescstr('\luaescapestring{#1}')}}
-  \ifnum\luatexversion>84
+  \ifpdf
     % For LuaTeX >= 0.85
     \def\pdfdest{\pdfextension dest}
     \let\pdfoutput\outputmode
@@ -1068,34 +1100,7 @@
   \fi
 \fi
 
-% when pdftex is run in dvi mode, \pdfoutput is defined (so \pdfoutput=1
-% can be set).  So we test for \relax and 0 as well as being undefined.
-\ifx\pdfoutput\thisisundefined
-\else
-  \ifx\pdfoutput\relax
-  \else
-    \ifcase\pdfoutput
-    \else
-      \pdftrue
-    \fi
-  \fi
-\fi
 
-\newif\ifxetex
-\ifx\XeTeXrevision\thisisundefined\else
-  \xetextrue
-\fi
-
-\newif\ifpdforxetex
-\pdforxetexfalse
-\ifpdf
-  \pdforxetextrue
-\fi
-\ifxetex
-  \pdforxetextrue
-\fi
-
-
 % Output page labels information.
 % See PDF reference v.1.7 p.594, section 8.3.1.
 % Page label ranges must be increasing.
@@ -1388,9 +1393,6 @@
     \safewhatsit{\pdfdest name{\pdfdestname} xyz}%
   }
   %
-  % used to mark target names; must be expandable.
-  \def\pdfmkpgn#1{#1}
-  %
   % Adding outlines to PDF; macros for calculating structure of outlines
   % come from Petr Olsak
   \def\expnumber#1{\expandafter\ifx\csname#1\endcsname\relax 0%
@@ -1416,7 +1418,7 @@
       \def\pdfdestname{#4}%
     \fi
     %
-    \pdfoutline goto name{\pdfmkpgn{\pdfdestname}}#2{\pdfoutlinetext}%
+    \pdfoutline goto name{\pdfdestname}#2{\pdfoutlinetext}%
   }
   %
   \def\pdfmakeoutlines{%
@@ -1427,15 +1429,18 @@
 	\def\thischapnum{##2}%
 	\def\thissecnum{0}%
 	\def\thissubsecnum{0}%
+	\def\indexlastsec{chap\thischapnum}%
       }%
       \def\numsecentry##1##2##3##4{%
 	\advancenumber{chap\thischapnum}%
 	\def\thissecnum{##2}%
 	\def\thissubsecnum{0}%
+	\def\indexlastsec{sec\thissecnum}%
       }%
       \def\numsubsecentry##1##2##3##4{%
 	\advancenumber{sec\thissecnum}%
 	\def\thissubsecnum{##2}%
+	\def\indexlastsec{subsec\thissecnum}%
       }%
       \def\numsubsubsecentry##1##2##3##4{%
 	\advancenumber{subsec\thissubsecnum}%
@@ -1443,7 +1448,13 @@
       \def\thischapnum{0}%
       \def\thissecnum{0}%
       \def\thissubsecnum{0}%
+      \let\indexlastsec\empty
       %
+      % Index initials are subsidiary to whatever sectioning command just
+      % occurred, usually @appendix or @chapter but occasionally a lower level.
+      \def\idxinitialentry##1##2##3##4{%
+        \expandafter\advancenumber\expandafter{\indexlastsec}%
+      }%
       % use \def rather than \let here because we redefine \chapentry et
       % al. a second time, below.
       \def\appentry{\numchapentry}%
@@ -1455,9 +1466,6 @@
       \def\unnsubsecentry{\numsubsecentry}%
       \def\unnsubsubsecentry{\numsubsubsecentry}%
       %
-      % Treat index initials like @section.  Note that this is the wrong
-      % level if the index is not at the level of @appendix or @chapter.
-      \def\idxinitialentry{\numsecentry}%
       \readdatafile{toc}%
       %
       % Read toc second time, this time actually producing the outlines.
@@ -1482,18 +1490,6 @@
       \def\idxinitialentry##1##2##3##4{%
         \dopdfoutline{##1}{}{idx.##1.##2}{##4}}%
       %
-      % PDF outlines are displayed using system fonts, instead of
-      % document fonts.  Therefore we cannot use special characters,
-      % since the encoding is unknown.  For example, the eogonek from
-      % Latin 2 (0xea) gets translated to a | character.  Info from
-      % Staszek Wawrykiewicz, 19 Jan 2004 04:09:24 +0100.
-      %
-      % TODO this right, we have to translate 8-bit characters to
-      % their "best" equivalent, based on the @documentencoding.  Too
-      % much work for too little return.  Just use the ASCII equivalents
-      % we use for the index sort strings.
-      %
-      \indexnofonts
       \ifnodeseen\else \dopdfoutlinecontents \fi % for @contents at beginning
       \setupdatafile
       % We can have normal brace characters in the PDF outlines, unlike
@@ -1501,9 +1497,9 @@
       \def\{{\lbracecharliteral}%
       \def\}{\rbracecharliteral}%
       \catcode`\\=\active \otherbackslash
-      \input \tocreadfilename
+      \input \tocreadfilename\relax
+      \ifnodeseen \dopdfoutlinecontents \fi % for @contents at end
     \endgroup
-    \ifnodeseen \dopdfoutlinecontents \fi % for @contents at end
   }
   \def\dopdfoutlinecontents{%
     \expandafter\dopdfoutline\expandafter{\putwordTOC}{}{txi.CONTENTS}{}%
@@ -1541,7 +1537,7 @@
   %
   \def\pdflink#1{\pdflinkpage{#1}{#1}}%
   \def\pdflinkpage#1#2{%
-    \startlink attr{/Border [0 0 0]} goto name{\pdfmkpgn{#1}}
+    \startlink attr{/Border [0 0 0]} goto name{#1}
     \setcolor{\linkcolor}#2\endlink}
 \else
   % non-pdf mode
@@ -1644,18 +1640,20 @@
       % horizontal space being required in the PDF viewer.
       \def\partentry##1##2##3##4{}% ignore parts in the outlines
       \def\numchapentry##1##2##3##4{%
-        \dopdfoutline{##2 ##1}{1}{##3}{##4}}%
+        \dopdfoutline{##2 ##1}{1}{##3}{##4}%
+        \def\indexseclevel{2}}%
       \def\numsecentry##1##2##3##4{%
-        \dopdfoutline{##1}{2}{##3}{##4}}%
+        \dopdfoutline{##1}{2}{##3}{##4}%
+        \def\indexseclevel{3}}%
       \def\numsubsecentry##1##2##3##4{%
-        \dopdfoutline{##1}{3}{##3}{##4}}%
+        \dopdfoutline{##1}{3}{##3}{##4}%
+        \def\indexseclevel{4}}%
       \def\numsubsubsecentry##1##2##3##4{%
-        \dopdfoutline{##1}{4}{##3}{##4}}%
+        \dopdfoutline{##1}{4}{##3}{##4}%
+        \def\indexseclevel{5}}%
       %
-      % Note this is at the wrong level unless the index is in an @appendix
-      % or @chapter.
       \def\idxinitialentry##1##2##3##4{%
-         \dopdfoutline{##1}{2}{idx.##1.##2}{##4}}%
+         \dopdfoutline{##1}{\indexseclevel}{idx.##1.##2}{##4}}%
       %
       \let\appentry\numchapentry%
       \let\appsecentry\numsecentry%
@@ -1680,7 +1678,9 @@
       \def\{{\lbracecharliteral}%
       \def\}{\rbracecharliteral}%
       \catcode`\\=\active \otherbackslash
+      \xetexpreauxfile
       \input \tocreadfilename\relax
+      \xetexpostauxfile
       \ifnodeseen \dopdfoutlinecontents \fi % for @contents at end
     \endgroup
   }
@@ -5177,8 +5177,8 @@
   %
   \uccode`\1=`\{ \uppercase{\def\{{1}}%
   \uccode`\1=`\} \uppercase{\def\}{1}}%
-  \let\lbracechar\{%
-  \let\rbracechar\}%
+  \def\lbracechar##1{\{}%
+  \def\rbracechar##1{\}}%
   %
   %
   % We need to get rid of all macros, leaving only the arguments (if present).
@@ -5523,6 +5523,8 @@
   \tolerance = 9500
   \plainfrenchspacing
   \everypar = {}% don't want the \kern\-parindent from indentation suppression.
+  \let\entry\indexentry
+  \ifxetex\xetexpreauxfile\fi
   %
   % See comment in \requireopenindexfile.
   \def\indexname{#1}\ifx\indexname\indexisfl\def\indexname{f1}\fi
@@ -5548,6 +5550,7 @@
     \fi
   \fi
   \closein 1
+  \ifxetex\xetexpostauxfile\fi
 \endgroup}
 
 % Checked in @bye
@@ -5583,7 +5586,9 @@
       }%
     \else
       \begindoublecolumns
+      \ifxetex\xetexpreauxfile\fi
       \input \jobname.\indexname s
+      \ifxetex\xetexpostauxfile\fi
       \enddoublecolumns
     \fi
   }{%
@@ -5594,11 +5599,39 @@
     % should work because we (hopefully) don't otherwise use @ in index files.
     %\catcode`\@=12\relax
     \catcode`\@=0\relax
+    \ifxetex\xetexpreauxfile\fi
     \input \jobname.\indexname s
+    \ifxetex\xetexpostauxfile\fi
     \enddoublecolumns
   }%
 }
 
+\def\indexentry#1#2{%
+  \let\entrypagetarget\empty
+  \ifpdforxetex
+    % only link the index text to the page if no comma appears in the
+    % list of pages, i.e. there is only one page
+    \checkpagelistcomma{#2}\pagelistcomma
+    \expandafter\ifcase\pagelistcomma
+      \def\entrypagetarget{#2}%
+    \fi
+  \fi%
+  \entryinternal{#1}{#2}%
+}
+
+\def\checkpagelistcomma#1#2{%
+  \checkpagelistcommaxx#2#1,\finish
+}
+\def\checkpagelistcommaxx#1#2,#3\finish{%
+  \def\tmp{#3}%
+  \ifx\tmp\empty
+    \def#1{0\relax}
+  \else
+    \def#1{1\relax}
+  \fi
+}
+
+
 % These macros are used by the sorted index file itself.
 % Change them to control the appearance of the index.
 
@@ -5673,18 +5706,14 @@
 \def\doindexinitialentry#1{%
   \ifpdforxetex
     \global\advance\idxinitialno by 1
-    \def\indexlbrace{\{}
-    \def\indexrbrace{\}}
-    \def\indexbackslash{\realbackslash}
-    \def\indexatchar{\@}
+    \def\indexlbrace{\{}%
+    \def\indexrbrace{\}}%
+    \def\indexbackslash{\realbackslash}%
+    \def\indexatchar{\@}%
     \writetocentry{idxinitial}{\asis #1}{IDX\the\idxinitialno}%
     % The @asis removes a pair of braces around e.g. {@indexatchar} that
     % are output by texindex.
     %
-    \vbox to 0pt{}%
-    % This vbox fixes the \pdfdest location for double column formatting.
-    % Without it, the \pdfdest is output above topskip glue at the top
-    % of a column as this glue is not added until the first box.
     \pdfmkdest{idx.\asis #1.IDX\the\idxinitialno}%
   \fi
 }
@@ -5704,16 +5733,18 @@
 \newdimen\entrycontskip
 \entrycontskip=1em
 
-% for PDF output, whether to make the text of the entry a link to the page
-% number.  set for @contents and @shortcontents where there is only one
-% page number.
+% for PDF output, whether to make the text of the entry a link to the section.
+% set for @contents and @shortcontents.
 \newif\iflinkentrytext
 
-% \entry typesets a paragraph consisting of the text (#1), dot leaders, and
-% then page number (#2) flushed to the right margin.  It is used for index
-% and table of contents entries.  The paragraph is indented by \leftskip.
-% If \tocnodetarget is set, link text to the referenced node.
-\def\entry{%
+% \entryinternal typesets a paragraph consisting of the text (#1), dot
+% leaders, and then page number (#2) flushed to the right margin.  It is
+% used for index and table of contents entries.  The paragraph is indented
+% by \leftskip.
+% For PDF output, if \linkentrytexttrue and \tocnodetarget is set, link text
+% to the referenced node.  Else if \entrypagetarget is set, link text to the
+% page.
+\def\entryinternal{%
   \begingroup
     %
     % Start a new paragraph if necessary, so our assignments below can't
@@ -5761,7 +5792,11 @@
             \endlink
           \fi
         \else
-          \unhbox\boxA
+          \ifx\entrypagetarget\empty
+            \unhbox\boxA
+          \else
+            \pdflinkpage{\entrypagetarget}{\unhbox\boxA}%
+          \fi
         \fi
       \else
         \unhbox\boxA
@@ -6433,6 +6468,10 @@
 \parseargdef\subsubheading{\sectionheading{#1}{subsubsec}{Yomitfromtoc}{}
   \suppressfirstparagraphindent}
 
+% @xrefname - give text with printed name for linking to node and allow
+% referencing node, but do not print any heading.
+\parseargdef\xrefname{\donoderef{Yomitfromtoc}{#1}}%
+
 % These macros generate a chapter, section, etc. heading only
 % (including whitespace, linebreaking, etc. around it),
 % given all the information in convenient, parsed form.
@@ -6554,11 +6593,6 @@
     \chapfonts \rm
     \let\footnote=\errfootnoteheading % give better error message
     %
-    % Have to define \currentsection before calling \donoderef, because the
-    % xref code eventually uses it.  On the other hand, it has to be called
-    % after \pchapsepmacro, or the headline will change too soon.
-    \gdef\currentsection{#1}%
-    %
     % Only insert the separating space if we have a chapter/appendix
     % number, and don't print the unnumbered ``number''.
     \ifx\temptype\Ynothingkeyword
@@ -6585,7 +6619,7 @@
     % been typeset.  If the destination for the pdf outline is after the
     % text, then jumping from the outline may wind up with the text not
     % being visible, for instance under high magnification.
-    \donoderef{#2}%
+    \donoderef{#2}{#1}%
     %
     % Typeset the actual heading.
     \nobreak % Avoid page breaks at the interline glue.
@@ -6701,10 +6735,8 @@
     \ifx\temptype\Ynothingkeyword
       \setbox0 = \hbox{}%
       \def\toctype{unn}%
-      \gdef\currentsection{#1}%
     \else\ifx\temptype\Yomitfromtockeyword
-      % for @headings -- no section number, don't include in toc,
-      % and don't redefine \currentsection.
+      % for @headings -- no section number, don't include in toc.
       \setbox0 = \hbox{}%
       \def\toctype{omit}%
       \let\sectionlevel=\empty
@@ -6711,11 +6743,9 @@
     \else\ifx\temptype\Yappendixkeyword
       \setbox0 = \hbox{#4\enspace}%
       \def\toctype{app}%
-      \gdef\currentsection{#1}%
     \else
       \setbox0 = \hbox{#4\enspace}%
       \def\toctype{num}%
-      \gdef\currentsection{#1}%
     \fi\fi\fi
     %
     % Write the toc entry (before \donoderef).  See comments in \chapmacro.
@@ -6723,7 +6753,7 @@
     %
     % Write the node reference (= pdf destination for pdftex).
     % Again, see comments in \chapmacro.
-    \donoderef{#3}%
+    \donoderef{#3}{#1}%
     %
     % Interline glue will be inserted when the vbox is completed.
     % That glue will be a valid breakpoint for the page, since it'll be
@@ -6955,6 +6985,7 @@
 %
 \def\contents{%
   \startcontents{\putwordTOC}{\contentsmkdest}%
+    \ifxetex\xetexpreauxfile\fi
     \openin 1 \tocreadfilename\space
     \ifeof 1 \else
       \findsecnowidths
@@ -6966,6 +6997,7 @@
       \pdfmakeoutlines
     \fi
     \closein 1
+    \ifxetex\xetexpostauxfile\fi
   \endgroup
   \contentsendroman
 }
@@ -6999,11 +7031,13 @@
     \let\numsubsubsecentry = \numsecentry
     \let\appsubsubsecentry = \numsecentry
     \let\unnsubsubsecentry = \numsecentry
+    \ifxetex\xetexpreauxfile\fi
     \openin 1 \tocreadfilename\space
     \ifeof 1 \else
       \readtocfile
     \fi
     \closein 1
+    \ifxetex\xetexpostauxfile\fi
     \vfill \eject
     \contentsalignmacro % in case @setchapternewpage odd is in effect
   \endgroup
@@ -7167,6 +7201,7 @@
 \extrasecnoskip=0pt
 
 \let\tocnodetarget\empty
+\let\entrypagetarget\empty
 
 % \tocentry{TITLE}{SEC NO}{NODE}{PAGE}
 %
@@ -7174,7 +7209,7 @@
   \def\tocnodetarget{#3}%
   \def\secno{#2}%
   \ifx\empty\secno
-    \entry{#1}{#4}%
+    \entryinternal{#1}{#4}%
   \else
     \ifdim 0pt=\secnowidth
       \setbox0=\hbox{#2\hskip\labelspace\hskip\extrasecnoskip}%
@@ -7185,7 +7220,7 @@
         #2\hskip\labelspace\hskip\extrasecnoskip\hfill}%
     \fi
     \entrycontskip=\wd0
-    \entry{\box0 #1}{#4}%
+    \entryinternal{\box0 #1}{#4}%
   \fi
 }
 \newdimen\labelspace
@@ -8170,18 +8205,11 @@
   }
 \fi
 
-\let\E=\expandafter
-
 % Used at the time of macro expansion.
 % Argument is macro body with arguments substituted
 \def\scanmacro#1{%
   \newlinechar`\^^M
-  % expand the expansion of \eatleadingcr twice to maybe remove a leading
-  % newline (and \else and \fi tokens), then call \eatspaces on the result.
-  \def\xeatspaces##1{%
-    \E\E\E\E\E\E\E\eatspaces\E\E\E\E\E\E\E{\eatleadingcr##1%
-  }}%
-  \def\xempty##1{}%
+  \def\xeatspaces##1{\eatleadingcrthen\eatspaces{##1}}%
   %
   % Process the macro body under the current catcode regime.
   \scantokens{#1 at comment}%
@@ -8234,10 +8262,12 @@
 \unbrace{\gdef\trim@@@ #1 } #2@{#1}
 }
 
-{\catcode`\^^M=\other%
-\gdef\eatleadingcr#1{\if\noexpand#1\noexpand^^M\else\E#1\fi}}%
-% Warning: this won't work for a delimited argument
-% or for an empty argument
+% Trim a single leading ^^M off a string, then call #1
+{\catcode`\^^M=\active \catcode`\Q=3%
+\gdef\eatleadingcrthen #1#2{\eatlcra #1Q#2Q^^MQ}%
+\gdef\eatlcra #1#2Q^^M{\eatlcrb #1#2Q}%
+\gdef\eatlcrb #1Q#2Q#3Q{#1{#2}}%
+}
 
 % Trim a single trailing ^^M off a string.
 {\catcode`\^^M=\other \catcode`\Q=3%
@@ -8373,6 +8403,10 @@
 % <parameter list> is #, then the preceding argument is delimited by
 % an opening brace, and that opening brace is not consumed.
 
+% Make @ a letter, so that we can make private-to-Texinfo macro names.
+\edef\texiatcatcode{\the\catcode`\@}
+\catcode `@=11\relax
+
 % Parse the optional {params} list to @macro or @rmacro.
 % Set \paramno to the number of arguments,
 % and \paramlist to a parameter text for the macro (e.g. #1,#2,#3 for a
@@ -8385,7 +8419,7 @@
 % That gets used by \mbodybackslash (above).
 %
 % If there are 10 or more arguments, a different technique is used: see
-% \parsemmanyargdef.
+% \parsemmanyargdef@@.
 %
 \def\parsemargdef#1;{%
   \paramno=0\def\paramlist{}%
@@ -8392,7 +8426,6 @@
   \let\hash\relax
   % \hash is redefined to `#' later to get it into definitions
   \let\xeatspaces\relax
-  \let\xempty\relax
   \parsemargdefxxx#1,;,%
   \ifnum\paramno<10\relax\else
     \paramno0\relax
@@ -8404,11 +8437,9 @@
   \else \let\next=\parsemargdefxxx
     \advance\paramno by 1
     \expandafter\edef\csname macarg.\eatspaces{#1}\endcsname
-        {\xeatspaces{\hash\the\paramno\noexpand\xempty{}}}%
+        {\xeatspaces{\hash\the\paramno}}%
     \edef\paramlist{\paramlist\hash\the\paramno,}%
   \fi\next}
-% the \xempty{} is to give \eatleadingcr an argument in the case of an
-% empty macro argument.
 
 % \parsemacbody, \parsermacbody
 %
@@ -8419,15 +8450,13 @@
 % body to be transformed.
 % Set \macrobody to the body of the macro, and call \macrodef.
 %
+\catcode `\@\texiatcatcode
 {\catcode`\ =\other\long\gdef\parsemacbody#1 at end macro{%
 \xdef\macrobody{\eatcr{#1}}\endgroup\macrodef}}%
 {\catcode`\ =\other\long\gdef\parsermacbody#1 at end rmacro{%
 \xdef\macrobody{\eatcr{#1}}\endgroup\macrodef}}%
+\catcode `\@=11\relax
 
-% Make @ a letter, so that we can make private-to-Texinfo macro names.
-\edef\texiatcatcode{\the\catcode`\@}
-\catcode `@=11\relax
-
 %%%%%%%%%%%%%% Code for > 10 arguments only   %%%%%%%%%%%%%%%%%%
 
 % If there are 10 or more arguments, a different technique is used, where the
@@ -8687,15 +8716,13 @@
         \noexpand\expandafter
         \expandafter\noexpand\csname\the\macname @@\endcsname}%
       \expandafter\xdef\csname\the\macname @@\endcsname##1{%
-          \noexpand\passargtomacro
-          \expandafter\noexpand\csname\the\macname @@@\endcsname{##1,}}%
+        \noexpand\passargtomacro
+        \expandafter\noexpand\csname\the\macname @@@\endcsname{##1,}}%
       \expandafter\xdef\csname\the\macname @@@\endcsname##1{%
-          \expandafter\noexpand\csname\the\macname @@@@\endcsname ##1}%
-      \expandafter\expandafter
-      \expandafter\xdef
-      \expandafter\expandafter
-        \csname\the\macname @@@@\endcsname\paramlist{%
-          \endgroup\noexpand\scanmacro{\macrobody}}%
+        \expandafter\noexpand\csname\the\macname @@@@\endcsname ##1}%
+      \expandaftergroup{\expandafter\xdef\csname\the\macname @@@@\endcsname}%
+                       \paramlist{%
+        \endgroup\noexpand\scanmacro{\macrobody}}%
     \else % 10 or more:
       \expandafter\xdef\csname\the\macname\endcsname{%
         \noexpand\getargvals@{\the\macname}{\argl}%
@@ -8707,6 +8734,16 @@
 
 \catcode `\@\texiatcatcode\relax % end private-to-Texinfo catcodes
 
+% utility definition to avoid excessive use of \expandafter.  call
+% as \expandaftergroup{CONTENT}\WORD to expand \WORD exactly once and remove
+% braces around CONTENT.
+\def\expandaftergroup#1#2{%
+  \expandafter\expandaftergroupx\expandafter{#2}{#1}%
+}
+\def\expandaftergroupx#1#2{%
+  #2#1%
+}
+
 \def\norecurse#1{\bgroup\cslet{#1}{macsave.#1}}
 
 
@@ -8876,9 +8913,8 @@
     \expandafter\noexpand
     \csname\the\macname @@@\endcsname##1\noexpand\endlinemacro
   }
-  \expandafter\expandafter
-  \expandafter\xdef
-  \expandafter\expandafter\csname\the\macname @@@\endcsname\paramlist{%
+  \expandaftergroup{\expandafter\xdef\csname\the\macname @@@\endcsname}%
+                     \paramlist{%
     \newlinechar=13 % split \macrobody into lines
     \noexpand\scantokens{\macrobody}%
   }
@@ -8953,11 +8989,11 @@
 \let\lastnode=\empty
 
 % Write a cross-reference definition for the current node.  #1 is the
-% type (Ynumbered, Yappendix, Ynothing).
+% type (Ynumbered, Yappendix, Ynothing).  #2 is the section title.
 %
-\def\donoderef#1{%
+\def\donoderef#1#2{%
   \ifx\lastnode\empty\else
-    \setref{\lastnode}{#1}%
+    \setref{\lastnode}{#1}{#2}%
     \global\let\lastnode=\empty
     \setnodeseenonce
   \fi
@@ -8978,14 +9014,21 @@
 %
 \def\savesf{\relax \ifhmode \savesfregister=\spacefactor \fi}
 \def\restoresf{\relax \ifhmode \spacefactor=\savesfregister \fi}
-\def\anchor#1{\savesf \setref{#1}{Ynothing}\restoresf \ignorespaces}
+\def\anchor#1{%
+  \savesf \setref{#1}{Yanchor}{#1}\restoresf \ignorespaces
+}
 
-% \setref{NAME}{SNT} defines a cross-reference point NAME (a node or an
-% anchor), which consists of three parts:
-% 1) NAME-title - the current sectioning name taken from \currentsection,
-%                 or the anchor name.
-% 2) NAME-snt   - section number and type, passed as the SNT arg, or
-%                 empty for anchors.
+% @namedanchor{NAME, XREFNAME} -- define xref target at arbitrary point
+% with label text for cross-references to it.
+\def\namedanchor#1{\donamedanchor#1\finish}%
+\def\donamedanchor#1,#2\finish{%
+  \savesf \setref{#1}{Yanchor}{\ignorespaces #2\unskip}\restoresf \ignorespaces
+}
+
+% \setref{NAME}{SNT}{TITLE} defines a cross-reference point NAME (a node
+% or an anchor), which consists of three parts:
+% 1) NAME-title - the current sectioning name
+% 2) NAME-snt   - section number and type, passed as the SNT arg.
 % 3) NAME-pg    - the page number.
 %
 % This is called from \donoderef, \anchor, and \dofloat.  In the case of
@@ -8992,7 +9035,7 @@
 % floats, there is an additional part, which is not written here:
 % 4) NAME-lof   - the text as it should appear in a @listoffloats.
 %
-\def\setref#1#2{%
+\def\setref#1#2#3{%
   \pdfmkdest{#1}%
   \iflinks
     {%
@@ -9004,7 +9047,7 @@
 	\write\auxfile{@xrdef{#1-% #1 of \setref, expanded by the \edef
 	  ##1}{##2}}% these are parameters of \writexrdef
       }%
-      \toks0 = \expandafter{\currentsection}%
+      \toks0 = {#3}%
       \immediate \writexrdef{title}{\the\toks0 }%
       \immediate \writexrdef{snt}{\csname #2\endcsname}% \Ynumbered etc.
       \safewhatsit{\writexrdef{pg}{\folio}}% will be written later, at \shipout
@@ -9058,15 +9101,7 @@
   \setbox\infofilenamebox = \hbox{\infofilename\unskip}%
   %
   \startxreflink{#1}{#4}%
-  {%
-    % Have to otherify everything special to allow the \csname to
-    % include an _ in the xref name, etc.
-    \indexnofonts
-    \turnoffactive
-    \def\value##1{##1}%
-    \expandafter\global\expandafter\let\expandafter\Xthisreftitle
-      \csname XR#1-title\endcsname
-  }%
+  \getrefx{#1-title}\Xthisreftitle
   %
   % Float references are printed completely differently: "Figure 1.2"
   % instead of "[somenode], p.3".  \iffloat distinguishes them by
@@ -9099,7 +9134,6 @@
       % Cross-manual reference with a printed manual name.
       %
       \crossmanualxref{\cite{\printedmanual\unskip}}%
-    %
     \else\ifdim \wd\infofilenamebox > 0pt
       % Cross-manual reference with only an info filename (arg 4), no
       % printed manual name (arg 5).  This is essentially the same as
@@ -9106,14 +9140,17 @@
       % the case above; we output the filename, since we have nothing else.
       %
       \crossmanualxref{\code{\infofilename\unskip}}%
-    %
     \else
       % Reference within this manual.
       %
-      % Only output a following space if the -snt ref is nonempty, as the ref
-      % will be empty for @unnumbered and @anchor.
-      \setbox2 = \hbox{\ignorespaces \refx{#1-snt}}%
-      \ifdim \wd2 > 0pt \refx{#1-snt}\space\fi
+      % Only output a following space if the -snt ref is nonempty, as is
+      % the case for @unnumbered and @anchor.
+      \getrefx{#1-snt}\tmp
+      \ifx\tmp\empty\else
+        \ifx\tmp\Yanchor\else
+          \tmp\space
+        \fi
+      \fi
       %
       % output the `[mynode]' via the macro below so it can be overridden.
       \xrefprintnodename\printedrefname
@@ -9169,7 +9206,7 @@
         \else
           % Otherwise just copy the Info node name.
           \def\printedrefname{\ignorespaces #1}%
-        \fi%
+        \fi
       \fi
     \fi
   \fi
@@ -9201,7 +9238,7 @@
        \ifnum\filenamelength>0
          goto file{\the\filename.pdf} name{\pdfdestname}%
        \else
-         goto name{\pdfmkpgn{\pdfdestname}}%
+         goto name{\pdfdestname}%
        \fi
      \else % XeTeX
        \ifnum\filenamelength>0
@@ -9281,6 +9318,7 @@
 %
 \def\Ynothing{}
 \def\Yomitfromtoc{}
+\def\Yanchor{\isanchor} \let\isanchor\relax
 \def\Ynumbered{%
   \ifnum\secno=0
     \putwordChapter at tie \the\chapno
@@ -9307,14 +9345,7 @@
 
 % \refx{NAME} - reference a cross-reference string named NAME.
 \def\refx#1{%
-  \requireauxfile
-  {%
-    \indexnofonts
-    \turnoffactive
-    \def\value##1{##1}%
-    \expandafter\global\expandafter\let\expandafter\thisrefX
-      \csname XR#1\endcsname
-  }%
+  \getrefx{#1}\thisrefX
   \ifx\thisrefX\relax
     % If not defined, say something at least.
     \angleleft un\-de\-fined\angleright
@@ -9335,6 +9366,17 @@
   \fi
 }
 
+% Set #2 to xref string #1
+\def\getrefx#1#2{%
+  \requireauxfile
+  {%
+    \indexnofonts
+    \turnoffactive
+    \def\value##1{##1}%
+    \expandafter\global\expandafter\let\expandafter#2\csname XR#1\endcsname
+  }%
+}
+
 % This is the macro invoked by entries in the aux file.  Define a control
 % sequence for a cross-reference target (we prepend XR to the control sequence
 % name to avoid collisions).  The value is the page number.  If this is a float
@@ -9399,6 +9441,7 @@
 % Read the last existing aux file, if any.  No error if none exists.
 %
 \def\tryauxfile{%
+  \ifxetex\xetexpreauxfile\fi
   \openin 1 \jobname.aux
   \ifeof 1 \else
     \readdatafile{aux}%
@@ -9405,6 +9448,7 @@
     \global\havexrefstrue
   \fi
   \closein 1
+  \ifxetex\xetexpostauxfile\fi
 }
 
 \def\setupdatafile{%
@@ -9790,14 +9834,15 @@
       \global\advance\floatno by 1
       %
       {%
-        % This magic value for \currentsection is output by \setref as the
-        % XREFLABEL-title value.  \xrefX uses it to distinguish float
+        % This magic value for the third argument of \setref is output as
+        % the XREFLABEL-title value.  \xrefX uses it to distinguish float
         % labels (which have a completely different output format) from
         % node and anchor labels.  And \xrdef uses it to construct the
         % lists of floats.
         %
-        \edef\currentsection{\floatmagic=\safefloattype}%
-        \setref{\floatlabel}{Yfloat}%
+        \edef\tmp{\noexpand\setref{\floatlabel}{Yfloat}%
+                  {\floatmagic=\safefloattype}}%
+        \tmp
       }%
     \fi
     %
@@ -9919,7 +9964,7 @@
 
 % #1 is the control sequence we are passed; we expand into a conditional
 % which is true if #1 represents a float ref.  That is, the magic
-% \currentsection value which we \setref above.
+% value which we passed to \setref above.
 %
 \def\iffloat#1{\expandafter\doiffloat#1==\finish}
 %
@@ -9976,6 +10021,7 @@
   \toksA = \expandafter{\csname XR#1-lof\endcsname}%
   %
   % use the same \entry macro we use to generate the TOC and index.
+  \let\entry\entryinternal
   \edef\writeentry{\noexpand\entry{\the\toksA}{\csname XR#1-pg\endcsname}}%
   \writeentry
 }}
@@ -10071,17 +10117,24 @@
   \fi
 \fi
 
+\let\xetexpreauxfile\relax
+\let\xetexpostauxfile\relax
+
 % Set I/O by bytes instead of UTF-8 sequence for XeTeX and LuaTex
 % for non-UTF-8 (byte-wise) encodings.
 %
 \def\setbytewiseio{%
   \ifxetex
-    \XeTeXdefaultencoding "bytes"  % For subsequent files to be read
-    \XeTeXinputencoding "bytes"  % For document root file
-    % Unfortunately, there seems to be no corresponding XeTeX command for
-    % output encoding.  This is a problem for auxiliary index and TOC files.
-    % The only solution would be perhaps to write out @U{...} sequences in
-    % place of non-ASCII characters.
+    % For document root file
+    \XeTeXinputencoding "bytes"
+    %
+    % Setting for subsequent files to be read with @include.
+    \XeTeXdefaultencoding "bytes"
+    %
+    % Use UTF-8 for reading auxiliary index and TOC files, which are
+    % always output in UTF-8 with XeTeX.
+    \def\xetexpreauxfile{\XeTeXdefaultencoding "UTF-8"}%
+    \def\xetexpostauxfile{\XeTeXdefaultencoding "bytes"}%
   \fi
 
   \ifluatex
@@ -10713,12 +10766,12 @@
 
 % Suppress ligature creation from adjacent characters.
 \ifluatex
-  \def\nolig{{}}
-\else
   % Braces do not suppress ligature creation in LuaTeX, e.g. in of{}fice
   % to suppress the "ff" ligature.  Using a kern appears to be the only
   % workaround.
   \def\nolig{\kern0pt{}}
+\else
+  \def\nolig{{}}
 \fi
 
 % https://en.wikipedia.org/wiki/Plane_(Unicode)#Basic_M

Modified: branches/stable/source/src/configure
===================================================================
--- branches/stable/source/src/configure	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/configure	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for TeX Live 2024-03-10.
+# Generated by GNU Autoconf 2.72 for TeX Live 2025-03-07.
 #
 # Report bugs to <tex-k at tug.org>.
 #
@@ -614,8 +614,8 @@
 # Identity of this package.
 PACKAGE_NAME='TeX Live'
 PACKAGE_TARNAME='tex-live'
-PACKAGE_VERSION='2024-03-10'
-PACKAGE_STRING='TeX Live 2024-03-10'
+PACKAGE_VERSION='2025-03-07'
+PACKAGE_STRING='TeX Live 2025-03-07'
 PACKAGE_BUGREPORT='tex-k at tug.org'
 PACKAGE_URL=''
 
@@ -1549,7 +1549,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures TeX Live 2024-03-10 to adapt to many kinds of systems.
+'configure' configures TeX Live 2025-03-07 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1624,7 +1624,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of TeX Live 2024-03-10:";;
+     short | recursive ) echo "Configuration of TeX Live 2025-03-07:";;
    esac
   cat <<\_ACEOF
 
@@ -1945,7 +1945,7 @@
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-TeX Live configure 2024-03-10
+TeX Live configure 2025-03-07
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -2653,7 +2653,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by TeX Live $as_me 2024-03-10, which was
+It was created by TeX Live $as_me 2025-03-07, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -12549,7 +12549,7 @@
 
 # Define the identity of the package.
  PACKAGE='tex-live'
- VERSION='2024-03-10'
+ VERSION='2025-03-07'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -26733,7 +26733,7 @@
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by TeX Live $as_me 2024-03-10, which was
+This file was extended by TeX Live $as_me 2025-03-07, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -26792,7 +26792,7 @@
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-TeX Live config.status 2024-03-10
+TeX Live config.status 2025-03-07
 configured by $0, generated by GNU Autoconf 2.72,
   with options \\"\$ac_cs_config\\"
 
@@ -28759,11 +28759,11 @@
 test "x$srcdir" = x. || msg_compiling="$msg_compiling
       from sources in $kpse_src"
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result:
-** Configuration summary for $PACKAGE_STRING (2025$with_banner_add):
+** Configuration summary for $PACKAGE_STRING (2026/dev$with_banner_add):
 
    $msg_compiling" >&5
 printf "%s\n" "
-** Configuration summary for $PACKAGE_STRING (2025$with_banner_add):
+** Configuration summary for $PACKAGE_STRING (2026/dev$with_banner_add):
 
    $msg_compiling" >&6; }
 case $kpse_src$kpse_bld in

Modified: branches/stable/source/src/libs/README
===================================================================
--- branches/stable/source/src/libs/README	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/README	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,4 @@
-$Id: README 73588 2025-01-25 02:34:51Z kakuto $
+$Id: README 75188 2025-05-12 20:59:34Z kakuto $
 Public domain.  Originally created by Karl Berry, 2005.
 
 Libraries we compile for TeX Live.
@@ -28,7 +28,7 @@
   https://sourceforge.net/projects/silgraphite/files/graphite2/
   (requires C++11)
 
-harfbuzz 10.2.0 - checked 12jan25
+harfbuzz 11.2.1 - checked 13may25
   https://github.com/harfbuzz/harfbuzz/releases/latest
 
 icu 76.1 - checked 27oct24 (requires C++17, e.g., g++13)
@@ -37,10 +37,9 @@
 libpaper 1.1.29 - checked 07jan24
   https://ftp.debian.org/debian/pool/main/libp/libpaper/
 
-libpng 1.6.46 - checked 25jan25
+libpng 1.6.48 - checked 01may25
   https://sourceforge.net/projects/libpng/files/ - used by many
 
-lua 5.2.4
 lua 5.3.6 - checked 04oct20
   https://www.lua.org/ftp/
   Lua updates must be done carefully, by the LuaTeX maintainer,
@@ -53,7 +52,7 @@
 mpfi 1.5.4 - checked 1feb24
   https://perso.ens-lyon.fr/nathalie.revol/software.html#download
   
-mpfr 4.2.1 - checked 1feb24
+mpfr 4.2.2 - checked 21mar25
   https://ftp.gnu.org/gnu/mpfr/
 
 pixman 0.42.2 - no longer checked

Modified: branches/stable/source/src/libs/configure
===================================================================
--- branches/stable/source/src/libs/configure	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/configure	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for TeX Live libs 2025.
+# Generated by GNU Autoconf 2.72 for TeX Live libs 2026/dev.
 #
 # Report bugs to <tex-k at tug.org>.
 #
@@ -603,8 +603,8 @@
 # Identity of this package.
 PACKAGE_NAME='TeX Live libs'
 PACKAGE_TARNAME='tex-live-libs'
-PACKAGE_VERSION='2025'
-PACKAGE_STRING='TeX Live libs 2025'
+PACKAGE_VERSION='2026/dev'
+PACKAGE_STRING='TeX Live libs 2026/dev'
 PACKAGE_BUGREPORT='tex-k at tug.org'
 PACKAGE_URL=''
 
@@ -1471,7 +1471,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures TeX Live libs 2025 to adapt to many kinds of systems.
+'configure' configures TeX Live libs 2026/dev to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1542,7 +1542,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of TeX Live libs 2025:";;
+     short | recursive ) echo "Configuration of TeX Live libs 2026/dev:";;
    esac
   cat <<\_ACEOF
 
@@ -1839,7 +1839,7 @@
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-TeX Live libs configure 2025
+TeX Live libs configure 2026/dev
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -1999,7 +1999,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by TeX Live libs $as_me 2025, which was
+It was created by TeX Live libs $as_me 2026/dev, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -7617,7 +7617,7 @@
 
 # Define the identity of the package.
  PACKAGE='tex-live-libs'
- VERSION='2025'
+ VERSION='2026/dev'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -8650,7 +8650,7 @@
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by TeX Live libs $as_me 2025, which was
+This file was extended by TeX Live libs $as_me 2026/dev, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -8709,7 +8709,7 @@
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-TeX Live libs config.status 2025
+TeX Live libs config.status 2026/dev
 configured by $0, generated by GNU Autoconf 2.72,
   with options \\"\$ac_cs_config\\"
 

Modified: branches/stable/source/src/libs/libpng/ChangeLog
===================================================================
--- branches/stable/source/src/libs/libpng/ChangeLog	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/ChangeLog	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,3 +1,13 @@
+2025-05-01 Akira Kakuto  <kakuto at jcom.zaq.ne.jp>
+
+	Import libpng-1.6.48.
+	* version.ac: Adjust.
+
+2025-03-09 Akira Kakuto  <kakuto at jcom.zaq.ne.jp>
+
+	Import libpng-1.6.47.
+	* version.ac: Adjust.
+
 2025-01-25 Akira Kakuto  <kakuto at jcom.zaq.ne.jp>
 
 	Import libpng-1.6.46.

Modified: branches/stable/source/src/libs/libpng/README
===================================================================
--- branches/stable/source/src/libs/libpng/README	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/README	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,4 @@
-	Building libpng-1.6.45 as part of the TL tree
+	Building libpng-1.6.48 as part of the TL tree
 	=============================================
 
 This directory libs/libpng/ uses a proxy Makefile.am to build the libpng library
@@ -14,4 +14,4 @@
 =============================
 
 2009-07-23	Peter Breitenlohner <peb at mppmu.mpg.de>
-2025-01-25	Akira Kakuto <kakuto at jcom.zaq.ne.jp>
+2025-05-01	Akira Kakuto <kakuto at jcom.zaq.ne.jp>

Modified: branches/stable/source/src/libs/libpng/TLpatches/ChangeLog
===================================================================
--- branches/stable/source/src/libs/libpng/TLpatches/ChangeLog	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/TLpatches/ChangeLog	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,3 +1,11 @@
+2025-05-01  Akira Kakuto <kakuto at jcom.zaq.ne.jp>
+
+	Import libpng-1.6.48.
+
+2025-03-09  Akira Kakuto <kakuto at jcom.zaq.ne.jp>
+
+	Import libpng-1.6.47.
+
 2025-01-25  Akira Kakuto <kakuto at jcom.zaq.ne.jp>
 
 	Import libpng-1.6.46.

Modified: branches/stable/source/src/libs/libpng/TLpatches/TL-Changes
===================================================================
--- branches/stable/source/src/libs/libpng/TLpatches/TL-Changes	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/TLpatches/TL-Changes	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,5 +1,5 @@
-Changes applied to the libpng-1.6.46/ tree as obtained from:
-	https://sourceforge.net/projects/libpng/files/libpng16/1.6.46/
+Changes applied to the libpng-1.6.48/ tree as obtained from:
+	https://sourceforge.net/projects/libpng/files/libpng16/1.6.48/
 
 Copied:
 	scripts/pnglibconf.h.prebuilt -> pnglibconf.h
@@ -11,7 +11,6 @@
 	.editorconfig
 	.editorconfig-checker.json
 	.gitignore
-	.travis.yml
 	.yamllint.yml
 	Makefile.in
 	aclocal.m4

Modified: branches/stable/source/src/libs/libpng/configure
===================================================================
--- branches/stable/source/src/libs/libpng/configure	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/configure	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for libpng (TeX Live) 1.6.46.
+# Generated by GNU Autoconf 2.72 for libpng (TeX Live) 1.6.48.
 #
 # Report bugs to <tex-k at tug.org>.
 #
@@ -604,8 +604,8 @@
 # Identity of this package.
 PACKAGE_NAME='libpng (TeX Live)'
 PACKAGE_TARNAME='libpng--tex-live-'
-PACKAGE_VERSION='1.6.46'
-PACKAGE_STRING='libpng (TeX Live) 1.6.46'
+PACKAGE_VERSION='1.6.48'
+PACKAGE_STRING='libpng (TeX Live) 1.6.48'
 PACKAGE_BUGREPORT='tex-k at tug.org'
 PACKAGE_URL=''
 
@@ -1342,7 +1342,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures libpng (TeX Live) 1.6.46 to adapt to many kinds of systems.
+'configure' configures libpng (TeX Live) 1.6.48 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1414,7 +1414,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng (TeX Live) 1.6.46:";;
+     short | recursive ) echo "Configuration of libpng (TeX Live) 1.6.48:";;
    esac
   cat <<\_ACEOF
 
@@ -1534,7 +1534,7 @@
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng (TeX Live) configure 1.6.46
+libpng (TeX Live) configure 1.6.48
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -1861,7 +1861,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by libpng (TeX Live) $as_me 1.6.46, which was
+It was created by libpng (TeX Live) $as_me 1.6.48, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -4822,7 +4822,7 @@
 
 # Define the identity of the package.
  PACKAGE='libpng--tex-live-'
- VERSION='1.6.46'
+ VERSION='1.6.48'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -7996,7 +7996,7 @@
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libpng (TeX Live) $as_me 1.6.46, which was
+This file was extended by libpng (TeX Live) $as_me 1.6.48, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -8064,7 +8064,7 @@
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-libpng (TeX Live) config.status 1.6.46
+libpng (TeX Live) config.status 1.6.48
 configured by $0, generated by GNU Autoconf 2.72,
   with options \\"\$ac_cs_config\\"
 

Modified: branches/stable/source/src/libs/libpng/libpng-src/ANNOUNCE
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ANNOUNCE	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/ANNOUNCE	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,5 +1,5 @@
-libpng 1.6.46 - January 23, 2025
-================================
+libpng 1.6.48 - April 30, 2025
+==============================
 
 This is a public release of libpng, intended for use in production code.
 
@@ -9,13 +9,13 @@
 
 Source files with LF line endings (for Unix/Linux):
 
- * libpng-1.6.46.tar.xz (LZMA-compressed, recommended)
- * libpng-1.6.46.tar.gz (deflate-compressed)
+ * libpng-1.6.48.tar.xz (LZMA-compressed, recommended)
+ * libpng-1.6.48.tar.gz (deflate-compressed)
 
 Source files with CRLF line endings (for Windows):
 
- * lpng1646.7z (LZMA-compressed, recommended)
- * lpng1646.zip (deflate-compressed)
+ * lpng1648.7z (LZMA-compressed, recommended)
+ * lpng1648.zip (deflate-compressed)
 
 Other information:
 
@@ -25,17 +25,17 @@
  * TRADEMARK.md
 
 
-Changes from version 1.6.45 to version 1.6.46
+Changes from version 1.6.47 to version 1.6.48
 ---------------------------------------------
 
- * Added support for the mDCV and cLLI chunks.
-   (Contributed by John Bowler)
- * Fixed a build issue affecting C89 compilers.
-   This was a regression introduced in libpng-1.6.45.
-   (Contributed by John Bowler)
- * Added makefile.c89, specifically for testing C89 compilers.
- * Cleaned up contrib/pngminus: corrected an old typo, removed an old
-   workaround, and updated the CMake file.
+ * Fixed the floating-point version of the mDCv setter `png_set_mDCv`.
+   (Reported by Mohit Bakshi; fixed by John Bowler)
+ * Added #error directives to discourage the inclusion of private
+   libpng implementation header files in PNG-supporting applications.
+ * Added the CMake build option `PNG_LIBCONF_HEADER`, to be used as an
+   alternative to `DFA_XTRA`.
+ * Removed the Travis CI configuration files, with heartfelt thanks for
+   their generous support of our project over the past five years!
 
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.

Modified: branches/stable/source/src/libs/libpng/libpng-src/CHANGES
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/CHANGES	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/CHANGES	2025-05-17 22:44:20 UTC (rev 964)
@@ -6239,6 +6239,28 @@
   Cleaned up contrib/pngminus: corrected an old typo, removed an old
     workaround, and updated the CMake file.
 
+Version 1.6.47 [February 18, 2025]
+  Modified the behaviour of colorspace chunks in order to adhere
+    to the new precedence rules formulated in the latest draft of
+    the PNG Specification.
+    (Contributed by John Bowler)
+  Fixed a latent bug in `png_write_iCCP`.
+    This would have been a read-beyond-end-of-malloc vulnerability,
+    introduced early in the libpng-1.6.0 development, yet (fortunately!)
+    it was inaccessible before the above-mentioned modification of the
+    colorspace precedence rules, due to pre-existing colorspace checks.
+    (Reported by Bob Friesenhahn; fixed by John Bowler)
+
+Version 1.6.48 [April 30, 2025]
+  Fixed the floating-point version of the mDCv setter `png_set_mDCv`.
+    (Reported by Mohit Bakshi; fixed by John Bowler)
+  Added #error directives to discourage the inclusion of private
+    libpng implementation header files in PNG-supporting applications.
+  Added the CMake build option `PNG_LIBCONF_HEADER`, to be used as an
+    alternative to `DFA_XTRA`.
+  Removed the Travis CI configuration files, with heartfelt thanks for
+    their generous support of our project over the past five years!
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.
 Subscription is required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement

Modified: branches/stable/source/src/libs/libpng/libpng-src/CMakeLists.txt
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/CMakeLists.txt	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/CMakeLists.txt	2025-05-17 22:44:20 UTC (rev 964)
@@ -14,11 +14,11 @@
 #
 # SPDX-License-Identifier: libpng-2.0
 
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.14...4.0)
 
 set(PNGLIB_MAJOR 1)
 set(PNGLIB_MINOR 6)
-set(PNGLIB_REVISION 46)
+set(PNGLIB_REVISION 48)
 set(PNGLIB_SUBREVISION 0)
 #set(PNGLIB_SUBREVISION "git")
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_REVISION})
@@ -34,7 +34,8 @@
 
 # Allow the users to specify an application-specific API prefix for libpng
 # vendoring purposes. A standard libpng build should have no such prefix.
-set(PNG_PREFIX ""
+set(PNG_PREFIX
+    ""
     CACHE STRING "Prefix to prepend to the API function names")
 
 # Allow the users to override the postfix appended to debug library file names.
@@ -41,12 +42,31 @@
 # Previously, we used to set CMAKE_DEBUG_POSTFIX globally. That variable should
 # not be cached, however, because doing so would affect all projects processed
 # after libpng, in unexpected and undesirable ways.
-set(PNG_DEBUG_POSTFIX "d"
+set(PNG_DEBUG_POSTFIX
+    "d"
     CACHE STRING "Postfix to append to library file names under the Debug configuration")
 
 # Allow the users to import their own extra configuration settings.
-set(DFA_XTRA ""
-    CACHE FILEPATH "File containing extra configuration settings")
+# Those settings can be either passed via DFA_XTRA if they are in DFA form
+# (such as "pngusr.dfa"), or via PNG_LIBCONF_HEADER if they are in prebuilt
+# header file form (such as "scripts/pnglibconf.h.prebuilt"), but not both.
+# For platforms such as Android or iOS, or in certain cross-platform build
+# scenarios, having a valid PNG_LIBCONF_HEADER is mandatory.
+set(DFA_XTRA
+    ""
+    CACHE FILEPATH "DFA file containing customized build configuration settings for libpng")
+set(PNG_LIBCONF_HEADER
+    ""
+    CACHE FILEPATH "C header file containing customized build configuration settings for libpng")
+set(PNG_LIBCONF_HEADER_PREBUILT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt")
+if(ANDROID OR IOS)
+  set(PNG_LIBCONF_HEADER "${PNG_LIBCONF_HEADER_PREBUILT}")
+endif()
+if((NOT DFA_XTRA STREQUAL "") AND (NOT PNG_LIBCONF_HEADER STREQUAL ""))
+  message(SEND_ERROR "The options DFA_XTRA=\"${DFA_XTRA}\" "
+                     "and PNG_LIBCONF_HEADER=\"${PNG_LIBCONF_HEADER}\" "
+                     "are mutually exclusive")
+endif()
 
 # Allow the users to switch on/off various library build types.
 option(PNG_SHARED "Build libpng as a shared library" ON)
@@ -53,7 +73,12 @@
 option(PNG_STATIC "Build libpng as a static library" ON)
 if(APPLE)
   option(PNG_FRAMEWORK "Build libpng as a framework bundle" ON)
+else()
+  option(PNG_FRAMEWORK "Build libpng as a framework bundle (not available on this platform)" OFF)
 endif()
+if(NOT APPLE AND PNG_FRAMEWORK)
+  message(SEND_ERROR "The option PNG_FRAMEWORK should not be set on this platform")
+endif()
 
 # Allow the users to switch on/off the auxiliary build and test artifacts.
 # These artifacts are NOT part of libpng proper, and are subject to change
@@ -74,8 +99,8 @@
 if(NOT PNG_EXECUTABLES)
   message(DEPRECATION "The option PNG_EXECUTABLES has been deprecated in favour of PNG_TOOLS")
   if(PNG_TOOLS)
-    message(AUTHOR_WARNING
-            "Setting PNG_TOOLS to ${PNG_EXECUTABLES}, to stay compatible with PNG_EXECUTABLES")
+    message(AUTHOR_WARNING "Setting PNG_TOOLS to ${PNG_EXECUTABLES}, "
+                           "to stay compatible with PNG_EXECUTABLES")
     set(PNG_TOOLS "${PNG_EXECUTABLES}")
   endif()
 endif()
@@ -104,16 +129,15 @@
 option(PNG_BUILD_ZLIB "[Deprecated; please use ZLIB_ROOT]" OFF)
 if(PNG_BUILD_ZLIB)
   if("x${ZLIB_ROOT}" STREQUAL "x")
-    message(SEND_ERROR
-            "The option PNG_BUILD_ZLIB=${PNG_BUILD_ZLIB} is no longer supported; "
-            "please use ZLIB_ROOT instead")
+    message(SEND_ERROR "The option PNG_BUILD_ZLIB=${PNG_BUILD_ZLIB} is no longer supported; "
+                       "please use ZLIB_ROOT instead")
   else()
-    message(SEND_ERROR
-            "The option PNG_BUILD_ZLIB=${PNG_BUILD_ZLIB} is no longer supported; "
-            "using ZLIB_ROOT=\"${ZLIB_ROOT}\"")
+    message(SEND_ERROR "The option PNG_BUILD_ZLIB=${PNG_BUILD_ZLIB} is no longer supported; "
+                       "using ZLIB_ROOT=\"${ZLIB_ROOT}\"")
   endif()
 endif()
 
+# Find the prerequisite libraries.
 find_package(ZLIB REQUIRED)
 
 if(UNIX
@@ -135,15 +159,17 @@
   if(PNG_TARGET_ARCHITECTURE MATCHES "^(arm|aarch)")
     if(PNG_TARGET_ARCHITECTURE MATCHES "^(arm64|aarch64)")
       set(PNG_ARM_NEON_POSSIBLE_VALUES on off)
-      set(PNG_ARM_NEON "on"
+      set(PNG_ARM_NEON
+          "on"
           CACHE STRING "Enable ARM NEON optimizations: on|off; on is default")
     else()
       set(PNG_ARM_NEON_POSSIBLE_VALUES check on off)
-      set(PNG_ARM_NEON "off"
+      set(PNG_ARM_NEON
+          "off"
           CACHE STRING "Enable ARM NEON optimizations: check|on|off; off is default")
     endif()
     set_property(CACHE PNG_ARM_NEON
-                PROPERTY STRINGS ${PNG_ARM_NEON_POSSIBLE_VALUES})
+                 PROPERTY STRINGS ${PNG_ARM_NEON_POSSIBLE_VALUES})
     list(FIND PNG_ARM_NEON_POSSIBLE_VALUES ${PNG_ARM_NEON} index)
     if(index EQUAL -1)
       message(FATAL_ERROR "PNG_ARM_NEON must be one of [${PNG_ARM_NEON_POSSIBLE_VALUES}]")
@@ -165,10 +191,11 @@
   # Set definitions and sources for PowerPC.
   if(PNG_TARGET_ARCHITECTURE MATCHES "^(powerpc|ppc64)")
     set(PNG_POWERPC_VSX_POSSIBLE_VALUES on off)
-    set(PNG_POWERPC_VSX "on"
+    set(PNG_POWERPC_VSX
+        "on"
         CACHE STRING "Enable POWERPC VSX optimizations: on|off; on is default")
     set_property(CACHE PNG_POWERPC_VSX
-                PROPERTY STRINGS ${PNG_POWERPC_VSX_POSSIBLE_VALUES})
+                 PROPERTY STRINGS ${PNG_POWERPC_VSX_POSSIBLE_VALUES})
     list(FIND PNG_POWERPC_VSX_POSSIBLE_VALUES ${PNG_POWERPC_VSX} index)
     if(index EQUAL -1)
       message(FATAL_ERROR "PNG_POWERPC_VSX must be one of [${PNG_POWERPC_VSX_POSSIBLE_VALUES}]")
@@ -187,10 +214,11 @@
   # Set definitions and sources for Intel.
   if(PNG_TARGET_ARCHITECTURE MATCHES "^(i[3-6]86|x86|amd64)")
     set(PNG_INTEL_SSE_POSSIBLE_VALUES on off)
-    set(PNG_INTEL_SSE "on"
+    set(PNG_INTEL_SSE
+        "on"
         CACHE STRING "Enable INTEL_SSE optimizations: on|off; on is default")
     set_property(CACHE PNG_INTEL_SSE
-                PROPERTY STRINGS ${PNG_INTEL_SSE_POSSIBLE_VALUES})
+                 PROPERTY STRINGS ${PNG_INTEL_SSE_POSSIBLE_VALUES})
     list(FIND PNG_INTEL_SSE_POSSIBLE_VALUES ${PNG_INTEL_SSE} index)
     if(index EQUAL -1)
       message(FATAL_ERROR "PNG_INTEL_SSE must be one of [${PNG_INTEL_SSE_POSSIBLE_VALUES}]")
@@ -209,10 +237,11 @@
   # Set definitions and sources for MIPS.
   if(PNG_TARGET_ARCHITECTURE MATCHES "^(mipsel|mips64el)")
     set(PNG_MIPS_MSA_POSSIBLE_VALUES on off)
-    set(PNG_MIPS_MSA "on"
+    set(PNG_MIPS_MSA
+        "on"
         CACHE STRING "Enable MIPS_MSA optimizations: on|off; on is default")
     set_property(CACHE PNG_MIPS_MSA
-                PROPERTY STRINGS ${PNG_MIPS_MSA_POSSIBLE_VALUES})
+                 PROPERTY STRINGS ${PNG_MIPS_MSA_POSSIBLE_VALUES})
     list(FIND PNG_MIPS_MSA_POSSIBLE_VALUES ${PNG_MIPS_MSA} index_msa)
     if(index_msa EQUAL -1)
       message(FATAL_ERROR "PNG_MIPS_MSA must be one of [${PNG_MIPS_MSA_POSSIBLE_VALUES}]")
@@ -219,10 +248,11 @@
     endif()
 
     set(PNG_MIPS_MMI_POSSIBLE_VALUES on off)
-    set(PNG_MIPS_MMI "on"
+    set(PNG_MIPS_MMI
+        "on"
         CACHE STRING "Enable MIPS_MMI optimizations: on|off; on is default")
     set_property(CACHE PNG_MIPS_MMI
-                PROPERTY STRINGS ${PNG_MIPS_MMI_POSSIBLE_VALUES})
+                 PROPERTY STRINGS ${PNG_MIPS_MMI_POSSIBLE_VALUES})
     list(FIND PNG_MIPS_MMI_POSSIBLE_VALUES ${PNG_MIPS_MMI} index_mmi)
     if(index_mmi EQUAL -1)
       message(FATAL_ERROR "PNG_MIPS_MMI must be one of [${PNG_MIPS_MMI_POSSIBLE_VALUES}]")
@@ -257,25 +287,25 @@
   if(PNG_TARGET_ARCHITECTURE MATCHES "^(loongarch)")
     include(CheckCCompilerFlag)
     set(PNG_LOONGARCH_LSX_POSSIBLE_VALUES on off)
-    set(PNG_LOONGARCH_LSX "on"
+    set(PNG_LOONGARCH_LSX
+        "on"
         CACHE STRING "Enable LOONGARCH_LSX optimizations: on|off; on is default")
     set_property(CACHE PNG_LOONGARCH_LSX
-                PROPERTY STRINGS ${PNG_LOONGARCH_LSX_POSSIBLE_VALUES})
+                 PROPERTY STRINGS ${PNG_LOONGARCH_LSX_POSSIBLE_VALUES})
     list(FIND PNG_LOONGARCH_LSX_POSSIBLE_VALUES ${PNG_LOONGARCH_LSX} index)
     if(index EQUAL -1)
       message(FATAL_ERROR "PNG_LOONGARCH_LSX must be one of [${PNG_LOONGARCH_LSX_POSSIBLE_VALUES}]")
     elseif(NOT PNG_LOONGARCH_LSX STREQUAL "off")
-      CHECK_C_COMPILER_FLAG("-mlsx" COMPILER_SUPPORTS_LSX)
+      check_c_compiler_flag("-mlsx" COMPILER_SUPPORTS_LSX)
       if(COMPILER_SUPPORTS_LSX)
         set(libpng_loongarch_sources
             loongarch/loongarch_lsx_init.c
             loongarch/filter_lsx_intrinsics.c)
         set_source_files_properties(${libpng_loongarch_sources}
-                                    PROPERTIES
-                                    COMPILE_FLAGS "-mlsx")
+                                    PROPERTIES COMPILE_FLAGS "-mlsx")
         add_definitions(-DPNG_LOONGARCH_LSX_OPT=1)
       else()
-        message(FATAL_ERROR "Compiler does not support -mlsx option")
+        message(FATAL_ERROR "This compiler does not support the -mlsx option")
       endif()
     else()
       add_definitions(-DPNG_LOONGARCH_LSX_OPT=0)
@@ -324,7 +354,8 @@
     # Solaris, because of an incompatibility with the Solaris link editor.
     list(APPEND CMAKE_REQUIRED_FLAGS ${CMAKE_SHARED_LIBRARY_C_FLAGS})
   endif()
-  list(APPEND CMAKE_REQUIRED_FLAGS "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/conftest.map'")
+  list(APPEND CMAKE_REQUIRED_FLAGS
+              "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/conftest.map'")
   check_c_source_compiles("
 void sym1(void) {}
 void sym2(void) {}
@@ -348,26 +379,48 @@
   file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
 endif()
 
-# Find an AWK language processor.
-# Start with specific AWK implementations like gawk and nawk, which are
-# known to work with our scripts, then fall back to the system awk.
-find_program(AWK NAMES gawk nawk awk)
-if(AWK)
-  message(STATUS "Found AWK program: ${AWK}")
-else()
-  message(STATUS "Could not find an AWK-compatible program")
+if(PNG_LIBCONF_HEADER STREQUAL "")
+  # No custom configuration header file has been specified, so we build it
+  # from our DFA files and (optionally) out of the user-supplied DFA file.
+  # Find an AWK language processor.
+  # Start with specific AWK implementations like gawk and nawk, which are
+  # known to work with our scripts, then fall back to the system awk.
+  find_program(AWK NAMES gawk nawk awk)
+  if(AWK)
+    message(STATUS "Found AWK program: ${AWK}")
+  else()
+    message(STATUS "Could not find an AWK-compatible program")
+  endif()
 endif()
 
-if(NOT AWK OR (ANDROID OR IOS))
-  # No awk available to generate sources; use pre-built pnglibconf.h
-  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt
-                 ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h)
+# Include the internal module PNGCheckLibconf.cmake
+include(${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGCheckLibconf.cmake)
+
+if(NOT PNG_LIBCONF_HEADER STREQUAL "")
+  # Configure libpng with the user-defined pnglibconf.h file.
+  png_check_libconf(HEADER "${PNG_LIBCONF_HEADER}")
+  configure_file("${PNG_LIBCONF_HEADER}"
+                 ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h
+                 @ONLY)
   add_custom_target(png_genfiles)
+elseif(NOT AWK)
+  # No AWK program available to generate pnglibconf.h.
+  # Configure libpng with pnglibconf.h.prebuilt.
+  png_check_libconf(HEADER "${PNG_LIBCONF_HEADER_PREBUILT}")
+  configure_file("${PNG_LIBCONF_HEADER_PREBUILT}"
+                 ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h
+                 @ONLY)
+  add_custom_target(png_genfiles)
 else()
+  png_check_libconf(DFA_XTRA "${DFA_XTRA}")
+
   # Include the internal module PNGGenConfig.cmake
   include(${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGGenConfig.cmake)
 
-  # Copy the awk scripts, converting their line endings to Unix (LF)
+  # Work around a limitation of various Windows AWK programs that are
+  # unable to process CRLF-terminated AWK scripts.
+  # Copy these AWK scripts to a temporary location, converting their
+  # line endings from Windows (CRLF) to Unix (LF) at the destination.
   configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/checksym.awk
                  ${CMAKE_CURRENT_BINARY_DIR}/scripts/checksym.awk
                  @ONLY
@@ -413,7 +466,8 @@
 
   # Generate pnglibconf.h
   generate_source(OUTPUT "pnglibconf.h"
-                  DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" pnglibconf_out
+                  DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out"
+                          pnglibconf_out
                           ${PNGLIBCONF_H_EXTRA_DEPENDS})
   add_custom_target(pnglibconf_h
                     DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
@@ -420,7 +474,8 @@
 
   generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/intprefix.c"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out"
-               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" pnglibconf_h)
+               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
+                       pnglibconf_h)
   add_custom_target(png_scripts_intprefix_out
                     DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out")
 
@@ -428,7 +483,8 @@
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out"
                DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h"
                        "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h"
-                       "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" pnglibconf_out)
+                       "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out"
+                       pnglibconf_out)
   add_custom_target(png_scripts_prefix_out
                     DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out")
 
@@ -440,7 +496,8 @@
 
   generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/sym.c"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
-               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" pnglibconf_h)
+               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
+                       pnglibconf_h)
   add_custom_target(png_scripts_sym_out
                     DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out")
 
@@ -456,7 +513,8 @@
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
                DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h"
                        "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h"
-                       "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" pnglibconf_h)
+                       "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
+                       pnglibconf_h)
   add_custom_target(png_scripts_vers_out
                     DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out")
 
@@ -489,20 +547,33 @@
 
   # A single target handles generation of all generated files.
   add_custom_target(png_genfiles
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym" png_gensym
-                            "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers" png_genvers
-                            "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c" pnglibconf_c
-                            "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" pnglibconf_h
-                            "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" pnglibconf_out
-                            "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h" pngprefix_h
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out" png_scripts_intprefix_out
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c" png_scripts_pnglibconf_c
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out" png_scripts_prefix_out
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out" png_scripts_sym_out
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk" png_scripts_symbols_chk
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out" png_scripts_symbols_out
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out" png_scripts_vers_out)
-endif(NOT AWK OR (ANDROID OR IOS))
+                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym"
+                            png_gensym
+                            "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers"
+                            png_genvers
+                            "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c"
+                            pnglibconf_c
+                            "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
+                            pnglibconf_h
+                            "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out"
+                            pnglibconf_out
+                            "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h"
+                            pngprefix_h
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out"
+                            png_scripts_intprefix_out
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c"
+                            png_scripts_pnglibconf_c
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out"
+                            png_scripts_prefix_out
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
+                            png_scripts_sym_out
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk"
+                            png_scripts_symbols_chk
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out"
+                            png_scripts_symbols_out
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
+                            png_scripts_vers_out)
+endif()
 
 # List the source code files.
 set(libpng_public_hdrs
@@ -516,7 +587,7 @@
     pnginfo.h
     pngstruct.h
 )
-if(AWK AND NOT (ANDROID OR IOS))
+if(AWK)
   list(APPEND libpng_private_hdrs "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h")
 endif()
 set(libpng_sources
@@ -601,34 +672,38 @@
   add_library(png_shared SHARED ${libpng_sources})
   add_dependencies(png_shared png_genfiles)
   list(APPEND PNG_LIBRARY_TARGETS png_shared)
-  set_target_properties(png_shared PROPERTIES
-                        OUTPUT_NAME "${PNG_SHARED_OUTPUT_NAME}"
-                        DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}"
-                        VERSION "${PNGLIB_SHARED_VERSION}"
-                        SOVERSION "${PNGLIB_ABI_VERSION}")
+  set_target_properties(png_shared
+                        PROPERTIES OUTPUT_NAME "${PNG_SHARED_OUTPUT_NAME}"
+                                   DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}"
+                                   VERSION "${PNGLIB_SHARED_VERSION}"
+                                   SOVERSION "${PNGLIB_ABI_VERSION}")
   if(UNIX AND AWK)
     if(HAVE_LD_VERSION_SCRIPT)
-      set_target_properties(png_shared PROPERTIES
-                            LINK_FLAGS "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'")
+      set_target_properties(png_shared
+                            PROPERTIES LINK_FLAGS "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'")
     elseif(HAVE_SOLARIS_LD_VERSION_SCRIPT)
-      set_target_properties(png_shared PROPERTIES
-                            LINK_FLAGS "-Wl,-M -Wl,'${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'")
+      set_target_properties(png_shared
+                            PROPERTIES LINK_FLAGS "-Wl,-M -Wl,'${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'")
     endif()
   endif()
   if(APPLE)
     # Avoid CMake's implicit compile definition "png_shared_EXPORTS".
-    set_target_properties(png_shared PROPERTIES DEFINE_SYMBOL "")
+    set_target_properties(png_shared
+                          PROPERTIES DEFINE_SYMBOL "")
   elseif(WIN32)
     # Use the explicit compile definition "PNG_BUILD_DLL" for Windows DLLs.
-    set_target_properties(png_shared PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
+    set_target_properties(png_shared
+                          PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
   endif()
   target_include_directories(png_shared
                              PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>)
   target_include_directories(png_shared
                              PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
-  target_include_directories(png_shared SYSTEM
+  target_include_directories(png_shared
+                             SYSTEM
                              INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}>)
-  target_link_libraries(png_shared PUBLIC ZLIB::ZLIB ${M_LIBRARY})
+  target_link_libraries(png_shared
+                        PUBLIC ZLIB::ZLIB ${M_LIBRARY})
 endif()
 
 if(PNG_STATIC)
@@ -635,21 +710,22 @@
   add_library(png_static STATIC ${libpng_sources})
   add_dependencies(png_static png_genfiles)
   list(APPEND PNG_LIBRARY_TARGETS png_static)
-  set_target_properties(png_static PROPERTIES
-                        OUTPUT_NAME "${PNG_STATIC_OUTPUT_NAME}"
-                        DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}")
+  set_target_properties(png_static
+                        PROPERTIES OUTPUT_NAME "${PNG_STATIC_OUTPUT_NAME}"
+                                   DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}")
   target_include_directories(png_static
                              PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>)
   target_include_directories(png_static
                              PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
-  target_include_directories(png_static SYSTEM
+  target_include_directories(png_static
+                             SYSTEM
                              INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}>)
-  target_link_libraries(png_static PUBLIC ZLIB::ZLIB ${M_LIBRARY})
+  target_link_libraries(png_static
+                        PUBLIC ZLIB::ZLIB ${M_LIBRARY})
 endif()
 
 if(PNG_FRAMEWORK AND NOT APPLE)
-  message(AUTHOR_WARNING
-          "Setting PNG_FRAMEWORK to OFF, as it only applies to Apple systems")
+  message(AUTHOR_WARNING "Setting PNG_FRAMEWORK to OFF, as it only applies to Apple systems")
   set(PNG_FRAMEWORK OFF)
 endif()
 
@@ -657,25 +733,28 @@
   add_library(png_framework SHARED ${libpng_sources})
   add_dependencies(png_framework png_genfiles)
   list(APPEND PNG_LIBRARY_TARGETS png_framework)
-  set_target_properties(png_framework PROPERTIES
-                        FRAMEWORK TRUE
-                        FRAMEWORK_VERSION "${PNGLIB_VERSION}"
-                        MACOSX_FRAMEWORK_SHORT_VERSION_STRING "${PNGLIB_MAJOR}.${PNGLIB_MINOR}"
-                        MACOSX_FRAMEWORK_BUNDLE_VERSION "${PNGLIB_VERSION}"
-                        MACOSX_FRAMEWORK_IDENTIFIER "org.libpng.libpng"
-                        XCODE_ATTRIBUTE_INSTALL_PATH "@rpath"
-                        PUBLIC_HEADER "${libpng_public_hdrs}"
-                        OUTPUT_NAME "png"
-                        DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}")
+  set_target_properties(png_framework
+                        PROPERTIES FRAMEWORK TRUE
+                                   FRAMEWORK_VERSION "${PNGLIB_VERSION}"
+                                   MACOSX_FRAMEWORK_SHORT_VERSION_STRING "${PNGLIB_MAJOR}.${PNGLIB_MINOR}"
+                                   MACOSX_FRAMEWORK_BUNDLE_VERSION "${PNGLIB_VERSION}"
+                                   MACOSX_FRAMEWORK_IDENTIFIER "org.libpng.libpng"
+                                   XCODE_ATTRIBUTE_INSTALL_PATH "@rpath"
+                                   PUBLIC_HEADER "${libpng_public_hdrs}"
+                                   OUTPUT_NAME "png"
+                                   DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}")
   # Avoid CMake's implicit compile definition "-Dpng_framework_EXPORTS".
-  set_target_properties(png_framework PROPERTIES DEFINE_SYMBOL "")
+  set_target_properties(png_framework
+                        PROPERTIES DEFINE_SYMBOL "")
   target_include_directories(png_framework
                              PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>)
   target_include_directories(png_framework
                              PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
-  target_include_directories(png_framework SYSTEM
+  target_include_directories(png_framework
+                             SYSTEM
                              INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}>)
-  target_link_libraries(png_framework PUBLIC ZLIB::ZLIB ${M_LIBRARY})
+  target_link_libraries(png_framework
+                        PUBLIC ZLIB::ZLIB ${M_LIBRARY})
 endif()
 
 if(NOT PNG_LIBRARY_TARGETS)
@@ -702,7 +781,8 @@
   set(PNGTEST_PNG "${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png")
 
   add_executable(pngtest ${pngtest_sources})
-  target_link_libraries(pngtest PRIVATE png_shared)
+  target_link_libraries(pngtest
+                        PRIVATE png_shared)
 
   png_add_test(NAME pngtest
                COMMAND pngtest
@@ -713,7 +793,8 @@
                FILES "${TEST_PNG3_PNGS}")
 
   add_executable(pngvalid ${pngvalid_sources})
-  target_link_libraries(pngvalid PRIVATE png_shared)
+  target_link_libraries(pngvalid
+                        PRIVATE png_shared)
 
   png_add_test(NAME pngvalid-gamma-16-to-8
                COMMAND pngvalid
@@ -759,7 +840,8 @@
                OPTIONS --transform)
 
   add_executable(pngstest ${pngstest_sources})
-  target_link_libraries(pngstest PRIVATE png_shared)
+  target_link_libraries(pngstest
+                        PRIVATE png_shared)
 
   foreach(gamma_type 1.8 linear none sRGB)
     foreach(alpha_type none alpha)
@@ -814,7 +896,8 @@
   endforeach()
 
   add_executable(pngunknown ${pngunknown_sources})
-  target_link_libraries(pngunknown PRIVATE png_shared)
+  target_link_libraries(pngunknown
+                        PRIVATE png_shared)
 
   png_add_test(NAME pngunknown-discard
                COMMAND pngunknown
@@ -830,7 +913,8 @@
                FILES "${PNGTEST_PNG}")
   png_add_test(NAME pngunknown-sAPI
                COMMAND pngunknown
-               OPTIONS --strict bKGD=save cHRM=save gAMA=save all=discard iCCP=save sBIT=save sRGB=save
+               OPTIONS --strict
+                       bKGD=save cHRM=save gAMA=save all=discard iCCP=save sBIT=save sRGB=save
                FILES "${PNGTEST_PNG}")
   png_add_test(NAME pngunknown-save
                COMMAND pngunknown
@@ -846,7 +930,8 @@
                FILES "${PNGTEST_PNG}")
 
   add_executable(pngimage ${pngimage_sources})
-  target_link_libraries(pngimage PRIVATE png_shared)
+  target_link_libraries(pngimage
+                        PRIVATE png_shared)
 
   png_add_test(NAME pngimage-quick
                COMMAND pngimage
@@ -860,11 +945,13 @@
 
 if(PNG_SHARED AND PNG_TOOLS)
   add_executable(pngfix ${pngfix_sources})
-  target_link_libraries(pngfix PRIVATE png_shared)
+  target_link_libraries(pngfix
+                        PRIVATE png_shared)
   set(PNG_BIN_TARGETS pngfix)
 
   add_executable(png-fix-itxt ${png_fix_itxt_sources})
-  target_link_libraries(png-fix-itxt PRIVATE ZLIB::ZLIB ${M_LIBRARY})
+  target_link_libraries(png-fix-itxt
+                        PRIVATE ZLIB::ZLIB ${M_LIBRARY})
   list(APPEND PNG_BIN_TARGETS png-fix-itxt)
 endif()
 
@@ -878,12 +965,11 @@
   # CMake version 3.13.
   cmake_parse_arguments(_SYM "" "FILE;TARGET" "" ${ARGN})
   if(NOT _SYM_FILE AND NOT _SYM_TARGET)
-    message(FATAL_ERROR "create_symlink: Missing FILE or TARGET argument")
+    message(FATAL_ERROR "create_symlink: Missing arguments: FILE or TARGET")
   endif()
   if(_SYM_FILE AND _SYM_TARGET)
-    message(FATAL_ERROR "create_symlink: "
-                        "The arguments FILE (${_SYM_FILE}) and TARGET (${_SYM_TARGET}) "
-                        "are mutually-exclusive")
+    message(FATAL_ERROR "create_symlink: Mutually-exlusive arguments:"
+                        "FILE (${_SYM_FILE}) and TARGET (${_SYM_TARGET})")
   endif()
 
   if(_SYM_FILE)
@@ -945,11 +1031,11 @@
 # Only do this on Windows for Cygwin - the files don't make much sense
 # outside of a UNIX look-alike.
 if(NOT WIN32 OR CYGWIN OR MINGW)
-  set(prefix      ${CMAKE_INSTALL_PREFIX})
+  set(prefix ${CMAKE_INSTALL_PREFIX})
   set(exec_prefix ${CMAKE_INSTALL_PREFIX})
-  set(libdir      ${CMAKE_INSTALL_FULL_LIBDIR})
-  set(includedir  ${CMAKE_INSTALL_FULL_INCLUDEDIR})
-  set(LIBS        "-lz -lm")
+  set(libdir ${CMAKE_INSTALL_FULL_LIBDIR})
+  set(includedir ${CMAKE_INSTALL_FULL_INCLUDEDIR})
+  set(LIBS "-lz -lm")
   configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in
                  ${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}.pc
                  @ONLY)

Modified: branches/stable/source/src/libs/libpng/libpng-src/README
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/README	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/README	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,4 @@
-README for libpng version 1.6.46
+README for libpng version 1.6.48
 ================================
 
 See the note about version numbers near the top of `png.h`.

Modified: branches/stable/source/src/libs/libpng/libpng-src/arm/arm_init.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/arm/arm_init.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/arm/arm_init.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -35,14 +35,14 @@
 #ifndef PNG_ARM_NEON_FILE
 #  if defined(__aarch64__) || defined(_M_ARM64)
      /* ARM Neon is expected to be unconditionally available on ARM64. */
-#    error "PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on ARM64"
+#    error PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on ARM64
 #  elif defined(__ARM_NEON__) || defined(__ARM_NEON)
      /* ARM Neon is expected to be available on the target CPU architecture. */
-#    error "PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on this CPU arch"
+#    error PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on this CPU arch
 #  elif defined(__linux__)
 #    define PNG_ARM_NEON_FILE "contrib/arm-neon/linux.c"
 #  else
-#    error "No support for run-time ARM Neon checking; use compile-time options"
+#    error No support for run-time ARM Neon checking; use compile-time options
 #  endif
 #endif
 
@@ -53,7 +53,7 @@
 #endif /* PNG_ARM_NEON_CHECK_SUPPORTED */
 
 #ifndef PNG_ALIGNED_MEMORY_SUPPORTED
-#  error "ALIGNED_MEMORY is required; set: -DPNG_ALIGNED_MEMORY_SUPPORTED"
+#  error ALIGNED_MEMORY is required; please define PNG_ALIGNED_MEMORY_SUPPORTED
 #endif
 
 void

Modified: branches/stable/source/src/libs/libpng/libpng-src/ci/README.md
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ci/README.md	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/ci/README.md	2025-05-17 22:44:20 UTC (rev 964)
@@ -4,7 +4,7 @@
 Copyright Notice
 ----------------
 
-Copyright (c) 2019-2024 Cosmin Truta.
+Copyright (c) 2019-2025 Cosmin Truta.
 
 Use, modification and distribution are subject to the MIT License.
 Please see the accompanying file `LICENSE_MIT.txt` or visit

Modified: branches/stable/source/src/libs/libpng/libpng-src/ci/ci_lint.sh
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ci/ci_lint.sh	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/ci/ci_lint.sh	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -o errexit -o pipefail -o posix
 
-# Copyright (c) 2019-2024 Cosmin Truta.
+# Copyright (c) 2019-2025 Cosmin Truta.
 #
 # Use, modification and distribution are subject to the MIT License.
 # Please see the accompanying file LICENSE_MIT.txt
@@ -61,7 +61,7 @@
     }
     ci_info "## LINTING: CI scripts ##"
     ci_spawn "$CI_SHELLCHECK" --version
-    find ./ci -maxdepth 1 -name "*.sh" | {
+    find ./ci -name "ci_*.sh" -not -name "ci_env.*.sh" | {
         local my_file
         while IFS="" read -r my_file
         do

Deleted: branches/stable/source/src/libs/libpng/libpng-src/ci/ci_shellify.sh
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ci/ci_shellify.sh	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/ci/ci_shellify.sh	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,92 +0,0 @@
-#!/usr/bin/env bash
-set -o errexit -o pipefail -o posix
-
-# Copyright (c) 2019-2024 Cosmin Truta.
-#
-# Use, modification and distribution are subject to the MIT License.
-# Please see the accompanying file LICENSE_MIT.txt
-#
-# SPDX-License-Identifier: MIT
-
-# shellcheck source=ci/lib/ci.lib.sh
-source "$(dirname "$0")/lib/ci.lib.sh"
-cd "$CI_TOPLEVEL_DIR"
-
-function ci_shellify_c {
-    # Convert C preprocessor text, specifically originating
-    # from png.h, to shell scripting text.
-    # Select only the easy-to-parse definitions of PNG_LIBPNG_*.
-    sed -n -e '/^\# *define * PNG_LIBPNG_[^ ]* * ["0-9A-Za-z_]/ p' |
-        sed -e 's/^\# *define * PNG\([^ ]*\) * \([^ ]*\)/PNG\1=\2/' \
-            -e 's/=PNG\([0-9A-Za-z_]*\)/=\${PNG\1}/' \
-            -e 's/^\([^ ]*=[^ ]*\).*$/export \1;/'
-}
-
-function ci_shellify_autoconf {
-    # Convert autoconf (M4) text, specifically originating
-    # from configure.ac, to shell scripting text.
-    # Select only the easy-to-parse definitions of PNGLIB_*.
-    sed -n -e '/^ *PNGLIB_[^ ]*=[$"0-9A-Za-z_]/ p' |
-        sed -e 's/^ *PNG\([0-9A-Za-z_]*\)=\([^# ]*\).*$/PNG\1=\2/' \
-            -e 's/^\([^ ]*=[^ ]*\).*$/export \1;/'
-}
-
-function ci_shellify_cmake {
-    # Convert CMake lists text, specifically originating
-    # from CMakeLists.txt, to shell scripting text.
-    # Select only the easy-to-parse definitions of PNGLIB_*.
-    sed -n -e '/^ *set *(PNGLIB_[^ ]* * [$"0-9A-Za-z_].*)/ p' |
-        sed -e 's/^ *set *(PNG\([^ ]*\) * \([^() ]*\)).*$/PNG\1=\2/' \
-            -e 's/^\([^ ]*=[^ ]*\).*$/export \1;/'
-}
-
-function ci_shellify {
-    local arg filename
-    for arg in "$@"
-    do
-        test -f "$arg" || ci_err "no such file: '$arg'"
-        filename="$(basename -- "$arg")"
-        case "$filename" in
-        ( *.[ch] )
-            [[ $filename == png.h ]] || {
-                ci_err "unable to shellify: '$filename' (expecting: 'png.h')"
-            }
-            ci_shellify_c <"$arg" ;;
-        ( config* | *.ac )
-            [[ $filename == configure.ac ]] || {
-                ci_err "unable to shellify: '$filename' (expecting: 'configure.ac')"
-            }
-            ci_shellify_autoconf <"$arg" ;;
-        ( *CMake* | *cmake* | *.txt )
-            [[ $filename == [Cc][Mm]ake[Ll]ists.txt ]] || {
-                ci_err "unable to shellify: '$filename' (expecting: 'CMakeLists.txt')"
-            }
-            ci_shellify_cmake <"$arg" ;;
-        ( * )
-            ci_err "unable to shellify: '$arg'" ;;
-        esac
-    done
-}
-
-function usage {
-    echo "usage: $CI_SCRIPT_NAME [<options>] <files>..."
-    echo "options: -?|-h|--help"
-    echo "files: png.h|configure.ac|CMakeLists.txt"
-    exit "${@:-0}"
-}
-
-function main {
-    local opt
-    while getopts ":" opt
-    do
-        # This ain't a while-loop. It only pretends to be.
-        [[ $1 == -[?h]* || $1 == --help || $1 == --help=* ]] && usage 0
-        ci_err "unknown option: '$1'"
-    done
-    shift $((OPTIND - 1))
-    [[ $# -eq 0 ]] && usage 2
-    # And... go!
-    ci_shellify "$@"
-}
-
-main "$@"

Modified: branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_cmake.sh
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_cmake.sh	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_cmake.sh	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -o errexit -o pipefail -o posix
 
-# Copyright (c) 2019-2024 Cosmin Truta.
+# Copyright (c) 2019-2025 Cosmin Truta.
 #
 # Use, modification and distribution are subject to the MIT License.
 # Please see the accompanying file LICENSE_MIT.txt
@@ -64,6 +64,7 @@
     ci_info "environment option: \$CI_RANLIB: '$CI_RANLIB'"
     ci_info "environment option: \$CI_SANITIZERS: '$CI_SANITIZERS'"
     ci_info "environment option: \$CI_FORCE: '$CI_FORCE'"
+    ci_info "environment option: \$CI_NO_BUILD: '$CI_NO_BUILD'"
     ci_info "environment option: \$CI_NO_TEST: '$CI_NO_TEST'"
     ci_info "environment option: \$CI_NO_INSTALL: '$CI_NO_INSTALL'"
     ci_info "environment option: \$CI_NO_CLEAN: '$CI_NO_CLEAN'"
@@ -148,10 +149,12 @@
                          -S . \
                          -DCMAKE_INSTALL_PREFIX="$CI_INSTALL_DIR" \
                          "${all_cmake_vars[@]}"
-    # Spawn "cmake --build ...".
-    ci_spawn "$CI_CMAKE" --build "$CI_BUILD_DIR" \
-                         --config "$CI_CMAKE_BUILD_TYPE" \
-                         "${all_cmake_build_flags[@]}"
+    ci_expr $((CI_NO_BUILD)) || {
+        # Spawn "cmake --build ...".
+        ci_spawn "$CI_CMAKE" --build "$CI_BUILD_DIR" \
+                             --config "$CI_CMAKE_BUILD_TYPE" \
+                             "${all_cmake_build_flags[@]}"
+    }
     ci_expr $((CI_NO_TEST)) || {
         # Spawn "ctest" if testing is not disabled.
         ci_spawn pushd "$CI_BUILD_DIR"

Modified: branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_configure.sh
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_configure.sh	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_configure.sh	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -o errexit -o pipefail -o posix
 
-# Copyright (c) 2019-2024 Cosmin Truta.
+# Copyright (c) 2019-2025 Cosmin Truta.
 #
 # Use, modification and distribution are subject to the MIT License.
 # Please see the accompanying file LICENSE_MIT.txt
@@ -58,6 +58,7 @@
     ci_info "environment option: \$CI_LD_FLAGS: '$CI_LD_FLAGS'"
     ci_info "environment option: \$CI_SANITIZERS: '$CI_SANITIZERS'"
     ci_info "environment option: \$CI_FORCE: '$CI_FORCE'"
+    ci_info "environment option: \$CI_NO_BUILD: '$CI_NO_BUILD'"
     ci_info "environment option: \$CI_NO_TEST: '$CI_NO_TEST'"
     ci_info "environment option: \$CI_NO_INSTALL: '$CI_NO_INSTALL'"
     ci_info "environment option: \$CI_NO_CLEAN: '$CI_NO_CLEAN'"
@@ -131,8 +132,10 @@
     ci_spawn cd "$CI_BUILD_DIR"
     # Spawn "configure".
     ci_spawn "$CI_SRC_DIR/configure" --prefix="$CI_INSTALL_DIR" $CI_CONFIGURE_FLAGS
-    # Spawn "make".
-    ci_spawn "$CI_MAKE" $CI_MAKE_FLAGS
+    ci_expr $((CI_NO_BUILD)) || {
+        # Spawn "make".
+        ci_spawn "$CI_MAKE" $CI_MAKE_FLAGS
+    }
     ci_expr $((CI_NO_TEST)) || {
         # Spawn "make test" if testing is not disabled.
         ci_spawn "$CI_MAKE" $CI_MAKE_FLAGS test

Modified: branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_makefiles.sh
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_makefiles.sh	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_makefiles.sh	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -o errexit -o pipefail -o posix
 
-# Copyright (c) 2019-2024 Cosmin Truta.
+# Copyright (c) 2019-2025 Cosmin Truta.
 #
 # Use, modification and distribution are subject to the MIT License.
 # Please see the accompanying file LICENSE_MIT.txt
@@ -51,6 +51,7 @@
     ci_info "environment option: \$CI_LIBS: '$CI_LIBS'"
     ci_info "environment option: \$CI_SANITIZERS: '$CI_SANITIZERS'"
     ci_info "environment option: \$CI_FORCE: '$CI_FORCE'"
+    ci_info "environment option: \$CI_NO_BUILD: '$CI_NO_BUILD'"
     ci_info "environment option: \$CI_NO_TEST: '$CI_NO_TEST'"
     ci_info "environment option: \$CI_NO_CLEAN: '$CI_NO_CLEAN'"
     ci_info "executable: \$CI_MAKE: $(command -V "$CI_MAKE")"
@@ -145,10 +146,12 @@
     for my_makefile in $CI_MAKEFILES
     do
         ci_info "using makefile: $my_makefile"
-        # Spawn "make".
-        ci_spawn "$CI_MAKE" -f "$my_makefile" \
-                            "${all_make_flags[@]}" \
-                            "${all_make_vars[@]}"
+        ci_expr $((CI_NO_BUILD)) || {
+            # Spawn "make".
+            ci_spawn "$CI_MAKE" -f "$my_makefile" \
+                                "${all_make_flags[@]}" \
+                                "${all_make_vars[@]}"
+        }
         ci_expr $((CI_NO_TEST)) || {
             # Spawn "make test" if testing is not disabled.
             ci_spawn "$CI_MAKE" -f "$my_makefile" \

Modified: branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_version.sh
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_version.sh	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/ci/ci_verify_version.sh	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -o errexit -o pipefail -o posix
 
-# Copyright (c) 2019-2024 Cosmin Truta.
+# Copyright (c) 2019-2025 Cosmin Truta.
 #
 # Use, modification and distribution are subject to the MIT License.
 # Please see the accompanying file LICENSE_MIT.txt
@@ -12,33 +12,43 @@
 source "$(dirname "$0")/lib/ci.lib.sh"
 cd "$CI_TOPLEVEL_DIR"
 
-function ci_init_shellify {
-    [[ -f $CI_SCRIPT_DIR/ci_shellify.sh ]] || {
-        ci_err_internal "missing script: '$CI_SCRIPT_DIR/ci_shellify.sh'"
-    }
-}
+# Declare the global environments collected from various sources.
+declare CI_ENV_LIBPNG_VER        # collected from png.h
+declare CI_ENV_AUTOCONF_VER      # collected from configure.ac
+declare CI_ENV_CMAKE_VER         # collected from CMakeLists.txt
+declare CI_ENV_LIBPNGCONFIG_VER  # collected from scripts/libpng-config-head.in
 
 function ci_run_shellify {
+    local my_script my_result
+    my_script="$CI_SCRIPT_DIR/libexec/ci_shellify_${1#--}.sh"
+    shift 1
+    [[ -f $my_script ]] || {
+        ci_err_internal "missing script: '$my_script'"
+    }
     ci_info "shellifying:" "$@"
-    local my_result
-    "$BASH" "$CI_SCRIPT_DIR/ci_shellify.sh" "$@"
+    "$BASH" "$my_script" "$@"
     echo "$my_result" | "$BASH" --posix || ci_err "bad shellify output"
     echo "$my_result"
 }
 
-function ci_verify_version {
+function ci_init_version_verification {
     ci_info "## START OF VERIFICATION ##"
-    local my_env_libpng_ver my_env_autoconf_ver my_env_cmake_ver my_expect
-    ci_init_shellify
-    my_env_libpng_ver="$(ci_run_shellify png.h)"
-    echo "$my_env_libpng_ver"
-    my_env_autoconf_ver="$(ci_run_shellify configure.ac)"
-    echo "$my_env_autoconf_ver"
-    my_env_cmake_ver="$(ci_run_shellify CMakeLists.txt)"
-    echo "$my_env_cmake_ver"
-    ci_info "## VERIFYING: png.h version definitions ##"
-    eval "$my_env_libpng_ver"
-    local my_expect="${PNG_LIBPNG_VER_MAJOR}.${PNG_LIBPNG_VER_MINOR}.${PNG_LIBPNG_VER_RELEASE}"
+    CI_ENV_LIBPNG_VER="$(ci_run_shellify --c png.h)"
+    echo "$CI_ENV_LIBPNG_VER"
+    CI_ENV_AUTOCONF_VER="$(ci_run_shellify --autoconf configure.ac)"
+    echo "$CI_ENV_AUTOCONF_VER"
+    CI_ENV_CMAKE_VER="$(ci_run_shellify --cmake CMakeLists.txt)"
+    echo "$CI_ENV_CMAKE_VER"
+    CI_ENV_LIBPNGCONFIG_VER="$(ci_run_shellify --shell scripts/libpng-config-head.in)"
+    echo "$CI_ENV_LIBPNGCONFIG_VER"
+}
+
+# shellcheck disable=SC2154
+function ci_do_version_verification {
+    local my_expect
+    ci_info "## VERIFYING: version definitions in 'png.h' ##"
+    eval "$CI_ENV_LIBPNG_VER"
+    my_expect="${PNG_LIBPNG_VER_MAJOR}.${PNG_LIBPNG_VER_MINOR}.${PNG_LIBPNG_VER_RELEASE}"
     if [[ "$PNG_LIBPNG_VER_STRING" == "$my_expect"* ]]
     then
         ci_info "matched: \$PNG_LIBPNG_VER_STRING == $my_expect*"
@@ -77,7 +87,7 @@
     else
         ci_err "mismatched: \$PNG_LIBPNG_VER_BUILD != [01]"
     fi
-    ci_info "## VERIFYING: png.h build definitions ##"
+    ci_info "## VERIFYING: build definitions in 'png.h' ##"
     my_expect="${PNG_LIBPNG_VER_MAJOR}.${PNG_LIBPNG_VER_MINOR}.${PNG_LIBPNG_VER_RELEASE}"
     if [[ "$PNG_LIBPNG_VER_STRING" == "$my_expect" ]]
     then
@@ -110,11 +120,11 @@
     else
         ci_err "unexpected: \$PNG_LIBPNG_VER_STRING == '$PNG_LIBPNG_VER_STRING'"
     fi
-    ci_info "## VERIFYING: png.h type definitions ##"
+    ci_info "## VERIFYING: type definitions in 'png.h' ##"
     my_expect="$(echo "png_libpng_version_${PNG_LIBPNG_VER_STRING}" | tr . _)"
     ci_spawn grep -w -e "$my_expect" png.h
-    ci_info "## VERIFYING: configure.ac version definitions ##"
-    eval "$my_env_autoconf_ver"
+    ci_info "## VERIFYING: version definitions in 'configure.ac' ##"
+    eval "$CI_ENV_AUTOCONF_VER"
     if [[ "$PNGLIB_VERSION" == "$PNG_LIBPNG_VER_STRING" ]]
     then
         ci_info "matched: \$PNGLIB_VERSION == \$PNG_LIBPNG_VER_STRING"
@@ -121,8 +131,8 @@
     else
         ci_err "mismatched: \$PNGLIB_VERSION != \$PNG_LIBPNG_VER_STRING"
     fi
-    ci_info "## VERIFYING: CMakeLists.txt version definitions ##"
-    eval "$my_env_cmake_ver"
+    ci_info "## VERIFYING: version definitions in 'CMakeLists.txt' ##"
+    eval "$CI_ENV_CMAKE_VER"
     if [[ "$PNGLIB_VERSION" == "$PNG_LIBPNG_VER_STRING" && "$PNGLIB_SUBREVISION" == 0 ]]
     then
         ci_info "matched: \$PNGLIB_VERSION == \$PNG_LIBPNG_VER_STRING"
@@ -133,10 +143,28 @@
     else
         ci_err "mismatched: \$PNGLIB_VERSION != \$PNG_LIBPNG_VER_STRING"
     fi
+    ci_info "## VERIFYING: version definitions in 'scripts/libpng-config-head.in' ##"
+    eval "$CI_ENV_LIBPNGCONFIG_VER"
+    if [[ "$version" == "$PNG_LIBPNG_VER_STRING" ]]
+    then
+        ci_info "matched: \$version == \$PNG_LIBPNG_VER_STRING"
+    else
+        ci_err "mismatched: \$version != \$PNG_LIBPNG_VER_STRING"
+    fi
+}
+
+function ci_finish_version_verification {
     ci_info "## END OF VERIFICATION ##"
-    ci_info "success!"
+    # Relying on "set -o errexit" to not reach here in case of error.
+    ci_info "## SUCCESS ##"
 }
 
+function ci_verify_version {
+    ci_init_version_verification
+    ci_do_version_verification
+    ci_finish_version_verification
+}
+
 function usage {
     echo "usage: $CI_SCRIPT_NAME [<options>]"
     echo "options: -?|-h|--help"

Modified: branches/stable/source/src/libs/libpng/libpng-src/ci/lib/ci.lib.sh
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ci/lib/ci.lib.sh	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/ci/lib/ci.lib.sh	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,4 @@
-# Copyright (c) 2019-2024 Cosmin Truta.
+# Copyright (c) 2019-2025 Cosmin Truta.
 #
 # Use, modification and distribution are subject to the MIT License.
 # Please see the accompanying file LICENSE_MIT.txt
@@ -91,6 +91,9 @@
 [[ ${CI_FORCE:-0} == [01] ]] || {
     ci_err "bad boolean option: \$CI_FORCE: '$CI_FORCE'"
 }
+[[ ${CI_NO_BUILD:-0} == [01] ]] || {
+    ci_err "bad boolean option: \$CI_NO_BUILD: '$CI_NO_BUILD'"
+}
 [[ ${CI_NO_TEST:-0} == [01] ]] || {
     ci_err "bad boolean option: \$CI_NO_TEST: '$CI_NO_TEST'"
 }
@@ -100,3 +103,9 @@
 [[ ${CI_NO_CLEAN:-0} == [01] ]] || {
     ci_err "bad boolean option: \$CI_NO_CLEAN: '$CI_NO_CLEAN'"
 }
+if ci_expr $((CI_NO_BUILD))
+then
+    ci_expr $((CI_NO_TEST && CI_NO_INSTALL)) || {
+        ci_err "\$CI_NO_BUILD requires \$CI_NO_TEST and \$CI_NO_INSTALL"
+    }
+fi

Added: branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_autoconf.sh
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_autoconf.sh	                        (rev 0)
+++ branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_autoconf.sh	2025-05-17 22:44:20 UTC (rev 964)
@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+set -o errexit -o pipefail -o posix
+
+# Copyright (c) 2019-2025 Cosmin Truta.
+#
+# Use, modification and distribution are subject to the MIT License.
+# Please see the accompanying file LICENSE_MIT.txt
+#
+# SPDX-License-Identifier: MIT
+
+# shellcheck source=ci/lib/ci.lib.sh
+source "$(dirname "$0")/../lib/ci.lib.sh"
+
+function ci_shellify_autoconf {
+    # Convert autoconf (M4) text, specifically originating
+    # from configure.ac, to shell scripting text.
+    # Select only the easy-to-parse definitions of PNGLIB_*.
+    sed -n -e '/^ *PNGLIB_[^ ]*=[$"0-9A-Za-z_]/ p' |
+        sed -e 's/^ *PNG\([0-9A-Za-z_]*\)=\([^# ]*\).*$/PNG\1=\2/' \
+            -e 's/^\([^ ]*=[^ ]*\).*$/export \1;/'
+}
+
+function usage {
+    echo "usage: $CI_SCRIPT_NAME [<options>] configure.ac"
+    echo "options: -?|-h|--help"
+    exit "${@:-0}"
+}
+
+function main {
+    local opt
+    while getopts ":" opt
+    do
+        # This ain't a while-loop. It only pretends to be.
+        [[ $1 == -[?h]* || $1 == --help || $1 == --help=* ]] && usage 0
+        ci_err "unknown option: '$1'"
+    done
+    shift $((OPTIND - 1))
+    [[ $# -eq 0 ]] && usage 2
+    [[ $# -eq 1 ]] || ci_err "too many operands"
+    # And... go!
+    test -e "$1" || ci_err "no such file: '$1'"
+    [[ $(basename -- "$1") == configure.ac ]] || {
+        ci_err "incorrect operand: '$1' (expecting: 'configure.ac')"
+    }
+    ci_shellify_autoconf <"$1"
+}
+
+main "$@"


Property changes on: branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_autoconf.sh
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+LF
\ No newline at end of property
Added: branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_c.sh
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_c.sh	                        (rev 0)
+++ branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_c.sh	2025-05-17 22:44:20 UTC (rev 964)
@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+set -o errexit -o pipefail -o posix
+
+# Copyright (c) 2019-2025 Cosmin Truta.
+#
+# Use, modification and distribution are subject to the MIT License.
+# Please see the accompanying file LICENSE_MIT.txt
+#
+# SPDX-License-Identifier: MIT
+
+# shellcheck source=ci/lib/ci.lib.sh
+source "$(dirname "$0")/../lib/ci.lib.sh"
+
+function ci_shellify_c {
+    # Convert C preprocessor text, specifically originating
+    # from png.h, to shell scripting text.
+    # Select only the easy-to-parse definitions of PNG_LIBPNG_*.
+    sed -n -e '/^\# *define * PNG_LIBPNG_[^ ]* * ["0-9A-Za-z_]/ p' |
+        sed -e 's/^\# *define * PNG\([^ ]*\) * \([^ ]*\)/PNG\1=\2/' \
+            -e 's/=PNG\([0-9A-Za-z_]*\)/=\${PNG\1}/' \
+            -e 's/^\([^ ]*=[^ ]*\).*$/export \1;/'
+}
+
+function usage {
+    echo "usage: $CI_SCRIPT_NAME [<options>] png.h"
+    echo "options: -?|-h|--help"
+    exit "${@:-0}"
+}
+
+function main {
+    local opt
+    while getopts ":" opt
+    do
+        # This ain't a while-loop. It only pretends to be.
+        [[ $1 == -[?h]* || $1 == --help || $1 == --help=* ]] && usage 0
+        ci_err "unknown option: '$1'"
+    done
+    shift $((OPTIND - 1))
+    [[ $# -eq 0 ]] && usage 2
+    [[ $# -eq 1 ]] || ci_err "too many operands"
+    # And... go!
+    test -e "$1" || ci_err "no such file: '$1'"
+    [[ $(basename -- "$1") == png.h ]] || {
+        ci_err "incorrect operand: '$1' (expecting: 'png.h')"
+    }
+    ci_shellify_c <"$1"
+}
+
+main "$@"


Property changes on: branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_c.sh
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+LF
\ No newline at end of property
Added: branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_cmake.sh
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_cmake.sh	                        (rev 0)
+++ branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_cmake.sh	2025-05-17 22:44:20 UTC (rev 964)
@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+set -o errexit -o pipefail -o posix
+
+# Copyright (c) 2019-2025 Cosmin Truta.
+#
+# Use, modification and distribution are subject to the MIT License.
+# Please see the accompanying file LICENSE_MIT.txt
+#
+# SPDX-License-Identifier: MIT
+
+# shellcheck source=ci/lib/ci.lib.sh
+source "$(dirname "$0")/../lib/ci.lib.sh"
+
+function ci_shellify_cmake {
+    # Convert CMake lists text, specifically originating
+    # from CMakeLists.txt, to shell scripting text.
+    # Select only the easy-to-parse definitions of PNGLIB_*.
+    sed -n -e '/^ *set *(PNGLIB_[^ ]* * [$"0-9A-Za-z_].*)/ p' |
+        sed -e 's/^ *set *(PNG\([^ ]*\) * \([^() ]*\)).*$/PNG\1=\2/' \
+            -e 's/^\([^ ]*=[^ ]*\).*$/export \1;/'
+}
+
+function usage {
+    echo "usage: $CI_SCRIPT_NAME [<options>] CMakeLists.txt"
+    echo "options: -?|-h|--help"
+    exit "${@:-0}"
+}
+
+function main {
+    local opt
+    while getopts ":" opt
+    do
+        # This ain't a while-loop. It only pretends to be.
+        [[ $1 == -[?h]* || $1 == --help || $1 == --help=* ]] && usage 0
+        ci_err "unknown option: '$1'"
+    done
+    shift $((OPTIND - 1))
+    [[ $# -eq 0 ]] && usage 2
+    [[ $# -eq 1 ]] || ci_err "too many operands"
+    # And... go!
+    test -e "$1" || ci_err "no such file: '$1'"
+    filename="$(basename -- "$1")"
+    [[ $filename == [Cc][Mm]ake[Ll]ists.txt ]] || {
+        ci_err "incorrect operand: '$1' (expecting: 'CMakeLists.txt')"
+    }
+    ci_shellify_cmake <"$1"
+}
+
+main "$@"


Property changes on: branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_cmake.sh
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+LF
\ No newline at end of property
Added: branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_shell.sh
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_shell.sh	                        (rev 0)
+++ branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_shell.sh	2025-05-17 22:44:20 UTC (rev 964)
@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+set -o errexit -o pipefail -o posix
+
+# Copyright (c) 2019-2025 Cosmin Truta.
+#
+# Use, modification and distribution are subject to the MIT License.
+# Please see the accompanying file LICENSE_MIT.txt
+#
+# SPDX-License-Identifier: MIT
+
+# shellcheck source=ci/lib/ci.lib.sh
+source "$(dirname "$0")/../lib/ci.lib.sh"
+
+function ci_shellify_shell {
+    # Convert shell scripting text to shell scripting text.
+    # Select only the easy-to-parse version definitions.
+    sed -n -e '/^ *[A-Za-z_][0-9A-Za-z_]*=[0-9][^ #]* *$/ p' |
+        sed -e 's/^ *\([^ ]*=[^ ]*\) *$/export \1;/'
+}
+
+function usage {
+    echo "usage: $CI_SCRIPT_NAME [<options>] libpng-config-head.in"
+    echo "options: -?|-h|--help"
+    exit "${@:-0}"
+}
+
+function main {
+    local opt
+    while getopts ":" opt
+    do
+        # This ain't a while-loop. It only pretends to be.
+        [[ $1 == -[?h]* || $1 == --help || $1 == --help=* ]] && usage 0
+        ci_err "unknown option: '$1'"
+    done
+    shift $((OPTIND - 1))
+    [[ $# -eq 0 ]] && usage 2
+    [[ $# -eq 1 ]] || ci_err "too many operands"
+    # And... go!
+    test -e "$1" || ci_err "no such file: '$1'"
+    [[ $(basename -- "$1") == libpng-config-head.in ]] || {
+        ci_err "incorrect operand: '$1' (expecting: 'libpng-config-head.in')"
+    }
+    ci_shellify_shell <"$1"
+}
+
+main "$@"


Property changes on: branches/stable/source/src/libs/libpng/libpng-src/ci/libexec/ci_shellify_shell.sh
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+LF
\ No newline at end of property
Modified: branches/stable/source/src/libs/libpng/libpng-src/configure.ac
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/configure.ac	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/configure.ac	2025-05-17 22:44:20 UTC (rev 964)
@@ -25,7 +25,7 @@
 
 dnl Version number stuff here:
 
-AC_INIT([libpng],[1.6.46],[png-mng-implement at lists.sourceforge.net])
+AC_INIT([libpng],[1.6.48],[png-mng-implement at lists.sourceforge.net])
 AC_CONFIG_MACRO_DIR([scripts/autoconf])
 
 # libpng does not follow GNU file name conventions (hence 'foreign')
@@ -46,10 +46,10 @@
 dnl AM_PREREQ([1.11.2])
 dnl stop configure from automagically running automake
 
-PNGLIB_VERSION=1.6.46
+PNGLIB_VERSION=1.6.48
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=6
-PNGLIB_RELEASE=46
+PNGLIB_RELEASE=48
 
 dnl End of version number stuff
 

Added: branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/fixed.dfa
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/fixed.dfa	                        (rev 0)
+++ branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/fixed.dfa	2025-05-17 22:44:20 UTC (rev 964)
@@ -0,0 +1,15 @@
+# fixed.dfa
+#  Build time configuration of libpng
+#
+# Author: John Bowler
+# Copyright: (c) John Bowler, 2025
+# Usage rights:
+#  To the extent possible under law, the author has waived all copyright and
+#  related or neighboring rights to this work.  This work is published from:
+#  United States.
+#
+# Test the standard libpng configuration without floating point (the internal
+# fixed point implementations are used instead).
+#
+option FLOATING_ARITHMETIC off
+option FLOATING_POINT off

Added: branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/float-fixed.dfa
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/float-fixed.dfa	                        (rev 0)
+++ branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/float-fixed.dfa	2025-05-17 22:44:20 UTC (rev 964)
@@ -0,0 +1,14 @@
+# fixed-float.dfa
+#  Build time configuration of libpng
+#
+# Author: John Bowler
+# Copyright: (c) John Bowler, 2025
+# Usage rights:
+#  To the extent possible under law, the author has waived all copyright and
+#  related or neighboring rights to this work.  This work is published from:
+#  United States.
+#
+# Test the standard libpng configuration with the fixed point internal
+# implementation in place of the default floating point
+#
+option FLOATING_ARITHMETIC off

Added: branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/nocompile-limits.dfa
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/nocompile-limits.dfa	                        (rev 0)
+++ branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/nocompile-limits.dfa	2025-05-17 22:44:20 UTC (rev 964)
@@ -0,0 +1,21 @@
+# nolimits.dfa
+#  Build time configuration of libpng
+#
+# Author: John Bowler
+# Copyright: (c) John Bowler, 2025
+#
+# Usage rights:
+#  To the extent possible under law, the author has waived all copyright and
+#  related or neighboring rights to this work.  This work is published from:
+#  United States.
+#
+# Build libpng without any limits and without run-time settable limits.  Turning
+# USER_LIMITS off reduces libpng code size by allowing compile-time elimination
+# of some checking code.
+#
+option USER_LIMITS off
+
+@# define PNG_USER_WIDTH_MAX PNG_UINT_31_MAX
+@# define PNG_USER_HEIGHT_MAX PNG_UINT_31_MAX
+@# define PNG_USER_CHUNK_CACHE_MAX 0
+@# define PNG_USER_CHUNK_MALLOC_MAX 0

Added: branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/nolimits.dfa
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/nolimits.dfa	                        (rev 0)
+++ branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/nolimits.dfa	2025-05-17 22:44:20 UTC (rev 964)
@@ -0,0 +1,19 @@
+# nolimits.dfa
+#  Build time configuration of libpng
+#
+# Author: John Bowler
+# Copyright: (c) John Bowler, 2025
+#
+# Usage rights:
+#  To the extent possible under law, the author has waived all copyright and
+#  related or neighboring rights to this work.  This work is published from:
+#  United States.
+#
+# Build libpng without any limits.  With these settigs run-time limits are still
+# possible.
+#
+@# define PNG_USER_WIDTH_MAX PNG_UINT_31_MAX
+@# define PNG_USER_HEIGHT_MAX PNG_UINT_31_MAX
+@# define PNG_USER_CHUNK_CACHE_MAX 0
+@# define PNG_USER_CHUNK_MALLOC_MAX 0
+

Added: branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/read-full.dfa
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/read-full.dfa	                        (rev 0)
+++ branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/read-full.dfa	2025-05-17 22:44:20 UTC (rev 964)
@@ -0,0 +1,13 @@
+# read-full.dfa
+#  Build time configuration of libpng
+#
+# Author: John Bowler
+# Copyright: (c) John Bowler, 2025
+# Usage rights:
+#  To the extent possible under law, the author has waived all copyright and
+#  related or neighboring rights to this work.  This work is published from:
+#  United States.
+#
+# Build libpng with no write support and full read support.
+#
+option WRITE off

Added: branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/write-full.dfa
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/write-full.dfa	                        (rev 0)
+++ branches/stable/source/src/libs/libpng/libpng-src/contrib/conftest/write-full.dfa	2025-05-17 22:44:20 UTC (rev 964)
@@ -0,0 +1,13 @@
+# write-full.dfa
+#  Build time configuration of libpng
+#
+# Author: John Bowler
+# Copyright: (c) John Bowler, 2025
+# Usage rights:
+#  To the extent possible under law, the author has waived all copyright and
+#  related or neighboring rights to this work.  This work is published from:
+#  United States.
+#
+# Build libpng with no read support and full write support.
+#
+option READ off

Modified: branches/stable/source/src/libs/libpng/libpng-src/contrib/examples/pngpixel.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/contrib/examples/pngpixel.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/contrib/examples/pngpixel.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -184,11 +184,11 @@
                      compression_method, filter_method;
                   png_bytep row_tmp;
 
-                  /* Now associate the recently opened (FILE*) with the default
-                   * libpng initialization functions.  Sometimes libpng is
-                   * compiled without stdio support (it can be difficult to do
-                   * in some environments); in that case you will have to write
-                   * your own read callback to read data from the (FILE*).
+                  /* Now associate the recently opened FILE object with the
+                   * default libpng initialization functions.  Sometimes libpng
+                   * is compiled without stdio support (it can be difficult to
+                   * do in some environments); in that case you will have to
+                   * write your own read callback to read data from the stream.
                    */
                   png_init_io(png_ptr, f);
 

Modified: branches/stable/source/src/libs/libpng/libpng-src/contrib/libtests/pngimage.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/contrib/libtests/pngimage.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/contrib/libtests/pngimage.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -542,6 +542,7 @@
 struct display
 {
    jmp_buf        error_return;      /* Where to go to on error */
+   error_level    error_code;        /* Set before longjmp */
 
    const char    *filename;          /* The name of the original file */
    const char    *operation;         /* Operation being performed */
@@ -762,7 +763,10 @@
 
    /* Errors cause this routine to exit to the fail code */
    if (level > APP_FAIL || (level > ERRORS && !(dp->options & CONTINUE)))
+   {
+      dp->error_code = level;
       longjmp(dp->error_return, level);
+    }
 }
 
 /* error handler callbacks for libpng */
@@ -1570,18 +1574,19 @@
 do_test(struct display *dp, const char *file)
    /* Exists solely to isolate the setjmp clobbers */
 {
-   int ret = setjmp(dp->error_return);
+   dp->error_code = VERBOSE; /* The "lowest" level */
 
-   if (ret == 0)
+   if (setjmp(dp->error_return) == 0)
    {
       test_one_file(dp, file);
       return 0;
    }
 
-   else if (ret < ERRORS) /* shouldn't longjmp on warnings */
-      display_log(dp, INTERNAL_ERROR, "unexpected return code %d", ret);
+   else if (dp->error_code < ERRORS) /* shouldn't longjmp on warnings */
+      display_log(dp, INTERNAL_ERROR, "unexpected return code %d",
+                  dp->error_code);
 
-   return ret;
+   return dp->error_code;
 }
 
 int
@@ -1681,7 +1686,11 @@
             int ret = do_test(&d, argv[i]);
 
             if (ret > QUIET) /* abort on user or internal error */
+            {
+               display_clean(&d);
+               display_destroy(&d);
                return 99;
+            }
          }
 
          /* Here on any return, including failures, except user/internal issues

Modified: branches/stable/source/src/libs/libpng/libpng-src/contrib/libtests/pngstest.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/contrib/libtests/pngstest.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/contrib/libtests/pngstest.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -595,7 +595,8 @@
    memset(image, 0, sizeof *image);
 }
 
-/* Reset the image to be read again - only needs to rewind the FILE* at present.
+/* Reset the image to be read again - only needs to rewind the FILE object at
+ * present.
  */
 static void
 resetimage(Image *image)

Modified: branches/stable/source/src/libs/libpng/libpng-src/contrib/tools/pngfix.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/contrib/tools/pngfix.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/contrib/tools/pngfix.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -32,7 +32,7 @@
 #endif
 
 #if PNG_LIBPNG_VER < 10603 /* 1.6.3 */
-#  error "pngfix will not work with libpng prior to 1.6.3"
+#  error pngfix requires libpng version 1.6.3 or newer
 #endif
 
 #ifdef PNG_SETJMP_SUPPORTED
@@ -68,7 +68,7 @@
 #endif
 
 #ifndef PNG_MAXIMUM_INFLATE_WINDOW
-#  error "pngfix not supported in this libpng version"
+#  error pngfix requires libpng with PNG_MAXIMUM_INFLATE_WINDOW supported
 #endif
 
 #if ZLIB_VERNUM >= 0x1240

Modified: branches/stable/source/src/libs/libpng/libpng-src/example.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/example.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/example.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -2,7 +2,7 @@
 
 /* example.c - an example of using libpng
  *
- * Maintained 2018-2024 Cosmin Truta
+ * Maintained 2018-2025 Cosmin Truta
  * Maintained 1998-2016 Glenn Randers-Pehrson
  * Maintained 1996-1997 Andreas Dilger
  * Written 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -179,11 +179,11 @@
  *    components.
  *
  * You do not have to read directly from a file.  You can read from memory or,
- * on systems that support it, from a <stdio.h> FILE*.  This is controlled by
- * the particular png_image_read_from_ function you call at the start.
- * Likewise, on write, you can write to a FILE* if your system supports it.
- * Check the macro PNG_STDIO_SUPPORTED to see if stdio support has been
- * included in your libpng build.
+ * on systems that support <stdio.h>, from a FILE object.  This is controlled
+ * by the particular png_image_begin_read_from_ function you call at the start.
+ * Likewise, on write, you can write to a FILE object if your system supports
+ * <stdio.h>.  The macro PNG_STDIO_SUPPORTED indicates if stdio is available
+ * and accessible from your libpng build.
  *
  * If you read 16-bit (PNG_FORMAT_FLAG_LINEAR) data, you may need to write it
  * in the 8-bit format for display.  You do this by setting the convert_to_8bit

Modified: branches/stable/source/src/libs/libpng/libpng-src/libpng-manual.txt
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/libpng-manual.txt	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/libpng-manual.txt	2025-05-17 22:44:20 UTC (rev 964)
@@ -9,7 +9,7 @@
 
  Based on:
 
- libpng version 1.6.36, December 2018, through 1.6.46 - January 2025
+ libpng version 1.6.36, December 2018, through 1.6.48 - April 2025
  Updated and distributed by Cosmin Truta
  Copyright (c) 2018-2025 Cosmin Truta
 
@@ -4089,7 +4089,7 @@
      is filled in from the PNG header in the file.
 
    int png_image_begin_read_from_stdio (png_imagep image,
-     FILE* file)
+     FILE *file)
 
       The PNG header is read from the stdio FILE object.
 
@@ -4164,7 +4164,7 @@
       int convert_to_8_bit, const void *buffer,
       png_int_32 row_stride, const void *colormap)
 
-      Write the image to the given (FILE*).
+      Write the image to the given FILE object.
 
 With all write APIs if image is in one of the linear formats with
 (png_uint_16) data then setting convert_to_8_bit will cause the output to be

Modified: branches/stable/source/src/libs/libpng/libpng-src/libpng.3
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/libpng.3	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/libpng.3	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "January 23, 2025"
+.TH LIBPNG 3 "April 30, 2025"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.46
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.48
 
 .SH SYNOPSIS
 \fB#include <png.h>\fP
@@ -223,7 +223,7 @@
 
 \fBint png_image_begin_read_from_file (png_imagep \fP\fIimage\fP\fB, const char \fI*file_name\fP\fB);\fP
 
-\fBint png_image_begin_read_from_stdio (png_imagep \fP\fIimage\fP\fB, FILE* \fIfile\fP\fB);\fP
+\fBint png_image_begin_read_from_stdio (png_imagep \fP\fIimage\fP\fB, FILE *\fIfile\fP\fB);\fP
 
 \fBint, png_image_begin_read_from_memory (png_imagep \fP\fIimage\fP\fB, png_const_voidp \fP\fImemory\fP\fB, size_t \fIsize\fP\fB);\fP
 
@@ -528,7 +528,7 @@
 
  Based on:
 
- libpng version 1.6.36, December 2018, through 1.6.46 - January 2025
+ libpng version 1.6.36, December 2018, through 1.6.48 - April 2025
  Updated and distributed by Cosmin Truta
  Copyright (c) 2018-2025 Cosmin Truta
 
@@ -4608,7 +4608,7 @@
      is filled in from the PNG header in the file.
 
    int png_image_begin_read_from_stdio (png_imagep image,
-     FILE* file)
+     FILE *file)
 
       The PNG header is read from the stdio FILE object.
 
@@ -4683,7 +4683,7 @@
       int convert_to_8_bit, const void *buffer,
       png_int_32 row_stride, const void *colormap)
 
-      Write the image to the given (FILE*).
+      Write the image to the given FILE object.
 
 With all write APIs if image is in one of the linear formats with
 (png_uint_16) data then setting convert_to_8_bit will cause the output to be

Modified: branches/stable/source/src/libs/libpng/libpng-src/libpngpf.3
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/libpngpf.3	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/libpngpf.3	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,24 +1,17 @@
-.TH LIBPNGPF 3 "January 23, 2025"
+.TH LIBPNGPF 3 "April 30, 2025"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.46
-(private functions)
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.48
 
 .SH SYNOPSIS
-\fB#include \fI"pngpriv.h"
+\fB#include "pngpriv.h"\fP
 
-\fBAs of libpng version \fP\fI1.5.1\fP\fB, this section is no longer
-\fP\fImaintained\fP\fB, now that the private function prototypes are hidden in
-\fP\fIpngpriv.h\fP\fB and not accessible to applications. Look in
-\fP\fIpngpriv.h\fP\fB for the prototypes and a short description of each
-function.
-
 .SH DESCRIPTION
-The functions previously listed here are used privately by libpng and are not
-available for use by applications.  They are not "exported" to applications
-using shared libraries.
+As of libpng version 1.5.1, this manual is no longer maintained.  The private
+function prototypes, declared in private header files, should not be accessed
+by applications.
 
 .SH "SEE ALSO"
-.BR "png"(5), " libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
+.BR "libpng"(3)
 
 .SH AUTHORS
 Cosmin Truta, Glenn Randers-Pehrson

Modified: branches/stable/source/src/libs/libpng/libpng-src/mips/mips_init.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/mips/mips_init.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/mips/mips_init.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -48,7 +48,7 @@
 #include PNG_MIPS_MSA_FILE
 
 #else  /* PNG_MIPS_MSA_FILE */
-#  error "PNG_MIPS_MSA_FILE undefined: no support for run-time MIPS MSA checks"
+#  error PNG_MIPS_MSA_FILE undefined: no support for run-time MIPS MSA checks
 #endif /* PNG_MIPS_MSA_FILE */
 #endif /* PNG_MIPS_MSA_CHECK_SUPPORTED */
 
@@ -66,12 +66,12 @@
 #include PNG_MIPS_MMI_FILE
 
 #else  /* PNG_MIPS_MMI_FILE */
-#  error "PNG_MIPS_MMI_FILE undefined: no support for run-time MIPS MMI checks"
+#  error PNG_MIPS_MMI_FILE undefined: no support for run-time MIPS MMI checks
 #endif /* PNG_MIPS_MMI_FILE */
 #endif /* PNG_MIPS_MMI_CHECK_SUPPORTED*/
 
 #ifndef PNG_ALIGNED_MEMORY_SUPPORTED
-#  error "ALIGNED_MEMORY is required; set: -DPNG_ALIGNED_MEMORY_SUPPORTED"
+#  error ALIGNED_MEMORY is required; please define PNG_ALIGNED_MEMORY_SUPPORTED
 #endif
 
 /* MIPS supports two optimizations: MMI and MSA. The appropriate

Modified: branches/stable/source/src/libs/libpng/libpng-src/png.5
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/png.5	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/png.5	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,4 @@
-.TH PNG 5 "January 23, 2025"
+.TH PNG 5 "April 30, 2025"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 
@@ -20,10 +20,10 @@
 .SH "SEE ALSO"
 .BR "libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
 .LP
-PNG Specification (Third Edition) Candidate Recommendation Draft, July 2024:
+PNG Specification (Third Edition) Candidate Recommendation, March 2025:
 .IP
 .br
-https://www.w3.org/TR/2024/CRD-png-3-20240718/
+https://www.w3.org/TR/2025/CR-png-3-20250313/
 .LP
 PNG Specification (Second Edition), November 2003:
 .IP

Modified: branches/stable/source/src/libs/libpng/libpng-src/png.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/png.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/png.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -13,8 +13,35 @@
 #include "pngpriv.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_46 Your_png_h_is_not_version_1_6_46;
+typedef png_libpng_version_1_6_48 Your_png_h_is_not_version_1_6_48;
 
+/* Sanity check the chunks definitions - PNG_KNOWN_CHUNKS from pngpriv.h and the
+ * corresponding macro definitions.  This causes a compile time failure if
+ * something is wrong but generates no code.
+ *
+ * (1) The first check is that the PNG_CHUNK(cHNK, index) 'index' values must
+ * increment from 0 to the last value.
+ */
+#define PNG_CHUNK(cHNK, index) != (index) || ((index)+1)
+
+#if 0 PNG_KNOWN_CHUNKS < 0
+#  error PNG_KNOWN_CHUNKS chunk definitions are not in order
+#endif
+
+#undef PNG_CHUNK
+
+/* (2) The chunk name macros, png_cHNK, must all be valid and defined.  Since
+ * this is a preprocessor test undefined pp-tokens come out as zero and will
+ * fail this test.
+ */
+#define PNG_CHUNK(cHNK, index) !PNG_CHUNK_NAME_VALID(png_ ## cHNK) ||
+
+#if PNG_KNOWN_CHUNKS 0
+#  error png_cHNK not defined for some known cHNK
+#endif
+
+#undef PNG_CHUNK
+
 /* Tells libpng that we have already handled the first "num_bytes" bytes
  * of the PNG file signature.  If the PNG data is embedded into another
  * stream we can set num_bytes = 8 so that libpng will not attempt to read
@@ -241,21 +268,23 @@
     */
    memset(&create_struct, 0, (sizeof create_struct));
 
-   /* Added at libpng-1.2.6 */
 #  ifdef PNG_USER_LIMITS_SUPPORTED
       create_struct.user_width_max = PNG_USER_WIDTH_MAX;
       create_struct.user_height_max = PNG_USER_HEIGHT_MAX;
 
 #     ifdef PNG_USER_CHUNK_CACHE_MAX
-      /* Added at libpng-1.2.43 and 1.4.0 */
       create_struct.user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX;
 #     endif
 
-#     ifdef PNG_USER_CHUNK_MALLOC_MAX
-      /* Added at libpng-1.2.43 and 1.4.1, required only for read but exists
-       * in png_struct regardless.
-       */
+#     if PNG_USER_CHUNK_MALLOC_MAX > 0 /* default to compile-time limit */
       create_struct.user_chunk_malloc_max = PNG_USER_CHUNK_MALLOC_MAX;
+
+      /* No compile-time limit, so initialize to the system limit: */
+#     elif defined PNG_MAX_MALLOC_64K /* legacy system limit */
+      create_struct.user_chunk_malloc_max = 65536U;
+
+#     else /* modern system limit SIZE_MAX (C99) */
+      create_struct.user_chunk_malloc_max = PNG_SIZE_MAX;
 #     endif
 #  endif
 
@@ -597,13 +626,6 @@
    /* Free any eXIf entry */
    if (((mask & PNG_FREE_EXIF) & info_ptr->free_me) != 0)
    {
-# ifdef PNG_READ_eXIf_SUPPORTED
-      if (info_ptr->eXIf_buf)
-      {
-         png_free(png_ptr, info_ptr->eXIf_buf);
-         info_ptr->eXIf_buf = NULL;
-      }
-# endif
       if (info_ptr->exif)
       {
          png_free(png_ptr, info_ptr->exif);
@@ -678,7 +700,7 @@
  * function of your own because "FILE *" isn't necessarily available.
  */
 void PNGAPI
-png_init_io(png_structrp png_ptr, png_FILE_p fp)
+png_init_io(png_structrp png_ptr, FILE *fp)
 {
    png_debug(1, "in png_init_io");
 
@@ -793,7 +815,7 @@
    return PNG_STRING_COPYRIGHT
 #else
    return PNG_STRING_NEWLINE \
-      "libpng version 1.6.46" PNG_STRING_NEWLINE \
+      "libpng version 1.6.48" PNG_STRING_NEWLINE \
       "Copyright (c) 2018-2025 Cosmin Truta" PNG_STRING_NEWLINE \
       "Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
       PNG_STRING_NEWLINE \
@@ -1038,169 +1060,6 @@
    }
 }
 
-/* png_convert_size: a PNGAPI but no longer in png.h, so deleted
- * at libpng 1.5.5!
- */
-
-/* Added at libpng version 1.2.34 and 1.4.0 (moved from pngset.c) */
-#ifdef PNG_GAMMA_SUPPORTED /* always set if COLORSPACE */
-static int
-png_colorspace_check_gamma(png_const_structrp png_ptr,
-    png_colorspacerp colorspace, png_fixed_point gAMA, int from)
-   /* This is called to check a new gamma value against an existing one.  The
-    * routine returns false if the new gamma value should not be written.
-    *
-    * 'from' says where the new gamma value comes from:
-    *
-    *    0: the new gamma value is the libpng estimate for an ICC profile
-    *    1: the new gamma value comes from a gAMA chunk
-    *    2: the new gamma value comes from an sRGB chunk
-    */
-{
-   png_fixed_point gtest;
-
-   if ((colorspace->flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
-       (png_muldiv(&gtest, colorspace->gamma, PNG_FP_1, gAMA) == 0  ||
-      png_gamma_significant(gtest) != 0))
-   {
-      /* Either this is an sRGB image, in which case the calculated gamma
-       * approximation should match, or this is an image with a profile and the
-       * value libpng calculates for the gamma of the profile does not match the
-       * value recorded in the file.  The former, sRGB, case is an error, the
-       * latter is just a warning.
-       */
-      if ((colorspace->flags & PNG_COLORSPACE_FROM_sRGB) != 0 || from == 2)
-      {
-         png_chunk_report(png_ptr, "gamma value does not match sRGB",
-             PNG_CHUNK_ERROR);
-         /* Do not overwrite an sRGB value */
-         return from == 2;
-      }
-
-      else /* sRGB tag not involved */
-      {
-         png_chunk_report(png_ptr, "gamma value does not match libpng estimate",
-             PNG_CHUNK_WARNING);
-         return from == 1;
-      }
-   }
-
-   return 1;
-}
-
-void /* PRIVATE */
-png_colorspace_set_gamma(png_const_structrp png_ptr,
-    png_colorspacerp colorspace, png_fixed_point gAMA)
-{
-   /* Changed in libpng-1.5.4 to limit the values to ensure overflow can't
-    * occur.  Since the fixed point representation is asymmetrical it is
-    * possible for 1/gamma to overflow the limit of 21474 and this means the
-    * gamma value must be at least 5/100000 and hence at most 20000.0.  For
-    * safety the limits here are a little narrower.  The values are 0.00016 to
-    * 6250.0, which are truly ridiculous gamma values (and will produce
-    * displays that are all black or all white.)
-    *
-    * In 1.6.0 this test replaces the ones in pngrutil.c, in the gAMA chunk
-    * handling code, which only required the value to be >0.
-    */
-   png_const_charp errmsg;
-
-   if (gAMA < 16 || gAMA > 625000000)
-      errmsg = "gamma value out of range";
-
-#  ifdef PNG_READ_gAMA_SUPPORTED
-   /* Allow the application to set the gamma value more than once */
-   else if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 &&
-      (colorspace->flags & PNG_COLORSPACE_FROM_gAMA) != 0)
-      errmsg = "duplicate";
-#  endif
-
-   /* Do nothing if the colorspace is already invalid */
-   else if ((colorspace->flags & PNG_COLORSPACE_INVALID) != 0)
-      return;
-
-   else
-   {
-      if (png_colorspace_check_gamma(png_ptr, colorspace, gAMA,
-          1/*from gAMA*/) != 0)
-      {
-         /* Store this gamma value. */
-         colorspace->gamma = gAMA;
-         colorspace->flags |=
-            (PNG_COLORSPACE_HAVE_GAMMA | PNG_COLORSPACE_FROM_gAMA);
-      }
-
-      /* At present if the check_gamma test fails the gamma of the colorspace is
-       * not updated however the colorspace is not invalidated.  This
-       * corresponds to the case where the existing gamma comes from an sRGB
-       * chunk or profile.  An error message has already been output.
-       */
-      return;
-   }
-
-   /* Error exit - errmsg has been set. */
-   colorspace->flags |= PNG_COLORSPACE_INVALID;
-   png_chunk_report(png_ptr, errmsg, PNG_CHUNK_WRITE_ERROR);
-}
-
-void /* PRIVATE */
-png_colorspace_sync_info(png_const_structrp png_ptr, png_inforp info_ptr)
-{
-   if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0)
-   {
-      /* Everything is invalid */
-      info_ptr->valid &= ~(PNG_INFO_gAMA|PNG_INFO_cHRM|PNG_INFO_sRGB|
-         PNG_INFO_iCCP);
-
-#     ifdef PNG_COLORSPACE_SUPPORTED
-      /* Clean up the iCCP profile now if it won't be used. */
-      png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, -1/*not used*/);
-#     else
-      PNG_UNUSED(png_ptr)
-#     endif
-   }
-
-   else
-   {
-#     ifdef PNG_COLORSPACE_SUPPORTED
-      /* Leave the INFO_iCCP flag set if the pngset.c code has already set
-       * it; this allows a PNG to contain a profile which matches sRGB and
-       * yet still have that profile retrievable by the application.
-       */
-      if ((info_ptr->colorspace.flags & PNG_COLORSPACE_MATCHES_sRGB) != 0)
-         info_ptr->valid |= PNG_INFO_sRGB;
-
-      else
-         info_ptr->valid &= ~PNG_INFO_sRGB;
-
-      if ((info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
-         info_ptr->valid |= PNG_INFO_cHRM;
-
-      else
-         info_ptr->valid &= ~PNG_INFO_cHRM;
-#     endif
-
-      if ((info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0)
-         info_ptr->valid |= PNG_INFO_gAMA;
-
-      else
-         info_ptr->valid &= ~PNG_INFO_gAMA;
-   }
-}
-
-#ifdef PNG_READ_SUPPORTED
-void /* PRIVATE */
-png_colorspace_sync(png_const_structrp png_ptr, png_inforp info_ptr)
-{
-   if (info_ptr == NULL) /* reduce code size; check here not in the caller */
-      return;
-
-   info_ptr->colorspace = png_ptr->colorspace;
-   png_colorspace_sync_info(png_ptr, info_ptr);
-}
-#endif
-#endif /* GAMMA */
-
 #ifdef PNG_COLORSPACE_SUPPORTED
 static png_int_32
 png_fp_add(png_int_32 addend0, png_int_32 addend1, int *error)
@@ -1269,9 +1128,10 @@
  * non-zero on a parameter error.  The X, Y and Z values are required to be
  * positive and less than 1.0.
  */
-static int
+int /* PRIVATE */
 png_xy_from_XYZ(png_xy *xy, const png_XYZ *XYZ)
 {
+   /* NOTE: returns 0 on success, 1 means error. */
    png_int_32 d, dred, dgreen, dblue, dwhite, whiteX, whiteY;
 
    /* 'd' in each of the blocks below is just X+Y+Z for each component,
@@ -1334,9 +1194,10 @@
    return 0;
 }
 
-static int
+int /* PRIVATE */
 png_XYZ_from_xy(png_XYZ *XYZ, const png_xy *xy)
 {
+   /* NOTE: returns 0 on success, 1 means error. */
    png_fixed_point red_inverse, green_inverse, blue_scale;
    png_fixed_point left, right, denominator;
 
@@ -1628,239 +1489,9 @@
 
    return 0; /*success*/
 }
+#endif /* COLORSPACE */
 
-static int
-png_XYZ_normalize(png_XYZ *XYZ)
-{
-   png_int_32 Y, Ytemp;
-
-   /* Normalize by scaling so the sum of the end-point Y values is PNG_FP_1. */
-   Ytemp = XYZ->red_Y;
-   if (png_safe_add(&Ytemp, XYZ->green_Y, XYZ->blue_Y))
-      return 1;
-
-   Y = Ytemp;
-
-   if (Y != PNG_FP_1)
-   {
-      if (png_muldiv(&XYZ->red_X, XYZ->red_X, PNG_FP_1, Y) == 0)
-         return 1;
-      if (png_muldiv(&XYZ->red_Y, XYZ->red_Y, PNG_FP_1, Y) == 0)
-         return 1;
-      if (png_muldiv(&XYZ->red_Z, XYZ->red_Z, PNG_FP_1, Y) == 0)
-         return 1;
-
-      if (png_muldiv(&XYZ->green_X, XYZ->green_X, PNG_FP_1, Y) == 0)
-         return 1;
-      if (png_muldiv(&XYZ->green_Y, XYZ->green_Y, PNG_FP_1, Y) == 0)
-         return 1;
-      if (png_muldiv(&XYZ->green_Z, XYZ->green_Z, PNG_FP_1, Y) == 0)
-         return 1;
-
-      if (png_muldiv(&XYZ->blue_X, XYZ->blue_X, PNG_FP_1, Y) == 0)
-         return 1;
-      if (png_muldiv(&XYZ->blue_Y, XYZ->blue_Y, PNG_FP_1, Y) == 0)
-         return 1;
-      if (png_muldiv(&XYZ->blue_Z, XYZ->blue_Z, PNG_FP_1, Y) == 0)
-         return 1;
-   }
-
-   return 0;
-}
-
-static int
-png_colorspace_endpoints_match(const png_xy *xy1, const png_xy *xy2, int delta)
-{
-   /* Allow an error of +/-0.01 (absolute value) on each chromaticity */
-   if (PNG_OUT_OF_RANGE(xy1->whitex, xy2->whitex,delta) ||
-       PNG_OUT_OF_RANGE(xy1->whitey, xy2->whitey,delta) ||
-       PNG_OUT_OF_RANGE(xy1->redx,   xy2->redx,  delta) ||
-       PNG_OUT_OF_RANGE(xy1->redy,   xy2->redy,  delta) ||
-       PNG_OUT_OF_RANGE(xy1->greenx, xy2->greenx,delta) ||
-       PNG_OUT_OF_RANGE(xy1->greeny, xy2->greeny,delta) ||
-       PNG_OUT_OF_RANGE(xy1->bluex,  xy2->bluex, delta) ||
-       PNG_OUT_OF_RANGE(xy1->bluey,  xy2->bluey, delta))
-      return 0;
-   return 1;
-}
-
-/* Added in libpng-1.6.0, a different check for the validity of a set of cHRM
- * chunk chromaticities.  Earlier checks used to simply look for the overflow
- * condition (where the determinant of the matrix to solve for XYZ ends up zero
- * because the chromaticity values are not all distinct.)  Despite this it is
- * theoretically possible to produce chromaticities that are apparently valid
- * but that rapidly degrade to invalid, potentially crashing, sets because of
- * arithmetic inaccuracies when calculations are performed on them.  The new
- * check is to round-trip xy -> XYZ -> xy and then check that the result is
- * within a small percentage of the original.
- */
-static int
-png_colorspace_check_xy(png_XYZ *XYZ, const png_xy *xy)
-{
-   int result;
-   png_xy xy_test;
-
-   /* As a side-effect this routine also returns the XYZ endpoints. */
-   result = png_XYZ_from_xy(XYZ, xy);
-   if (result != 0)
-      return result;
-
-   result = png_xy_from_XYZ(&xy_test, XYZ);
-   if (result != 0)
-      return result;
-
-   if (png_colorspace_endpoints_match(xy, &xy_test,
-       5/*actually, the math is pretty accurate*/) != 0)
-      return 0;
-
-   /* Too much slip */
-   return 1;
-}
-
-/* This is the check going the other way.  The XYZ is modified to normalize it
- * (another side-effect) and the xy chromaticities are returned.
- */
-static int
-png_colorspace_check_XYZ(png_xy *xy, png_XYZ *XYZ)
-{
-   int result;
-   png_XYZ XYZtemp;
-
-   result = png_XYZ_normalize(XYZ);
-   if (result != 0)
-      return result;
-
-   result = png_xy_from_XYZ(xy, XYZ);
-   if (result != 0)
-      return result;
-
-   XYZtemp = *XYZ;
-   return png_colorspace_check_xy(&XYZtemp, xy);
-}
-
-/* Used to check for an endpoint match against sRGB */
-static const png_xy sRGB_xy = /* From ITU-R BT.709-3 */
-{
-   /* color      x       y */
-   /* red   */ 64000, 33000,
-   /* green */ 30000, 60000,
-   /* blue  */ 15000,  6000,
-   /* white */ 31270, 32900
-};
-
-static int
-png_colorspace_set_xy_and_XYZ(png_const_structrp png_ptr,
-    png_colorspacerp colorspace, const png_xy *xy, const png_XYZ *XYZ,
-    int preferred)
-{
-   if ((colorspace->flags & PNG_COLORSPACE_INVALID) != 0)
-      return 0;
-
-   /* The consistency check is performed on the chromaticities; this factors out
-    * variations because of the normalization (or not) of the end point Y
-    * values.
-    */
-   if (preferred < 2 &&
-       (colorspace->flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
-   {
-      /* The end points must be reasonably close to any we already have.  The
-       * following allows an error of up to +/-.001
-       */
-      if (png_colorspace_endpoints_match(xy, &colorspace->end_points_xy,
-          100) == 0)
-      {
-         colorspace->flags |= PNG_COLORSPACE_INVALID;
-         png_benign_error(png_ptr, "inconsistent chromaticities");
-         return 0; /* failed */
-      }
-
-      /* Only overwrite with preferred values */
-      if (preferred == 0)
-         return 1; /* ok, but no change */
-   }
-
-   colorspace->end_points_xy = *xy;
-   colorspace->end_points_XYZ = *XYZ;
-   colorspace->flags |= PNG_COLORSPACE_HAVE_ENDPOINTS;
-
-   /* The end points are normally quoted to two decimal digits, so allow +/-0.01
-    * on this test.
-    */
-   if (png_colorspace_endpoints_match(xy, &sRGB_xy, 1000) != 0)
-      colorspace->flags |= PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB;
-
-   else
-      colorspace->flags &= PNG_COLORSPACE_CANCEL(
-         PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB);
-
-   return 2; /* ok and changed */
-}
-
-int /* PRIVATE */
-png_colorspace_set_chromaticities(png_const_structrp png_ptr,
-    png_colorspacerp colorspace, const png_xy *xy, int preferred)
-{
-   /* We must check the end points to ensure they are reasonable - in the past
-    * color management systems have crashed as a result of getting bogus
-    * colorant values, while this isn't the fault of libpng it is the
-    * responsibility of libpng because PNG carries the bomb and libpng is in a
-    * position to protect against it.
-    */
-   png_XYZ XYZ;
-
-   switch (png_colorspace_check_xy(&XYZ, xy))
-   {
-      case 0: /* success */
-         return png_colorspace_set_xy_and_XYZ(png_ptr, colorspace, xy, &XYZ,
-             preferred);
-
-      case 1:
-         /* We can't invert the chromaticities so we can't produce value XYZ
-          * values.  Likely as not a color management system will fail too.
-          */
-         colorspace->flags |= PNG_COLORSPACE_INVALID;
-         png_benign_error(png_ptr, "invalid chromaticities");
-         break;
-
-      default:
-         /* libpng is broken; this should be a warning but if it happens we
-          * want error reports so for the moment it is an error.
-          */
-         colorspace->flags |= PNG_COLORSPACE_INVALID;
-         png_error(png_ptr, "internal error checking chromaticities");
-   }
-
-   return 0; /* failed */
-}
-
-int /* PRIVATE */
-png_colorspace_set_endpoints(png_const_structrp png_ptr,
-    png_colorspacerp colorspace, const png_XYZ *XYZ_in, int preferred)
-{
-   png_XYZ XYZ = *XYZ_in;
-   png_xy xy;
-
-   switch (png_colorspace_check_XYZ(&xy, &XYZ))
-   {
-      case 0:
-         return png_colorspace_set_xy_and_XYZ(png_ptr, colorspace, &xy, &XYZ,
-             preferred);
-
-      case 1:
-         /* End points are invalid. */
-         colorspace->flags |= PNG_COLORSPACE_INVALID;
-         png_benign_error(png_ptr, "invalid end points");
-         break;
-
-      default:
-         colorspace->flags |= PNG_COLORSPACE_INVALID;
-         png_error(png_ptr, "internal error checking chromaticities");
-   }
-
-   return 0; /* failed */
-}
-
-#if defined(PNG_sRGB_SUPPORTED) || defined(PNG_iCCP_SUPPORTED)
+#ifdef PNG_READ_iCCP_SUPPORTED
 /* Error message generation */
 static char
 png_icc_tag_char(png_uint_32 byte)
@@ -1900,15 +1531,12 @@
 }
 
 static int
-png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace,
-    png_const_charp name, png_alloc_size_t value, png_const_charp reason)
+png_icc_profile_error(png_const_structrp png_ptr, png_const_charp name,
+   png_alloc_size_t value, png_const_charp reason)
 {
    size_t pos;
    char message[196]; /* see below for calculation */
 
-   if (colorspace != NULL)
-      colorspace->flags |= PNG_COLORSPACE_INVALID;
-
    pos = png_safecat(message, (sizeof message), 0, "profile '"); /* 9 chars */
    pos = png_safecat(message, pos+79, pos, name); /* Truncate to 79 chars */
    pos = png_safecat(message, (sizeof message), pos, "': "); /* +2 = 90 */
@@ -1935,109 +1563,11 @@
    pos = png_safecat(message, (sizeof message), pos, reason);
    PNG_UNUSED(pos)
 
-   /* This is recoverable, but make it unconditionally an app_error on write to
-    * avoid writing invalid ICC profiles into PNG files (i.e., we handle them
-    * on read, with a warning, but on write unless the app turns off
-    * application errors the PNG won't be written.)
-    */
-   png_chunk_report(png_ptr, message,
-       (colorspace != NULL) ? PNG_CHUNK_ERROR : PNG_CHUNK_WRITE_ERROR);
+   png_chunk_benign_error(png_ptr, message);
 
    return 0;
 }
-#endif /* sRGB || iCCP */
 
-#ifdef PNG_sRGB_SUPPORTED
-int /* PRIVATE */
-png_colorspace_set_sRGB(png_const_structrp png_ptr, png_colorspacerp colorspace,
-    int intent)
-{
-   /* sRGB sets known gamma, end points and (from the chunk) intent. */
-   /* IMPORTANT: these are not necessarily the values found in an ICC profile
-    * because ICC profiles store values adapted to a D50 environment; it is
-    * expected that the ICC profile mediaWhitePointTag will be D50; see the
-    * checks and code elsewhere to understand this better.
-    *
-    * These XYZ values, which are accurate to 5dp, produce rgb to gray
-    * coefficients of (6968,23435,2366), which are reduced (because they add up
-    * to 32769 not 32768) to (6968,23434,2366).  These are the values that
-    * libpng has traditionally used (and are the best values given the 15bit
-    * algorithm used by the rgb to gray code.)
-    */
-   static const png_XYZ sRGB_XYZ = /* D65 XYZ (*not* the D50 adapted values!) */
-   {
-      /* color      X      Y      Z */
-      /* red   */ 41239, 21264,  1933,
-      /* green */ 35758, 71517, 11919,
-      /* blue  */ 18048,  7219, 95053
-   };
-
-   /* Do nothing if the colorspace is already invalidated. */
-   if ((colorspace->flags & PNG_COLORSPACE_INVALID) != 0)
-      return 0;
-
-   /* Check the intent, then check for existing settings.  It is valid for the
-    * PNG file to have cHRM or gAMA chunks along with sRGB, but the values must
-    * be consistent with the correct values.  If, however, this function is
-    * called below because an iCCP chunk matches sRGB then it is quite
-    * conceivable that an older app recorded incorrect gAMA and cHRM because of
-    * an incorrect calculation based on the values in the profile - this does
-    * *not* invalidate the profile (though it still produces an error, which can
-    * be ignored.)
-    */
-   if (intent < 0 || intent >= PNG_sRGB_INTENT_LAST)
-      return png_icc_profile_error(png_ptr, colorspace, "sRGB",
-          (png_alloc_size_t)intent, "invalid sRGB rendering intent");
-
-   if ((colorspace->flags & PNG_COLORSPACE_HAVE_INTENT) != 0 &&
-       colorspace->rendering_intent != intent)
-      return png_icc_profile_error(png_ptr, colorspace, "sRGB",
-         (png_alloc_size_t)intent, "inconsistent rendering intents");
-
-   if ((colorspace->flags & PNG_COLORSPACE_FROM_sRGB) != 0)
-   {
-      png_benign_error(png_ptr, "duplicate sRGB information ignored");
-      return 0;
-   }
-
-   /* If the standard sRGB cHRM chunk does not match the one from the PNG file
-    * warn but overwrite the value with the correct one.
-    */
-   if ((colorspace->flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0 &&
-       !png_colorspace_endpoints_match(&sRGB_xy, &colorspace->end_points_xy,
-       100))
-      png_chunk_report(png_ptr, "cHRM chunk does not match sRGB",
-         PNG_CHUNK_ERROR);
-
-   /* This check is just done for the error reporting - the routine always
-    * returns true when the 'from' argument corresponds to sRGB (2).
-    */
-   (void)png_colorspace_check_gamma(png_ptr, colorspace, PNG_GAMMA_sRGB_INVERSE,
-       2/*from sRGB*/);
-
-   /* intent: bugs in GCC force 'int' to be used as the parameter type. */
-   colorspace->rendering_intent = (png_uint_16)intent;
-   colorspace->flags |= PNG_COLORSPACE_HAVE_INTENT;
-
-   /* endpoints */
-   colorspace->end_points_xy = sRGB_xy;
-   colorspace->end_points_XYZ = sRGB_XYZ;
-   colorspace->flags |=
-      (PNG_COLORSPACE_HAVE_ENDPOINTS|PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB);
-
-   /* gamma */
-   colorspace->gamma = PNG_GAMMA_sRGB_INVERSE;
-   colorspace->flags |= PNG_COLORSPACE_HAVE_GAMMA;
-
-   /* Finally record that we have an sRGB profile */
-   colorspace->flags |=
-      (PNG_COLORSPACE_MATCHES_sRGB|PNG_COLORSPACE_FROM_sRGB);
-
-   return 1; /* set */
-}
-#endif /* sRGB */
-
-#ifdef PNG_iCCP_SUPPORTED
 /* Encoded value of D50 as an ICC XYZNumber.  From the ICC 2010 spec the value
  * is XYZ(0.9642,1.0,0.8249), which scales to:
  *
@@ -2047,21 +1577,19 @@
    { 0x00, 0x00, 0xf6, 0xd6, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0xd3, 0x2d };
 
 static int /* bool */
-icc_check_length(png_const_structrp png_ptr, png_colorspacerp colorspace,
-    png_const_charp name, png_uint_32 profile_length)
+icc_check_length(png_const_structrp png_ptr, png_const_charp name,
+   png_uint_32 profile_length)
 {
    if (profile_length < 132)
-      return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
-          "too short");
+      return png_icc_profile_error(png_ptr, name, profile_length, "too short");
    return 1;
 }
 
-#ifdef PNG_READ_iCCP_SUPPORTED
 int /* PRIVATE */
-png_icc_check_length(png_const_structrp png_ptr, png_colorspacerp colorspace,
-    png_const_charp name, png_uint_32 profile_length)
+png_icc_check_length(png_const_structrp png_ptr, png_const_charp name,
+   png_uint_32 profile_length)
 {
-   if (!icc_check_length(png_ptr, colorspace, name, profile_length))
+   if (!icc_check_length(png_ptr, name, profile_length))
       return 0;
 
    /* This needs to be here because the 'normal' check is in
@@ -2070,30 +1598,17 @@
     * the caller supplies the profile buffer so libpng doesn't allocate it.  See
     * the call to icc_check_length below (the write case).
     */
-#  ifdef PNG_SET_USER_LIMITS_SUPPORTED
-      else if (png_ptr->user_chunk_malloc_max > 0 &&
-               png_ptr->user_chunk_malloc_max < profile_length)
-         return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
-             "exceeds application limits");
-#  elif PNG_USER_CHUNK_MALLOC_MAX > 0
-      else if (PNG_USER_CHUNK_MALLOC_MAX < profile_length)
-         return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
-             "exceeds libpng limits");
-#  else /* !SET_USER_LIMITS */
-      /* This will get compiled out on all 32-bit and better systems. */
-      else if (PNG_SIZE_MAX < profile_length)
-         return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
-             "exceeds system limits");
-#  endif /* !SET_USER_LIMITS */
+   if (profile_length > png_chunk_max(png_ptr))
+      return png_icc_profile_error(png_ptr, name, profile_length,
+            "profile too long");
 
    return 1;
 }
-#endif /* READ_iCCP */
 
 int /* PRIVATE */
-png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
-    png_const_charp name, png_uint_32 profile_length,
-    png_const_bytep profile/* first 132 bytes only */, int color_type)
+png_icc_check_header(png_const_structrp png_ptr, png_const_charp name,
+   png_uint_32 profile_length,
+   png_const_bytep profile/* first 132 bytes only */, int color_type)
 {
    png_uint_32 temp;
 
@@ -2104,18 +1619,18 @@
     */
    temp = png_get_uint_32(profile);
    if (temp != profile_length)
-      return png_icc_profile_error(png_ptr, colorspace, name, temp,
+      return png_icc_profile_error(png_ptr, name, temp,
           "length does not match profile");
 
    temp = (png_uint_32) (*(profile+8));
    if (temp > 3 && (profile_length & 3))
-      return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
+      return png_icc_profile_error(png_ptr, name, profile_length,
           "invalid length");
 
    temp = png_get_uint_32(profile+128); /* tag count: 12 bytes/tag */
    if (temp > 357913930 || /* (2^32-4-132)/12: maximum possible tag count */
       profile_length < 132+12*temp) /* truncated tag table */
-      return png_icc_profile_error(png_ptr, colorspace, name, temp,
+      return png_icc_profile_error(png_ptr, name, temp,
           "tag count too large");
 
    /* The 'intent' must be valid or we can't store it, ICC limits the intent to
@@ -2123,7 +1638,7 @@
     */
    temp = png_get_uint_32(profile+64);
    if (temp >= 0xffff) /* The ICC limit */
-      return png_icc_profile_error(png_ptr, colorspace, name, temp,
+      return png_icc_profile_error(png_ptr, name, temp,
           "invalid rendering intent");
 
    /* This is just a warning because the profile may be valid in future
@@ -2130,7 +1645,7 @@
     * versions.
     */
    if (temp >= PNG_sRGB_INTENT_LAST)
-      (void)png_icc_profile_error(png_ptr, NULL, name, temp,
+      (void)png_icc_profile_error(png_ptr, name, temp,
           "intent outside defined range");
 
    /* At this point the tag table can't be checked because it hasn't necessarily
@@ -2147,7 +1662,7 @@
     */
    temp = png_get_uint_32(profile+36); /* signature 'ascp' */
    if (temp != 0x61637370)
-      return png_icc_profile_error(png_ptr, colorspace, name, temp,
+      return png_icc_profile_error(png_ptr, name, temp,
           "invalid signature");
 
    /* Currently the PCS illuminant/adopted white point (the computational
@@ -2158,7 +1673,7 @@
     * following is just a warning.
     */
    if (memcmp(profile+68, D50_nCIEXYZ, 12) != 0)
-      (void)png_icc_profile_error(png_ptr, NULL, name, 0/*no tag value*/,
+      (void)png_icc_profile_error(png_ptr, name, 0/*no tag value*/,
           "PCS illuminant is not D50");
 
    /* The PNG spec requires this:
@@ -2186,18 +1701,18 @@
    {
       case 0x52474220: /* 'RGB ' */
          if ((color_type & PNG_COLOR_MASK_COLOR) == 0)
-            return png_icc_profile_error(png_ptr, colorspace, name, temp,
+            return png_icc_profile_error(png_ptr, name, temp,
                 "RGB color space not permitted on grayscale PNG");
          break;
 
       case 0x47524159: /* 'GRAY' */
          if ((color_type & PNG_COLOR_MASK_COLOR) != 0)
-            return png_icc_profile_error(png_ptr, colorspace, name, temp,
+            return png_icc_profile_error(png_ptr, name, temp,
                 "Gray color space not permitted on RGB PNG");
          break;
 
       default:
-         return png_icc_profile_error(png_ptr, colorspace, name, temp,
+         return png_icc_profile_error(png_ptr, name, temp,
              "invalid ICC profile color space");
    }
 
@@ -2222,7 +1737,7 @@
 
       case 0x61627374: /* 'abst' */
          /* May not be embedded in an image */
-         return png_icc_profile_error(png_ptr, colorspace, name, temp,
+         return png_icc_profile_error(png_ptr, name, temp,
              "invalid embedded Abstract ICC profile");
 
       case 0x6c696e6b: /* 'link' */
@@ -2232,7 +1747,7 @@
           * therefore a DeviceLink profile should not be found embedded in a
           * PNG.
           */
-         return png_icc_profile_error(png_ptr, colorspace, name, temp,
+         return png_icc_profile_error(png_ptr, name, temp,
              "unexpected DeviceLink ICC profile class");
 
       case 0x6e6d636c: /* 'nmcl' */
@@ -2240,7 +1755,7 @@
           * contain an AToB0 tag that is open to misinterpretation.  Almost
           * certainly it will fail the tests below.
           */
-         (void)png_icc_profile_error(png_ptr, NULL, name, temp,
+         (void)png_icc_profile_error(png_ptr, name, temp,
              "unexpected NamedColor ICC profile class");
          break;
 
@@ -2250,7 +1765,7 @@
           * tag content to ensure they are backward compatible with one of the
           * understood profiles.
           */
-         (void)png_icc_profile_error(png_ptr, NULL, name, temp,
+         (void)png_icc_profile_error(png_ptr, name, temp,
              "unrecognized ICC profile class");
          break;
    }
@@ -2266,7 +1781,7 @@
          break;
 
       default:
-         return png_icc_profile_error(png_ptr, colorspace, name, temp,
+         return png_icc_profile_error(png_ptr, name, temp,
              "unexpected ICC PCS encoding");
    }
 
@@ -2274,9 +1789,9 @@
 }
 
 int /* PRIVATE */
-png_icc_check_tag_table(png_const_structrp png_ptr, png_colorspacerp colorspace,
-    png_const_charp name, png_uint_32 profile_length,
-    png_const_bytep profile /* header plus whole tag table */)
+png_icc_check_tag_table(png_const_structrp png_ptr, png_const_charp name,
+   png_uint_32 profile_length,
+   png_const_bytep profile /* header plus whole tag table */)
 {
    png_uint_32 tag_count = png_get_uint_32(profile+128);
    png_uint_32 itag;
@@ -2302,7 +1817,7 @@
        * profile.
        */
       if (tag_start > profile_length || tag_length > profile_length - tag_start)
-         return png_icc_profile_error(png_ptr, colorspace, name, tag_id,
+         return png_icc_profile_error(png_ptr, name, tag_id,
              "ICC profile tag outside profile");
 
       if ((tag_start & 3) != 0)
@@ -2311,7 +1826,7 @@
           * only a warning here because libpng does not care about the
           * alignment.
           */
-         (void)png_icc_profile_error(png_ptr, NULL, name, tag_id,
+         (void)png_icc_profile_error(png_ptr, name, tag_id,
              "ICC profile tag start not a multiple of 4");
       }
    }
@@ -2318,300 +1833,125 @@
 
    return 1; /* success, maybe with warnings */
 }
+#endif /* READ_iCCP */
 
-#ifdef PNG_sRGB_SUPPORTED
-#if PNG_sRGB_PROFILE_CHECKS >= 0
-/* Information about the known ICC sRGB profiles */
-static const struct
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+#if (defined PNG_READ_mDCV_SUPPORTED) || (defined PNG_READ_cHRM_SUPPORTED)
+static int
+have_chromaticities(png_const_structrp png_ptr)
 {
-   png_uint_32 adler, crc, length;
-   png_uint_32 md5[4];
-   png_byte    have_md5;
-   png_byte    is_broken;
-   png_uint_16 intent;
-
-#  define PNG_MD5(a,b,c,d) { a, b, c, d }, (a!=0)||(b!=0)||(c!=0)||(d!=0)
-#  define PNG_ICC_CHECKSUM(adler, crc, md5, intent, broke, date, length, fname)\
-      { adler, crc, length, md5, broke, intent },
-
-} png_sRGB_checks[] =
-{
-   /* This data comes from contrib/tools/checksum-icc run on downloads of
-    * all four ICC sRGB profiles from www.color.org.
+   /* Handle new PNGv3 chunks and the precedence rules to determine whether
+    * png_struct::chromaticities must be processed.  Only required for RGB to
+    * gray.
+    *
+    * mDCV: this is the mastering colour space and it is independent of the
+    *       encoding so it needs to be used regardless of the encoded space.
+    *
+    * cICP: first in priority but not yet implemented - the chromaticities come
+    *       from the 'primaries'.
+    *
+    * iCCP: not supported by libpng (so ignored)
+    *
+    * sRGB: the defaults match sRGB
+    *
+    * cHRM: calculate the coefficients
     */
-   /* adler32, crc32, MD5[4], intent, date, length, file-name */
-   PNG_ICC_CHECKSUM(0x0a3fd9f6, 0x3b8772b9,
-       PNG_MD5(0x29f83dde, 0xaff255ae, 0x7842fae4, 0xca83390d), 0, 0,
-       "2009/03/27 21:36:31", 3048, "sRGB_IEC61966-2-1_black_scaled.icc")
+#  ifdef PNG_READ_mDCV_SUPPORTED
+      if (png_has_chunk(png_ptr, mDCV))
+         return 1;
+#     define check_chromaticities 1
+#  endif /*mDCV*/
 
-   /* ICC sRGB v2 perceptual no black-compensation: */
-   PNG_ICC_CHECKSUM(0x4909e5e1, 0x427ebb21,
-       PNG_MD5(0xc95bd637, 0xe95d8a3b, 0x0df38f99, 0xc1320389), 1, 0,
-       "2009/03/27 21:37:45", 3052, "sRGB_IEC61966-2-1_no_black_scaling.icc")
+#  ifdef PNG_READ_sRGB_SUPPORTED
+      if (png_has_chunk(png_ptr, sRGB))
+         return 0;
+#  endif /*sRGB*/
 
-   PNG_ICC_CHECKSUM(0xfd2144a1, 0x306fd8ae,
-       PNG_MD5(0xfc663378, 0x37e2886b, 0xfd72e983, 0x8228f1b8), 0, 0,
-       "2009/08/10 17:28:01", 60988, "sRGB_v4_ICC_preference_displayclass.icc")
+#  ifdef PNG_READ_cHRM_SUPPORTED
+      if (png_has_chunk(png_ptr, cHRM))
+         return 1;
+#     define check_chromaticities 1
+#  endif /*cHRM*/
 
-   /* ICC sRGB v4 perceptual */
-   PNG_ICC_CHECKSUM(0x209c35d2, 0xbbef7812,
-       PNG_MD5(0x34562abf, 0x994ccd06, 0x6d2c5721, 0xd0d68c5d), 0, 0,
-       "2007/07/25 00:05:37", 60960, "sRGB_v4_ICC_preference.icc")
+   return 0; /* sRGB defaults */
+}
+#endif /* READ_mDCV || READ_cHRM */
 
-   /* The following profiles have no known MD5 checksum. If there is a match
-    * on the (empty) MD5 the other fields are used to attempt a match and
-    * a warning is produced.  The first two of these profiles have a 'cprt' tag
-    * which suggests that they were also made by Hewlett Packard.
-    */
-   PNG_ICC_CHECKSUM(0xa054d762, 0x5d5129ce,
-       PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 0,
-       "2004/07/21 18:57:42", 3024, "sRGB_IEC61966-2-1_noBPC.icc")
-
-   /* This is a 'mntr' (display) profile with a mediaWhitePointTag that does not
-    * match the D50 PCS illuminant in the header (it is in fact the D65 values,
-    * so the white point is recorded as the un-adapted value.)  The profiles
-    * below only differ in one byte - the intent - and are basically the same as
-    * the previous profile except for the mediaWhitePointTag error and a missing
-    * chromaticAdaptationTag.
-    */
-   PNG_ICC_CHECKSUM(0xf784f3fb, 0x182ea552,
-       PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 0, 1/*broken*/,
-       "1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 perceptual")
-
-   PNG_ICC_CHECKSUM(0x0398f3fc, 0xf29e526d,
-       PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 1/*broken*/,
-       "1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 media-relative")
-};
-
-static int
-png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
-    png_const_bytep profile, uLong adler)
+void /* PRIVATE */
+png_set_rgb_coefficients(png_structrp png_ptr)
 {
-   /* The quick check is to verify just the MD5 signature and trust the
-    * rest of the data.  Because the profile has already been verified for
-    * correctness this is safe.  png_colorspace_set_sRGB will check the 'intent'
-    * field too, so if the profile has been edited with an intent not defined
-    * by sRGB (but maybe defined by a later ICC specification) the read of
-    * the profile will fail at that point.
+   /* Set the rgb_to_gray coefficients from the colorspace if available.  Note
+    * that '_set' means that png_rgb_to_gray was called **and** it successfully
+    * set up the coefficients.
     */
+   if (png_ptr->rgb_to_gray_coefficients_set == 0)
+   {
+#  if check_chromaticities
+      png_XYZ xyz;
 
-   png_uint_32 length = 0;
-   png_uint_32 intent = 0x10000; /* invalid */
-#if PNG_sRGB_PROFILE_CHECKS > 1
-   uLong crc = 0; /* the value for 0 length data */
-#endif
-   unsigned int i;
-
-#ifdef PNG_SET_OPTION_SUPPORTED
-   /* First see if PNG_SKIP_sRGB_CHECK_PROFILE has been set to "on" */
-   if (((png_ptr->options >> PNG_SKIP_sRGB_CHECK_PROFILE) & 3) ==
-               PNG_OPTION_ON)
-      return 0;
-#endif
-
-   for (i=0; i < (sizeof png_sRGB_checks) / (sizeof png_sRGB_checks[0]); ++i)
-   {
-      if (png_get_uint_32(profile+84) == png_sRGB_checks[i].md5[0] &&
-         png_get_uint_32(profile+88) == png_sRGB_checks[i].md5[1] &&
-         png_get_uint_32(profile+92) == png_sRGB_checks[i].md5[2] &&
-         png_get_uint_32(profile+96) == png_sRGB_checks[i].md5[3])
+      if (have_chromaticities(png_ptr) &&
+          png_XYZ_from_xy(&xyz, &png_ptr->chromaticities) == 0)
       {
-         /* This may be one of the old HP profiles without an MD5, in that
-          * case we can only use the length and Adler32 (note that these
-          * are not used by default if there is an MD5!)
+         /* png_set_rgb_to_gray has not set the coefficients, get them from the
+          * Y * values of the colorspace colorants.
           */
-#        if PNG_sRGB_PROFILE_CHECKS == 0
-            if (png_sRGB_checks[i].have_md5 != 0)
-               return 1+png_sRGB_checks[i].is_broken;
-#        endif
+         png_fixed_point r = xyz.red_Y;
+         png_fixed_point g = xyz.green_Y;
+         png_fixed_point b = xyz.blue_Y;
+         png_fixed_point total = r+g+b;
 
-         /* Profile is unsigned or more checks have been configured in. */
-         if (length == 0)
+         if (total > 0 &&
+            r >= 0 && png_muldiv(&r, r, 32768, total) && r >= 0 && r <= 32768 &&
+            g >= 0 && png_muldiv(&g, g, 32768, total) && g >= 0 && g <= 32768 &&
+            b >= 0 && png_muldiv(&b, b, 32768, total) && b >= 0 && b <= 32768 &&
+            r+g+b <= 32769)
          {
-            length = png_get_uint_32(profile);
-            intent = png_get_uint_32(profile+64);
-         }
+            /* We allow 0 coefficients here.  r+g+b may be 32769 if two or
+             * all of the coefficients were rounded up.  Handle this by
+             * reducing the *largest* coefficient by 1; this matches the
+             * approach used for the default coefficients in pngrtran.c
+             */
+            int add = 0;
 
-         /* Length *and* intent must match */
-         if (length == (png_uint_32) png_sRGB_checks[i].length &&
-            intent == (png_uint_32) png_sRGB_checks[i].intent)
-         {
-            /* Now calculate the adler32 if not done already. */
-            if (adler == 0)
+            if (r+g+b > 32768)
+               add = -1;
+            else if (r+g+b < 32768)
+               add = 1;
+
+            if (add != 0)
             {
-               adler = adler32(0, NULL, 0);
-               adler = adler32(adler, profile, length);
+               if (g >= r && g >= b)
+                  g += add;
+               else if (r >= g && r >= b)
+                  r += add;
+               else
+                  b += add;
             }
 
-            if (adler == png_sRGB_checks[i].adler)
+            /* Check for an internal error. */
+            if (r+g+b != 32768)
+               png_error(png_ptr,
+                   "internal error handling cHRM coefficients");
+
+            else
             {
-               /* These basic checks suggest that the data has not been
-                * modified, but if the check level is more than 1 perform
-                * our own crc32 checksum on the data.
-                */
-#              if PNG_sRGB_PROFILE_CHECKS > 1
-                  if (crc == 0)
-                  {
-                     crc = crc32(0, NULL, 0);
-                     crc = crc32(crc, profile, length);
-                  }
-
-                  /* So this check must pass for the 'return' below to happen.
-                   */
-                  if (crc == png_sRGB_checks[i].crc)
-#              endif
-               {
-                  if (png_sRGB_checks[i].is_broken != 0)
-                  {
-                     /* These profiles are known to have bad data that may cause
-                      * problems if they are used, therefore attempt to
-                      * discourage their use, skip the 'have_md5' warning below,
-                      * which is made irrelevant by this error.
-                      */
-                     png_chunk_report(png_ptr, "known incorrect sRGB profile",
-                         PNG_CHUNK_ERROR);
-                  }
-
-                  /* Warn that this being done; this isn't even an error since
-                   * the profile is perfectly valid, but it would be nice if
-                   * people used the up-to-date ones.
-                   */
-                  else if (png_sRGB_checks[i].have_md5 == 0)
-                  {
-                     png_chunk_report(png_ptr,
-                         "out-of-date sRGB profile with no signature",
-                         PNG_CHUNK_WARNING);
-                  }
-
-                  return 1+png_sRGB_checks[i].is_broken;
-               }
+               png_ptr->rgb_to_gray_red_coeff   = (png_uint_16)r;
+               png_ptr->rgb_to_gray_green_coeff = (png_uint_16)g;
             }
-
-# if PNG_sRGB_PROFILE_CHECKS > 0
-         /* The signature matched, but the profile had been changed in some
-          * way.  This probably indicates a data error or uninformed hacking.
-          * Fall through to "no match".
-          */
-         png_chunk_report(png_ptr,
-             "Not recognizing known sRGB profile that has been edited",
-             PNG_CHUNK_WARNING);
-         break;
-# endif
          }
       }
-   }
-
-   return 0; /* no match */
-}
-
-void /* PRIVATE */
-png_icc_set_sRGB(png_const_structrp png_ptr,
-    png_colorspacerp colorspace, png_const_bytep profile, uLong adler)
-{
-   /* Is this profile one of the known ICC sRGB profiles?  If it is, just set
-    * the sRGB information.
-    */
-   if (png_compare_ICC_profile_with_sRGB(png_ptr, profile, adler) != 0)
-      (void)png_colorspace_set_sRGB(png_ptr, colorspace,
-         (int)/*already checked*/png_get_uint_32(profile+64));
-}
-#endif /* PNG_sRGB_PROFILE_CHECKS >= 0 */
-#endif /* sRGB */
-
-int /* PRIVATE */
-png_colorspace_set_ICC(png_const_structrp png_ptr, png_colorspacerp colorspace,
-    png_const_charp name, png_uint_32 profile_length, png_const_bytep profile,
-    int color_type)
-{
-   if ((colorspace->flags & PNG_COLORSPACE_INVALID) != 0)
-      return 0;
-
-   if (icc_check_length(png_ptr, colorspace, name, profile_length) != 0 &&
-       png_icc_check_header(png_ptr, colorspace, name, profile_length, profile,
-           color_type) != 0 &&
-       png_icc_check_tag_table(png_ptr, colorspace, name, profile_length,
-           profile) != 0)
-   {
-#     if defined(PNG_sRGB_SUPPORTED) && PNG_sRGB_PROFILE_CHECKS >= 0
-         /* If no sRGB support, don't try storing sRGB information */
-         png_icc_set_sRGB(png_ptr, colorspace, profile, 0);
-#     endif
-      return 1;
-   }
-
-   /* Failure case */
-   return 0;
-}
-#endif /* iCCP */
-
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-void /* PRIVATE */
-png_colorspace_set_rgb_coefficients(png_structrp png_ptr)
-{
-   /* Set the rgb_to_gray coefficients from the colorspace. */
-   if (png_ptr->rgb_to_gray_coefficients_set == 0 &&
-      (png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
-   {
-      /* png_set_background has not been called, get the coefficients from the Y
-       * values of the colorspace colorants.
-       */
-      png_fixed_point r = png_ptr->colorspace.end_points_XYZ.red_Y;
-      png_fixed_point g = png_ptr->colorspace.end_points_XYZ.green_Y;
-      png_fixed_point b = png_ptr->colorspace.end_points_XYZ.blue_Y;
-      png_fixed_point total = r+g+b;
-
-      if (total > 0 &&
-         r >= 0 && png_muldiv(&r, r, 32768, total) && r >= 0 && r <= 32768 &&
-         g >= 0 && png_muldiv(&g, g, 32768, total) && g >= 0 && g <= 32768 &&
-         b >= 0 && png_muldiv(&b, b, 32768, total) && b >= 0 && b <= 32768 &&
-         r+g+b <= 32769)
+      else
+#  endif /* check_chromaticities */
       {
-         /* We allow 0 coefficients here.  r+g+b may be 32769 if two or
-          * all of the coefficients were rounded up.  Handle this by
-          * reducing the *largest* coefficient by 1; this matches the
-          * approach used for the default coefficients in pngrtran.c
-          */
-         int add = 0;
-
-         if (r+g+b > 32768)
-            add = -1;
-         else if (r+g+b < 32768)
-            add = 1;
-
-         if (add != 0)
-         {
-            if (g >= r && g >= b)
-               g += add;
-            else if (r >= g && r >= b)
-               r += add;
-            else
-               b += add;
-         }
-
-         /* Check for an internal error. */
-         if (r+g+b != 32768)
-            png_error(png_ptr,
-                "internal error handling cHRM coefficients");
-
-         else
-         {
-            png_ptr->rgb_to_gray_red_coeff   = (png_uint_16)r;
-            png_ptr->rgb_to_gray_green_coeff = (png_uint_16)g;
-         }
+         /* Use the historical REC 709 (etc) values: */
+         png_ptr->rgb_to_gray_red_coeff   = 6968;
+         png_ptr->rgb_to_gray_green_coeff = 23434;
+         /* png_ptr->rgb_to_gray_blue_coeff  = 2366; */
       }
-
-      /* This is a png_error at present even though it could be ignored -
-       * it should never happen, but it is important that if it does, the
-       * bug is fixed.
-       */
-      else
-         png_error(png_ptr, "internal error handling cHRM->XYZ");
    }
 }
 #endif /* READ_RGB_TO_GRAY */
 
-#endif /* COLORSPACE */
-
 void /* PRIVATE */
 png_check_IHDR(png_const_structrp png_ptr,
     png_uint_32 width, png_uint_32 height, int bit_depth,
@@ -3413,7 +2753,7 @@
 #endif
 
 
-#if defined(PNG_GAMMA_SUPPORTED) || defined(PNG_COLORSPACE_SUPPORTED) ||\
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_COLORSPACE_SUPPORTED) ||\
     defined(PNG_INCH_CONVERSIONS_SUPPORTED) || defined(PNG_READ_pHYs_SUPPORTED)
 /* muldiv functions */
 /* This API takes signed arguments and rounds the result to the nearest
@@ -3421,7 +2761,7 @@
  * the nearest .00001).  Overflow and divide by zero are signalled in
  * the result, a boolean - true on success, false on overflow.
  */
-int
+int /* PRIVATE */
 png_muldiv(png_fixed_point_p res, png_fixed_point a, png_int_32 times,
     png_int_32 divisor)
 {
@@ -3535,27 +2875,7 @@
 
    return 0;
 }
-#endif /* READ_GAMMA || INCH_CONVERSIONS */
 
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_INCH_CONVERSIONS_SUPPORTED)
-/* The following is for when the caller doesn't much care about the
- * result.
- */
-png_fixed_point
-png_muldiv_warn(png_const_structrp png_ptr, png_fixed_point a, png_int_32 times,
-    png_int_32 divisor)
-{
-   png_fixed_point result;
-
-   if (png_muldiv(&result, a, times, divisor) != 0)
-      return result;
-
-   png_warning(png_ptr, "fixed point overflow ignored");
-   return 0;
-}
-#endif
-
-#ifdef PNG_GAMMA_SUPPORTED /* more fixed point functions for gamma */
 /* Calculate a reciprocal, return 0 on div-by-zero or overflow. */
 png_fixed_point
 png_reciprocal(png_fixed_point a)
@@ -3574,7 +2894,9 @@
 
    return 0; /* error/overflow */
 }
+#endif /* READ_GAMMA || COLORSPACE || INCH_CONVERSIONS || READ_pHYS */
 
+#ifdef PNG_READ_GAMMA_SUPPORTED
 /* This is the shared test on whether a gamma value is 'significant' - whether
  * it is worth doing gamma correction.
  */
@@ -3581,19 +2903,29 @@
 int /* PRIVATE */
 png_gamma_significant(png_fixed_point gamma_val)
 {
+   /* sRGB:       1/2.2 == 0.4545(45)
+    * AdobeRGB:   1/(2+51/256) ~= 0.45471 5dp
+    *
+    * So the correction from AdobeRGB to sRGB (output) is:
+    *
+    *    2.2/(2+51/256) == 1.00035524
+    *
+    * I.e. vanishly small (<4E-4) but still detectable in 16-bit linear (+/-
+    * 23).  Note that the Adobe choice seems to be something intended to give an
+    * exact number with 8 binary fractional digits - it is the closest to 2.2
+    * that is possible a base 2 .8p representation.
+    */
    return gamma_val < PNG_FP_1 - PNG_GAMMA_THRESHOLD_FIXED ||
        gamma_val > PNG_FP_1 + PNG_GAMMA_THRESHOLD_FIXED;
 }
-#endif
 
-#ifdef PNG_READ_GAMMA_SUPPORTED
-#ifdef PNG_16BIT_SUPPORTED
+#ifndef PNG_FLOATING_ARITHMETIC_SUPPORTED
 /* A local convenience routine. */
 static png_fixed_point
 png_product2(png_fixed_point a, png_fixed_point b)
 {
-   /* The required result is 1/a * 1/b; the following preserves accuracy. */
-#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+   /* The required result is a * b; the following preserves accuracy. */
+#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED /* Should now be unused */
    double r = a * 1E-5;
    r *= b;
    r = floor(r+.5);
@@ -3609,9 +2941,8 @@
 
    return 0; /* overflow */
 }
-#endif /* 16BIT */
+#endif /* FLOATING_ARITHMETIC */
 
-/* The inverse of the above. */
 png_fixed_point
 png_reciprocal2(png_fixed_point a, png_fixed_point b)
 {
@@ -4264,10 +3595,27 @@
  * tables, we don't make a full table if we are reducing to 8-bit in
  * the future.  Note also how the gamma_16 tables are segmented so that
  * we don't need to allocate > 64K chunks for a full 16-bit table.
+ *
+ * TODO: move this to pngrtran.c and make it static.  Better yet create
+ * pngcolor.c and put all the PNG_COLORSPACE stuff in there.
  */
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+   defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
+   defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+#  define GAMMA_TRANSFORMS 1 /* #ifdef CSE */
+#else
+#  define GAMMA_TRANSFORMS 0
+#endif
+
 void /* PRIVATE */
 png_build_gamma_table(png_structrp png_ptr, int bit_depth)
 {
+   png_fixed_point file_gamma, screen_gamma;
+   png_fixed_point correction;
+#  if GAMMA_TRANSFORMS
+      png_fixed_point file_to_linear, linear_to_screen;
+#  endif
+
    png_debug(1, "in png_build_gamma_table");
 
    /* Remove any existing table; this copes with multiple calls to
@@ -4282,27 +3630,44 @@
       png_destroy_gamma_table(png_ptr);
    }
 
+   /* The following fields are set, finally, in png_init_read_transformations.
+    * If file_gamma is 0 (unset) nothing can be done otherwise if screen_gamma
+    * is 0 (unset) there is no gamma correction but to/from linear is possible.
+    */
+   file_gamma = png_ptr->file_gamma;
+   screen_gamma = png_ptr->screen_gamma;
+#  if GAMMA_TRANSFORMS
+      file_to_linear = png_reciprocal(file_gamma);
+#  endif
+
+   if (screen_gamma > 0)
+   {
+#     if GAMMA_TRANSFORMS
+         linear_to_screen = png_reciprocal(screen_gamma);
+#     endif
+      correction = png_reciprocal2(screen_gamma, file_gamma);
+   }
+   else /* screen gamma unknown */
+   {
+#     if GAMMA_TRANSFORMS
+         linear_to_screen = file_gamma;
+#     endif
+      correction = PNG_FP_1;
+   }
+
    if (bit_depth <= 8)
    {
-      png_build_8bit_table(png_ptr, &png_ptr->gamma_table,
-          png_ptr->screen_gamma > 0 ?
-          png_reciprocal2(png_ptr->colorspace.gamma,
-          png_ptr->screen_gamma) : PNG_FP_1);
+      png_build_8bit_table(png_ptr, &png_ptr->gamma_table, correction);
 
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
-   defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
-   defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+#if GAMMA_TRANSFORMS
       if ((png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY)) != 0)
       {
-         png_build_8bit_table(png_ptr, &png_ptr->gamma_to_1,
-             png_reciprocal(png_ptr->colorspace.gamma));
+         png_build_8bit_table(png_ptr, &png_ptr->gamma_to_1, file_to_linear);
 
          png_build_8bit_table(png_ptr, &png_ptr->gamma_from_1,
-             png_ptr->screen_gamma > 0 ?
-             png_reciprocal(png_ptr->screen_gamma) :
-             png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */);
+            linear_to_screen);
       }
-#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
+#endif /* GAMMA_TRANSFORMS */
    }
 #ifdef PNG_16BIT_SUPPORTED
    else
@@ -4368,22 +3733,17 @@
        * reduced to 8 bits.
        */
       if ((png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8)) != 0)
-          png_build_16to8_table(png_ptr, &png_ptr->gamma_16_table, shift,
-          png_ptr->screen_gamma > 0 ? png_product2(png_ptr->colorspace.gamma,
-          png_ptr->screen_gamma) : PNG_FP_1);
-
+         png_build_16to8_table(png_ptr, &png_ptr->gamma_16_table, shift,
+            png_reciprocal(correction));
       else
-          png_build_16bit_table(png_ptr, &png_ptr->gamma_16_table, shift,
-          png_ptr->screen_gamma > 0 ? png_reciprocal2(png_ptr->colorspace.gamma,
-          png_ptr->screen_gamma) : PNG_FP_1);
+         png_build_16bit_table(png_ptr, &png_ptr->gamma_16_table, shift,
+            correction);
 
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
-   defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
-   defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+#  if GAMMA_TRANSFORMS
       if ((png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY)) != 0)
       {
          png_build_16bit_table(png_ptr, &png_ptr->gamma_16_to_1, shift,
-             png_reciprocal(png_ptr->colorspace.gamma));
+            file_to_linear);
 
          /* Notice that the '16 from 1' table should be full precision, however
           * the lookup on this table still uses gamma_shift, so it can't be.
@@ -4390,10 +3750,9 @@
           * TODO: fix this.
           */
          png_build_16bit_table(png_ptr, &png_ptr->gamma_16_from_1, shift,
-             png_ptr->screen_gamma > 0 ? png_reciprocal(png_ptr->screen_gamma) :
-             png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */);
+            linear_to_screen);
       }
-#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
+#endif /* GAMMA_TRANSFORMS */
    }
 #endif /* 16BIT */
 }
@@ -4608,7 +3967,7 @@
 #  ifdef PNG_STDIO_SUPPORTED
       if (cp->owned_file != 0)
       {
-         FILE *fp = png_voidcast(FILE*, cp->png_ptr->io_ptr);
+         FILE *fp = png_voidcast(FILE *, cp->png_ptr->io_ptr);
          cp->owned_file = 0;
 
          /* Ignore errors here. */

Modified: branches/stable/source/src/libs/libpng/libpng-src/png.h
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/png.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/png.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.6.46
+ * libpng version 1.6.48
  *
  * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
@@ -14,7 +14,7 @@
  *   libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
  *   libpng versions 0.97, January 1998, through 1.6.35, July 2018:
  *     Glenn Randers-Pehrson
- *   libpng versions 1.6.36, December 2018, through 1.6.46, January 2025:
+ *   libpng versions 1.6.36, December 2018, through 1.6.48, April 2025:
  *     Cosmin Truta
  *   See also "Contributing Authors", below.
  */
@@ -238,7 +238,7 @@
  *    ...
  *    1.5.30                  15    10530  15.so.15.30[.0]
  *    ...
- *    1.6.46                  16    10646  16.so.16.46[.0]
+ *    1.6.48                  16    10648  16.so.16.48[.0]
  *
  *    Henceforth the source version will match the shared-library major and
  *    minor numbers; the shared-library major version number will be used for
@@ -274,7 +274,7 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.6.46"
+#define PNG_LIBPNG_VER_STRING "1.6.48"
 #define PNG_HEADER_VERSION_STRING " libpng version " PNG_LIBPNG_VER_STRING "\n"
 
 /* The versions of shared library builds should stay in sync, going forward */
@@ -285,7 +285,7 @@
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
 #define PNG_LIBPNG_VER_MINOR   6
-#define PNG_LIBPNG_VER_RELEASE 46
+#define PNG_LIBPNG_VER_RELEASE 48
 
 /* This should be zero for a public release, or non-zero for a
  * development version.
@@ -316,7 +316,7 @@
  * From version 1.0.1 it is:
  * XXYYZZ, where XX=major, YY=minor, ZZ=release
  */
-#define PNG_LIBPNG_VER 10646 /* 1.6.46 */
+#define PNG_LIBPNG_VER 10648 /* 1.6.48 */
 
 /* Library configuration: these options cannot be changed after
  * the library has been built.
@@ -426,7 +426,7 @@
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef char* png_libpng_version_1_6_46;
+typedef char* png_libpng_version_1_6_48;
 
 /* Basic control structions.  Read libpng-manual.txt or libpng.3 for more info.
  *
@@ -1570,7 +1570,7 @@
 
 #ifdef PNG_STDIO_SUPPORTED
 /* Initialize the input/output for the PNG file to the default functions. */
-PNG_EXPORT(74, void, png_init_io, (png_structrp png_ptr, png_FILE_p fp));
+PNG_EXPORT(74, void, png_init_io, (png_structrp png_ptr, FILE *fp));
 #endif
 
 /* Replace the (error and abort), and warning functions with user
@@ -3088,7 +3088,7 @@
     */
 
 PNG_EXPORT(235, int, png_image_begin_read_from_stdio, (png_imagep image,
-   FILE* file));
+   FILE *file));
    /* The PNG header is read from the stdio FILE object. */
 #endif /* STDIO */
 
@@ -3163,7 +3163,7 @@
 PNG_EXPORT(240, int, png_image_write_to_stdio, (png_imagep image, FILE *file,
    int convert_to_8_bit, const void *buffer, png_int_32 row_stride,
    const void *colormap));
-   /* Write the image to the given (FILE*). */
+   /* Write the image to the given FILE object. */
 #endif /* SIMPLIFIED_WRITE_STDIO */
 
 /* With all write APIs if image is in one of the linear formats with 16-bit

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngconf.h
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngconf.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngconf.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pngconf.h - machine-configurable file for libpng
  *
- * libpng version 1.6.46
+ * libpng version 1.6.48
  *
  * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson
@@ -219,25 +219,13 @@
   /* NOTE: PNGCBAPI always defaults to PNGCAPI. */
 
 #  if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD)
-#     error "PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed"
+#     error PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed
 #  endif
 
-#  if (defined(_MSC_VER) && _MSC_VER < 800) ||\
-      (defined(__BORLANDC__) && __BORLANDC__ < 0x500)
-   /* older Borland and MSC
-    * compilers used '__export' and required this to be after
-    * the type.
-    */
-#    ifndef PNG_EXPORT_TYPE
-#      define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
-#    endif
-#    define PNG_DLL_EXPORT __export
-#  else /* newer compiler */
-#    define PNG_DLL_EXPORT __declspec(dllexport)
-#    ifndef PNG_DLL_IMPORT
-#      define PNG_DLL_IMPORT __declspec(dllimport)
-#    endif
-#  endif /* compiler */
+#  define PNG_DLL_EXPORT __declspec(dllexport)
+#  ifndef PNG_DLL_IMPORT
+#    define PNG_DLL_IMPORT __declspec(dllimport)
+#  endif
 
 #else /* !Windows */
 #  if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
@@ -479,7 +467,7 @@
 #if CHAR_BIT == 8 && UCHAR_MAX == 255
    typedef unsigned char png_byte;
 #else
-#  error "libpng requires 8-bit bytes"
+#  error libpng requires 8-bit bytes
 #endif
 
 #if INT_MIN == -32768 && INT_MAX == 32767
@@ -487,7 +475,7 @@
 #elif SHRT_MIN == -32768 && SHRT_MAX == 32767
    typedef short png_int_16;
 #else
-#  error "libpng requires a signed 16-bit type"
+#  error libpng requires a signed 16-bit integer type
 #endif
 
 #if UINT_MAX == 65535
@@ -495,7 +483,7 @@
 #elif USHRT_MAX == 65535
    typedef unsigned short png_uint_16;
 #else
-#  error "libpng requires an unsigned 16-bit type"
+#  error libpng requires an unsigned 16-bit integer type
 #endif
 
 #if INT_MIN < -2147483646 && INT_MAX > 2147483646
@@ -503,7 +491,7 @@
 #elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646
    typedef long int png_int_32;
 #else
-#  error "libpng requires a signed 32-bit (or more) type"
+#  error libpng requires a signed 32-bit (or longer) integer type
 #endif
 
 #if UINT_MAX > 4294967294U
@@ -511,7 +499,7 @@
 #elif ULONG_MAX > 4294967294U
    typedef unsigned long int png_uint_32;
 #else
-#  error "libpng requires an unsigned 32-bit (or more) type"
+#  error libpng requires an unsigned 32-bit (or longer) integer type
 #endif
 
 /* Prior to 1.6.0, it was possible to disable the use of size_t and ptrdiff_t.
@@ -592,10 +580,6 @@
 typedef size_t                * png_size_tp;
 typedef const size_t          * png_const_size_tp;
 
-#ifdef PNG_STDIO_SUPPORTED
-typedef FILE            * png_FILE_p;
-#endif
-
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 typedef double       * png_doublep;
 typedef const double * png_const_doublep;
@@ -617,6 +601,15 @@
 /* Pointers to pointers to pointers; i.e., pointer to array */
 typedef char            * * * png_charppp;
 
+#ifdef PNG_STDIO_SUPPORTED
+/* With PNG_STDIO_SUPPORTED it was possible to use I/O streams that were
+ * not necessarily stdio FILE streams, to allow building Windows applications
+ * before Win32 and Windows CE applications before WinCE 3.0, but that kind
+ * of support has long been discontinued.
+ */
+typedef FILE            * png_FILE_p; /* [Deprecated] */
+#endif
+
 #endif /* PNG_BUILDING_SYMBOL_TABLE */
 
 #endif /* PNGCONF_H */

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngdebug.h
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngdebug.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngdebug.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
-/* pngdebug.h - Debugging macros for libpng, also used in pngtest.c
+/* pngdebug.h - internal debugging macros for libpng
  *
- * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2013 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -10,6 +10,10 @@
  * and license in png.h
  */
 
+#ifndef PNGPRIV_H
+#  error This file must not be included by applications; please include <png.h>
+#endif
+
 /* Define PNG_DEBUG at compile time for debugging information.  Higher
  * numbers for PNG_DEBUG mean more debugging information.  This has
  * only been added since version 0.95 so it is not implemented throughout

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngerror.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngerror.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngerror.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -935,23 +935,37 @@
 int /* PRIVATE */
 png_safe_execute(png_imagep image, int (*function)(png_voidp), png_voidp arg)
 {
-   png_voidp saved_error_buf = image->opaque->error_buf;
+   const png_voidp saved_error_buf = image->opaque->error_buf;
    jmp_buf safe_jmpbuf;
-   int result;
 
    /* Safely execute function(arg), with png_error returning back here. */
    if (setjmp(safe_jmpbuf) == 0)
    {
+      int result;
+
       image->opaque->error_buf = safe_jmpbuf;
       result = function(arg);
       image->opaque->error_buf = saved_error_buf;
-      return result;
+
+      if (result)
+         return 1; /* success */
    }
 
-   /* On png_error, return via longjmp, pop the jmpbuf, and free the image. */
+   /* The function failed either because of a caught png_error and a regular
+    * return of false above or because of an uncaught png_error from the
+    * function itself.  Ensure that the error_buf is always set back to the
+    * value saved above:
+    */
    image->opaque->error_buf = saved_error_buf;
-   png_image_free(image);
-   return 0;
+
+   /* On the final false return, when about to return control to the caller, the
+    * image is freed (png_image_free does this check but it is duplicated here
+    * for clarity:
+    */
+   if (saved_error_buf == NULL)
+      png_image_free(image);
+
+   return 0; /* failure */
 }
 #endif /* SIMPLIFIED READ || SIMPLIFIED_WRITE */
 #endif /* READ || WRITE */

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngget.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngget.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngget.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pngget.c - retrieval of values from info struct
  *
- * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -380,7 +380,13 @@
     * Notice that this can overflow - a warning is output and 0 is
     * returned.
     */
-   return png_muldiv_warn(png_ptr, microns, 500, 127);
+   png_fixed_point result;
+
+   if (png_muldiv(&result, microns, 500, 127) != 0)
+      return result;
+
+   png_warning(png_ptr, "fixed point overflow ignored");
+   return 0;
 }
 
 png_fixed_point PNGAPI
@@ -390,7 +396,7 @@
    return png_fixed_inches_from_microns(png_ptr,
        png_get_x_offset_microns(png_ptr, info_ptr));
 }
-#endif
+#endif /* FIXED_POINT */
 
 #ifdef PNG_FIXED_POINT_SUPPORTED
 png_fixed_point PNGAPI
@@ -518,44 +524,31 @@
 #  ifdef PNG_FLOATING_POINT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr,
-    double *white_x, double *white_y, double *red_x, double *red_y,
-    double *green_x, double *green_y, double *blue_x, double *blue_y)
+    double *whitex, double *whitey, double *redx, double *redy,
+    double *greenx, double *greeny, double *bluex, double *bluey)
 {
    png_debug1(1, "in %s retrieval function", "cHRM");
 
-   /* Quiet API change: this code used to only return the end points if a cHRM
-    * chunk was present, but the end points can also come from iCCP or sRGB
-    * chunks, so in 1.6.0 the png_get_ APIs return the end points regardless and
-    * the png_set_ APIs merely check that set end points are mutually
-    * consistent.
-    */
+   /* PNGv3: this just returns the values store from the cHRM, if any. */
    if (png_ptr != NULL && info_ptr != NULL &&
-      (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
+       (info_ptr->valid & PNG_INFO_cHRM) != 0)
    {
-      if (white_x != NULL)
-         *white_x = png_float(png_ptr,
-             info_ptr->colorspace.end_points_xy.whitex, "cHRM white X");
-      if (white_y != NULL)
-         *white_y = png_float(png_ptr,
-             info_ptr->colorspace.end_points_xy.whitey, "cHRM white Y");
-      if (red_x != NULL)
-         *red_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redx,
-             "cHRM red X");
-      if (red_y != NULL)
-         *red_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redy,
-             "cHRM red Y");
-      if (green_x != NULL)
-         *green_x = png_float(png_ptr,
-             info_ptr->colorspace.end_points_xy.greenx, "cHRM green X");
-      if (green_y != NULL)
-         *green_y = png_float(png_ptr,
-             info_ptr->colorspace.end_points_xy.greeny, "cHRM green Y");
-      if (blue_x != NULL)
-         *blue_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluex,
-             "cHRM blue X");
-      if (blue_y != NULL)
-         *blue_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluey,
-             "cHRM blue Y");
+      if (whitex != NULL)
+         *whitex = png_float(png_ptr, info_ptr->cHRM.whitex, "cHRM wx");
+      if (whitey != NULL)
+         *whitey = png_float(png_ptr, info_ptr->cHRM.whitey, "cHRM wy");
+      if (redx   != NULL)
+         *redx   = png_float(png_ptr, info_ptr->cHRM.redx,   "cHRM rx");
+      if (redy   != NULL)
+         *redy   = png_float(png_ptr, info_ptr->cHRM.redy,   "cHRM ry");
+      if (greenx != NULL)
+         *greenx = png_float(png_ptr, info_ptr->cHRM.greenx, "cHRM gx");
+      if (greeny != NULL)
+         *greeny = png_float(png_ptr, info_ptr->cHRM.greeny, "cHRM gy");
+      if (bluex  != NULL)
+         *bluex  = png_float(png_ptr, info_ptr->cHRM.bluex,  "cHRM bx");
+      if (bluey  != NULL)
+         *bluey  = png_float(png_ptr, info_ptr->cHRM.bluey,  "cHRM by");
       return PNG_INFO_cHRM;
    }
 
@@ -568,38 +561,31 @@
     double *green_Y, double *green_Z, double *blue_X, double *blue_Y,
     double *blue_Z)
 {
+   png_XYZ XYZ;
    png_debug1(1, "in %s retrieval function", "cHRM_XYZ(float)");
 
    if (png_ptr != NULL && info_ptr != NULL &&
-       (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
+       (info_ptr->valid & PNG_INFO_cHRM) != 0 &&
+       png_XYZ_from_xy(&XYZ, &info_ptr->cHRM) == 0)
    {
       if (red_X != NULL)
-         *red_X = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_X,
-             "cHRM red X");
+         *red_X = png_float(png_ptr, XYZ.red_X, "cHRM red X");
       if (red_Y != NULL)
-         *red_Y = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Y,
-             "cHRM red Y");
+         *red_Y = png_float(png_ptr, XYZ.red_Y, "cHRM red Y");
       if (red_Z != NULL)
-         *red_Z = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Z,
-             "cHRM red Z");
+         *red_Z = png_float(png_ptr, XYZ.red_Z, "cHRM red Z");
       if (green_X != NULL)
-         *green_X = png_float(png_ptr,
-             info_ptr->colorspace.end_points_XYZ.green_X, "cHRM green X");
+         *green_X = png_float(png_ptr, XYZ.green_X, "cHRM green X");
       if (green_Y != NULL)
-         *green_Y = png_float(png_ptr,
-             info_ptr->colorspace.end_points_XYZ.green_Y, "cHRM green Y");
+         *green_Y = png_float(png_ptr, XYZ.green_Y, "cHRM green Y");
       if (green_Z != NULL)
-         *green_Z = png_float(png_ptr,
-             info_ptr->colorspace.end_points_XYZ.green_Z, "cHRM green Z");
+         *green_Z = png_float(png_ptr, XYZ.green_Z, "cHRM green Z");
       if (blue_X != NULL)
-         *blue_X = png_float(png_ptr,
-             info_ptr->colorspace.end_points_XYZ.blue_X, "cHRM blue X");
+         *blue_X = png_float(png_ptr, XYZ.blue_X, "cHRM blue X");
       if (blue_Y != NULL)
-         *blue_Y = png_float(png_ptr,
-             info_ptr->colorspace.end_points_XYZ.blue_Y, "cHRM blue Y");
+         *blue_Y = png_float(png_ptr, XYZ.blue_Y, "cHRM blue Y");
       if (blue_Z != NULL)
-         *blue_Z = png_float(png_ptr,
-             info_ptr->colorspace.end_points_XYZ.blue_Z, "cHRM blue Z");
+         *blue_Z = png_float(png_ptr, XYZ.blue_Z, "cHRM blue Z");
       return PNG_INFO_cHRM;
    }
 
@@ -616,29 +602,22 @@
     png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
     png_fixed_point *int_blue_Z)
 {
+   png_XYZ XYZ;
    png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
 
    if (png_ptr != NULL && info_ptr != NULL &&
-      (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
+       (info_ptr->valid & PNG_INFO_cHRM) != 0U &&
+       png_XYZ_from_xy(&XYZ, &info_ptr->cHRM) == 0)
    {
-      if (int_red_X != NULL)
-         *int_red_X = info_ptr->colorspace.end_points_XYZ.red_X;
-      if (int_red_Y != NULL)
-         *int_red_Y = info_ptr->colorspace.end_points_XYZ.red_Y;
-      if (int_red_Z != NULL)
-         *int_red_Z = info_ptr->colorspace.end_points_XYZ.red_Z;
-      if (int_green_X != NULL)
-         *int_green_X = info_ptr->colorspace.end_points_XYZ.green_X;
-      if (int_green_Y != NULL)
-         *int_green_Y = info_ptr->colorspace.end_points_XYZ.green_Y;
-      if (int_green_Z != NULL)
-         *int_green_Z = info_ptr->colorspace.end_points_XYZ.green_Z;
-      if (int_blue_X != NULL)
-         *int_blue_X = info_ptr->colorspace.end_points_XYZ.blue_X;
-      if (int_blue_Y != NULL)
-         *int_blue_Y = info_ptr->colorspace.end_points_XYZ.blue_Y;
-      if (int_blue_Z != NULL)
-         *int_blue_Z = info_ptr->colorspace.end_points_XYZ.blue_Z;
+      if (int_red_X != NULL) *int_red_X = XYZ.red_X;
+      if (int_red_Y != NULL) *int_red_Y = XYZ.red_Y;
+      if (int_red_Z != NULL) *int_red_Z = XYZ.red_Z;
+      if (int_green_X != NULL) *int_green_X = XYZ.green_X;
+      if (int_green_Y != NULL) *int_green_Y = XYZ.green_Y;
+      if (int_green_Z != NULL) *int_green_Z = XYZ.green_Z;
+      if (int_blue_X != NULL) *int_blue_X = XYZ.blue_X;
+      if (int_blue_Y != NULL) *int_blue_Y = XYZ.blue_Y;
+      if (int_blue_Z != NULL) *int_blue_Z = XYZ.blue_Z;
       return PNG_INFO_cHRM;
    }
 
@@ -647,31 +626,24 @@
 
 png_uint_32 PNGAPI
 png_get_cHRM_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
-    png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x,
-    png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
-    png_fixed_point *blue_x, png_fixed_point *blue_y)
+    png_fixed_point *whitex, png_fixed_point *whitey, png_fixed_point *redx,
+    png_fixed_point *redy, png_fixed_point *greenx, png_fixed_point *greeny,
+    png_fixed_point *bluex, png_fixed_point *bluey)
 {
    png_debug1(1, "in %s retrieval function", "cHRM");
 
+   /* PNGv3: this just returns the values store from the cHRM, if any. */
    if (png_ptr != NULL && info_ptr != NULL &&
-      (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
+       (info_ptr->valid & PNG_INFO_cHRM) != 0)
    {
-      if (white_x != NULL)
-         *white_x = info_ptr->colorspace.end_points_xy.whitex;
-      if (white_y != NULL)
-         *white_y = info_ptr->colorspace.end_points_xy.whitey;
-      if (red_x != NULL)
-         *red_x = info_ptr->colorspace.end_points_xy.redx;
-      if (red_y != NULL)
-         *red_y = info_ptr->colorspace.end_points_xy.redy;
-      if (green_x != NULL)
-         *green_x = info_ptr->colorspace.end_points_xy.greenx;
-      if (green_y != NULL)
-         *green_y = info_ptr->colorspace.end_points_xy.greeny;
-      if (blue_x != NULL)
-         *blue_x = info_ptr->colorspace.end_points_xy.bluex;
-      if (blue_y != NULL)
-         *blue_y = info_ptr->colorspace.end_points_xy.bluey;
+      if (whitex != NULL) *whitex = info_ptr->cHRM.whitex;
+      if (whitey != NULL) *whitey = info_ptr->cHRM.whitey;
+      if (redx   != NULL) *redx   = info_ptr->cHRM.redx;
+      if (redy   != NULL) *redy   = info_ptr->cHRM.redy;
+      if (greenx != NULL) *greenx = info_ptr->cHRM.greenx;
+      if (greeny != NULL) *greeny = info_ptr->cHRM.greeny;
+      if (bluex  != NULL) *bluex  = info_ptr->cHRM.bluex;
+      if (bluey  != NULL) *bluey  = info_ptr->cHRM.bluey;
       return PNG_INFO_cHRM;
    }
 
@@ -688,11 +660,11 @@
 {
    png_debug1(1, "in %s retrieval function", "gAMA");
 
+   /* PNGv3 compatibility: only report gAMA if it is really present. */
    if (png_ptr != NULL && info_ptr != NULL &&
-       (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
-       file_gamma != NULL)
+       (info_ptr->valid & PNG_INFO_gAMA) != 0)
    {
-      *file_gamma = info_ptr->colorspace.gamma;
+      if (file_gamma != NULL) *file_gamma = info_ptr->gamma;
       return PNG_INFO_gAMA;
    }
 
@@ -707,12 +679,13 @@
 {
    png_debug1(1, "in %s retrieval function", "gAMA(float)");
 
+   /* PNGv3 compatibility: only report gAMA if it is really present. */
    if (png_ptr != NULL && info_ptr != NULL &&
-      (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
-      file_gamma != NULL)
+       (info_ptr->valid & PNG_INFO_gAMA) != 0)
    {
-      *file_gamma = png_float(png_ptr, info_ptr->colorspace.gamma,
-          "png_get_gAMA");
+      if (file_gamma != NULL)
+         *file_gamma = png_float(png_ptr, info_ptr->gamma, "gAMA");
+
       return PNG_INFO_gAMA;
    }
 
@@ -729,9 +702,10 @@
    png_debug1(1, "in %s retrieval function", "sRGB");
 
    if (png_ptr != NULL && info_ptr != NULL &&
-      (info_ptr->valid & PNG_INFO_sRGB) != 0 && file_srgb_intent != NULL)
+      (info_ptr->valid & PNG_INFO_sRGB) != 0)
    {
-      *file_srgb_intent = info_ptr->colorspace.rendering_intent;
+      if (file_srgb_intent != NULL)
+         *file_srgb_intent = info_ptr->rendering_intent;
       return PNG_INFO_sRGB;
    }
 

Modified: branches/stable/source/src/libs/libpng/libpng-src/pnginfo.h
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pnginfo.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pnginfo.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
-/* pnginfo.h - header file for PNG reference library
+/* pnginfo.h - internal structures for libpng
  *
- * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2013,2018 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -10,43 +10,20 @@
  * and license in png.h
  */
 
- /* png_info is a structure that holds the information in a PNG file so
- * that the application can find out the characteristics of the image.
- * If you are reading the file, this structure will tell you what is
- * in the PNG file.  If you are writing the file, fill in the information
- * you want to put into the PNG file, using png_set_*() functions, then
- * call png_write_info().
+#ifndef PNGPRIV_H
+#  error This file must not be included by applications; please include <png.h>
+#endif
+
+/* INTERNAL, PRIVATE definition of a PNG.
  *
- * The names chosen should be very close to the PNG specification, so
- * consult that document for information about the meaning of each field.
+ * png_info is a modifiable description of a PNG datastream.  The fields inside
+ * this structure are accessed through png_get_<CHUNK>() functions and modified
+ * using png_set_<CHUNK>() functions.
  *
- * With libpng < 0.95, it was only possible to directly set and read the
- * the values in the png_info_struct, which meant that the contents and
- * order of the values had to remain fixed.  With libpng 0.95 and later,
- * however, there are now functions that abstract the contents of
- * png_info_struct from the application, so this makes it easier to use
- * libpng with dynamic libraries, and even makes it possible to use
- * libraries that don't have all of the libpng ancillary chunk-handing
- * functionality.  In libpng-1.5.0 this was moved into a separate private
- * file that is not visible to applications.
- *
- * The following members may have allocated storage attached that should be
- * cleaned up before the structure is discarded: palette, trans, text,
- * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile,
- * splt_palettes, scal_unit, row_pointers, and unknowns.   By default, these
- * are automatically freed when the info structure is deallocated, if they were
- * allocated internally by libpng.  This behavior can be changed by means
- * of the png_data_freer() function.
- *
- * More allocation details: all the chunk-reading functions that
- * change these members go through the corresponding png_set_*
- * functions.  A function to clear these members is available: see
- * png_free_data().  The png_set_* functions do not depend on being
- * able to point info structure members to any of the storage they are
- * passed (they make their own copies), EXCEPT that the png_set_text
- * functions use the same storage passed to them in the text_ptr or
- * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns
- * functions do not make their own copies.
+ * Some functions in libpng do directly access members of png_info.  However,
+ * this should be avoided.  png_struct objects contain members which hold
+ * caches, sometimes optimised, of the values from png_info objects, and
+ * png_info is not passed to the functions which read and write image data.
  */
 #ifndef PNGINFO_H
 #define PNGINFO_H
@@ -86,20 +63,6 @@
     * and initialize the appropriate fields below.
     */
 
-#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED)
-   /* png_colorspace only contains 'flags' if neither GAMMA or COLORSPACE are
-    * defined.  When COLORSPACE is switched on all the colorspace-defining
-    * chunks should be enabled, when GAMMA is switched on all the gamma-defining
-    * chunks should be enabled.  If this is not done it becomes possible to read
-    * inconsistent PNG files and assign a probably incorrect interpretation to
-    * the information.  (In other words, by carefully choosing which chunks to
-    * recognize the system configuration can select an interpretation for PNG
-    * files containing ambiguous data and this will result in inconsistent
-    * behavior between different libpng builds!)
-    */
-   png_colorspace colorspace;
-#endif
-
 #ifdef PNG_cICP_SUPPORTED
    /* cICP chunk data */
    png_byte cicp_colour_primaries;
@@ -211,11 +174,8 @@
 #endif
 
 #ifdef PNG_eXIf_SUPPORTED
-   int num_exif;  /* Added at libpng-1.6.31 */
+   png_uint_32 num_exif;  /* Added at libpng-1.6.31 */
    png_bytep exif;
-# ifdef PNG_READ_eXIf_SUPPORTED
-   png_bytep eXIf_buf;  /* Added at libpng-1.6.32 */
-# endif
 #endif
 
 #ifdef PNG_hIST_SUPPORTED
@@ -288,5 +248,16 @@
    png_bytepp row_pointers;        /* the image bits */
 #endif
 
+#ifdef PNG_cHRM_SUPPORTED
+   png_xy cHRM;
+#endif
+
+#ifdef PNG_gAMA_SUPPORTED
+   png_fixed_point gamma;
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+   int rendering_intent;
+#endif
 };
 #endif /* PNGINFO_H */

Modified: branches/stable/source/src/libs/libpng/libpng-src/pnglibconf.h
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pnglibconf.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pnglibconf.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pnglibconf.h - library build configuration */
 
-/* libpng version 1.6.46 */
+/* libpng version 1.6.48 */
 
 /* Copyright (c) 2018-2025 Cosmin Truta */
 /* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngmem.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngmem.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngmem.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pngmem.c - stub functions for memory allocation
  *
- * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2014,2016 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -72,30 +72,29 @@
     * to implement a user memory handler.  This checks to be sure it isn't
     * called with big numbers.
     */
-#ifndef PNG_USER_MEM_SUPPORTED
-   PNG_UNUSED(png_ptr)
-#endif
+#  ifdef PNG_MAX_MALLOC_64K
+      /* This is support for legacy systems which had segmented addressing
+       * limiting the maximum allocation size to 65536.  It takes precedence
+       * over PNG_SIZE_MAX which is set to 65535 on true 16-bit systems.
+       *
+       * TODO: libpng-1.8: finally remove both cases.
+       */
+      if (size > 65536U) return NULL;
+#  endif
 
-   /* Some compilers complain that this is always true.  However, it
-    * can be false when integer overflow happens.
+   /* This is checked too because the system malloc call below takes a (size_t).
     */
-   if (size > 0 && size <= PNG_SIZE_MAX
-#     ifdef PNG_MAX_MALLOC_64K
-         && size <= 65536U
-#     endif
-      )
-   {
-#ifdef PNG_USER_MEM_SUPPORTED
+   if (size > PNG_SIZE_MAX) return NULL;
+
+#  ifdef PNG_USER_MEM_SUPPORTED
       if (png_ptr != NULL && png_ptr->malloc_fn != NULL)
          return png_ptr->malloc_fn(png_constcast(png_structrp,png_ptr), size);
+#  else
+      PNG_UNUSED(png_ptr)
+#  endif
 
-      else
-#endif
-         return malloc((size_t)size); /* checked for truncation above */
-   }
-
-   else
-      return NULL;
+   /* Use the system malloc */
+   return malloc((size_t)/*SAFE*/size); /* checked for truncation above */
 }
 
 #if defined(PNG_TEXT_SUPPORTED) || defined(PNG_sPLT_SUPPORTED) ||\

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngpread.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngpread.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngpread.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pngpread.c - read a png file in push mode
  *
- * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -193,17 +193,8 @@
     */
    if ((png_ptr->mode & PNG_HAVE_CHUNK_HEADER) == 0)
    {
-      png_byte chunk_length[4];
-      png_byte chunk_tag[4];
-
       PNG_PUSH_SAVE_BUFFER_IF_LT(8)
-      png_push_fill_buffer(png_ptr, chunk_length, 4);
-      png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length);
-      png_reset_crc(png_ptr);
-      png_crc_read(png_ptr, chunk_tag, 4);
-      png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag);
-      png_check_chunk_name(png_ptr, png_ptr->chunk_name);
-      png_check_chunk_length(png_ptr, png_ptr->push_length);
+      png_ptr->push_length = png_read_chunk_header(png_ptr);
       png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
    }
 
@@ -244,13 +235,13 @@
          png_error(png_ptr, "Invalid IHDR length");
 
       PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_IHDR(png_ptr, info_ptr, png_ptr->push_length);
+      png_handle_chunk(png_ptr, info_ptr, png_ptr->push_length);
    }
 
    else if (chunk_name == png_IEND)
    {
       PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_IEND(png_ptr, info_ptr, png_ptr->push_length);
+      png_handle_chunk(png_ptr, info_ptr, png_ptr->push_length);
 
       png_ptr->process_mode = PNG_READ_DONE_MODE;
       png_push_have_end(png_ptr, info_ptr);
@@ -267,12 +258,6 @@
    }
 #endif
 
-   else if (chunk_name == png_PLTE)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_PLTE(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
    else if (chunk_name == png_IDAT)
    {
       png_ptr->idat_size = png_ptr->push_length;
@@ -285,179 +270,10 @@
       return;
    }
 
-#ifdef PNG_READ_gAMA_SUPPORTED
-   else if (png_ptr->chunk_name == png_gAMA)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_gAMA(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_sBIT_SUPPORTED
-   else if (png_ptr->chunk_name == png_sBIT)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_sBIT(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_cHRM_SUPPORTED
-   else if (png_ptr->chunk_name == png_cHRM)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_cHRM(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_cICP_SUPPORTED
-   else if (png_ptr->chunk_name == png_cICP)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_cICP(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_cLLI_SUPPORTED
-   else if (png_ptr->chunk_name == png_cLLI)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_cLLI(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_mDCV_SUPPORTED
-   else if (png_ptr->chunk_name == png_mDCV)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_mDCV(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_eXIf_SUPPORTED
-   else if (png_ptr->chunk_name == png_eXIf)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_eXIf(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_sRGB_SUPPORTED
-   else if (chunk_name == png_sRGB)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_sRGB(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_iCCP_SUPPORTED
-   else if (png_ptr->chunk_name == png_iCCP)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_iCCP(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_sPLT_SUPPORTED
-   else if (chunk_name == png_sPLT)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_sPLT(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_tRNS_SUPPORTED
-   else if (chunk_name == png_tRNS)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_tRNS(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_bKGD_SUPPORTED
-   else if (chunk_name == png_bKGD)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_bKGD(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_hIST_SUPPORTED
-   else if (chunk_name == png_hIST)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_hIST(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_pHYs_SUPPORTED
-   else if (chunk_name == png_pHYs)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_pHYs(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_oFFs_SUPPORTED
-   else if (chunk_name == png_oFFs)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_oFFs(png_ptr, info_ptr, png_ptr->push_length);
-   }
-#endif
-
-#ifdef PNG_READ_pCAL_SUPPORTED
-   else if (chunk_name == png_pCAL)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_pCAL(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_sCAL_SUPPORTED
-   else if (chunk_name == png_sCAL)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_sCAL(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_tIME_SUPPORTED
-   else if (chunk_name == png_tIME)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_tIME(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_tEXt_SUPPORTED
-   else if (chunk_name == png_tEXt)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_zTXt_SUPPORTED
-   else if (chunk_name == png_zTXt)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length);
-   }
-
-#endif
-#ifdef PNG_READ_iTXt_SUPPORTED
-   else if (chunk_name == png_iTXt)
-   {
-      PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length);
-   }
-#endif
-
    else
    {
       PNG_PUSH_SAVE_BUFFER_IF_FULL
-      png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length,
-          PNG_HANDLE_CHUNK_AS_DEFAULT);
+      png_handle_chunk(png_ptr, info_ptr, png_ptr->push_length);
    }
 
    png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngpriv.h
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngpriv.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngpriv.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pngpriv.h - private declarations for use inside libpng
  *
- * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -19,9 +19,21 @@
  * they should be well aware of the issues that may arise from doing so.
  */
 
+
+/* pngpriv.h must be included first in each translation unit inside libpng.
+ * On the other hand, it must not be included at all, directly or indirectly,
+ * by any application code that uses the libpng API.
+ */
 #ifndef PNGPRIV_H
-#define PNGPRIV_H
+#  define PNGPRIV_H
+#else
+#  error Duplicate inclusion of pngpriv.h; please check the libpng source files
+#endif
 
+#if defined(PNG_H) || defined(PNGCONF_H) || defined(PNGLCONF_H)
+#  error This file must not be included by applications; please include <png.h>
+#endif
+
 /* Feature Test Macros.  The following are defined here to ensure that correctly
  * implemented libraries reveal the APIs libpng needs to build and hide those
  * that are not needed and potentially damaging to the compilation.
@@ -57,7 +69,6 @@
  */
 #if defined(HAVE_CONFIG_H) && !defined(PNG_NO_CONFIG_H)
 #  include <config.h>
-
    /* Pick up the definition of 'restrict' from config.h if it was read: */
 #  define PNG_RESTRICT restrict
 #endif
@@ -67,9 +78,7 @@
  * are not internal definitions may be required.  This is handled below just
  * before png.h is included, but load the configuration now if it is available.
  */
-#ifndef PNGLCONF_H
-#  include "pnglibconf.h"
-#endif
+#include "pnglibconf.h"
 
 /* Local renames may change non-exported API functions from png.h */
 #if defined(PNG_PREFIX) && !defined(PNGPREFIX_H)
@@ -671,7 +680,7 @@
 #define PNG_FLAG_CRC_ANCILLARY_NOWARN     0x0200U
 #define PNG_FLAG_CRC_CRITICAL_USE         0x0400U
 #define PNG_FLAG_CRC_CRITICAL_IGNORE      0x0800U
-#define PNG_FLAG_ASSUME_sRGB              0x1000U /* Added to libpng-1.5.4 */
+/*      PNG_FLAG_ASSUME_sRGB unused       0x1000U  * Added to libpng-1.5.4 */
 #define PNG_FLAG_OPTIMIZE_ALPHA           0x2000U /* Added to libpng-1.5.4 */
 #define PNG_FLAG_DETECT_UNINITIALIZED     0x4000U /* Added to libpng-1.5.4 */
 /* #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS      0x8000U */
@@ -802,11 +811,31 @@
  *
  * PNG_32b correctly produces a value shifted by up to 24 bits, even on
  * architectures where (int) is only 16 bits.
+ *
+ * 1.6.47: PNG_32b was made into a preprocessor evaluable macro by replacing the
+ * static_cast with a promoting binary operation using a guaranteed 32-bit
+ * (minimum) unsigned value.
  */
-#define PNG_32b(b,s) ((png_uint_32)(b) << (s))
+#define PNG_32b(b,s) (((0xFFFFFFFFU)&(b)) << (s))
 #define PNG_U32(b1,b2,b3,b4) \
    (PNG_32b(b1,24) | PNG_32b(b2,16) | PNG_32b(b3,8) | PNG_32b(b4,0))
 
+/* Chunk name validation.  When using these macros all the arguments should be
+ * constants, otherwise code bloat may well occur.  The macros are provided
+ * primarily for use in #if checks.
+ *
+ * PNG_32to8 produces a byte value with the right shift; used to extract the
+ * byte value from a chunk name.
+ */
+#define PNG_32to8(cn,s) (((cn) >> (s)) & 0xffU)
+#define PNG_CN_VALID_UPPER(b) ((b) >= 65 && (b) <= 90) /* upper-case ASCII */
+#define PNG_CN_VALID_ASCII(b) PNG_CN_VALID_UPPER((b) & ~32U)
+#define PNG_CHUNK_NAME_VALID(cn) (\
+   PNG_CN_VALID_ASCII(PNG_32to8(cn,24)) && /* critical, !ancillary */\
+   PNG_CN_VALID_ASCII(PNG_32to8(cn,16)) && /* public, !privately defined */\
+   PNG_CN_VALID_UPPER(PNG_32to8(cn, 8)) && /* VALID, !reserved */\
+   PNG_CN_VALID_ASCII(PNG_32to8(cn, 0))   /* data-dependent, !copy ok */)
+
 /* Constants for known chunk types.
  *
  * MAINTAINERS: If you need to add a chunk, define the name here.
@@ -834,11 +863,14 @@
 #define png_IEND PNG_U32( 73,  69,  78,  68)
 #define png_IHDR PNG_U32( 73,  72,  68,  82)
 #define png_PLTE PNG_U32( 80,  76,  84,  69)
+#define png_acTL PNG_U32( 97,  99,  84,  76) /* PNGv3: APNG */
 #define png_bKGD PNG_U32( 98,  75,  71,  68)
 #define png_cHRM PNG_U32( 99,  72,  82,  77)
 #define png_cICP PNG_U32( 99,  73,  67,  80) /* PNGv3 */
 #define png_cLLI PNG_U32( 99,  76,  76,  73) /* PNGv3 */
 #define png_eXIf PNG_U32(101,  88,  73, 102) /* registered July 2017 */
+#define png_fcTL PNG_U32(102,  99,  84,  76) /* PNGv3: APNG */
+#define png_fdAT PNG_U32(102, 100,  65,  84) /* PNGv3: APNG */
 #define png_fRAc PNG_U32(102,  82,  65,  99) /* registered, not defined */
 #define png_gAMA PNG_U32(103,  65,  77,  65)
 #define png_gIFg PNG_U32(103,  73,  70, 103)
@@ -888,11 +920,74 @@
 #define PNG_CHUNK_RESERVED(c)     (1 & ((c) >> 13))
 #define PNG_CHUNK_SAFE_TO_COPY(c) (1 & ((c) >>  5))
 
+/* Known chunks.  All supported chunks must be listed here.  The macro PNG_CHUNK
+ * contains the four character ASCII name by which the chunk is identified.  The
+ * macro is implemented as required to build tables or switch statements which
+ * require entries for every known chunk.  The macro also contains an index
+ * value which should be in order (this is checked in png.c).
+ *
+ * Notice that "known" does not require "SUPPORTED"; tables should be built in
+ * such a way that chunks unsupported in a build require no more than the table
+ * entry (which should be small.)  In particular function pointers for
+ * unsupported chunks should be NULL.
+ *
+ * At present these index values are not exported (not part of the public API)
+ * so can be changed at will.  For convenience the names are in lexical sort
+ * order but with the critical chunks at the start in the order of occurence in
+ * a PNG.
+ *
+ * PNG_INFO_ values do not exist for every one of these chunk handles; for
+ * example PNG_INFO_{IDAT,IEND,tEXt,iTXt,zTXt} and possibly other chunks in the
+ * future.
+ */
+#define PNG_KNOWN_CHUNKS\
+   PNG_CHUNK(IHDR,  0)\
+   PNG_CHUNK(PLTE,  1)\
+   PNG_CHUNK(IDAT,  2)\
+   PNG_CHUNK(IEND,  3)\
+   PNG_CHUNK(acTL,  4)\
+   PNG_CHUNK(bKGD,  5)\
+   PNG_CHUNK(cHRM,  6)\
+   PNG_CHUNK(cICP,  7)\
+   PNG_CHUNK(cLLI,  8)\
+   PNG_CHUNK(eXIf,  9)\
+   PNG_CHUNK(fcTL, 10)\
+   PNG_CHUNK(fdAT, 11)\
+   PNG_CHUNK(gAMA, 12)\
+   PNG_CHUNK(hIST, 13)\
+   PNG_CHUNK(iCCP, 14)\
+   PNG_CHUNK(iTXt, 15)\
+   PNG_CHUNK(mDCV, 16)\
+   PNG_CHUNK(oFFs, 17)\
+   PNG_CHUNK(pCAL, 18)\
+   PNG_CHUNK(pHYs, 19)\
+   PNG_CHUNK(sBIT, 20)\
+   PNG_CHUNK(sCAL, 21)\
+   PNG_CHUNK(sPLT, 22)\
+   PNG_CHUNK(sRGB, 23)\
+   PNG_CHUNK(tEXt, 24)\
+   PNG_CHUNK(tIME, 25)\
+   PNG_CHUNK(tRNS, 26)\
+   PNG_CHUNK(zTXt, 27)
+
 /* Gamma values (new at libpng-1.5.4): */
 #define PNG_GAMMA_MAC_OLD 151724  /* Assume '1.8' is really 2.2/1.45! */
 #define PNG_GAMMA_MAC_INVERSE 65909
 #define PNG_GAMMA_sRGB_INVERSE 45455
 
+/* gamma sanity check.  libpng cannot implement gamma transforms outside a
+ * certain limit because of its use of 16-bit fixed point intermediate values.
+ * Gamma values that are too large or too small will zap the 16-bit values all
+ * to 0 or 65535 resulting in an obvious 'bad' image.
+ *
+ * In libpng 1.6.0 the limits were changed from 0.07..3 to 0.01..100 to
+ * accommodate the optimal 16-bit gamma of 36 and its reciprocal.
+ *
+ * These are png_fixed_point integral values:
+ */
+#define PNG_LIB_GAMMA_MIN 1000
+#define PNG_LIB_GAMMA_MAX 10000000
+
 /* Almost everything below is C specific; the #defines above can be used in
  * non-C code (so long as it is C-preprocessed) the rest of this stuff cannot.
  */
@@ -905,17 +1000,15 @@
  * must match that used in the build, or we must be using pnglibconf.h.prebuilt:
  */
 #if PNG_ZLIB_VERNUM != 0 && PNG_ZLIB_VERNUM != ZLIB_VERNUM
-#  error ZLIB_VERNUM != PNG_ZLIB_VERNUM \
-      "-I (include path) error: see the notes in pngpriv.h"
-   /* This means that when pnglibconf.h was built the copy of zlib.h that it
-    * used is not the same as the one being used here.  Because the build of
-    * libpng makes decisions to use inflateInit2 and inflateReset2 based on the
-    * zlib version number and because this affects handling of certain broken
-    * PNG files the -I directives must match.
+#  error The include path of <zlib.h> is incorrect
+   /* When pnglibconf.h was built, the copy of zlib.h that it used was not the
+    * same as the one being used here.  Considering how libpng makes decisions
+    * to use the zlib API based on the zlib version number, the -I options must
+    * match.
     *
-    * The most likely explanation is that you passed a -I in CFLAGS. This will
-    * not work; all the preprocessor directives and in particular all the -I
-    * directives must be in CPPFLAGS.
+    * A possible cause of this mismatch is that you passed an -I option in
+    * CFLAGS, which is unlikely to work.  All the preprocessor options, and all
+    * the -I options in particular, should be in CPPFLAGS.
     */
 #endif
 
@@ -956,7 +1049,6 @@
  *
  * All of these functions must be declared with PNG_INTERNAL_FUNCTION.
  */
-
 /* Zlib support */
 #define PNG_UNEXPECTED_ZLIB_RETURN (-7)
 PNG_INTERNAL_FUNCTION(void, png_zstream_error,(png_structrp png_ptr, int ret),
@@ -996,6 +1088,25 @@
 PNG_INTERNAL_FUNCTION(int,png_user_version_check,(png_structrp png_ptr,
    png_const_charp user_png_ver),PNG_EMPTY);
 
+#ifdef PNG_READ_SUPPORTED /* should only be used on read */
+/* Security: read limits on the largest allocations while reading a PNG.  This
+ * avoids very large allocations caused by PNG files with damaged or altered
+ * chunk 'length' fields.
+ */
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED /* run-time limit */
+#  define png_chunk_max(png_ptr) ((png_ptr)->user_chunk_malloc_max)
+
+#elif PNG_USER_CHUNK_MALLOC_MAX > 0 /* compile-time limit */
+#  define png_chunk_max(png_ptr) ((void)png_ptr, PNG_USER_CHUNK_MALLOC_MAX)
+
+#elif (defined PNG_MAX_MALLOC_64K)  /* legacy system limit */
+#  define png_chunk_max(png_ptr) ((void)png_ptr, 65536U)
+
+#else                               /* modern system limit SIZE_MAX (C99) */
+#  define png_chunk_max(png_ptr) ((void)png_ptr, PNG_SIZE_MAX)
+#endif
+#endif /* READ */
+
 /* Internal base allocator - no messages, NULL on failure to allocate.  This
  * does, however, call the application provided allocator and that could call
  * png_error (although that would be a bug in the application implementation.)
@@ -1095,9 +1206,6 @@
 PNG_INTERNAL_FUNCTION(int,png_crc_finish,(png_structrp png_ptr,
    png_uint_32 skip),PNG_EMPTY);
 
-/* Read the CRC from the file and compare it to the libpng calculated CRC */
-PNG_INTERNAL_FUNCTION(int,png_crc_error,(png_structrp png_ptr),PNG_EMPTY);
-
 /* Calculate the CRC over a section of data.  Note that we are only
  * passing a maximum of 64K on systems that have this as a memory limit,
  * since this is the maximum buffer size we can specify.
@@ -1175,10 +1283,10 @@
 
 #ifdef PNG_WRITE_iCCP_SUPPORTED
 PNG_INTERNAL_FUNCTION(void,png_write_iCCP,(png_structrp png_ptr,
-   png_const_charp name, png_const_bytep profile), PNG_EMPTY);
-   /* The profile must have been previously validated for correctness, the
-    * length comes from the first four bytes.  Only the base, deflate,
-    * compression is supported.
+   png_const_charp name, png_const_bytep profile, png_uint_32 proflen),
+   PNG_EMPTY);
+   /* Writes a previously 'set' profile.  The profile argument is **not**
+    * compressed.
     */
 #endif
 
@@ -1487,128 +1595,24 @@
 /* The following decodes the appropriate chunks, and does error correction,
  * then calls the appropriate callback for the chunk if it is valid.
  */
+typedef enum
+{
+   /* Result of a call to png_handle_chunk made to handle the current chunk
+    * png_struct::chunk_name on read.  Always informational, either the stream
+    * is read for the next chunk or the routine will call png_error.
+    *
+    * NOTE: order is important internally.  handled_saved and above are regarded
+    * as handling the chunk.
+    */
+   handled_error = 0,  /* bad crc or known and bad format or too long */
+   handled_discarded,  /* not saved in the unknown chunk list */
+   handled_saved,      /* saved in the unknown chunk list */
+   handled_ok          /* known, supported and handled without error */
+} png_handle_result_code;
 
-/* Decode the IHDR chunk */
-PNG_INTERNAL_FUNCTION(void,png_handle_IHDR,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_handle_PLTE,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_handle_IEND,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-
-#ifdef PNG_READ_bKGD_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_bKGD,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_cHRM_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_cHRM,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_cICP_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_cICP,(png_structrp png_ptr,
-        png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_cLLI_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_cLLI,(png_structrp png_ptr,
-        png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_eXIf_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_eXIf,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_gAMA_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_gAMA,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_hIST_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_hIST,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_iCCP_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_iCCP,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif /* READ_iCCP */
-
-#ifdef PNG_READ_iTXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_iTXt,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_mDCV_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_mDCV,(png_structrp png_ptr,
-        png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_oFFs_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_oFFs,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_pCAL_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_pCAL,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_pHYs_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_pHYs,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_sBIT_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_sBIT,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_sCAL_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_sCAL,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_sPLT_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_sPLT,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif /* READ_sPLT */
-
-#ifdef PNG_READ_sRGB_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_sRGB,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_tEXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_tEXt,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_tIME_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_tIME,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_tRNS_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_tRNS,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_zTXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_zTXt,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-PNG_INTERNAL_FUNCTION(void,png_check_chunk_name,(png_const_structrp png_ptr,
-    png_uint_32 chunk_name),PNG_EMPTY);
-
-PNG_INTERNAL_FUNCTION(void,png_check_chunk_length,(png_const_structrp png_ptr,
-    png_uint_32 chunk_length),PNG_EMPTY);
-
-PNG_INTERNAL_FUNCTION(void,png_handle_unknown,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length, int keep),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(png_handle_result_code,png_handle_unknown,
+    (png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length, int keep),
+    PNG_EMPTY);
    /* This is the function that gets called for unknown chunks.  The 'keep'
     * argument is either non-zero for a known chunk that has been set to be
     * handled as unknown or zero for an unknown chunk.  By default the function
@@ -1615,6 +1619,12 @@
     * just skips the chunk or errors out if it is critical.
     */
 
+PNG_INTERNAL_FUNCTION(png_handle_result_code,png_handle_chunk,
+    (png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
+   /* This handles the current chunk png_ptr->chunk_name with unread
+    * data[length] and returns one of the above result codes.
+    */
+
 #if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) ||\
     defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
 PNG_INTERNAL_FUNCTION(int,png_chunk_unknown_handling,
@@ -1654,8 +1664,6 @@
     png_bytep buffer, size_t buffer_length),PNG_EMPTY);
 PNG_INTERNAL_FUNCTION(void,png_push_process_row,(png_structrp png_ptr),
     PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_handle_unknown,(png_structrp png_ptr,
-   png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
 PNG_INTERNAL_FUNCTION(void,png_push_have_info,(png_structrp png_ptr,
    png_inforp info_ptr),PNG_EMPTY);
 PNG_INTERNAL_FUNCTION(void,png_push_have_end,(png_structrp png_ptr,
@@ -1668,109 +1676,28 @@
     png_inforp info_ptr),PNG_EMPTY);
 PNG_INTERNAL_FUNCTION(void,png_read_push_finish_row,(png_structrp png_ptr),
     PNG_EMPTY);
-#  ifdef PNG_READ_tEXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_push_handle_tEXt,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_read_tEXt,(png_structrp png_ptr,
-    png_inforp info_ptr),PNG_EMPTY);
-#  endif
-#  ifdef PNG_READ_zTXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_push_handle_zTXt,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_read_zTXt,(png_structrp png_ptr,
-    png_inforp info_ptr),PNG_EMPTY);
-#  endif
-#  ifdef PNG_READ_iTXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_push_handle_iTXt,(png_structrp png_ptr,
-    png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_read_iTXt,(png_structrp png_ptr,
-    png_inforp info_ptr),PNG_EMPTY);
-#  endif
-
 #endif /* PROGRESSIVE_READ */
 
-/* Added at libpng version 1.6.0 */
-#ifdef PNG_GAMMA_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_colorspace_set_gamma,(png_const_structrp png_ptr,
-    png_colorspacerp colorspace, png_fixed_point gAMA), PNG_EMPTY);
-   /* Set the colorspace gamma with a value provided by the application or by
-    * the gAMA chunk on read.  The value will override anything set by an ICC
-    * profile.
-    */
-
-PNG_INTERNAL_FUNCTION(void,png_colorspace_sync_info,(png_const_structrp png_ptr,
-    png_inforp info_ptr), PNG_EMPTY);
-   /* Synchronize the info 'valid' flags with the colorspace */
-
-PNG_INTERNAL_FUNCTION(void,png_colorspace_sync,(png_const_structrp png_ptr,
-    png_inforp info_ptr), PNG_EMPTY);
-   /* Copy the png_struct colorspace to the info_struct and call the above to
-    * synchronize the flags.  Checks for NULL info_ptr and does nothing.
-    */
-#endif
-
-/* Added at libpng version 1.4.0 */
-#ifdef PNG_COLORSPACE_SUPPORTED
-/* These internal functions are for maintaining the colorspace structure within
- * a png_info or png_struct (or, indeed, both).
- */
-PNG_INTERNAL_FUNCTION(int,png_colorspace_set_chromaticities,
-   (png_const_structrp png_ptr, png_colorspacerp colorspace, const png_xy *xy,
-    int preferred), PNG_EMPTY);
-
-PNG_INTERNAL_FUNCTION(int,png_colorspace_set_endpoints,
-   (png_const_structrp png_ptr, png_colorspacerp colorspace, const png_XYZ *XYZ,
-    int preferred), PNG_EMPTY);
-
-#ifdef PNG_sRGB_SUPPORTED
-PNG_INTERNAL_FUNCTION(int,png_colorspace_set_sRGB,(png_const_structrp png_ptr,
-   png_colorspacerp colorspace, int intent), PNG_EMPTY);
-   /* This does set the colorspace gAMA and cHRM values too, but doesn't set the
-    * flags to write them, if it returns false there was a problem and an error
-    * message has already been output (but the colorspace may still need to be
-    * synced to record the invalid flag).
-    */
-#endif /* sRGB */
-
 #ifdef PNG_iCCP_SUPPORTED
-PNG_INTERNAL_FUNCTION(int,png_colorspace_set_ICC,(png_const_structrp png_ptr,
-   png_colorspacerp colorspace, png_const_charp name,
-   png_uint_32 profile_length, png_const_bytep profile, int color_type),
-   PNG_EMPTY);
-   /* The 'name' is used for information only */
-
 /* Routines for checking parts of an ICC profile. */
 #ifdef PNG_READ_iCCP_SUPPORTED
 PNG_INTERNAL_FUNCTION(int,png_icc_check_length,(png_const_structrp png_ptr,
-   png_colorspacerp colorspace, png_const_charp name,
-   png_uint_32 profile_length), PNG_EMPTY);
+   png_const_charp name, png_uint_32 profile_length), PNG_EMPTY);
 #endif /* READ_iCCP */
 PNG_INTERNAL_FUNCTION(int,png_icc_check_header,(png_const_structrp png_ptr,
-   png_colorspacerp colorspace, png_const_charp name,
-   png_uint_32 profile_length,
+   png_const_charp name, png_uint_32 profile_length,
    png_const_bytep profile /* first 132 bytes only */, int color_type),
    PNG_EMPTY);
 PNG_INTERNAL_FUNCTION(int,png_icc_check_tag_table,(png_const_structrp png_ptr,
-   png_colorspacerp colorspace, png_const_charp name,
-   png_uint_32 profile_length,
+   png_const_charp name, png_uint_32 profile_length,
    png_const_bytep profile /* header plus whole tag table */), PNG_EMPTY);
-#ifdef PNG_sRGB_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_icc_set_sRGB,(
-   png_const_structrp png_ptr, png_colorspacerp colorspace,
-   png_const_bytep profile, uLong adler), PNG_EMPTY);
-   /* 'adler' is the Adler32 checksum of the uncompressed profile data. It may
-    * be zero to indicate that it is not available.  It is used, if provided,
-    * as a fast check on the profile when checking to see if it is sRGB.
-    */
-#endif
 #endif /* iCCP */
 
 #ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_colorspace_set_rgb_coefficients,
-   (png_structrp png_ptr), PNG_EMPTY);
-   /* Set the rgb_to_gray coefficients from the colorspace Y values */
+PNG_INTERNAL_FUNCTION(void,png_set_rgb_coefficients, (png_structrp png_ptr),
+   PNG_EMPTY);
+   /* Set the rgb_to_gray coefficients from the cHRM Y values (if unset) */
 #endif /* READ_RGB_TO_GRAY */
-#endif /* COLORSPACE */
 
 /* Added at libpng version 1.4.0 */
 PNG_INTERNAL_FUNCTION(void,png_check_IHDR,(png_const_structrp png_ptr,
@@ -2032,8 +1959,10 @@
    size_t size),PNG_EMPTY);
 #endif /* pCAL || sCAL */
 
-#if defined(PNG_GAMMA_SUPPORTED) ||\
-    defined(PNG_INCH_CONVERSIONS_SUPPORTED) || defined(PNG_READ_pHYs_SUPPORTED)
+#if defined(PNG_READ_GAMMA_SUPPORTED) ||\
+    defined(PNG_COLORSPACE_SUPPORTED) ||\
+    defined(PNG_INCH_CONVERSIONS_SUPPORTED) ||\
+    defined(PNG_READ_pHYs_SUPPORTED)
 /* Added at libpng version 1.5.0 */
 /* This is a utility to provide a*times/div (rounded) and indicate
  * if there is an overflow.  The result is a boolean - false (0)
@@ -2042,16 +1971,7 @@
  */
 PNG_INTERNAL_FUNCTION(int,png_muldiv,(png_fixed_point_p res, png_fixed_point a,
    png_int_32 multiplied_by, png_int_32 divided_by),PNG_EMPTY);
-#endif
 
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_INCH_CONVERSIONS_SUPPORTED)
-/* Same deal, but issue a warning on overflow and return 0. */
-PNG_INTERNAL_FUNCTION(png_fixed_point,png_muldiv_warn,
-   (png_const_structrp png_ptr, png_fixed_point a, png_int_32 multiplied_by,
-   png_int_32 divided_by),PNG_EMPTY);
-#endif
-
-#ifdef PNG_GAMMA_SUPPORTED
 /* Calculate a reciprocal - used for gamma values.  This returns
  * 0 if the argument is 0 in order to maintain an undefined value;
  * there are no warnings.
@@ -2058,6 +1978,7 @@
  */
 PNG_INTERNAL_FUNCTION(png_fixed_point,png_reciprocal,(png_fixed_point a),
    PNG_EMPTY);
+#endif
 
 #ifdef PNG_READ_GAMMA_SUPPORTED
 /* The same but gives a reciprocal of the product of two fixed point
@@ -2066,14 +1987,22 @@
  */
 PNG_INTERNAL_FUNCTION(png_fixed_point,png_reciprocal2,(png_fixed_point a,
    png_fixed_point b),PNG_EMPTY);
-#endif
 
 /* Return true if the gamma value is significantly different from 1.0 */
 PNG_INTERNAL_FUNCTION(int,png_gamma_significant,(png_fixed_point gamma_value),
    PNG_EMPTY);
-#endif
 
-#ifdef PNG_READ_GAMMA_SUPPORTED
+/* PNGv3: 'resolve' the file gamma according to the new PNGv3 rules for colour
+ * space information.
+ *
+ * NOTE: this uses precisely those chunks that libpng supports.  For example it
+ * doesn't use iCCP and it can only use cICP for known and manageable
+ * transforms.  For this reason a gamma specified by png_set_gamma always takes
+ * precedence.
+ */
+PNG_INTERNAL_FUNCTION(png_fixed_point,png_resolve_file_gamma,
+   (png_const_structrp png_ptr),PNG_EMPTY);
+
 /* Internal fixed point gamma correction.  These APIs are called as
  * required to convert single values - they don't need to be fast,
  * they are not used when processing image pixel values.
@@ -2091,8 +2020,24 @@
    PNG_EMPTY);
 PNG_INTERNAL_FUNCTION(void,png_build_gamma_table,(png_structrp png_ptr,
    int bit_depth),PNG_EMPTY);
+#endif /* READ_GAMMA */
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+/* Set the RGB coefficients if not already set by png_set_rgb_to_gray */
+PNG_INTERNAL_FUNCTION(void,png_set_rgb_coefficients,(png_structrp png_ptr),
+   PNG_EMPTY);
 #endif
 
+#if defined(PNG_cHRM_SUPPORTED) || defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+PNG_INTERNAL_FUNCTION(int,png_XYZ_from_xy,(png_XYZ *XYZ, const png_xy *xy),
+   PNG_EMPTY);
+#endif /* cHRM || READ_RGB_TO_GRAY */
+
+#ifdef PNG_COLORSPACE_SUPPORTED
+PNG_INTERNAL_FUNCTION(int,png_xy_from_XYZ,(png_xy *xy, const png_XYZ *XYZ),
+   PNG_EMPTY);
+#endif
+
 /* SIMPLIFIED READ/WRITE SUPPORT */
 #if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\
    defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
@@ -2224,4 +2169,3 @@
 #endif
 
 #endif /* PNG_VERSION_INFO_ONLY */
-#endif /* PNGPRIV_H */

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngread.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngread.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngread.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -131,14 +131,11 @@
          png_ptr->mode |= PNG_AFTER_IDAT;
       }
 
-      /* This should be a binary subdivision search or a hash for
-       * matching the chunk name rather than a linear search.
-       */
       if (chunk_name == png_IHDR)
-         png_handle_IHDR(png_ptr, info_ptr, length);
+         png_handle_chunk(png_ptr, info_ptr, length);
 
       else if (chunk_name == png_IEND)
-         png_handle_IEND(png_ptr, info_ptr, length);
+         png_handle_chunk(png_ptr, info_ptr, length);
 
 #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
       else if ((keep = png_chunk_unknown_handling(png_ptr, chunk_name)) != 0)
@@ -155,8 +152,6 @@
          }
       }
 #endif
-      else if (chunk_name == png_PLTE)
-         png_handle_PLTE(png_ptr, info_ptr, length);
 
       else if (chunk_name == png_IDAT)
       {
@@ -164,114 +159,8 @@
          break;
       }
 
-#ifdef PNG_READ_bKGD_SUPPORTED
-      else if (chunk_name == png_bKGD)
-         png_handle_bKGD(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_cHRM_SUPPORTED
-      else if (chunk_name == png_cHRM)
-         png_handle_cHRM(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_cICP_SUPPORTED
-      else if (chunk_name == png_cICP)
-         png_handle_cICP(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_cLLI_SUPPORTED
-      else if (chunk_name == png_cLLI)
-         png_handle_cLLI(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_eXIf_SUPPORTED
-      else if (chunk_name == png_eXIf)
-         png_handle_eXIf(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_gAMA_SUPPORTED
-      else if (chunk_name == png_gAMA)
-         png_handle_gAMA(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_hIST_SUPPORTED
-      else if (chunk_name == png_hIST)
-         png_handle_hIST(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_mDCV_SUPPORTED
-      else if (chunk_name == png_mDCV)
-         png_handle_mDCV(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_oFFs_SUPPORTED
-      else if (chunk_name == png_oFFs)
-         png_handle_oFFs(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_pCAL_SUPPORTED
-      else if (chunk_name == png_pCAL)
-         png_handle_pCAL(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sCAL_SUPPORTED
-      else if (chunk_name == png_sCAL)
-         png_handle_sCAL(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_pHYs_SUPPORTED
-      else if (chunk_name == png_pHYs)
-         png_handle_pHYs(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sBIT_SUPPORTED
-      else if (chunk_name == png_sBIT)
-         png_handle_sBIT(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sRGB_SUPPORTED
-      else if (chunk_name == png_sRGB)
-         png_handle_sRGB(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_iCCP_SUPPORTED
-      else if (chunk_name == png_iCCP)
-         png_handle_iCCP(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sPLT_SUPPORTED
-      else if (chunk_name == png_sPLT)
-         png_handle_sPLT(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_tEXt_SUPPORTED
-      else if (chunk_name == png_tEXt)
-         png_handle_tEXt(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_tIME_SUPPORTED
-      else if (chunk_name == png_tIME)
-         png_handle_tIME(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_tRNS_SUPPORTED
-      else if (chunk_name == png_tRNS)
-         png_handle_tRNS(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_zTXt_SUPPORTED
-      else if (chunk_name == png_zTXt)
-         png_handle_zTXt(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_iTXt_SUPPORTED
-      else if (chunk_name == png_iTXt)
-         png_handle_iTXt(png_ptr, info_ptr, length);
-#endif
-
       else
-         png_handle_unknown(png_ptr, info_ptr, length,
-             PNG_HANDLE_CHUNK_AS_DEFAULT);
+         png_handle_chunk(png_ptr, info_ptr, length);
    }
 }
 #endif /* SEQUENTIAL_READ */
@@ -816,10 +705,10 @@
          png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
 
       if (chunk_name == png_IEND)
-         png_handle_IEND(png_ptr, info_ptr, length);
+         png_handle_chunk(png_ptr, info_ptr, length);
 
       else if (chunk_name == png_IHDR)
-         png_handle_IHDR(png_ptr, info_ptr, length);
+         png_handle_chunk(png_ptr, info_ptr, length);
 
       else if (info_ptr == NULL)
          png_crc_finish(png_ptr, length);
@@ -853,117 +742,9 @@
 
          png_crc_finish(png_ptr, length);
       }
-      else if (chunk_name == png_PLTE)
-         png_handle_PLTE(png_ptr, info_ptr, length);
 
-#ifdef PNG_READ_bKGD_SUPPORTED
-      else if (chunk_name == png_bKGD)
-         png_handle_bKGD(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_cHRM_SUPPORTED
-      else if (chunk_name == png_cHRM)
-         png_handle_cHRM(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_cICP_SUPPORTED
-      else if (chunk_name == png_cICP)
-         png_handle_cICP(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_cLLI_SUPPORTED
-      else if (chunk_name == png_cLLI)
-         png_handle_cLLI(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_eXIf_SUPPORTED
-      else if (chunk_name == png_eXIf)
-         png_handle_eXIf(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_gAMA_SUPPORTED
-      else if (chunk_name == png_gAMA)
-         png_handle_gAMA(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_hIST_SUPPORTED
-      else if (chunk_name == png_hIST)
-         png_handle_hIST(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_mDCV_SUPPORTED
-      else if (chunk_name == png_mDCV)
-         png_handle_mDCV(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_oFFs_SUPPORTED
-      else if (chunk_name == png_oFFs)
-         png_handle_oFFs(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_pCAL_SUPPORTED
-      else if (chunk_name == png_pCAL)
-         png_handle_pCAL(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sCAL_SUPPORTED
-      else if (chunk_name == png_sCAL)
-         png_handle_sCAL(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_pHYs_SUPPORTED
-      else if (chunk_name == png_pHYs)
-         png_handle_pHYs(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sBIT_SUPPORTED
-      else if (chunk_name == png_sBIT)
-         png_handle_sBIT(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sRGB_SUPPORTED
-      else if (chunk_name == png_sRGB)
-         png_handle_sRGB(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_iCCP_SUPPORTED
-      else if (chunk_name == png_iCCP)
-         png_handle_iCCP(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sPLT_SUPPORTED
-      else if (chunk_name == png_sPLT)
-         png_handle_sPLT(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_tEXt_SUPPORTED
-      else if (chunk_name == png_tEXt)
-         png_handle_tEXt(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_tIME_SUPPORTED
-      else if (chunk_name == png_tIME)
-         png_handle_tIME(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_tRNS_SUPPORTED
-      else if (chunk_name == png_tRNS)
-         png_handle_tRNS(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_zTXt_SUPPORTED
-      else if (chunk_name == png_zTXt)
-         png_handle_zTXt(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_iTXt_SUPPORTED
-      else if (chunk_name == png_iTXt)
-         png_handle_iTXt(png_ptr, info_ptr, length);
-#endif
-
       else
-         png_handle_unknown(png_ptr, info_ptr, length,
-             PNG_HANDLE_CHUNK_AS_DEFAULT);
+         png_handle_chunk(png_ptr, info_ptr, length);
    } while ((png_ptr->mode & PNG_HAVE_IEND) == 0);
 }
 #endif /* SEQUENTIAL_READ */
@@ -1414,6 +1195,31 @@
    return format;
 }
 
+static int
+chromaticities_match_sRGB(const png_xy *xy)
+{
+#  define sRGB_TOLERANCE 1000
+   static const png_xy sRGB_xy = /* From ITU-R BT.709-3 */
+   {
+      /* color      x       y */
+      /* red   */ 64000, 33000,
+      /* green */ 30000, 60000,
+      /* blue  */ 15000,  6000,
+      /* white */ 31270, 32900
+   };
+
+   if (PNG_OUT_OF_RANGE(xy->whitex, sRGB_xy.whitex,sRGB_TOLERANCE) ||
+       PNG_OUT_OF_RANGE(xy->whitey, sRGB_xy.whitey,sRGB_TOLERANCE) ||
+       PNG_OUT_OF_RANGE(xy->redx,   sRGB_xy.redx,  sRGB_TOLERANCE) ||
+       PNG_OUT_OF_RANGE(xy->redy,   sRGB_xy.redy,  sRGB_TOLERANCE) ||
+       PNG_OUT_OF_RANGE(xy->greenx, sRGB_xy.greenx,sRGB_TOLERANCE) ||
+       PNG_OUT_OF_RANGE(xy->greeny, sRGB_xy.greeny,sRGB_TOLERANCE) ||
+       PNG_OUT_OF_RANGE(xy->bluex,  sRGB_xy.bluex, sRGB_TOLERANCE) ||
+       PNG_OUT_OF_RANGE(xy->bluey,  sRGB_xy.bluey, sRGB_TOLERANCE))
+      return 0;
+   return 1;
+}
+
 /* Is the given gamma significantly different from sRGB?  The test is the same
  * one used in pngrtran.c when deciding whether to do gamma correction.  The
  * arithmetic optimizes the division by using the fact that the inverse of the
@@ -1422,16 +1228,11 @@
 static int
 png_gamma_not_sRGB(png_fixed_point g)
 {
-   if (g < PNG_FP_1)
-   {
-      /* An uninitialized gamma is assumed to be sRGB for the simplified API. */
-      if (g == 0)
-         return 0;
+   /* 1.6.47: use the same sanity checks as used in pngrtran.c */
+   if (g < PNG_LIB_GAMMA_MIN || g > PNG_LIB_GAMMA_MAX)
+      return 0; /* Includes the uninitialized value 0 */
 
-      return png_gamma_significant((g * 11 + 2)/5 /* i.e. *2.2, rounded */);
-   }
-
-   return 1;
+   return png_gamma_significant((g * 11 + 2)/5 /* i.e. *2.2, rounded */);
 }
 
 /* Do the main body of a 'png_image_begin_read' function; read the PNG file
@@ -1439,6 +1240,33 @@
  * unlike the init routine above.
  */
 static int
+png_image_is_not_sRGB(png_const_structrp png_ptr)
+{
+   /* Does the colorspace **not** match sRGB?  The flag is only set if the
+    * answer can be determined reliably.
+    *
+    * png_struct::chromaticities always exists since the simplified API
+    * requires rgb-to-gray.  The mDCV, cICP and cHRM chunks may all set it to
+    * a non-sRGB value, so it needs to be checked but **only** if one of
+    * those chunks occured in the file.
+    */
+   /* Highest priority: check to be safe. */
+   if (png_has_chunk(png_ptr, cICP) || png_has_chunk(png_ptr, mDCV))
+      return !chromaticities_match_sRGB(&png_ptr->chromaticities);
+
+   /* If the image is marked as sRGB then it is... */
+   if (png_has_chunk(png_ptr, sRGB))
+      return 0;
+
+   /* Last stop: cHRM, must check: */
+   if (png_has_chunk(png_ptr, cHRM))
+      return !chromaticities_match_sRGB(&png_ptr->chromaticities);
+
+   /* Else default to sRGB */
+   return 0;
+}
+
+static int
 png_image_read_header(png_voidp argument)
 {
    png_imagep image = png_voidcast(png_imagep, argument);
@@ -1459,17 +1287,13 @@
 
       image->format = format;
 
-#ifdef PNG_COLORSPACE_SUPPORTED
-      /* Does the colorspace match sRGB?  If there is no color endpoint
-       * (colorant) information assume yes, otherwise require the
-       * 'ENDPOINTS_MATCHP_sRGB' colorspace flag to have been set.  If the
-       * colorspace has been determined to be invalid ignore it.
+      /* Greyscale images don't (typically) have colour space information and
+       * using it is pretty much impossible, so use sRGB for grayscale (it
+       * doesn't matter r==g==b so the transform is irrelevant.)
        */
-      if ((format & PNG_FORMAT_FLAG_COLOR) != 0 && ((png_ptr->colorspace.flags
-         & (PNG_COLORSPACE_HAVE_ENDPOINTS|PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB|
-            PNG_COLORSPACE_INVALID)) == PNG_COLORSPACE_HAVE_ENDPOINTS))
+      if ((format & PNG_FORMAT_FLAG_COLOR) != 0 &&
+          png_image_is_not_sRGB(png_ptr))
          image->flags |= PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB;
-#endif
    }
 
    /* We need the maximum number of entries regardless of the format the
@@ -1504,7 +1328,7 @@
 
 #ifdef PNG_STDIO_SUPPORTED
 int PNGAPI
-png_image_begin_read_from_stdio(png_imagep image, FILE* file)
+png_image_begin_read_from_stdio(png_imagep image, FILE *file)
 {
    if (image != NULL && image->version == PNG_IMAGE_VERSION)
    {
@@ -1657,21 +1481,18 @@
     * potential vulnerability to security problems in the unused chunks.
     *
     * At present the iCCP chunk data isn't used, so iCCP chunk can be ignored
-    * too.  This allows the simplified API to be compiled without iCCP support,
-    * however if the support is there the chunk is still checked to detect
-    * errors (which are unfortunately quite common.)
+    * too.  This allows the simplified API to be compiled without iCCP support.
     */
    {
          static const png_byte chunks_to_process[] = {
             98,  75,  71,  68, '\0',  /* bKGD */
             99,  72,  82,  77, '\0',  /* cHRM */
+            99,  73,  67,  80, '\0',  /* cICP */
            103,  65,  77,  65, '\0',  /* gAMA */
-#        ifdef PNG_READ_iCCP_SUPPORTED
-           105,  67,  67,  80, '\0',  /* iCCP */
-#        endif
+           109,  68,  67,  86, '\0',  /* mDCV */
            115,  66,  73,  84, '\0',  /* sBIT */
            115,  82,  71,  66, '\0',  /* sRGB */
-           };
+         };
 
        /* Ignore unknown chunks and all other chunks except for the
         * IHDR, PLTE, tRNS, IDAT, and IEND chunks.
@@ -1700,7 +1521,15 @@
 static void
 set_file_encoding(png_image_read_control *display)
 {
-   png_fixed_point g = display->image->opaque->png_ptr->colorspace.gamma;
+   png_structrp png_ptr = display->image->opaque->png_ptr;
+   png_fixed_point g = png_resolve_file_gamma(png_ptr);
+
+   /* PNGv3: the result may be 0 however the 'default_gamma' should have been
+    * set before this is called so zero is an error:
+    */
+   if (g == 0)
+      png_error(png_ptr, "internal: default gamma not set");
+
    if (png_gamma_significant(g) != 0)
    {
       if (png_gamma_not_sRGB(g) != 0)
@@ -2188,25 +2017,19 @@
    /* Default the input file gamma if required - this is necessary because
     * libpng assumes that if no gamma information is present the data is in the
     * output format, but the simplified API deduces the gamma from the input
-    * format.
+    * format.  The 'default' gamma value is also set by png_set_alpha_mode, but
+    * this is happening before any such call, so:
+    *
+    * TODO: should be an internal API and all this code should be copied into a
+    * single common gamma+colorspace file.
     */
-   if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) == 0)
-   {
-      /* Do this directly, not using the png_colorspace functions, to ensure
-       * that it happens even if the colorspace is invalid (though probably if
-       * it is the setting will be ignored)  Note that the same thing can be
-       * achieved at the application interface with png_set_gAMA.
-       */
-      if (png_ptr->bit_depth == 16 &&
-         (image->flags & PNG_IMAGE_FLAG_16BIT_sRGB) == 0)
-         png_ptr->colorspace.gamma = PNG_GAMMA_LINEAR;
+   if (png_ptr->bit_depth == 16 &&
+      (image->flags & PNG_IMAGE_FLAG_16BIT_sRGB) == 0)
+      png_ptr->default_gamma = PNG_GAMMA_LINEAR;
 
-      else
-         png_ptr->colorspace.gamma = PNG_GAMMA_sRGB_INVERSE;
+   else
+      png_ptr->default_gamma = PNG_GAMMA_sRGB_INVERSE;
 
-      png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA;
-   }
-
    /* Decide what to do based on the PNG color type of the input data.  The
     * utility function png_create_colormap_entry deals with most aspects of the
     * output transformations; this code works out how to produce bytes of
@@ -2583,6 +2406,8 @@
 
             else
             {
+               const png_fixed_point gamma = png_resolve_file_gamma(png_ptr);
+
                /* Either the input or the output has no alpha channel, so there
                 * will be no non-opaque pixels in the color-map; it will just be
                 * grayscale.
@@ -2597,10 +2422,13 @@
                 * this case and doing it in the palette; this will result in
                 * duplicate palette entries, but that's better than the
                 * alternative of double gamma correction.
+                *
+                * NOTE: PNGv3: check the resolved result of all the potentially
+                * different colour space chunks.
                 */
                if ((png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
                   png_ptr->num_trans > 0) &&
-                  png_gamma_not_sRGB(png_ptr->colorspace.gamma) != 0)
+                  png_gamma_not_sRGB(gamma) != 0)
                {
                   cmap_entries = (unsigned int)make_gray_file_colormap(display);
                   data_encoding = P_FILE;
@@ -2632,8 +2460,8 @@
                      if (output_encoding == P_sRGB)
                         gray = png_sRGB_table[gray]; /* now P_LINEAR */
 
-                     gray = PNG_DIV257(png_gamma_16bit_correct(gray,
-                         png_ptr->colorspace.gamma)); /* now P_FILE */
+                     gray = PNG_DIV257(png_gamma_16bit_correct(gray, gamma));
+                        /* now P_FILE */
 
                      /* And make sure the corresponding palette entry contains
                       * exactly the required sRGB value.
@@ -3764,6 +3592,12 @@
       /* Set the gamma appropriately, linear for 16-bit input, sRGB otherwise.
        */
       {
+         /* This is safe but should no longer be necessary as
+          * png_ptr->default_gamma should have been set after the
+          * info-before-IDAT was read in png_image_read_header.
+          *
+          * TODO: 1.8: remove this and see what happens.
+          */
          png_fixed_point input_gamma_default;
 
          if ((base_format & PNG_FORMAT_FLAG_LINEAR) != 0 &&
@@ -3819,8 +3653,9 @@
           * yet; it's set below.  png_struct::gamma, however, is set to the
           * final value.
           */
-         if (png_muldiv(&gtest, output_gamma, png_ptr->colorspace.gamma,
-             PNG_FP_1) != 0 && png_gamma_significant(gtest) == 0)
+         if (png_muldiv(&gtest, output_gamma,
+                  png_resolve_file_gamma(png_ptr), PNG_FP_1) != 0 &&
+             png_gamma_significant(gtest) == 0)
             do_local_background = 0;
 
          else if (mode == PNG_ALPHA_STANDARD)

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngrio.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngrio.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngrio.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pngrio.c - functions for data input
  *
- * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -56,7 +56,7 @@
    /* fread() returns 0 on error, so it is OK to store this in a size_t
     * instead of an int, which is what fread() actually returns.
     */
-   check = fread(data, 1, length, png_voidcast(png_FILE_p, png_ptr->io_ptr));
+   check = fread(data, 1, length, png_voidcast(FILE *, png_ptr->io_ptr));
 
    if (check != length)
       png_error(png_ptr, "Read Error");

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngrtran.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngrtran.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngrtran.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -218,9 +218,59 @@
 #endif
 
 #if defined(PNG_READ_ALPHA_MODE_SUPPORTED) || defined(PNG_READ_GAMMA_SUPPORTED)
+/* PNGv3 conformance: this private API exists to resolve the now mandatory error
+ * resolution when multiple conflicting sources of gamma or colour space
+ * information are available.
+ *
+ * Terminology (assuming power law, "gamma", encodings):
+ *    "screen" gamma: a power law imposed by the output device when digital
+ *    samples are converted to visible light output.  The EOTF - volage to
+ *    luminance on output.
+ *
+ *    "file" gamma: a power law used to encode luminance levels from the input
+ *    data (the scene or the mastering display system) into digital voltages.
+ *    The OETF - luminance to voltage on input.
+ *
+ *    gamma "correction": a power law matching the **inverse** of the overall
+ *    transfer function from input luminance levels to output levels.  The
+ *    **inverse** of the OOTF; the correction "corrects" for the OOTF by aiming
+ *    to make the overall OOTF (including the correction) linear.
+ *
+ * It is important to understand this terminology because the defined terms are
+ * scattered throughout the libpng code and it is very easy to end up with the
+ * inverse of the power law required.
+ *
+ * Variable and struct::member names:
+ *    file_gamma        OETF  how the PNG data was encoded
+ *
+ *    screen_gamma      EOTF  how the screen will decode digital levels
+ *
+ *    -- not used --    OOTF  the net effect OETF x EOTF
+ *    gamma_correction        the inverse of OOTF to make the result linear
+ *
+ * All versions of libpng require a call to "png_set_gamma" to establish the
+ * "screen" gamma, the power law representing the EOTF.  png_set_gamma may also
+ * set or default the "file" gamma; the OETF.  gamma_correction is calculated
+ * internally.
+ *
+ * The earliest libpng versions required file_gamma to be supplied to set_gamma.
+ * Later versions started allowing png_set_gamma and, later, png_set_alpha_mode,
+ * to cause defaulting from the file data.
+ *
+ * PNGv3 mandated a particular form for this defaulting, one that is compatible
+ * with what libpng did except that if libpng detected inconsistencies it marked
+ * all the chunks as "invalid".  PNGv3 effectively invalidates this prior code.
+ *
+ * Behaviour implemented below:
+ *    translate_gamma_flags(gamma, is_screen)
+ *       The libpng-1.6 API for the gamma parameters to libpng APIs
+ *       (png_set_gamma and png_set_alpha_mode at present).  This allows the
+ *       'gamma' value to be passed as a png_fixed_point number or as one of a
+ *       set of integral values for specific "well known" examples of transfer
+ *       functions.  This is compatible with PNGv3.
+ */
 static png_fixed_point
-translate_gamma_flags(png_structrp png_ptr, png_fixed_point output_gamma,
-    int is_screen)
+translate_gamma_flags(png_fixed_point output_gamma, int is_screen)
 {
    /* Check for flag values.  The main reason for having the old Mac value as a
     * flag is that it is pretty near impossible to work out what the correct
@@ -230,14 +280,6 @@
    if (output_gamma == PNG_DEFAULT_sRGB ||
       output_gamma == PNG_FP_1 / PNG_DEFAULT_sRGB)
    {
-      /* If there is no sRGB support this just sets the gamma to the standard
-       * sRGB value.  (This is a side effect of using this function!)
-       */
-#     ifdef PNG_READ_sRGB_SUPPORTED
-         png_ptr->flags |= PNG_FLAG_ASSUME_sRGB;
-#     else
-         PNG_UNUSED(png_ptr)
-#     endif
       if (is_screen != 0)
          output_gamma = PNG_GAMMA_sRGB;
       else
@@ -279,6 +321,33 @@
    return (png_fixed_point)output_gamma;
 }
 #  endif
+
+static int
+unsupported_gamma(png_structrp png_ptr, png_fixed_point gamma, int warn)
+{
+   /* Validate a gamma value to ensure it is in a reasonable range.  The value
+    * is expected to be 1 or greater, but this range test allows for some
+    * viewing correction values.  The intent is to weed out the API users
+    * who might use the inverse of the gamma value accidentally!
+    *
+    * 1.6.47: apply the test in png_set_gamma as well but only warn and return
+    * false if it fires.
+    *
+    * TODO: 1.8: make this an app_error in png_set_gamma as well.
+    */
+   if (gamma < PNG_LIB_GAMMA_MIN || gamma > PNG_LIB_GAMMA_MAX)
+   {
+#     define msg "gamma out of supported range"
+      if (warn)
+         png_app_warning(png_ptr, msg);
+      else
+         png_app_error(png_ptr, msg);
+      return 1;
+#     undef msg
+   }
+
+   return 0;
+}
 #endif /* READ_ALPHA_MODE || READ_GAMMA */
 
 #ifdef PNG_READ_ALPHA_MODE_SUPPORTED
@@ -286,8 +355,8 @@
 png_set_alpha_mode_fixed(png_structrp png_ptr, int mode,
     png_fixed_point output_gamma)
 {
+   png_fixed_point file_gamma;
    int compose = 0;
-   png_fixed_point file_gamma;
 
    png_debug(1, "in png_set_alpha_mode_fixed");
 
@@ -294,23 +363,21 @@
    if (png_rtran_ok(png_ptr, 0) == 0)
       return;
 
-   output_gamma = translate_gamma_flags(png_ptr, output_gamma, 1/*screen*/);
+   output_gamma = translate_gamma_flags(output_gamma, 1/*screen*/);
+   if (unsupported_gamma(png_ptr, output_gamma, 0/*error*/))
+      return;
 
-   /* Validate the value to ensure it is in a reasonable range.  The value
-    * is expected to be 1 or greater, but this range test allows for some
-    * viewing correction values.  The intent is to weed out the API users
-    * who might use the inverse of the gamma value accidentally!
-    *
-    * In libpng 1.6.0, we changed from 0.07..3 to 0.01..100, to accommodate
-    * the optimal 16-bit gamma of 36 and its reciprocal.
-    */
-   if (output_gamma < 1000 || output_gamma > 10000000)
-      png_error(png_ptr, "output gamma out of expected range");
-
    /* The default file gamma is the inverse of the output gamma; the output
-    * gamma may be changed below so get the file value first:
+    * gamma may be changed below so get the file value first.  The default_gamma
+    * is set here and from the simplified API (which uses a different algorithm)
+    * so don't overwrite a set value:
     */
-   file_gamma = png_reciprocal(output_gamma);
+   file_gamma = png_ptr->default_gamma;
+   if (file_gamma == 0)
+   {
+      file_gamma = png_reciprocal(output_gamma);
+      png_ptr->default_gamma = file_gamma;
+   }
 
    /* There are really 8 possibilities here, composed of any combination
     * of:
@@ -361,17 +428,7 @@
          png_error(png_ptr, "invalid alpha mode");
    }
 
-   /* Only set the default gamma if the file gamma has not been set (this has
-    * the side effect that the gamma in a second call to png_set_alpha_mode will
-    * be ignored.)
-    */
-   if (png_ptr->colorspace.gamma == 0)
-   {
-      png_ptr->colorspace.gamma = file_gamma;
-      png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA;
-   }
-
-   /* But always set the output gamma: */
+   /* Set the screen gamma values: */
    png_ptr->screen_gamma = output_gamma;
 
    /* Finally, if pre-multiplying, set the background fields to achieve the
@@ -381,7 +438,7 @@
    {
       /* And obtain alpha pre-multiplication by composing on black: */
       memset(&png_ptr->background, 0, (sizeof png_ptr->background));
-      png_ptr->background_gamma = png_ptr->colorspace.gamma; /* just in case */
+      png_ptr->background_gamma = file_gamma; /* just in case */
       png_ptr->background_gamma_type = PNG_BACKGROUND_GAMMA_FILE;
       png_ptr->transformations &= ~PNG_BACKGROUND_EXPAND;
 
@@ -819,8 +876,8 @@
       return;
 
    /* New in libpng-1.5.4 - reserve particular negative values as flags. */
-   scrn_gamma = translate_gamma_flags(png_ptr, scrn_gamma, 1/*screen*/);
-   file_gamma = translate_gamma_flags(png_ptr, file_gamma, 0/*file*/);
+   scrn_gamma = translate_gamma_flags(scrn_gamma, 1/*screen*/);
+   file_gamma = translate_gamma_flags(file_gamma, 0/*file*/);
 
    /* Checking the gamma values for being >0 was added in 1.5.4 along with the
     * premultiplied alpha support; this actually hides an undocumented feature
@@ -834,17 +891,19 @@
     * libpng-1.6.0.
     */
    if (file_gamma <= 0)
-      png_error(png_ptr, "invalid file gamma in png_set_gamma");
-
+      png_app_error(png_ptr, "invalid file gamma in png_set_gamma");
    if (scrn_gamma <= 0)
-      png_error(png_ptr, "invalid screen gamma in png_set_gamma");
+      png_app_error(png_ptr, "invalid screen gamma in png_set_gamma");
 
-   /* Set the gamma values unconditionally - this overrides the value in the PNG
-    * file if a gAMA chunk was present.  png_set_alpha_mode provides a
-    * different, easier, way to default the file gamma.
+   if (unsupported_gamma(png_ptr, file_gamma, 1/*warn*/) ||
+       unsupported_gamma(png_ptr, scrn_gamma, 1/*warn*/))
+      return;
+
+   /* 1.6.47: png_struct::file_gamma and png_struct::screen_gamma are now only
+    * written by this API.  This removes dependencies on the order of API calls
+    * and allows the complex gamma checks to be delayed until needed.
     */
-   png_ptr->colorspace.gamma = file_gamma;
-   png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA;
+   png_ptr->file_gamma = file_gamma;
    png_ptr->screen_gamma = scrn_gamma;
 }
 
@@ -1022,26 +1081,9 @@
          png_ptr->rgb_to_gray_coefficients_set = 1;
       }
 
-      else
-      {
-         if (red >= 0 && green >= 0)
-            png_app_warning(png_ptr,
-                "ignoring out of range rgb_to_gray coefficients");
-
-         /* Use the defaults, from the cHRM chunk if set, else the historical
-          * values which are close to the sRGB/HDTV/ITU-Rec 709 values.  See
-          * png_do_rgb_to_gray for more discussion of the values.  In this case
-          * the coefficients are not marked as 'set' and are not overwritten if
-          * something has already provided a default.
-          */
-         if (png_ptr->rgb_to_gray_red_coeff == 0 &&
-             png_ptr->rgb_to_gray_green_coeff == 0)
-         {
-            png_ptr->rgb_to_gray_red_coeff   = 6968;
-            png_ptr->rgb_to_gray_green_coeff = 23434;
-            /* png_ptr->rgb_to_gray_blue_coeff  = 2366; */
-         }
-      }
+      else if (red >= 0 && green >= 0)
+         png_app_warning(png_ptr,
+               "ignoring out of range rgb_to_gray coefficients");
    }
 }
 
@@ -1282,6 +1324,80 @@
 #endif /* READ_EXPAND && READ_BACKGROUND */
 }
 
+#ifdef PNG_READ_GAMMA_SUPPORTED
+png_fixed_point /* PRIVATE */
+png_resolve_file_gamma(png_const_structrp png_ptr)
+{
+   png_fixed_point file_gamma;
+
+   /* The file gamma is determined by these precedence rules, in this order
+    * (i.e. use the first value found):
+    *
+    *    png_set_gamma; png_struct::file_gammma if not zero, then:
+    *    png_struct::chunk_gamma if not 0 (determined the PNGv3 rules), then:
+    *    png_set_gamma; 1/png_struct::screen_gamma if not zero
+    *
+    *    0 (i.e. do no gamma handling)
+    */
+   file_gamma = png_ptr->file_gamma;
+   if (file_gamma != 0)
+      return file_gamma;
+
+   file_gamma = png_ptr->chunk_gamma;
+   if (file_gamma != 0)
+      return file_gamma;
+
+   file_gamma = png_ptr->default_gamma;
+   if (file_gamma != 0)
+      return file_gamma;
+
+   /* If png_reciprocal oveflows it returns 0 which indicates to the caller that
+    * there is no usable file gamma.  (The checks added to png_set_gamma and
+    * png_set_alpha_mode should prevent a screen_gamma which would overflow.)
+    */
+   if (png_ptr->screen_gamma != 0)
+      file_gamma = png_reciprocal(png_ptr->screen_gamma);
+
+   return file_gamma;
+}
+
+static int
+png_init_gamma_values(png_structrp png_ptr)
+{
+   /* The following temporary indicates if overall gamma correction is
+    * required.
+    */
+   int gamma_correction = 0;
+   png_fixed_point file_gamma, screen_gamma;
+
+   /* Resolve the file_gamma.  See above: if png_ptr::screen_gamma is set
+    * file_gamma will always be set here:
+    */
+   file_gamma = png_resolve_file_gamma(png_ptr);
+   screen_gamma = png_ptr->screen_gamma;
+
+   if (file_gamma > 0) /* file has been set */
+   {
+      if (screen_gamma > 0) /* screen set too */
+         gamma_correction = png_gamma_threshold(file_gamma, screen_gamma);
+
+      else
+         /* Assume the output matches the input; a long time default behavior
+          * of libpng, although the standard has nothing to say about this.
+          */
+         screen_gamma = png_reciprocal(file_gamma);
+   }
+
+   else /* both unset, prevent corrections: */
+      file_gamma = screen_gamma = PNG_FP_1;
+
+   png_ptr->file_gamma = file_gamma;
+   png_ptr->screen_gamma = screen_gamma;
+   return gamma_correction;
+
+}
+#endif /* READ_GAMMA */
+
 void /* PRIVATE */
 png_init_read_transformations(png_structrp png_ptr)
 {
@@ -1301,59 +1417,22 @@
     * the test needs to be performed later - here.  In addition prior to 1.5.4
     * the tests were repeated for the PALETTE color type here - this is no
     * longer necessary (and doesn't seem to have been necessary before.)
+    *
+    * PNGv3: the new mandatory precedence/priority rules for colour space chunks
+    * are handled here (by calling the above function).
+    *
+    * Turn the gamma transformation on or off as appropriate.  Notice that
+    * PNG_GAMMA just refers to the file->screen correction.  Alpha composition
+    * may independently cause gamma correction because it needs linear data
+    * (e.g. if the file has a gAMA chunk but the screen gamma hasn't been
+    * specified.)  In any case this flag may get turned off in the code
+    * immediately below if the transform can be handled outside the row loop.
     */
-   {
-      /* The following temporary indicates if overall gamma correction is
-       * required.
-       */
-      int gamma_correction = 0;
+   if (png_init_gamma_values(png_ptr) != 0)
+      png_ptr->transformations |= PNG_GAMMA;
 
-      if (png_ptr->colorspace.gamma != 0) /* has been set */
-      {
-         if (png_ptr->screen_gamma != 0) /* screen set too */
-            gamma_correction = png_gamma_threshold(png_ptr->colorspace.gamma,
-                png_ptr->screen_gamma);
-
-         else
-            /* Assume the output matches the input; a long time default behavior
-             * of libpng, although the standard has nothing to say about this.
-             */
-            png_ptr->screen_gamma = png_reciprocal(png_ptr->colorspace.gamma);
-      }
-
-      else if (png_ptr->screen_gamma != 0)
-         /* The converse - assume the file matches the screen, note that this
-          * perhaps undesirable default can (from 1.5.4) be changed by calling
-          * png_set_alpha_mode (even if the alpha handling mode isn't required
-          * or isn't changed from the default.)
-          */
-         png_ptr->colorspace.gamma = png_reciprocal(png_ptr->screen_gamma);
-
-      else /* neither are set */
-         /* Just in case the following prevents any processing - file and screen
-          * are both assumed to be linear and there is no way to introduce a
-          * third gamma value other than png_set_background with 'UNIQUE', and,
-          * prior to 1.5.4
-          */
-         png_ptr->screen_gamma = png_ptr->colorspace.gamma = PNG_FP_1;
-
-      /* We have a gamma value now. */
-      png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA;
-
-      /* Now turn the gamma transformation on or off as appropriate.  Notice
-       * that PNG_GAMMA just refers to the file->screen correction.  Alpha
-       * composition may independently cause gamma correction because it needs
-       * linear data (e.g. if the file has a gAMA chunk but the screen gamma
-       * hasn't been specified.)  In any case this flag may get turned off in
-       * the code immediately below if the transform can be handled outside the
-       * row loop.
-       */
-      if (gamma_correction != 0)
-         png_ptr->transformations |= PNG_GAMMA;
-
-      else
-         png_ptr->transformations &= ~PNG_GAMMA;
-   }
+   else
+      png_ptr->transformations &= ~PNG_GAMMA;
 #endif
 
    /* Certain transformations have the effect of preventing other
@@ -1425,7 +1504,7 @@
     * appropriately.
     */
    if ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0)
-      png_colorspace_set_rgb_coefficients(png_ptr);
+      png_set_rgb_coefficients(png_ptr);
 #endif
 
 #ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
@@ -1568,10 +1647,10 @@
     */
    if ((png_ptr->transformations & PNG_GAMMA) != 0 ||
        ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0 &&
-        (png_gamma_significant(png_ptr->colorspace.gamma) != 0 ||
+        (png_gamma_significant(png_ptr->file_gamma) != 0 ||
          png_gamma_significant(png_ptr->screen_gamma) != 0)) ||
         ((png_ptr->transformations & PNG_COMPOSE) != 0 &&
-         (png_gamma_significant(png_ptr->colorspace.gamma) != 0 ||
+         (png_gamma_significant(png_ptr->file_gamma) != 0 ||
           png_gamma_significant(png_ptr->screen_gamma) != 0
 #  ifdef PNG_READ_BACKGROUND_SUPPORTED
          || (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_UNIQUE &&
@@ -1627,8 +1706,8 @@
                      break;
 
                   case PNG_BACKGROUND_GAMMA_FILE:
-                     g = png_reciprocal(png_ptr->colorspace.gamma);
-                     gs = png_reciprocal2(png_ptr->colorspace.gamma,
+                     g = png_reciprocal(png_ptr->file_gamma);
+                     gs = png_reciprocal2(png_ptr->file_gamma,
                          png_ptr->screen_gamma);
                      break;
 
@@ -1736,8 +1815,8 @@
                   break;
 
                case PNG_BACKGROUND_GAMMA_FILE:
-                  g = png_reciprocal(png_ptr->colorspace.gamma);
-                  gs = png_reciprocal2(png_ptr->colorspace.gamma,
+                  g = png_reciprocal(png_ptr->file_gamma);
+                  gs = png_reciprocal2(png_ptr->file_gamma,
                       png_ptr->screen_gamma);
                   break;
 
@@ -1987,11 +2066,11 @@
     * been called before this from png_read_update_info->png_read_start_row
     * sometimes does the gamma transform and cancels the flag.
     *
-    * TODO: this looks wrong; the info_ptr should end up with a gamma equal to
-    * the screen_gamma value.  The following probably results in weirdness if
-    * the info_ptr is used by the app after the rows have been read.
+    * TODO: this is confusing.  It only changes the result of png_get_gAMA and,
+    * yes, it does return the value that the transformed data effectively has
+    * but does any app really understand this?
     */
-   info_ptr->colorspace.gamma = png_ptr->colorspace.gamma;
+   info_ptr->gamma = png_ptr->file_gamma;
 #endif
 
    if (info_ptr->bit_depth == 16)

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngrutil.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngrutil.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngrutil.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pngrutil.c - utilities to read a PNG file
  *
- * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -17,6 +17,11 @@
 
 #ifdef PNG_READ_SUPPORTED
 
+/* The minimum 'zlib' stream is assumed to be just the 2 byte header, 5 bytes
+ * minimum 'deflate' stream, and the 4 byte checksum.
+ */
+#define LZ77Min  (2U+5U+4U)
+
 #ifdef PNG_READ_INTERLACING_SUPPORTED
 /* Arrays to facilitate interlacing - use pass (0 - 6) as index. */
 
@@ -43,30 +48,6 @@
    return uval;
 }
 
-#if defined(PNG_READ_gAMA_SUPPORTED) || defined(PNG_READ_cHRM_SUPPORTED)
-/* The following is a variation on the above for use with the fixed
- * point values used for gAMA and cHRM.  Instead of png_error it
- * issues a warning and returns (-1) - an invalid value because both
- * gAMA and cHRM use *unsigned* integers for fixed point values.
- */
-#define PNG_FIXED_ERROR (-1)
-
-static png_fixed_point /* PRIVATE */
-png_get_fixed_point(png_structrp png_ptr, png_const_bytep buf)
-{
-   png_uint_32 uval = png_get_uint_32(buf);
-
-   if (uval <= PNG_UINT_31_MAX)
-      return (png_fixed_point)uval; /* known to be in range */
-
-   /* The caller can turn off the warning by passing NULL. */
-   if (png_ptr != NULL)
-      png_warning(png_ptr, "PNG fixed point integer out of range");
-
-   return PNG_FIXED_ERROR;
-}
-#endif
-
 #ifdef PNG_READ_INT_FUNCTIONS_SUPPORTED
 /* NOTE: the read macros will obscure these definitions, so that if
  * PNG_USE_READ_MACROS is set the library will not use them internally,
@@ -163,6 +144,38 @@
       png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
 }
 
+/* This function is called to verify that a chunk name is valid.
+ * Do this using the bit-whacking approach from contrib/tools/pngfix.c
+ *
+ * Copied from libpng 1.7.
+ */
+static int
+check_chunk_name(png_uint_32 name)
+{
+   png_uint_32 t;
+
+   /* Remove bit 5 from all but the reserved byte; this means
+    * every 8-bit unit must be in the range 65-90 to be valid.
+    * So bit 5 must be zero, bit 6 must be set and bit 7 zero.
+    */
+   name &= ~PNG_U32(32,32,0,32);
+   t = (name & ~0x1f1f1f1fU) ^ 0x40404040U;
+
+   /* Subtract 65 for each 8-bit quantity, this must not
+    * overflow and each byte must then be in the range 0-25.
+    */
+   name -= PNG_U32(65,65,65,65);
+   t |= name;
+
+   /* Subtract 26, handling the overflow which should set the
+    * top three bits of each byte.
+    */
+   name -= PNG_U32(25,25,25,26);
+   t |= ~name;
+
+   return (t & 0xe0e0e0e0U) == 0U;
+}
+
 /* Read the chunk header (length + type name).
  * Put the type name into png_ptr->chunk_name, and return the length.
  */
@@ -170,34 +183,37 @@
 png_read_chunk_header(png_structrp png_ptr)
 {
    png_byte buf[8];
-   png_uint_32 length;
+   png_uint_32 chunk_name, length;
 
 #ifdef PNG_IO_STATE_SUPPORTED
    png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_HDR;
 #endif
 
-   /* Read the length and the chunk name.
-    * This must be performed in a single I/O call.
+   /* Read the length and the chunk name.  png_struct::chunk_name is immediately
+    * updated even if they are detectably wrong.  This aids error message
+    * handling by allowing png_chunk_error to be used.
     */
    png_read_data(png_ptr, buf, 8);
    length = png_get_uint_31(png_ptr, buf);
+   png_ptr->chunk_name = chunk_name = PNG_CHUNK_FROM_STRING(buf+4);
 
-   /* Put the chunk name into png_ptr->chunk_name. */
-   png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(buf+4);
+   /* Reset the crc and run it over the chunk name. */
+   png_reset_crc(png_ptr);
+   png_calculate_crc(png_ptr, buf + 4, 4);
 
    png_debug2(0, "Reading chunk typeid = 0x%lx, length = %lu",
        (unsigned long)png_ptr->chunk_name, (unsigned long)length);
 
-   /* Reset the crc and run it over the chunk name. */
-   png_reset_crc(png_ptr);
-   png_calculate_crc(png_ptr, buf + 4, 4);
+   /* Sanity check the length (first by <= 0x80) and the chunk name.  An error
+    * here indicates a broken stream and libpng has no recovery from this.
+    */
+   if (buf[0] >= 0x80U)
+      png_chunk_error(png_ptr, "bad header (invalid length)");
 
    /* Check to see if chunk name is valid. */
-   png_check_chunk_name(png_ptr, png_ptr->chunk_name);
+   if (!check_chunk_name(chunk_name))
+      png_chunk_error(png_ptr, "bad header (invalid type)");
 
-   /* Check for too-large chunk length */
-   png_check_chunk_length(png_ptr, length);
-
 #ifdef PNG_IO_STATE_SUPPORTED
    png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA;
 #endif
@@ -216,13 +232,85 @@
    png_calculate_crc(png_ptr, buf, length);
 }
 
+/* Compare the CRC stored in the PNG file with that calculated by libpng from
+ * the data it has read thus far.
+ */
+static int
+png_crc_error(png_structrp png_ptr, int handle_as_ancillary)
+{
+   png_byte crc_bytes[4];
+   png_uint_32 crc;
+   int need_crc = 1;
+
+   /* There are four flags two for ancillary and two for critical chunks.  The
+    * default setting of these flags is all zero.
+    *
+    * PNG_FLAG_CRC_ANCILLARY_USE
+    * PNG_FLAG_CRC_ANCILLARY_NOWARN
+    *  USE+NOWARN: no CRC calculation (implemented here), else;
+    *  NOWARN:     png_chunk_error on error (implemented in png_crc_finish)
+    *  else:       png_chunk_warning on error (implemented in png_crc_finish)
+    *              This is the default.
+    *
+    *    I.e. NOWARN without USE produces png_chunk_error.  The default setting
+    *    where neither are set does the same thing.
+    *
+    * PNG_FLAG_CRC_CRITICAL_USE
+    * PNG_FLAG_CRC_CRITICAL_IGNORE
+    *  IGNORE: no CRC calculation (implemented here), else;
+    *  USE:    png_chunk_warning on error (implemented in png_crc_finish)
+    *  else:   png_chunk_error on error (implemented in png_crc_finish)
+    *          This is the default.
+    *
+    * This arose because of original mis-implementation and has persisted for
+    * compatibility reasons.
+    *
+    * TODO: the flag names are internal so maybe this can be changed to
+    * something comprehensible.
+    */
+   if (handle_as_ancillary || PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) != 0)
+   {
+      if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) ==
+          (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN))
+         need_crc = 0;
+   }
+
+   else /* critical */
+   {
+      if ((png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) != 0)
+         need_crc = 0;
+   }
+
+#ifdef PNG_IO_STATE_SUPPORTED
+   png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_CRC;
+#endif
+
+   /* The chunk CRC must be serialized in a single I/O call. */
+   png_read_data(png_ptr, crc_bytes, 4);
+
+   if (need_crc != 0)
+   {
+      crc = png_get_uint_32(crc_bytes);
+      return crc != png_ptr->crc;
+   }
+
+   else
+      return 0;
+}
+
 /* Optionally skip data and then check the CRC.  Depending on whether we
  * are reading an ancillary or critical chunk, and how the program has set
  * things up, we may calculate the CRC on the data and print a message.
  * Returns '1' if there was a CRC error, '0' otherwise.
+ *
+ * There is one public version which is used in most places and another which
+ * takes the value for the 'critical' flag to check.  This allows PLTE and IEND
+ * handling code to ignore the CRC error and removes some confusing code
+ * duplication.
  */
-int /* PRIVATE */
-png_crc_finish(png_structrp png_ptr, png_uint_32 skip)
+static int
+png_crc_finish_critical(png_structrp png_ptr, png_uint_32 skip,
+      int handle_as_ancillary)
 {
    /* The size of the local buffer for inflate is a good guess as to a
     * reasonable size to use for buffering reads from the application.
@@ -240,14 +328,24 @@
       png_crc_read(png_ptr, tmpbuf, len);
    }
 
-   if (png_crc_error(png_ptr) != 0)
+   /* If 'handle_as_ancillary' has been requested and this is a critical chunk
+    * but PNG_FLAG_CRC_CRITICAL_IGNORE was set then png_read_crc did not, in
+    * fact, calculate the CRC so the ANCILLARY settings should not be used
+    * instead.
+    */
+   if (handle_as_ancillary &&
+       (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) != 0)
+      handle_as_ancillary = 0;
+
+   /* TODO: this might be more comprehensible if png_crc_error was inlined here.
+    */
+   if (png_crc_error(png_ptr, handle_as_ancillary) != 0)
    {
-      if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) != 0 ?
+      /* See above for the explanation of how the flags work. */
+      if (handle_as_ancillary || PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) != 0 ?
           (png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) == 0 :
           (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE) != 0)
-      {
          png_chunk_warning(png_ptr, "CRC error");
-      }
 
       else
          png_chunk_error(png_ptr, "CRC error");
@@ -258,61 +356,29 @@
    return 0;
 }
 
-/* Compare the CRC stored in the PNG file with that calculated by libpng from
- * the data it has read thus far.
- */
 int /* PRIVATE */
-png_crc_error(png_structrp png_ptr)
+png_crc_finish(png_structrp png_ptr, png_uint_32 skip)
 {
-   png_byte crc_bytes[4];
-   png_uint_32 crc;
-   int need_crc = 1;
-
-   if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) != 0)
-   {
-      if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) ==
-          (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN))
-         need_crc = 0;
-   }
-
-   else /* critical */
-   {
-      if ((png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) != 0)
-         need_crc = 0;
-   }
-
-#ifdef PNG_IO_STATE_SUPPORTED
-   png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_CRC;
-#endif
-
-   /* The chunk CRC must be serialized in a single I/O call. */
-   png_read_data(png_ptr, crc_bytes, 4);
-
-   if (need_crc != 0)
-   {
-      crc = png_get_uint_32(crc_bytes);
-      return crc != png_ptr->crc;
-   }
-
-   else
-      return 0;
+   return png_crc_finish_critical(png_ptr, skip, 0/*critical handling*/);
 }
 
 #if defined(PNG_READ_iCCP_SUPPORTED) || defined(PNG_READ_iTXt_SUPPORTED) ||\
     defined(PNG_READ_pCAL_SUPPORTED) || defined(PNG_READ_sCAL_SUPPORTED) ||\
     defined(PNG_READ_sPLT_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) ||\
-    defined(PNG_READ_zTXt_SUPPORTED) || defined(PNG_SEQUENTIAL_READ_SUPPORTED)
+    defined(PNG_READ_zTXt_SUPPORTED) || defined(PNG_READ_eXIf_SUPPORTED) ||\
+    defined(PNG_SEQUENTIAL_READ_SUPPORTED)
 /* Manage the read buffer; this simply reallocates the buffer if it is not small
  * enough (or if it is not allocated).  The routine returns a pointer to the
  * buffer; if an error occurs and 'warn' is set the routine returns NULL, else
- * it will call png_error (via png_malloc) on failure.  (warn == 2 means
- * 'silent').
+ * it will call png_error on failure.
  */
 static png_bytep
-png_read_buffer(png_structrp png_ptr, png_alloc_size_t new_size, int warn)
+png_read_buffer(png_structrp png_ptr, png_alloc_size_t new_size)
 {
    png_bytep buffer = png_ptr->read_buffer;
 
+   if (new_size > png_chunk_max(png_ptr)) return NULL;
+
    if (buffer != NULL && new_size > png_ptr->read_buffer_size)
    {
       png_ptr->read_buffer = NULL;
@@ -327,24 +393,17 @@
 
       if (buffer != NULL)
       {
-         memset(buffer, 0, new_size); /* just in case */
+#        ifndef PNG_NO_MEMZERO /* for detecting UIM bugs **only** */
+            memset(buffer, 0, new_size); /* just in case */
+#        endif
          png_ptr->read_buffer = buffer;
          png_ptr->read_buffer_size = new_size;
       }
-
-      else if (warn < 2) /* else silent */
-      {
-         if (warn != 0)
-             png_chunk_warning(png_ptr, "insufficient memory to read chunk");
-
-         else
-             png_chunk_error(png_ptr, "insufficient memory to read chunk");
-      }
    }
 
    return buffer;
 }
-#endif /* READ_iCCP|iTXt|pCAL|sCAL|sPLT|tEXt|zTXt|SEQUENTIAL_READ */
+#endif /* READ_iCCP|iTXt|pCAL|sCAL|sPLT|tEXt|zTXt|eXIf|SEQUENTIAL_READ */
 
 /* png_inflate_claim: claim the zstream for some nefarious purpose that involves
  * decompression.  Returns Z_OK on success, else a zlib error code.  It checks
@@ -631,17 +690,8 @@
     * maybe a '\0' terminator too.  We have to assume that 'prefix_size' is
     * limited only by the maximum chunk size.
     */
-   png_alloc_size_t limit = PNG_SIZE_MAX;
+   png_alloc_size_t limit = png_chunk_max(png_ptr);
 
-# ifdef PNG_SET_USER_LIMITS_SUPPORTED
-   if (png_ptr->user_chunk_malloc_max > 0 &&
-       png_ptr->user_chunk_malloc_max < limit)
-      limit = png_ptr->user_chunk_malloc_max;
-# elif PNG_USER_CHUNK_MALLOC_MAX > 0
-   if (PNG_USER_CHUNK_MALLOC_MAX < limit)
-      limit = PNG_USER_CHUNK_MALLOC_MAX;
-# endif
-
    if (limit >= prefix_size + (terminate != 0))
    {
       int ret;
@@ -845,9 +895,9 @@
 }
 #endif /* READ_iCCP */
 
+/* CHUNK HANDLING */
 /* Read and check the IDHR chunk */
-
-void /* PRIVATE */
+static png_handle_result_code
 png_handle_IHDR(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_byte buf[13];
@@ -857,13 +907,8 @@
 
    png_debug(1, "in png_handle_IHDR");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) != 0)
-      png_chunk_error(png_ptr, "out of place");
+   /* Length and position are checked by the caller. */
 
-   /* Check the length */
-   if (length != 13)
-      png_chunk_error(png_ptr, "invalid");
-
    png_ptr->mode |= PNG_HAVE_IHDR;
 
    png_crc_read(png_ptr, buf, 13);
@@ -916,257 +961,196 @@
    png_debug1(3, "bit_depth = %d", png_ptr->bit_depth);
    png_debug1(3, "channels = %d", png_ptr->channels);
    png_debug1(3, "rowbytes = %lu", (unsigned long)png_ptr->rowbytes);
+
+   /* Rely on png_set_IHDR to completely validate the data and call png_error if
+    * it's wrong.
+    */
    png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth,
        color_type, interlace_type, compression_type, filter_type);
+
+   return handled_ok;
+   PNG_UNUSED(length)
 }
 
 /* Read and check the palette */
-void /* PRIVATE */
+/* TODO: there are several obvious errors in this code when handling
+ * out-of-place chunks and there is much over-complexity caused by trying to
+ * patch up the problems.
+ */
+static png_handle_result_code
 png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
-   png_color palette[PNG_MAX_PALETTE_LENGTH];
-   int max_palette_length, num, i;
-#ifdef PNG_POINTER_INDEXING_SUPPORTED
-   png_colorp pal_ptr;
-#endif
+   png_const_charp errmsg = NULL;
 
    png_debug(1, "in png_handle_PLTE");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   /* Moved to before the 'after IDAT' check below because otherwise duplicate
-    * PLTE chunks are potentially ignored (the spec says there shall not be more
-    * than one PLTE, the error is not treated as benign, so this check trumps
-    * the requirement that PLTE appears before IDAT.)
+   /* 1.6.47: consistency.  This used to be especially treated as a critical
+    * error even in an image which is not colour mapped, there isn't a good
+    * justification for treating some errors here one way and others another so
+    * everything uses the same logic.
     */
-   else if ((png_ptr->mode & PNG_HAVE_PLTE) != 0)
-      png_chunk_error(png_ptr, "duplicate");
+   if ((png_ptr->mode & PNG_HAVE_PLTE) != 0)
+      errmsg = "duplicate";
 
    else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
-   {
-      /* This is benign because the non-benign error happened before, when an
-       * IDAT was encountered in a color-mapped image with no PLTE.
-       */
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
+      errmsg = "out of place";
 
-   png_ptr->mode |= PNG_HAVE_PLTE;
+   else if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0)
+      errmsg = "ignored in grayscale PNG";
 
-   if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "ignored in grayscale PNG");
-      return;
-   }
+   else if (length > 3*PNG_MAX_PALETTE_LENGTH || (length % 3) != 0)
+      errmsg = "invalid";
 
-#ifndef PNG_READ_OPT_PLTE_SUPPORTED
-   if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
-   {
-      png_crc_finish(png_ptr, length);
-      return;
-   }
-#endif
+   /* This drops PLTE in favour of tRNS or bKGD because both of those chunks
+    * can have an effect on the rendering of the image whereas PLTE only matters
+    * in the case of an 8-bit display with a decoder which controls the palette.
+    *
+    * The alternative here is to ignore the error and store the palette anyway;
+    * destroying the tRNS will definately cause problems.
+    *
+    * NOTE: the case of PNG_COLOR_TYPE_PALETTE need not be considered because
+    * the png_handle_ routines for the three 'after PLTE' chunks tRNS, bKGD and
+    * hIST all check for a preceding PLTE in these cases.
+    */
+   else if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE &&
+            (png_has_chunk(png_ptr, tRNS) || png_has_chunk(png_ptr, bKGD)))
+      errmsg = "out of place";
 
-   if (length > 3*PNG_MAX_PALETTE_LENGTH || length % 3)
+   else
    {
-      png_crc_finish(png_ptr, length);
+      /* If the palette has 256 or fewer entries but is too large for the bit
+       * depth we don't issue an error to preserve the behavior of previous
+       * libpng versions. We silently truncate the unused extra palette entries
+       * here.
+       */
+      const unsigned max_palette_length =
+         (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ?
+            1U << png_ptr->bit_depth : PNG_MAX_PALETTE_LENGTH;
 
-      if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
-         png_chunk_benign_error(png_ptr, "invalid");
+      /* The cast is safe because 'length' is less than
+       * 3*PNG_MAX_PALETTE_LENGTH
+       */
+      const unsigned num = (length > 3U*max_palette_length) ?
+         max_palette_length : (unsigned)length / 3U;
 
-      else
-         png_chunk_error(png_ptr, "invalid");
+      unsigned i, j;
+      png_byte buf[3*PNG_MAX_PALETTE_LENGTH];
+      png_color palette[PNG_MAX_PALETTE_LENGTH];
 
-      return;
-   }
+      /* Read the chunk into the buffer then read to the end of the chunk. */
+      png_crc_read(png_ptr, buf, num*3U);
+      png_crc_finish_critical(png_ptr, length - 3U*num,
+            /* Handle as ancillary if PLTE is optional: */
+            png_ptr->color_type != PNG_COLOR_TYPE_PALETTE);
 
-   /* The cast is safe because 'length' is less than 3*PNG_MAX_PALETTE_LENGTH */
-   num = (int)length / 3;
+      for (i = 0U, j = 0U; i < num; i++)
+      {
+         palette[i].red = buf[j++];
+         palette[i].green = buf[j++];
+         palette[i].blue = buf[j++];
+      }
 
-   /* If the palette has 256 or fewer entries but is too large for the bit
-    * depth, we don't issue an error, to preserve the behavior of previous
-    * libpng versions. We silently truncate the unused extra palette entries
-    * here.
-    */
-   if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-      max_palette_length = (1 << png_ptr->bit_depth);
-   else
-      max_palette_length = PNG_MAX_PALETTE_LENGTH;
+      /* A valid PLTE chunk has been read */
+      png_ptr->mode |= PNG_HAVE_PLTE;
 
-   if (num > max_palette_length)
-      num = max_palette_length;
-
-#ifdef PNG_POINTER_INDEXING_SUPPORTED
-   for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++)
-   {
-      png_byte buf[3];
-
-      png_crc_read(png_ptr, buf, 3);
-      pal_ptr->red = buf[0];
-      pal_ptr->green = buf[1];
-      pal_ptr->blue = buf[2];
+      /* TODO: png_set_PLTE has the side effect of setting png_ptr->palette to
+       * its own copy of the palette.  This has the side effect that when
+       * png_start_row is called (this happens after any call to
+       * png_read_update_info) the info_ptr palette gets changed.  This is
+       * extremely unexpected and confusing.
+       *
+       * REVIEW: there have been consistent bugs in the past about gamma and
+       * similar transforms to colour mapped images being useless because the
+       * modified palette cannot be accessed because of the above.
+       *
+       * CONSIDER: Fix this by not sharing the palette in this way.  But does
+       * this completely fix the problem?
+       */
+      png_set_PLTE(png_ptr, info_ptr, palette, num);
+      return handled_ok;
    }
-#else
-   for (i = 0; i < num; i++)
-   {
-      png_byte buf[3];
 
-      png_crc_read(png_ptr, buf, 3);
-      /* Don't depend upon png_color being any order */
-      palette[i].red = buf[0];
-      palette[i].green = buf[1];
-      palette[i].blue = buf[2];
-   }
-#endif
-
-   /* If we actually need the PLTE chunk (ie for a paletted image), we do
-    * whatever the normal CRC configuration tells us.  However, if we
-    * have an RGB image, the PLTE can be considered ancillary, so
-    * we will act as though it is.
-    */
-#ifndef PNG_READ_OPT_PLTE_SUPPORTED
+   /* Here on error: errmsg is non NULL. */
    if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-#endif
    {
-      png_crc_finish(png_ptr, (png_uint_32) (length - (unsigned int)num * 3));
+      png_crc_finish(png_ptr, length);
+      png_chunk_error(png_ptr, errmsg);
    }
 
-#ifndef PNG_READ_OPT_PLTE_SUPPORTED
-   else if (png_crc_error(png_ptr) != 0)  /* Only if we have a CRC error */
+   else /* not critical to this image */
    {
-      /* If we don't want to use the data from an ancillary chunk,
-       * we have two options: an error abort, or a warning and we
-       * ignore the data in this chunk (which should be OK, since
-       * it's considered ancillary for a RGB or RGBA image).
-       *
-       * IMPLEMENTATION NOTE: this is only here because png_crc_finish uses the
-       * chunk type to determine whether to check the ancillary or the critical
-       * flags.
-       */
-      if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_USE) == 0)
-      {
-         if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) != 0)
-            return;
-
-         else
-            png_chunk_error(png_ptr, "CRC error");
-      }
-
-      /* Otherwise, we (optionally) emit a warning and use the chunk. */
-      else if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) == 0)
-         png_chunk_warning(png_ptr, "CRC error");
+      png_crc_finish_critical(png_ptr, length, 1/*handle as ancillary*/);
+      png_chunk_benign_error(png_ptr, errmsg);
    }
-#endif
 
-   /* TODO: png_set_PLTE has the side effect of setting png_ptr->palette to its
-    * own copy of the palette.  This has the side effect that when png_start_row
-    * is called (this happens after any call to png_read_update_info) the
-    * info_ptr palette gets changed.  This is extremely unexpected and
-    * confusing.
-    *
-    * Fix this by not sharing the palette in this way.
+   /* Because PNG_UNUSED(errmsg) does not work if all the uses are compiled out
+    * (this does happen).
     */
-   png_set_PLTE(png_ptr, info_ptr, palette, num);
+   return errmsg != NULL ? handled_error : handled_error;
+}
 
-   /* The three chunks, bKGD, hIST and tRNS *must* appear after PLTE and before
-    * IDAT.  Prior to 1.6.0 this was not checked; instead the code merely
-    * checked the apparent validity of a tRNS chunk inserted before PLTE on a
-    * palette PNG.  1.6.0 attempts to rigorously follow the standard and
-    * therefore does a benign error if the erroneous condition is detected *and*
-    * cancels the tRNS if the benign error returns.  The alternative is to
-    * amend the standard since it would be rather hypocritical of the standards
-    * maintainers to ignore it.
-    */
-#ifdef PNG_READ_tRNS_SUPPORTED
-   if (png_ptr->num_trans > 0 ||
-       (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS) != 0))
-   {
-      /* Cancel this because otherwise it would be used if the transforms
-       * require it.  Don't cancel the 'valid' flag because this would prevent
-       * detection of duplicate chunks.
-       */
-      png_ptr->num_trans = 0;
+/* On read the IDAT chunk is always handled specially, even if marked for
+ * unknown handling (this is allowed), so:
+ */
+#define png_handle_IDAT NULL
 
-      if (info_ptr != NULL)
-         info_ptr->num_trans = 0;
-
-      png_chunk_benign_error(png_ptr, "tRNS must be after");
-   }
-#endif
-
-#ifdef PNG_READ_hIST_SUPPORTED
-   if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST) != 0)
-      png_chunk_benign_error(png_ptr, "hIST must be after");
-#endif
-
-#ifdef PNG_READ_bKGD_SUPPORTED
-   if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD) != 0)
-      png_chunk_benign_error(png_ptr, "bKGD must be after");
-#endif
-}
-
-void /* PRIVATE */
+static png_handle_result_code
 png_handle_IEND(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_debug(1, "in png_handle_IEND");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0 ||
-       (png_ptr->mode & PNG_HAVE_IDAT) == 0)
-      png_chunk_error(png_ptr, "out of place");
-
    png_ptr->mode |= (PNG_AFTER_IDAT | PNG_HAVE_IEND);
 
-   png_crc_finish(png_ptr, length);
-
    if (length != 0)
       png_chunk_benign_error(png_ptr, "invalid");
 
+   png_crc_finish_critical(png_ptr, length, 1/*handle as ancillary*/);
+
+   return handled_ok;
    PNG_UNUSED(info_ptr)
 }
 
 #ifdef PNG_READ_gAMA_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code
 png_handle_gAMA(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
-   png_fixed_point igamma;
+   png_uint_32 ugamma;
    png_byte buf[4];
 
    png_debug(1, "in png_handle_gAMA");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
+   png_crc_read(png_ptr, buf, 4);
 
-   else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
+   if (png_crc_finish(png_ptr, 0) != 0)
+      return handled_error;
 
-   if (length != 4)
+   ugamma = png_get_uint_32(buf);
+
+   if (ugamma > PNG_UINT_31_MAX)
    {
-      png_crc_finish(png_ptr, length);
       png_chunk_benign_error(png_ptr, "invalid");
-      return;
+      return handled_error;
    }
 
-   png_crc_read(png_ptr, buf, 4);
+   png_set_gAMA_fixed(png_ptr, info_ptr, (png_fixed_point)/*SAFE*/ugamma);
 
-   if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+#ifdef PNG_READ_GAMMA_SUPPORTED
+      /* PNGv3: chunk precedence for gamma is cICP, [iCCP], sRGB, gAMA.  gAMA is
+       * at the end of the chain so simply check for an unset value.
+       */
+      if (png_ptr->chunk_gamma == 0)
+         png_ptr->chunk_gamma = (png_fixed_point)/*SAFE*/ugamma;
+#endif /*READ_GAMMA*/
 
-   igamma = png_get_fixed_point(NULL, buf);
-
-   png_colorspace_set_gamma(png_ptr, &png_ptr->colorspace, igamma);
-   png_colorspace_sync(png_ptr, info_ptr);
+   return handled_ok;
+   PNG_UNUSED(length)
 }
+#else
+#  define png_handle_gAMA NULL
 #endif
 
 #ifdef PNG_READ_sBIT_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_sBIT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    unsigned int truelen, i;
@@ -1175,23 +1159,6 @@
 
    png_debug(1, "in png_handle_sBIT");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
-
-   if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
-
    if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
    {
       truelen = 3;
@@ -1204,11 +1171,11 @@
       sample_depth = png_ptr->bit_depth;
    }
 
-   if (length != truelen || length > 4)
+   if (length != truelen)
    {
-      png_chunk_benign_error(png_ptr, "invalid");
       png_crc_finish(png_ptr, length);
-      return;
+      png_chunk_benign_error(png_ptr, "bad length");
+      return handled_error;
    }
 
    buf[0] = buf[1] = buf[2] = buf[3] = sample_depth;
@@ -1215,7 +1182,7 @@
    png_crc_read(png_ptr, buf, truelen);
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
    for (i=0; i<truelen; ++i)
    {
@@ -1222,7 +1189,7 @@
       if (buf[i] == 0 || buf[i] > sample_depth)
       {
          png_chunk_benign_error(png_ptr, "invalid");
-         return;
+         return handled_error;
       }
    }
 
@@ -1234,7 +1201,7 @@
       png_ptr->sig_bit.alpha = buf[3];
    }
 
-   else
+   else /* grayscale */
    {
       png_ptr->sig_bit.gray = buf[0];
       png_ptr->sig_bit.red = buf[0];
@@ -1244,83 +1211,87 @@
    }
 
    png_set_sBIT(png_ptr, info_ptr, &(png_ptr->sig_bit));
+   return handled_ok;
 }
+#else
+#  define png_handle_sBIT NULL
 #endif
 
 #ifdef PNG_READ_cHRM_SUPPORTED
-void /* PRIVATE */
+static png_int_32
+png_get_int_32_checked(png_const_bytep buf, int *error)
+{
+   png_uint_32 uval = png_get_uint_32(buf);
+   if ((uval & 0x80000000) == 0) /* non-negative */
+      return (png_int_32)uval;
+
+   uval = (uval ^ 0xffffffff) + 1;  /* 2's complement: -x = ~x+1 */
+   if ((uval & 0x80000000) == 0) /* no overflow */
+      return -(png_int_32)uval;
+
+   /* This version of png_get_int_32 has a way of returning the error to the
+    * caller, so:
+    */
+   *error = 1;
+   return 0; /* Safe */
+}
+
+static png_handle_result_code /* PRIVATE */
 png_handle_cHRM(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
+   int error = 0;
+   png_xy xy;
    png_byte buf[32];
-   png_xy xy;
 
    png_debug(1, "in png_handle_cHRM");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
-
-   if (length != 32)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "invalid");
-      return;
-   }
-
    png_crc_read(png_ptr, buf, 32);
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
-   xy.whitex = png_get_fixed_point(NULL, buf);
-   xy.whitey = png_get_fixed_point(NULL, buf + 4);
-   xy.redx   = png_get_fixed_point(NULL, buf + 8);
-   xy.redy   = png_get_fixed_point(NULL, buf + 12);
-   xy.greenx = png_get_fixed_point(NULL, buf + 16);
-   xy.greeny = png_get_fixed_point(NULL, buf + 20);
-   xy.bluex  = png_get_fixed_point(NULL, buf + 24);
-   xy.bluey  = png_get_fixed_point(NULL, buf + 28);
+   xy.whitex = png_get_int_32_checked(buf +  0, &error);
+   xy.whitey = png_get_int_32_checked(buf +  4, &error);
+   xy.redx   = png_get_int_32_checked(buf +  8, &error);
+   xy.redy   = png_get_int_32_checked(buf + 12, &error);
+   xy.greenx = png_get_int_32_checked(buf + 16, &error);
+   xy.greeny = png_get_int_32_checked(buf + 20, &error);
+   xy.bluex  = png_get_int_32_checked(buf + 24, &error);
+   xy.bluey  = png_get_int_32_checked(buf + 28, &error);
 
-   if (xy.whitex == PNG_FIXED_ERROR ||
-       xy.whitey == PNG_FIXED_ERROR ||
-       xy.redx   == PNG_FIXED_ERROR ||
-       xy.redy   == PNG_FIXED_ERROR ||
-       xy.greenx == PNG_FIXED_ERROR ||
-       xy.greeny == PNG_FIXED_ERROR ||
-       xy.bluex  == PNG_FIXED_ERROR ||
-       xy.bluey  == PNG_FIXED_ERROR)
+   if (error)
    {
-      png_chunk_benign_error(png_ptr, "invalid values");
-      return;
+      png_chunk_benign_error(png_ptr, "invalid");
+      return handled_error;
    }
 
-   /* If a colorspace error has already been output skip this chunk */
-   if ((png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0)
-      return;
+   /* png_set_cHRM may complain about some of the values but this doesn't matter
+    * because it was a cHRM and it did have vaguely (if, perhaps, ridiculous)
+    * values.  Ridiculousity will be checked if the values are used later.
+    */
+   png_set_cHRM_fixed(png_ptr, info_ptr, xy.whitex, xy.whitey, xy.redx, xy.redy,
+         xy.greenx, xy.greeny, xy.bluex, xy.bluey);
 
-   if ((png_ptr->colorspace.flags & PNG_COLORSPACE_FROM_cHRM) != 0)
-   {
-      png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID;
-      png_colorspace_sync(png_ptr, info_ptr);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
+   /* We only use 'chromaticities' for RGB to gray */
+#  ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+      /* There is no need to check sRGB here, cICP is NYI and iCCP is not
+       * supported so just check mDCV.
+       */
+      if (!png_has_chunk(png_ptr, mDCV))
+      {
+         png_ptr->chromaticities = xy;
+      }
+#  endif /* READ_RGB_TO_GRAY */
 
-   png_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM;
-   (void)png_colorspace_set_chromaticities(png_ptr, &png_ptr->colorspace, &xy,
-       1/*prefer cHRM values*/);
-   png_colorspace_sync(png_ptr, info_ptr);
+   return handled_ok;
+   PNG_UNUSED(length)
 }
+#else
+#  define png_handle_cHRM NULL
 #endif
 
 #ifdef PNG_READ_sRGB_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_sRGB(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_byte intent;
@@ -1327,50 +1298,45 @@
 
    png_debug(1, "in png_handle_sRGB");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
+   png_crc_read(png_ptr, &intent, 1);
 
-   else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
+   if (png_crc_finish(png_ptr, 0) != 0)
+      return handled_error;
 
-   if (length != 1)
+   /* This checks the range of the "rendering intent" because it is specified in
+    * the PNG spec itself; the "reserved" values will result in the chunk not
+    * being accepted, just as they do with the various "reserved" values in
+    * IHDR.
+    */
+   if (intent > 3/*PNGv3 spec*/)
    {
-      png_crc_finish(png_ptr, length);
       png_chunk_benign_error(png_ptr, "invalid");
-      return;
+      return handled_error;
    }
 
-   png_crc_read(png_ptr, &intent, 1);
+   png_set_sRGB(png_ptr, info_ptr, intent);
+   /* NOTE: png_struct::chromaticities is not set here because the RGB to gray
+    * coefficients are known without a need for the chromaticities.
+    */
 
-   if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+#ifdef PNG_READ_GAMMA_SUPPORTED
+      /* PNGv3: chunk precedence for gamma is cICP, [iCCP], sRGB, gAMA.  iCCP is
+       * not supported by libpng so the only requirement is to check for cICP
+       * setting the gamma (this is NYI, but this check is safe.)
+       */
+      if (!png_has_chunk(png_ptr, cICP) || png_ptr->chunk_gamma == 0)
+         png_ptr->chunk_gamma = PNG_GAMMA_sRGB_INVERSE;
+#endif /*READ_GAMMA*/
 
-   /* If a colorspace error has already been output skip this chunk */
-   if ((png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0)
-      return;
-
-   /* Only one sRGB or iCCP chunk is allowed, use the HAVE_INTENT flag to detect
-    * this.
-    */
-   if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT) != 0)
-   {
-      png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID;
-      png_colorspace_sync(png_ptr, info_ptr);
-      png_chunk_benign_error(png_ptr, "too many profiles");
-      return;
-   }
-
-   (void)png_colorspace_set_sRGB(png_ptr, &png_ptr->colorspace, intent);
-   png_colorspace_sync(png_ptr, info_ptr);
+   return handled_ok;
+   PNG_UNUSED(length)
 }
+#else
+#  define png_handle_sRGB NULL
 #endif /* READ_sRGB */
 
 #ifdef PNG_READ_iCCP_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 /* Note: this does not properly handle profiles that are > 64K under DOS */
 {
@@ -1379,45 +1345,11 @@
 
    png_debug(1, "in png_handle_iCCP");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
-
-   /* Consistent with all the above colorspace handling an obviously *invalid*
-    * chunk is just ignored, so does not invalidate the color space.  An
-    * alternative is to set the 'invalid' flags at the start of this routine
-    * and only clear them in they were not set before and all the tests pass.
+   /* PNGv3: allow PNG files with both sRGB and iCCP because the PNG spec only
+    * ever said that there "should" be only one, not "shall" and the PNGv3
+    * colour chunk precedence rules give a handling for this case anyway.
     */
-
-   /* The keyword must be at least one character and there is a
-    * terminator (0) byte and the compression method byte, and the
-    * 'zlib' datastream is at least 11 bytes.
-    */
-   if (length < 14)
    {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "too short");
-      return;
-   }
-
-   /* If a colorspace error has already been output skip this chunk */
-   if ((png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      return;
-   }
-
-   /* Only one sRGB or iCCP chunk is allowed, use the HAVE_INTENT flag to detect
-    * this.
-    */
-   if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT) == 0)
-   {
       uInt read_length, keyword_length;
       char keyword[81];
 
@@ -1426,19 +1358,16 @@
        */
       read_length = 81; /* maximum */
       if (read_length > length)
-         read_length = (uInt)length;
+         read_length = (uInt)/*SAFE*/length;
 
       png_crc_read(png_ptr, (png_bytep)keyword, read_length);
       length -= read_length;
 
-      /* The minimum 'zlib' stream is assumed to be just the 2 byte header,
-       * 5 bytes minimum 'deflate' stream, and the 4 byte checksum.
-       */
-      if (length < 11)
+      if (length < LZ77Min)
       {
          png_crc_finish(png_ptr, length);
          png_chunk_benign_error(png_ptr, "too short");
-         return;
+         return handled_error;
       }
 
       keyword_length = 0;
@@ -1475,15 +1404,14 @@
                    */
                   png_uint_32 profile_length = png_get_uint_32(profile_header);
 
-                  if (png_icc_check_length(png_ptr, &png_ptr->colorspace,
-                      keyword, profile_length) != 0)
+                  if (png_icc_check_length(png_ptr, keyword, profile_length) !=
+                      0)
                   {
                      /* The length is apparently ok, so we can check the 132
                       * byte header.
                       */
-                     if (png_icc_check_header(png_ptr, &png_ptr->colorspace,
-                         keyword, profile_length, profile_header,
-                         png_ptr->color_type) != 0)
+                     if (png_icc_check_header(png_ptr, keyword, profile_length,
+                              profile_header, png_ptr->color_type) != 0)
                      {
                         /* Now read the tag table; a variable size buffer is
                          * needed at this point, allocate one for the whole
@@ -1493,7 +1421,7 @@
                         png_uint_32 tag_count =
                            png_get_uint_32(profile_header + 128);
                         png_bytep profile = png_read_buffer(png_ptr,
-                            profile_length, 2/*silent*/);
+                              profile_length);
 
                         if (profile != NULL)
                         {
@@ -1512,8 +1440,7 @@
                            if (size == 0)
                            {
                               if (png_icc_check_tag_table(png_ptr,
-                                  &png_ptr->colorspace, keyword, profile_length,
-                                  profile) != 0)
+                                       keyword, profile_length, profile) != 0)
                               {
                                  /* The profile has been validated for basic
                                   * security issues, so read the whole thing in.
@@ -1545,13 +1472,6 @@
                                     png_crc_finish(png_ptr, length);
                                     finished = 1;
 
-# if defined(PNG_sRGB_SUPPORTED) && PNG_sRGB_PROFILE_CHECKS >= 0
-                                    /* Check for a match against sRGB */
-                                    png_icc_set_sRGB(png_ptr,
-                                        &png_ptr->colorspace, profile,
-                                        png_ptr->zstream.adler);
-# endif
-
                                     /* Steal the profile for info_ptr. */
                                     if (info_ptr != NULL)
                                     {
@@ -1574,11 +1494,7 @@
                                        }
 
                                        else
-                                       {
-                                          png_ptr->colorspace.flags |=
-                                             PNG_COLORSPACE_INVALID;
                                           errmsg = "out of memory";
-                                       }
                                     }
 
                                     /* else the profile remains in the read
@@ -1586,13 +1502,10 @@
                                      * chunks.
                                      */
 
-                                    if (info_ptr != NULL)
-                                       png_colorspace_sync(png_ptr, info_ptr);
-
                                     if (errmsg == NULL)
                                     {
                                        png_ptr->zowner = 0;
-                                       return;
+                                       return handled_ok;
                                     }
                                  }
                                  if (errmsg == NULL)
@@ -1633,22 +1546,21 @@
          errmsg = "bad keyword";
    }
 
-   else
-      errmsg = "too many profiles";
-
    /* Failure: the reason is in 'errmsg' */
    if (finished == 0)
       png_crc_finish(png_ptr, length);
 
-   png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID;
-   png_colorspace_sync(png_ptr, info_ptr);
    if (errmsg != NULL) /* else already output */
       png_chunk_benign_error(png_ptr, errmsg);
+
+   return handled_error;
 }
+#else
+#  define png_handle_iCCP NULL
 #endif /* READ_iCCP */
 
 #ifdef PNG_READ_sPLT_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_sPLT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 /* Note: this does not properly handle chunks that are > 64K under DOS */
 {
@@ -1669,7 +1581,7 @@
       if (png_ptr->user_chunk_cache_max == 1)
       {
          png_crc_finish(png_ptr, length);
-         return;
+         return handled_error;
       }
 
       if (--png_ptr->user_chunk_cache_max == 1)
@@ -1676,36 +1588,17 @@
       {
          png_warning(png_ptr, "No space in chunk cache for sPLT");
          png_crc_finish(png_ptr, length);
-         return;
+         return handled_error;
       }
    }
 #endif
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
-
-#ifdef PNG_MAX_MALLOC_64K
-   if (length > 65535U)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "too large to fit in memory");
-      return;
-   }
-#endif
-
-   buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/);
+   buffer = png_read_buffer(png_ptr, length+1);
    if (buffer == NULL)
    {
       png_crc_finish(png_ptr, length);
       png_chunk_benign_error(png_ptr, "out of memory");
-      return;
+      return handled_error;
    }
 
 
@@ -1716,7 +1609,7 @@
    png_crc_read(png_ptr, buffer, length);
 
    if (png_crc_finish(png_ptr, skip) != 0)
-      return;
+      return handled_error;
 
    buffer[length] = 0;
 
@@ -1729,7 +1622,7 @@
    if (length < 2U || entry_start > buffer + (length - 2U))
    {
       png_warning(png_ptr, "malformed sPLT chunk");
-      return;
+      return handled_error;
    }
 
    new_palette.depth = *entry_start++;
@@ -1743,7 +1636,7 @@
    if ((data_length % (unsigned int)entry_size) != 0)
    {
       png_warning(png_ptr, "sPLT chunk has bad length");
-      return;
+      return handled_error;
    }
 
    dl = (png_uint_32)(data_length / (unsigned int)entry_size);
@@ -1752,7 +1645,7 @@
    if (dl > max_dl)
    {
       png_warning(png_ptr, "sPLT chunk too long");
-      return;
+      return handled_error;
    }
 
    new_palette.nentries = (png_int_32)(data_length / (unsigned int)entry_size);
@@ -1763,10 +1656,9 @@
    if (new_palette.entries == NULL)
    {
       png_warning(png_ptr, "sPLT chunk requires too much memory");
-      return;
+      return handled_error;
    }
 
-#ifdef PNG_POINTER_INDEXING_SUPPORTED
    for (i = 0; i < new_palette.nentries; i++)
    {
       pp = new_palette.entries + i;
@@ -1789,32 +1681,7 @@
 
       pp->frequency = png_get_uint_16(entry_start); entry_start += 2;
    }
-#else
-   pp = new_palette.entries;
 
-   for (i = 0; i < new_palette.nentries; i++)
-   {
-
-      if (new_palette.depth == 8)
-      {
-         pp[i].red   = *entry_start++;
-         pp[i].green = *entry_start++;
-         pp[i].blue  = *entry_start++;
-         pp[i].alpha = *entry_start++;
-      }
-
-      else
-      {
-         pp[i].red   = png_get_uint_16(entry_start); entry_start += 2;
-         pp[i].green = png_get_uint_16(entry_start); entry_start += 2;
-         pp[i].blue  = png_get_uint_16(entry_start); entry_start += 2;
-         pp[i].alpha = png_get_uint_16(entry_start); entry_start += 2;
-      }
-
-      pp[i].frequency = png_get_uint_16(entry_start); entry_start += 2;
-   }
-#endif
-
    /* Discard all chunk data except the name and stash that */
    new_palette.name = (png_charp)buffer;
 
@@ -1821,11 +1688,14 @@
    png_set_sPLT(png_ptr, info_ptr, &new_palette, 1);
 
    png_free(png_ptr, new_palette.entries);
+   return handled_ok;
 }
+#else
+#  define png_handle_sPLT NULL
 #endif /* READ_sPLT */
 
 #ifdef PNG_READ_tRNS_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_tRNS(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_byte readbuf[PNG_MAX_PALETTE_LENGTH];
@@ -1832,23 +1702,6 @@
 
    png_debug(1, "in png_handle_tRNS");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
-
-   else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
-
    if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
    {
       png_byte buf[2];
@@ -1857,7 +1710,7 @@
       {
          png_crc_finish(png_ptr, length);
          png_chunk_benign_error(png_ptr, "invalid");
-         return;
+         return handled_error;
       }
 
       png_crc_read(png_ptr, buf, 2);
@@ -1873,7 +1726,7 @@
       {
          png_crc_finish(png_ptr, length);
          png_chunk_benign_error(png_ptr, "invalid");
-         return;
+         return handled_error;
       }
 
       png_crc_read(png_ptr, buf, length);
@@ -1887,10 +1740,9 @@
    {
       if ((png_ptr->mode & PNG_HAVE_PLTE) == 0)
       {
-         /* TODO: is this actually an error in the ISO spec? */
          png_crc_finish(png_ptr, length);
          png_chunk_benign_error(png_ptr, "out of place");
-         return;
+         return handled_error;
       }
 
       if (length > (unsigned int) png_ptr->num_palette ||
@@ -1899,7 +1751,7 @@
       {
          png_crc_finish(png_ptr, length);
          png_chunk_benign_error(png_ptr, "invalid");
-         return;
+         return handled_error;
       }
 
       png_crc_read(png_ptr, readbuf, length);
@@ -1910,13 +1762,13 @@
    {
       png_crc_finish(png_ptr, length);
       png_chunk_benign_error(png_ptr, "invalid with alpha channel");
-      return;
+      return handled_error;
    }
 
    if (png_crc_finish(png_ptr, 0) != 0)
    {
       png_ptr->num_trans = 0;
-      return;
+      return handled_error;
    }
 
    /* TODO: this is a horrible side effect in the palette case because the
@@ -1925,11 +1777,14 @@
     */
    png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans,
        &(png_ptr->trans_color));
+   return handled_ok;
 }
+#else
+#  define png_handle_tRNS NULL
 #endif
 
 #ifdef PNG_READ_bKGD_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_bKGD(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    unsigned int truelen;
@@ -1938,28 +1793,18 @@
 
    png_debug(1, "in png_handle_bKGD");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0 ||
-       (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
-       (png_ptr->mode & PNG_HAVE_PLTE) == 0))
+   if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
    {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
+      if ((png_ptr->mode & PNG_HAVE_PLTE) == 0)
+      {
+         png_crc_finish(png_ptr, length);
+         png_chunk_benign_error(png_ptr, "out of place");
+         return handled_error;
+      }
 
-   else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
+      truelen = 1;
    }
 
-   if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-      truelen = 1;
-
    else if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0)
       truelen = 6;
 
@@ -1970,13 +1815,13 @@
    {
       png_crc_finish(png_ptr, length);
       png_chunk_benign_error(png_ptr, "invalid");
-      return;
+      return handled_error;
    }
 
    png_crc_read(png_ptr, buf, truelen);
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
    /* We convert the index value into RGB components so that we can allow
     * arbitrary RGB values for background when we have transparency, and
@@ -1992,7 +1837,7 @@
          if (buf[0] >= info_ptr->num_palette)
          {
             png_chunk_benign_error(png_ptr, "invalid index");
-            return;
+            return handled_error;
          }
 
          background.red = (png_uint_16)png_ptr->palette[buf[0]].red;
@@ -2013,7 +1858,7 @@
          if (buf[0] != 0 || buf[1] >= (unsigned int)(1 << png_ptr->bit_depth))
          {
             png_chunk_benign_error(png_ptr, "invalid gray level");
-            return;
+            return handled_error;
          }
       }
 
@@ -2031,7 +1876,7 @@
          if (buf[0] != 0 || buf[2] != 0 || buf[4] != 0)
          {
             png_chunk_benign_error(png_ptr, "invalid color");
-            return;
+            return handled_error;
          }
       }
 
@@ -2043,11 +1888,14 @@
    }
 
    png_set_bKGD(png_ptr, info_ptr, &background);
+   return handled_ok;
 }
+#else
+#  define png_handle_bKGD NULL
 #endif
 
 #ifdef PNG_READ_cICP_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_cICP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_byte buf[4];
@@ -2054,41 +1902,39 @@
 
    png_debug(1, "in png_handle_cICP");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
+   png_crc_read(png_ptr, buf, 4);
 
-   else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
+   if (png_crc_finish(png_ptr, 0) != 0)
+      return handled_error;
 
-   else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_cICP) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
+   png_set_cICP(png_ptr, info_ptr, buf[0], buf[1],  buf[2], buf[3]);
 
-   else if (length != 4)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "invalid");
-      return;
-   }
+   /* We only use 'chromaticities' for RGB to gray */
+#  ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+      if (!png_has_chunk(png_ptr, mDCV))
+      {
+         /* TODO: png_ptr->chromaticities = chromaticities; */
+      }
+#  endif /* READ_RGB_TO_GRAY */
 
-   png_crc_read(png_ptr, buf, 4);
+#ifdef PNG_READ_GAMMA_SUPPORTED
+      /* PNGv3: chunk precedence for gamma is cICP, [iCCP], sRGB, gAMA.  cICP is
+       * at the head so simply set the gamma if it can be determined.  If not
+       * chunk_gamma remains unchanged; sRGB and gAMA handling check it for
+       * being zero.
+       */
+      /* TODO: set png_struct::chunk_gamma when possible */
+#endif /*READ_GAMMA*/
 
-   if (png_crc_finish(png_ptr, 0) != 0)
-      return;
-
-   png_set_cICP(png_ptr, info_ptr, buf[0], buf[1],  buf[2], buf[3]);
+   return handled_ok;
+   PNG_UNUSED(length)
 }
+#else
+#  define png_handle_cICP NULL
 #endif
 
 #ifdef PNG_READ_cLLI_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_cLLI(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_byte buf[8];
@@ -2095,77 +1941,34 @@
 
    png_debug(1, "in png_handle_cLLI");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
-
-   else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_cLLI) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
-
-   else if (length != 8)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "invalid");
-      return;
-   }
-
    png_crc_read(png_ptr, buf, 8);
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
    /* The error checking happens here, this puts it in just one place: */
    png_set_cLLI_fixed(png_ptr, info_ptr, png_get_uint_32(buf),
          png_get_uint_32(buf+4));
+   return handled_ok;
+   PNG_UNUSED(length)
 }
+#else
+#  define png_handle_cLLI NULL
 #endif
 
 #ifdef PNG_READ_mDCV_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_mDCV(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
+   png_xy chromaticities;
    png_byte buf[24];
 
    png_debug(1, "in png_handle_mDCV");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
-
-   else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_mDCV) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
-
-   else if (length != 24)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "invalid");
-      return;
-   }
-
    png_crc_read(png_ptr, buf, 24);
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
    /* The error checking happens here, this puts it in just one place.  The
     * odd /50000 scaling factor makes it more difficult but the (x.y) values are
@@ -2178,86 +1981,81 @@
     * stored in four bytes.  This is very, very confusing.  These APIs remove
     * the confusion by copying the existing, well established, API.
     */
+   chromaticities.redx   = png_get_uint_16(buf+ 0U) << 1; /* red x */
+   chromaticities.redy   = png_get_uint_16(buf+ 2U) << 1; /* red y */
+   chromaticities.greenx = png_get_uint_16(buf+ 4U) << 1; /* green x */
+   chromaticities.greeny = png_get_uint_16(buf+ 6U) << 1; /* green y */
+   chromaticities.bluex  = png_get_uint_16(buf+ 8U) << 1; /* blue x */
+   chromaticities.bluey  = png_get_uint_16(buf+10U) << 1; /* blue y */
+   chromaticities.whitex = png_get_uint_16(buf+12U) << 1; /* white x */
+   chromaticities.whitey = png_get_uint_16(buf+14U) << 1; /* white y */
+
    png_set_mDCV_fixed(png_ptr, info_ptr,
-         png_get_uint_16(buf+12U) << 1U, /* white x */
-         png_get_uint_16(buf+14U) << 1U, /* white y */
-         png_get_uint_16(buf+ 0U) << 1U, /* red x */
-         png_get_uint_16(buf+ 2U) << 1U, /* red y */
-         png_get_uint_16(buf+ 4U) << 1U, /* green x */
-         png_get_uint_16(buf+ 6U) << 1U, /* green y */
-         png_get_uint_16(buf+ 8U) << 1U, /* blue x */
-         png_get_uint_16(buf+10U) << 1U, /* blue y */
+         chromaticities.whitex, chromaticities.whitey,
+         chromaticities.redx, chromaticities.redy,
+         chromaticities.greenx, chromaticities.greeny,
+         chromaticities.bluex, chromaticities.bluey,
          png_get_uint_32(buf+16U), /* peak luminance */
          png_get_uint_32(buf+20U));/* minimum perceivable luminance */
+
+   /* We only use 'chromaticities' for RGB to gray */
+#  ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+      png_ptr->chromaticities = chromaticities;
+#  endif /* READ_RGB_TO_GRAY */
+
+   return handled_ok;
+   PNG_UNUSED(length)
 }
+#else
+#  define png_handle_mDCV NULL
 #endif
 
 #ifdef PNG_READ_eXIf_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_eXIf(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
-   unsigned int i;
+   png_bytep buffer = NULL;
 
    png_debug(1, "in png_handle_eXIf");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
+   buffer = png_read_buffer(png_ptr, length);
 
-   if (length < 2)
+   if (buffer == NULL)
    {
       png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "too short");
-      return;
+      png_chunk_benign_error(png_ptr, "out of memory");
+      return handled_error;
    }
 
-   else if (info_ptr == NULL || (info_ptr->valid & PNG_INFO_eXIf) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
+   png_crc_read(png_ptr, buffer, length);
 
-   info_ptr->free_me |= PNG_FREE_EXIF;
+   if (png_crc_finish(png_ptr, 0) != 0)
+      return handled_error;
 
-   info_ptr->eXIf_buf = png_voidcast(png_bytep,
-             png_malloc_warn(png_ptr, length));
-
-   if (info_ptr->eXIf_buf == NULL)
+   /* PNGv3: the code used to check the byte order mark at the start for MM or
+    * II, however PNGv3 states that the the first 4 bytes should be checked.
+    * The caller ensures that there are four bytes available.
+    */
    {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of memory");
-      return;
-   }
+      png_uint_32 header = png_get_uint_32(buffer);
 
-   for (i = 0; i < length; i++)
-   {
-      png_byte buf[1];
-      png_crc_read(png_ptr, buf, 1);
-      info_ptr->eXIf_buf[i] = buf[0];
-      if (i == 1)
+      /* These numbers are copied from the PNGv3 spec: */
+      if (header != 0x49492A00 && header != 0x4D4D002A)
       {
-         if ((buf[0] != 'M' && buf[0] != 'I') ||
-             (info_ptr->eXIf_buf[0] != buf[0]))
-         {
-            png_crc_finish(png_ptr, length - 2);
-            png_chunk_benign_error(png_ptr, "incorrect byte-order specifier");
-            png_free(png_ptr, info_ptr->eXIf_buf);
-            info_ptr->eXIf_buf = NULL;
-            return;
-         }
+         png_chunk_benign_error(png_ptr, "invalid");
+         return handled_error;
       }
    }
 
-   if (png_crc_finish(png_ptr, 0) == 0)
-      png_set_eXIf_1(png_ptr, info_ptr, length, info_ptr->eXIf_buf);
-
-   png_free(png_ptr, info_ptr->eXIf_buf);
-   info_ptr->eXIf_buf = NULL;
+   png_set_eXIf_1(png_ptr, info_ptr, length, buffer);
+   return handled_ok;
 }
+#else
+#  define png_handle_eXIf NULL
 #endif
 
 #ifdef PNG_READ_hIST_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    unsigned int num, i;
@@ -2265,26 +2063,14 @@
 
    png_debug(1, "in png_handle_hIST");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
+   /* This cast is safe because the chunk definition limits the length to a
+    * maximum of 1024 bytes.
+    *
+    * TODO: maybe use png_uint_32 anyway, not unsigned int, to reduce the
+    * casts.
+    */
+   num = (unsigned int)length / 2 ;
 
-   else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0 ||
-       (png_ptr->mode & PNG_HAVE_PLTE) == 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
-
-   else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
-
-   num = length / 2 ;
-
    if (length != num * 2 ||
        num != (unsigned int)png_ptr->num_palette ||
        num > (unsigned int)PNG_MAX_PALETTE_LENGTH)
@@ -2291,7 +2077,7 @@
    {
       png_crc_finish(png_ptr, length);
       png_chunk_benign_error(png_ptr, "invalid");
-      return;
+      return handled_error;
    }
 
    for (i = 0; i < num; i++)
@@ -2303,14 +2089,17 @@
    }
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
    png_set_hIST(png_ptr, info_ptr, readbuf);
+   return handled_ok;
 }
+#else
+#  define png_handle_hIST NULL
 #endif
 
 #ifdef PNG_READ_pHYs_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_pHYs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_byte buf[9];
@@ -2319,44 +2108,24 @@
 
    png_debug(1, "in png_handle_pHYs");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
-
-   else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
-
-   if (length != 9)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "invalid");
-      return;
-   }
-
    png_crc_read(png_ptr, buf, 9);
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
    res_x = png_get_uint_32(buf);
    res_y = png_get_uint_32(buf + 4);
    unit_type = buf[8];
    png_set_pHYs(png_ptr, info_ptr, res_x, res_y, unit_type);
+   return handled_ok;
+   PNG_UNUSED(length)
 }
+#else
+#  define png_handle_pHYs NULL
 #endif
 
 #ifdef PNG_READ_oFFs_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_oFFs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_byte buf[9];
@@ -2365,45 +2134,25 @@
 
    png_debug(1, "in png_handle_oFFs");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
-
-   else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
-
-   if (length != 9)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "invalid");
-      return;
-   }
-
    png_crc_read(png_ptr, buf, 9);
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
    offset_x = png_get_int_32(buf);
    offset_y = png_get_int_32(buf + 4);
    unit_type = buf[8];
    png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y, unit_type);
+   return handled_ok;
+   PNG_UNUSED(length)
 }
+#else
+#  define png_handle_oFFs NULL
 #endif
 
 #ifdef PNG_READ_pCAL_SUPPORTED
 /* Read the pCAL chunk (described in the PNG Extensions document) */
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_pCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_int_32 X0, X1;
@@ -2413,40 +2162,22 @@
    int i;
 
    png_debug(1, "in png_handle_pCAL");
-
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
-
-   else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
-
    png_debug1(2, "Allocating and reading pCAL chunk data (%u bytes)",
        length + 1);
 
-   buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/);
+   buffer = png_read_buffer(png_ptr, length+1);
 
    if (buffer == NULL)
    {
       png_crc_finish(png_ptr, length);
       png_chunk_benign_error(png_ptr, "out of memory");
-      return;
+      return handled_error;
    }
 
    png_crc_read(png_ptr, buffer, length);
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
    buffer[length] = 0; /* Null terminate the last string */
 
@@ -2462,7 +2193,7 @@
    if (endptr - buf <= 12)
    {
       png_chunk_benign_error(png_ptr, "invalid");
-      return;
+      return handled_error;
    }
 
    png_debug(3, "Reading pCAL X0, X1, type, nparams, and units");
@@ -2482,7 +2213,7 @@
        (type == PNG_EQUATION_HYPERBOLIC && nparams != 4))
    {
       png_chunk_benign_error(png_ptr, "invalid parameter count");
-      return;
+      return handled_error;
    }
 
    else if (type >= PNG_EQUATION_LAST)
@@ -2501,7 +2232,7 @@
    if (params == NULL)
    {
       png_chunk_benign_error(png_ptr, "out of memory");
-      return;
+      return handled_error;
    }
 
    /* Get pointers to the start of each parameter string. */
@@ -2519,7 +2250,7 @@
       {
          png_free(png_ptr, params);
          png_chunk_benign_error(png_ptr, "invalid data");
-         return;
+         return handled_error;
       }
    }
 
@@ -2526,13 +2257,22 @@
    png_set_pCAL(png_ptr, info_ptr, (png_charp)buffer, X0, X1, type, nparams,
        (png_charp)units, params);
 
+   /* TODO: BUG: png_set_pCAL calls png_chunk_report which, in this case, calls
+    * png_benign_error and that can error out.
+    *
+    * png_read_buffer needs to be allocated with space for both nparams and the
+    * parameter strings.  Not hard to do.
+    */
    png_free(png_ptr, params);
+   return handled_ok;
 }
+#else
+#  define png_handle_pCAL NULL
 #endif
 
 #ifdef PNG_READ_sCAL_SUPPORTED
 /* Read the sCAL chunk */
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_sCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_bytep buffer;
@@ -2540,42 +2280,16 @@
    int state;
 
    png_debug(1, "in png_handle_sCAL");
-
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "out of place");
-      return;
-   }
-
-   else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sCAL) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
-
-   /* Need unit type, width, \0, height: minimum 4 bytes */
-   else if (length < 4)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "invalid");
-      return;
-   }
-
    png_debug1(2, "Allocating and reading sCAL chunk data (%u bytes)",
        length + 1);
 
-   buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/);
+   buffer = png_read_buffer(png_ptr, length+1);
 
    if (buffer == NULL)
    {
+      png_crc_finish(png_ptr, length);
       png_chunk_benign_error(png_ptr, "out of memory");
-      png_crc_finish(png_ptr, length);
-      return;
+      return handled_error;
    }
 
    png_crc_read(png_ptr, buffer, length);
@@ -2582,13 +2296,13 @@
    buffer[length] = 0; /* Null terminate the last string */
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
    /* Validate the unit. */
    if (buffer[0] != 1 && buffer[0] != 2)
    {
       png_chunk_benign_error(png_ptr, "invalid unit");
-      return;
+      return handled_error;
    }
 
    /* Validate the ASCII numbers, need two ASCII numbers separated by
@@ -2617,15 +2331,22 @@
          png_chunk_benign_error(png_ptr, "non-positive height");
 
       else
+      {
          /* This is the (only) success case. */
          png_set_sCAL_s(png_ptr, info_ptr, buffer[0],
              (png_charp)buffer+1, (png_charp)buffer+heighti);
+         return handled_ok;
+      }
    }
+
+   return handled_error;
 }
+#else
+#  define png_handle_sCAL NULL
 #endif
 
 #ifdef PNG_READ_tIME_SUPPORTED
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_tIME(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_byte buf[7];
@@ -2633,30 +2354,17 @@
 
    png_debug(1, "in png_handle_tIME");
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
-   else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME) != 0)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "duplicate");
-      return;
-   }
-
+   /* TODO: what is this doing here?  It should be happened in pngread.c and
+    * pngpread.c, although it could be moved to png_handle_chunk below and
+    * thereby avoid some code duplication.
+    */
    if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
       png_ptr->mode |= PNG_AFTER_IDAT;
 
-   if (length != 7)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "invalid");
-      return;
-   }
-
    png_crc_read(png_ptr, buf, 7);
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
    mod_time.second = buf[6];
    mod_time.minute = buf[5];
@@ -2666,12 +2374,16 @@
    mod_time.year = png_get_uint_16(buf);
 
    png_set_tIME(png_ptr, info_ptr, &mod_time);
+   return handled_ok;
+   PNG_UNUSED(length)
 }
+#else
+#  define png_handle_tIME NULL
 #endif
 
 #ifdef PNG_READ_tEXt_SUPPORTED
 /* Note: this does not properly handle chunks that are > 64K under DOS */
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_tEXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_text  text_info;
@@ -2688,7 +2400,7 @@
       if (png_ptr->user_chunk_cache_max == 1)
       {
          png_crc_finish(png_ptr, length);
-         return;
+         return handled_error;
       }
 
       if (--png_ptr->user_chunk_cache_max == 1)
@@ -2695,38 +2407,28 @@
       {
          png_crc_finish(png_ptr, length);
          png_chunk_benign_error(png_ptr, "no space in chunk cache");
-         return;
+         return handled_error;
       }
    }
 #endif
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
+   /* TODO: this doesn't work and shouldn't be necessary. */
    if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
       png_ptr->mode |= PNG_AFTER_IDAT;
 
-#ifdef PNG_MAX_MALLOC_64K
-   if (length > 65535U)
-   {
-      png_crc_finish(png_ptr, length);
-      png_chunk_benign_error(png_ptr, "too large to fit in memory");
-      return;
-   }
-#endif
+   buffer = png_read_buffer(png_ptr, length+1);
 
-   buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/);
-
    if (buffer == NULL)
    {
+      png_crc_finish(png_ptr, length);
       png_chunk_benign_error(png_ptr, "out of memory");
-      return;
+      return handled_error;
    }
 
    png_crc_read(png_ptr, buffer, length);
 
    if (png_crc_finish(png_ptr, skip) != 0)
-      return;
+      return handled_error;
 
    key = (png_charp)buffer;
    key[length] = 0;
@@ -2745,14 +2447,19 @@
    text_info.text = text;
    text_info.text_length = strlen(text);
 
-   if (png_set_text_2(png_ptr, info_ptr, &text_info, 1) != 0)
-      png_warning(png_ptr, "Insufficient memory to process text chunk");
+   if (png_set_text_2(png_ptr, info_ptr, &text_info, 1) == 0)
+      return handled_ok;
+
+   png_chunk_benign_error(png_ptr, "out of memory");
+   return handled_error;
 }
+#else
+#  define png_handle_tEXt NULL
 #endif
 
 #ifdef PNG_READ_zTXt_SUPPORTED
 /* Note: this does not correctly handle chunks that are > 64K under DOS */
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_zTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_const_charp errmsg = NULL;
@@ -2767,7 +2474,7 @@
       if (png_ptr->user_chunk_cache_max == 1)
       {
          png_crc_finish(png_ptr, length);
-         return;
+         return handled_error;
       }
 
       if (--png_ptr->user_chunk_cache_max == 1)
@@ -2774,33 +2481,32 @@
       {
          png_crc_finish(png_ptr, length);
          png_chunk_benign_error(png_ptr, "no space in chunk cache");
-         return;
+         return handled_error;
       }
    }
 #endif
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
+   /* TODO: should not be necessary. */
    if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
       png_ptr->mode |= PNG_AFTER_IDAT;
 
    /* Note, "length" is sufficient here; we won't be adding
-    * a null terminator later.
+    * a null terminator later.  The limit check in png_handle_chunk should be
+    * sufficient.
     */
-   buffer = png_read_buffer(png_ptr, length, 2/*silent*/);
+   buffer = png_read_buffer(png_ptr, length);
 
    if (buffer == NULL)
    {
       png_crc_finish(png_ptr, length);
       png_chunk_benign_error(png_ptr, "out of memory");
-      return;
+      return handled_error;
    }
 
    png_crc_read(png_ptr, buffer, length);
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
    /* TODO: also check that the keyword contents match the spec! */
    for (keyword_length = 0;
@@ -2853,8 +2559,10 @@
             text.lang = NULL;
             text.lang_key = NULL;
 
-            if (png_set_text_2(png_ptr, info_ptr, &text, 1) != 0)
-               errmsg = "insufficient memory";
+            if (png_set_text_2(png_ptr, info_ptr, &text, 1) == 0)
+               return handled_ok;
+
+            errmsg = "out of memory";
          }
       }
 
@@ -2862,14 +2570,16 @@
          errmsg = png_ptr->zstream.msg;
    }
 
-   if (errmsg != NULL)
-      png_chunk_benign_error(png_ptr, errmsg);
+   png_chunk_benign_error(png_ptr, errmsg);
+   return handled_error;
 }
+#else
+#  define png_handle_zTXt NULL
 #endif
 
 #ifdef PNG_READ_iTXt_SUPPORTED
 /* Note: this does not correctly handle chunks that are > 64K under DOS */
-void /* PRIVATE */
+static png_handle_result_code /* PRIVATE */
 png_handle_iTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
    png_const_charp errmsg = NULL;
@@ -2884,7 +2594,7 @@
       if (png_ptr->user_chunk_cache_max == 1)
       {
          png_crc_finish(png_ptr, length);
-         return;
+         return handled_error;
       }
 
       if (--png_ptr->user_chunk_cache_max == 1)
@@ -2891,30 +2601,28 @@
       {
          png_crc_finish(png_ptr, length);
          png_chunk_benign_error(png_ptr, "no space in chunk cache");
-         return;
+         return handled_error;
       }
    }
 #endif
 
-   if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
-      png_chunk_error(png_ptr, "missing IHDR");
-
+   /* TODO: should not be necessary. */
    if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
       png_ptr->mode |= PNG_AFTER_IDAT;
 
-   buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/);
+   buffer = png_read_buffer(png_ptr, length+1);
 
    if (buffer == NULL)
    {
       png_crc_finish(png_ptr, length);
       png_chunk_benign_error(png_ptr, "out of memory");
-      return;
+      return handled_error;
    }
 
    png_crc_read(png_ptr, buffer, length);
 
    if (png_crc_finish(png_ptr, 0) != 0)
-      return;
+      return handled_error;
 
    /* First the keyword. */
    for (prefix_length=0;
@@ -3004,8 +2712,10 @@
          text.text_length = 0;
          text.itxt_length = uncompressed_length;
 
-         if (png_set_text_2(png_ptr, info_ptr, &text, 1) != 0)
-            errmsg = "insufficient memory";
+         if (png_set_text_2(png_ptr, info_ptr, &text, 1) == 0)
+            return handled_ok;
+
+         errmsg = "out of memory";
       }
    }
 
@@ -3014,7 +2724,10 @@
 
    if (errmsg != NULL)
       png_chunk_benign_error(png_ptr, errmsg);
+   return handled_error;
 }
+#else
+#  define png_handle_iTXt NULL
 #endif
 
 #ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
@@ -3022,7 +2735,7 @@
 static int
 png_cache_unknown_chunk(png_structrp png_ptr, png_uint_32 length)
 {
-   png_alloc_size_t limit = PNG_SIZE_MAX;
+   const png_alloc_size_t limit = png_chunk_max(png_ptr);
 
    if (png_ptr->unknown_chunk.data != NULL)
    {
@@ -3030,16 +2743,6 @@
       png_ptr->unknown_chunk.data = NULL;
    }
 
-#  ifdef PNG_SET_USER_LIMITS_SUPPORTED
-   if (png_ptr->user_chunk_malloc_max > 0 &&
-       png_ptr->user_chunk_malloc_max < limit)
-      limit = png_ptr->user_chunk_malloc_max;
-
-#  elif PNG_USER_CHUNK_MALLOC_MAX > 0
-   if (PNG_USER_CHUNK_MALLOC_MAX < limit)
-      limit = PNG_USER_CHUNK_MALLOC_MAX;
-#  endif
-
    if (length <= limit)
    {
       PNG_CSTRING_FROM_CHUNK(png_ptr->unknown_chunk.name, png_ptr->chunk_name);
@@ -3078,11 +2781,11 @@
 #endif /* READ_UNKNOWN_CHUNKS */
 
 /* Handle an unknown, or known but disabled, chunk */
-void /* PRIVATE */
+png_handle_result_code /*PRIVATE*/
 png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr,
     png_uint_32 length, int keep)
 {
-   int handled = 0; /* the chunk was handled */
+   png_handle_result_code handled = handled_discarded; /* the default */
 
    png_debug(1, "in png_handle_unknown");
 
@@ -3129,7 +2832,7 @@
           *           error at this point unless it is to be saved.
           * positive: The chunk was handled, libpng will ignore/discard it.
           */
-         if (ret < 0)
+         if (ret < 0) /* handled_error */
             png_chunk_error(png_ptr, "error in user chunk");
 
          else if (ret == 0)
@@ -3163,7 +2866,7 @@
 
          else /* chunk was handled */
          {
-            handled = 1;
+            handled = handled_ok;
             /* Critical chunks can be safely discarded at this point. */
             keep = PNG_HANDLE_CHUNK_NEVER;
          }
@@ -3248,7 +2951,7 @@
              */
             png_set_unknown_chunks(png_ptr, info_ptr,
                 &png_ptr->unknown_chunk, 1);
-            handled = 1;
+            handled = handled_saved;
 #  ifdef PNG_USER_LIMITS_SUPPORTED
             break;
       }
@@ -3274,79 +2977,267 @@
 #endif /* !READ_UNKNOWN_CHUNKS */
 
    /* Check for unhandled critical chunks */
-   if (handled == 0 && PNG_CHUNK_CRITICAL(png_ptr->chunk_name))
+   if (handled < handled_saved && PNG_CHUNK_CRITICAL(png_ptr->chunk_name))
       png_chunk_error(png_ptr, "unhandled critical chunk");
+
+   return handled;
 }
 
-/* This function is called to verify that a chunk name is valid.
- * This function can't have the "critical chunk check" incorporated
- * into it, since in the future we will need to be able to call user
- * functions to handle unknown critical chunks after we check that
- * the chunk name itself is valid.
+/* APNG handling: the minimal implementation of APNG handling in libpng 1.6
+ * requires that those significant applications which already handle APNG not
+ * get hosed.  To do this ensure the code here will have to ensure than APNG
+ * data by default (at least in 1.6) gets stored in the unknown chunk list.
+ * Maybe this can be relaxed in a few years but at present it's just the only
+ * safe way.
+ *
+ * ATM just cause unknown handling for all three chunks:
  */
+#define png_handle_acTL NULL
+#define png_handle_fcTL NULL
+#define png_handle_fdAT NULL
 
-/* Bit hacking: the test for an invalid byte in the 4 byte chunk name is:
+/*
+ * 1.6.47: This is the new table driven interface to all the chunk handling.
  *
- * ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
+ * The table describes the PNG standard rules for **reading** known chunks -
+ * every chunk which has an entry in PNG_KNOWN_CHUNKS.  The table contains an
+ * entry for each PNG_INDEX_cHNK describing the rules.
+ *
+ * In this initial version the only information in the entry is the
+ * png_handle_cHNK function for the chunk in question.  When chunk support is
+ * compiled out the entry will be NULL.
  */
+static const struct
+{
+   png_handle_result_code (*handler)(
+         png_structrp, png_inforp, png_uint_32 length);
+      /* A chunk-specific 'handler', NULL if the chunk is not supported in this
+       * build.
+       */
 
-void /* PRIVATE */
-png_check_chunk_name(png_const_structrp png_ptr, png_uint_32 chunk_name)
+   /* Crushing these values helps on modern 32-bit architectures because the
+    * pointer and the following bit fields both end up requiring 32 bits.
+    * Typically this will halve the table size.  On 64-bit architectures the
+    * table entries will typically be 8 bytes.
+    */
+   png_uint_32 max_length :12; /* Length min, max in bytes */
+   png_uint_32 min_length :8;
+      /* Length errors on critical chunks have special handling to preserve the
+       * existing behaviour in libpng 1.6.  Anciallary chunks are checked below
+       * and produce a 'benign' error.
+       */
+   png_uint_32 pos_before :4; /* PNG_HAVE_ values chunk must precede */
+   png_uint_32 pos_after  :4; /* PNG_HAVE_ values chunk must follow */
+      /* NOTE: PLTE, tRNS and bKGD require special handling which depends on
+       * the colour type of the base image.
+       */
+   png_uint_32 multiple   :1; /* Multiple occurences permitted */
+      /* This is enabled for PLTE because PLTE may, in practice, be optional */
+}
+read_chunks[PNG_INDEX_unknown] =
 {
-   int i;
-   png_uint_32 cn=chunk_name;
+   /* Definitions as above but done indirectly by #define so that
+    * PNG_KNOWN_CHUNKS can be used safely to build the table in order.
+    *
+    * Each CDcHNK definition lists the values for the parameters **after**
+    * the first, 'handler', function.  'handler' is NULL when the chunk has no
+    * compiled in support.
+    */
+#  define NoCheck 0x801U      /* Do not check the maximum length */
+#  define Limit   0x802U      /* Limit to png_chunk_max bytes */
+#  define LKMin   3U+LZ77Min  /* Minimum length of keyword+LZ77 */
 
-   png_debug(1, "in png_check_chunk_name");
+#define hIHDR PNG_HAVE_IHDR
+#define hPLTE PNG_HAVE_PLTE
+#define hIDAT PNG_HAVE_IDAT
+   /* For the two chunks, tRNS and bKGD which can occur in PNGs without a PLTE
+    * but must occur after the PLTE use this and put the check in the handler
+    * routine for colour mapped images were PLTE is required.  Also put a check
+    * in PLTE for other image types to drop the PLTE if tRNS or bKGD have been
+    * seen.
+    */
+#define hCOL  (PNG_HAVE_PLTE|PNG_HAVE_IDAT)
+   /* Used for the decoding chunks which must be before PLTE. */
+#define aIDAT PNG_AFTER_IDAT
 
-   for (i=1; i<=4; ++i)
+   /* Chunks from W3C PNG v3: */
+   /*       cHNK  max_len,   min, before, after, multiple */
+#  define CDIHDR      13U,   13U,  hIHDR,     0,        0
+#  define CDPLTE  NoCheck,    0U,      0, hIHDR,        1
+      /* PLTE errors are only critical for colour-map images, consequently the
+       * hander does all the checks.
+       */
+#  define CDIDAT  NoCheck,    0U,  aIDAT, hIHDR,        1
+#  define CDIEND  NoCheck,    0U,      0, aIDAT,        0
+      /* Historically data was allowed in IEND */
+#  define CDtRNS     256U,    0U,  hIDAT, hIHDR,        0
+#  define CDcHRM      32U,   32U,   hCOL, hIHDR,        0
+#  define CDgAMA       4U,    4U,   hCOL, hIHDR,        0
+#  define CDiCCP  NoCheck, LKMin,   hCOL, hIHDR,        0
+#  define CDsBIT       4U,    1U,   hCOL, hIHDR,        0
+#  define CDsRGB       1U,    1U,   hCOL, hIHDR,        0
+#  define CDcICP       4U,    4U,   hCOL, hIHDR,        0
+#  define CDmDCV      24U,   24U,   hCOL, hIHDR,        0
+#  define CDeXIf    Limit,    4U,      0, hIHDR,        0
+#  define CDcLLI       8U,    8U,   hCOL, hIHDR,        0
+#  define CDtEXt  NoCheck,    2U,      0, hIHDR,        1
+      /* Allocates 'length+1'; checked in the handler */
+#  define CDzTXt    Limit, LKMin,      0, hIHDR,        1
+#  define CDiTXt  NoCheck,    6U,      0, hIHDR,        1
+      /* Allocates 'length+1'; checked in the handler */
+#  define CDbKGD       6U,    1U,  hIDAT, hIHDR,        0
+#  define CDhIST    1024U,    0U,  hPLTE, hIHDR,        0
+#  define CDpHYs       9U,    9U,  hIDAT, hIHDR,        0
+#  define CDsPLT  NoCheck,    3U,  hIDAT, hIHDR,        1
+      /* Allocates 'length+1'; checked in the handler */
+#  define CDtIME       7U,    7U,      0, hIHDR,        0
+#  define CDacTL       8U,    8U,  hIDAT, hIHDR,        0
+#  define CDfcTL      25U,   26U,      0, hIHDR,        1
+#  define CDfdAT    Limit,    4U,  hIDAT, hIHDR,        1
+   /* Supported chunks from PNG extensions 1.5.0, NYI so limit */
+#  define CDoFFs       9U,    9U,  hIDAT, hIHDR,        0
+#  define CDpCAL  NoCheck,   14U,  hIDAT, hIHDR,        0
+      /* Allocates 'length+1'; checked in the handler */
+#  define CDsCAL    Limit,    4U,  hIDAT, hIHDR,        0
+      /* Allocates 'length+1'; checked in the handler */
+
+#  define PNG_CHUNK(cHNK, index) { png_handle_ ## cHNK, CD ## cHNK },
+   PNG_KNOWN_CHUNKS
+#  undef PNG_CHUNK
+};
+
+
+static png_index
+png_chunk_index_from_name(png_uint_32 chunk_name)
+{
+   /* For chunk png_cHNK return PNG_INDEX_cHNK.  Return PNG_INDEX_unknown if
+    * chunk_name is not known.  Notice that in a particular build "known" does
+    * not necessarily mean "supported", although the inverse applies.
+    */
+   switch (chunk_name)
    {
-      int c = cn & 0xff;
+#     define PNG_CHUNK(cHNK, index)\
+         case png_ ## cHNK: return PNG_INDEX_ ## cHNK; /* == index */
 
-      if (c < 65 || c > 122 || (c > 90 && c < 97))
-         png_chunk_error(png_ptr, "invalid chunk type");
+      PNG_KNOWN_CHUNKS
 
-      cn >>= 8;
+#     undef PNG_CHUNK
+
+      default: return PNG_INDEX_unknown;
    }
 }
 
-void /* PRIVATE */
-png_check_chunk_length(png_const_structrp png_ptr, png_uint_32 length)
+png_handle_result_code /*PRIVATE*/
+png_handle_chunk(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
 {
-   png_alloc_size_t limit = PNG_UINT_31_MAX;
+   /* CSE: these things don't change, these autos are just to save typing and
+    * make the code more clear.
+    */
+   const png_uint_32 chunk_name = png_ptr->chunk_name;
+   const png_index chunk_index = png_chunk_index_from_name(chunk_name);
 
-# ifdef PNG_SET_USER_LIMITS_SUPPORTED
-   if (png_ptr->user_chunk_malloc_max > 0 &&
-       png_ptr->user_chunk_malloc_max < limit)
-      limit = png_ptr->user_chunk_malloc_max;
-# elif PNG_USER_CHUNK_MALLOC_MAX > 0
-   if (PNG_USER_CHUNK_MALLOC_MAX < limit)
-      limit = PNG_USER_CHUNK_MALLOC_MAX;
-# endif
-   if (png_ptr->chunk_name == png_IDAT)
+   png_handle_result_code handled = handled_error;
+   png_const_charp errmsg = NULL;
+
+   /* Is this a known chunk?  If not there are no checks performed here;
+    * png_handle_unknown does the correct checks.  This means that the values
+    * for known but unsupported chunks in the above table are not used here
+    * however the chunks_seen fields in png_struct are still set.
+    */
+   if (chunk_index == PNG_INDEX_unknown ||
+       read_chunks[chunk_index].handler == NULL)
    {
-      png_alloc_size_t idat_limit = PNG_UINT_31_MAX;
-      size_t row_factor =
-         (size_t)png_ptr->width
-         * (size_t)png_ptr->channels
-         * (png_ptr->bit_depth > 8? 2: 1)
-         + 1
-         + (png_ptr->interlaced? 6: 0);
-      if (png_ptr->height > PNG_UINT_32_MAX/row_factor)
-         idat_limit = PNG_UINT_31_MAX;
-      else
-         idat_limit = png_ptr->height * row_factor;
-      row_factor = row_factor > 32566? 32566 : row_factor;
-      idat_limit += 6 + 5*(idat_limit/row_factor+1); /* zlib+deflate overhead */
-      idat_limit=idat_limit < PNG_UINT_31_MAX? idat_limit : PNG_UINT_31_MAX;
-      limit = limit < idat_limit? idat_limit : limit;
+      handled = png_handle_unknown(
+            png_ptr, info_ptr, length, PNG_HANDLE_CHUNK_AS_DEFAULT);
    }
 
-   if (length > limit)
+   /* First check the position.   The first check is historical; the stream must
+    * start with IHDR and anything else causes libpng to give up immediately.
+    */
+   else if (chunk_index != PNG_INDEX_IHDR &&
+            (png_ptr->mode & PNG_HAVE_IHDR) == 0)
+      png_chunk_error(png_ptr, "missing IHDR"); /* NORETURN */
+
+   /* Before all the pos_before chunks, after all the pos_after chunks. */
+   else if (((png_ptr->mode & read_chunks[chunk_index].pos_before) != 0) ||
+            ((png_ptr->mode & read_chunks[chunk_index].pos_after) !=
+             read_chunks[chunk_index].pos_after))
    {
-      png_debug2(0," length = %lu, limit = %lu",
-         (unsigned long)length,(unsigned long)limit);
-      png_benign_error(png_ptr, "chunk data is too large");
+      errmsg = "out of place";
    }
+
+   /* Now check for duplicates: duplicated critical chunks also produce a
+    * full error.
+    */
+   else if (read_chunks[chunk_index].multiple == 0 &&
+            png_file_has_chunk(png_ptr, chunk_index))
+   {
+      errmsg = "duplicate";
+   }
+
+   else if (length < read_chunks[chunk_index].min_length)
+      errmsg = "too short";
+   else
+   {
+      /* NOTE: apart from IHDR the critical chunks (PLTE, IDAT and IEND) are set
+       * up above not to do any length checks.
+       *
+       * The png_chunk_max check ensures that the variable length chunks are
+       * always checked at this point for being within the system allocation
+       * limits.
+       */
+      unsigned max_length = read_chunks[chunk_index].max_length;
+
+      switch (max_length)
+      {
+         case Limit:
+            /* png_read_chunk_header has already png_error'ed chunks with a
+             * length exceeding the 31-bit PNG limit, so just check the memory
+             * limit:
+             */
+            if (length <= png_chunk_max(png_ptr))
+               goto MeetsLimit;
+
+            errmsg = "length exceeds libpng limit";
+            break;
+
+         default:
+            if (length <= max_length)
+               goto MeetsLimit;
+
+            errmsg = "too long";
+            break;
+
+         case NoCheck:
+         MeetsLimit:
+            handled = read_chunks[chunk_index].handler(
+                  png_ptr, info_ptr, length);
+            break;
+      }
+   }
+
+   /* If there was an error or the chunk was simply skipped it is not counted as
+    * 'seen'.
+    */
+   if (errmsg != NULL)
+   {
+      if (PNG_CHUNK_CRITICAL(chunk_name)) /* stop immediately */
+         png_chunk_error(png_ptr, errmsg);
+      else /* ancillary chunk */
+      {
+         /* The chunk data is skipped: */
+         png_crc_finish(png_ptr, length);
+         png_chunk_benign_error(png_ptr, errmsg);
+      }
+   }
+
+   else if (handled >= handled_saved)
+   {
+      if (chunk_index != PNG_INDEX_unknown)
+         png_file_add_chunk(png_ptr, chunk_index);
+   }
+
+   return handled;
 }
 
 /* Combines the row recently read in with the existing pixels in the row.  This
@@ -4336,6 +4227,9 @@
 
          avail_in = png_ptr->IDAT_read_size;
 
+         if (avail_in > png_chunk_max(png_ptr))
+            avail_in = (uInt)/*SAFE*/png_chunk_max(png_ptr);
+
          if (avail_in > png_ptr->idat_size)
             avail_in = (uInt)png_ptr->idat_size;
 
@@ -4343,9 +4237,14 @@
           * to minimize memory usage by causing lots of re-allocs, but
           * realistically doing IDAT_read_size re-allocs is not likely to be a
           * big problem.
+          *
+          * An error here corresponds to the system being out of memory.
           */
-         buffer = png_read_buffer(png_ptr, avail_in, 0/*error*/);
+         buffer = png_read_buffer(png_ptr, avail_in);
 
+         if (buffer == NULL)
+            png_chunk_error(png_ptr, "out of memory");
+
          png_crc_read(png_ptr, buffer, avail_in);
          png_ptr->idat_size -= avail_in;
 

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngset.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngset.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngset.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -41,27 +41,21 @@
     png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y,
     png_fixed_point blue_x, png_fixed_point blue_y)
 {
-   png_xy xy;
-
    png_debug1(1, "in %s storage function", "cHRM fixed");
 
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
-   xy.redx = red_x;
-   xy.redy = red_y;
-   xy.greenx = green_x;
-   xy.greeny = green_y;
-   xy.bluex = blue_x;
-   xy.bluey = blue_y;
-   xy.whitex = white_x;
-   xy.whitey = white_y;
+   info_ptr->cHRM.redx = red_x;
+   info_ptr->cHRM.redy = red_y;
+   info_ptr->cHRM.greenx = green_x;
+   info_ptr->cHRM.greeny = green_y;
+   info_ptr->cHRM.bluex = blue_x;
+   info_ptr->cHRM.bluey = blue_y;
+   info_ptr->cHRM.whitex = white_x;
+   info_ptr->cHRM.whitey = white_y;
 
-   if (png_colorspace_set_chromaticities(png_ptr, &info_ptr->colorspace, &xy,
-       2/* override with app values*/) != 0)
-      info_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM;
-
-   png_colorspace_sync_info(png_ptr, info_ptr);
+   info_ptr->valid |= PNG_INFO_cHRM;
 }
 
 void PNGFAPI
@@ -73,6 +67,7 @@
     png_fixed_point int_blue_Z)
 {
    png_XYZ XYZ;
+   png_xy xy;
 
    png_debug1(1, "in %s storage function", "cHRM XYZ fixed");
 
@@ -89,11 +84,14 @@
    XYZ.blue_Y = int_blue_Y;
    XYZ.blue_Z = int_blue_Z;
 
-   if (png_colorspace_set_endpoints(png_ptr, &info_ptr->colorspace,
-       &XYZ, 2) != 0)
-      info_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM;
+   if (png_xy_from_XYZ(&xy, &XYZ) == 0)
+   {
+      info_ptr->cHRM = xy;
+      info_ptr->valid |= PNG_INFO_cHRM;
+   }
 
-   png_colorspace_sync_info(png_ptr, info_ptr);
+   else
+      png_app_error(png_ptr, "invalid cHRM XYZ");
 }
 
 #  ifdef PNG_FLOATING_POINT_SUPPORTED
@@ -205,8 +203,7 @@
 
 #ifdef PNG_mDCV_SUPPORTED
 static png_uint_16
-png_ITU_fixed_16(png_const_structrp png_ptr, png_fixed_point v,
-   png_const_charp text)
+png_ITU_fixed_16(int *error, png_fixed_point v)
 {
    /* Return a safe uint16_t value scaled according to the ITU H273 rules for
     * 16-bit display chromaticities.  Functions like the corresponding
@@ -216,12 +213,11 @@
     */
    v /= 2; /* rounds to 0 in C: avoids insignificant arithmetic errors */
    if (v > 65535 || v < 0)
-      png_fixed_error(png_ptr, text);
+   {
+      *error = 1;
+      return 0;
+   }
 
-#  ifndef PNG_ERROR_TEXT_SUPPORTED
-   PNG_UNUSED(text)
-#  endif
-
    return (png_uint_16)/*SAFE*/v;
 }
 
@@ -235,6 +231,7 @@
     png_uint_32 minDL)
 {
    png_uint_16 rx, ry, gx, gy, bx, by, wx, wy;
+   int error;
 
    png_debug1(1, "in %s storage function", "mDCV");
 
@@ -242,15 +239,24 @@
       return;
 
    /* Check the input values to ensure they are in the expected range: */
-   rx = png_ITU_fixed_16(png_ptr, red_x, "png_set_mDCV(red(x))");
-   ry = png_ITU_fixed_16(png_ptr, red_y, "png_set_mDCV(red(y))");
-   gx = png_ITU_fixed_16(png_ptr, green_x, "png_set_mDCV(green(x))");
-   gy = png_ITU_fixed_16(png_ptr, green_y, "png_set_mDCV(green(y))");
-   bx = png_ITU_fixed_16(png_ptr, blue_x, "png_set_mDCV(blue(x))");
-   by = png_ITU_fixed_16(png_ptr, blue_y, "png_set_mDCV(blue(y))");
-   wx = png_ITU_fixed_16(png_ptr, white_x, "png_set_mDCV(white(x))");
-   wy = png_ITU_fixed_16(png_ptr, white_y, "png_set_mDCV(white(y))");
+   error = 0;
+   rx = png_ITU_fixed_16(&error, red_x);
+   ry = png_ITU_fixed_16(&error, red_y);
+   gx = png_ITU_fixed_16(&error, green_x);
+   gy = png_ITU_fixed_16(&error, green_y);
+   bx = png_ITU_fixed_16(&error, blue_x);
+   by = png_ITU_fixed_16(&error, blue_y);
+   wx = png_ITU_fixed_16(&error, white_x);
+   wy = png_ITU_fixed_16(&error, white_y);
 
+   if (error)
+   {
+      png_chunk_report(png_ptr,
+         "mDCV chromaticities outside representable range",
+         PNG_CHUNK_WRITE_ERROR);
+      return;
+   }
+
    /* Check the light level range: */
    if (maxDL > 0x7FFFFFFFU || minDL > 0x7FFFFFFFU)
    {
@@ -294,17 +300,14 @@
     double maxDL, double minDL)
 {
    png_set_mDCV_fixed(png_ptr, info_ptr,
-      /* The ITU approach is to scale by 50,000, not 100,000 so just divide
-       * the input values by 2 and use png_fixed:
-       */
-      png_fixed(png_ptr, white_x / 2, "png_set_mDCV(white(x))"),
-      png_fixed(png_ptr, white_y / 2, "png_set_mDCV(white(y))"),
-      png_fixed(png_ptr, red_x / 2, "png_set_mDCV(red(x))"),
-      png_fixed(png_ptr, red_y / 2, "png_set_mDCV(red(y))"),
-      png_fixed(png_ptr, green_x / 2, "png_set_mDCV(green(x))"),
-      png_fixed(png_ptr, green_y / 2, "png_set_mDCV(green(y))"),
-      png_fixed(png_ptr, blue_x / 2, "png_set_mDCV(blue(x))"),
-      png_fixed(png_ptr, blue_y / 2, "png_set_mDCV(blue(y))"),
+      png_fixed(png_ptr, white_x, "png_set_mDCV(white(x))"),
+      png_fixed(png_ptr, white_y, "png_set_mDCV(white(y))"),
+      png_fixed(png_ptr, red_x, "png_set_mDCV(red(x))"),
+      png_fixed(png_ptr, red_y, "png_set_mDCV(red(y))"),
+      png_fixed(png_ptr, green_x, "png_set_mDCV(green(x))"),
+      png_fixed(png_ptr, green_y, "png_set_mDCV(green(y))"),
+      png_fixed(png_ptr, blue_x, "png_set_mDCV(blue(x))"),
+      png_fixed(png_ptr, blue_y, "png_set_mDCV(blue(y))"),
       png_fixed_ITU(png_ptr, maxDL, "png_set_mDCV(maxDL)"),
       png_fixed_ITU(png_ptr, minDL, "png_set_mDCV(minDL)"));
 }
@@ -362,8 +365,8 @@
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
-   png_colorspace_set_gamma(png_ptr, &info_ptr->colorspace, file_gamma);
-   png_colorspace_sync_info(png_ptr, info_ptr);
+   info_ptr->gamma = file_gamma;
+   info_ptr->valid |= PNG_INFO_gAMA;
 }
 
 #  ifdef PNG_FLOATING_POINT_SUPPORTED
@@ -822,8 +825,8 @@
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
-   (void)png_colorspace_set_sRGB(png_ptr, &info_ptr->colorspace, srgb_intent);
-   png_colorspace_sync_info(png_ptr, info_ptr);
+   info_ptr->rendering_intent = srgb_intent;
+   info_ptr->valid |= PNG_INFO_sRGB;
 }
 
 void PNGAPI
@@ -835,15 +838,20 @@
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
-   if (png_colorspace_set_sRGB(png_ptr, &info_ptr->colorspace,
-       srgb_intent) != 0)
-   {
-      /* This causes the gAMA and cHRM to be written too */
-      info_ptr->colorspace.flags |=
-         PNG_COLORSPACE_FROM_gAMA|PNG_COLORSPACE_FROM_cHRM;
-   }
+   png_set_sRGB(png_ptr, info_ptr, srgb_intent);
 
-   png_colorspace_sync_info(png_ptr, info_ptr);
+#  ifdef PNG_gAMA_SUPPORTED
+      png_set_gAMA_fixed(png_ptr, info_ptr, PNG_GAMMA_sRGB_INVERSE);
+#  endif /* gAMA */
+
+#  ifdef PNG_cHRM_SUPPORTED
+      png_set_cHRM_fixed(png_ptr, info_ptr,
+         /* color      x       y */
+         /* white */ 31270, 32900,
+         /* red   */ 64000, 33000,
+         /* green */ 30000, 60000,
+         /* blue  */ 15000,  6000);
+#  endif /* cHRM */
 }
 #endif /* sRGB */
 
@@ -866,27 +874,6 @@
    if (compression_type != PNG_COMPRESSION_TYPE_BASE)
       png_app_error(png_ptr, "Invalid iCCP compression method");
 
-   /* Set the colorspace first because this validates the profile; do not
-    * override previously set app cHRM or gAMA here (because likely as not the
-    * application knows better than libpng what the correct values are.)  Pass
-    * the info_ptr color_type field to png_colorspace_set_ICC because in the
-    * write case it has not yet been stored in png_ptr.
-    */
-   {
-      int result = png_colorspace_set_ICC(png_ptr, &info_ptr->colorspace, name,
-          proflen, profile, info_ptr->color_type);
-
-      png_colorspace_sync_info(png_ptr, info_ptr);
-
-      /* Don't do any of the copying if the profile was bad, or inconsistent. */
-      if (result == 0)
-         return;
-
-      /* But do write the gAMA and cHRM chunks from the profile. */
-      info_ptr->colorspace.flags |=
-         PNG_COLORSPACE_FROM_gAMA|PNG_COLORSPACE_FROM_cHRM;
-   }
-
    length = strlen(name)+1;
    new_iccp_name = png_voidcast(png_charp, png_malloc_warn(png_ptr, length));
 
@@ -1841,8 +1828,24 @@
 {
    png_debug(1, "in png_set_chunk_malloc_max");
 
+   /* pngstruct::user_chunk_malloc_max is initialized to a non-zero value in
+    * png.c.  This API supports '0' for unlimited, make sure the correct
+    * (unlimited) value is set here to avoid a need to check for 0 everywhere
+    * the parameter is used.
+    */
    if (png_ptr != NULL)
-      png_ptr->user_chunk_malloc_max = user_chunk_malloc_max;
+   {
+      if (user_chunk_malloc_max == 0U) /* unlimited */
+      {
+#        ifdef PNG_MAX_MALLOC_64K
+            png_ptr->user_chunk_malloc_max = 65536U;
+#        else
+            png_ptr->user_chunk_malloc_max = PNG_SIZE_MAX;
+#        endif
+      }
+      else
+         png_ptr->user_chunk_malloc_max = user_chunk_malloc_max;
+   }
 }
 #endif /* ?SET_USER_LIMITS */
 

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngstruct.h
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngstruct.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngstruct.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
-/* pngstruct.h - header file for PNG reference library
+/* pngstruct.h - internal structures for libpng
  *
- * Copyright (c) 2018-2022 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -10,11 +10,9 @@
  * and license in png.h
  */
 
-/* The structure that holds the information to read and write PNG files.
- * The only people who need to care about what is inside of this are the
- * people who will be modifying the library for their own special needs.
- * It should NOT be accessed directly by an application.
- */
+#ifndef PNGPRIV_H
+#  error This file must not be included by applications; please include <png.h>
+#endif
 
 #ifndef PNGSTRUCT_H
 #define PNGSTRUCT_H
@@ -69,13 +67,7 @@
 
 /* Colorspace support; structures used in png_struct, png_info and in internal
  * functions to hold and communicate information about the color space.
- *
- * PNG_COLORSPACE_SUPPORTED is only required if the application will perform
- * colorspace corrections, otherwise all the colorspace information can be
- * skipped and the size of libpng can be reduced (significantly) by compiling
- * out the colorspace support.
  */
-#ifdef PNG_COLORSPACE_SUPPORTED
 /* The chromaticities of the red, green and blue colorants and the chromaticity
  * of the corresponding white point (i.e. of rgb(1.0,1.0,1.0)).
  */
@@ -96,49 +88,37 @@
    png_fixed_point green_X, green_Y, green_Z;
    png_fixed_point blue_X, blue_Y, blue_Z;
 } png_XYZ;
-#endif /* COLORSPACE */
 
-#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED)
-/* A colorspace is all the above plus, potentially, profile information;
- * however at present libpng does not use the profile internally so it is only
- * stored in the png_info struct (if iCCP is supported.)  The rendering intent
- * is retained here and is checked.
- *
- * The file gamma encoding information is also stored here and gamma correction
- * is done by libpng, whereas color correction must currently be done by the
- * application.
+/* Chunk index values as an enum, PNG_INDEX_unknown is also a count of the
+ * number of chunks.
  */
-typedef struct png_colorspace
+#define PNG_CHUNK(cHNK, i) PNG_INDEX_ ## cHNK = (i),
+typedef enum
 {
-#ifdef PNG_GAMMA_SUPPORTED
-   png_fixed_point gamma;        /* File gamma */
-#endif
+   PNG_KNOWN_CHUNKS
+   PNG_INDEX_unknown
+} png_index;
+#undef PNG_CHUNK
 
-#ifdef PNG_COLORSPACE_SUPPORTED
-   png_xy      end_points_xy;    /* End points as chromaticities */
-   png_XYZ     end_points_XYZ;   /* End points as CIE XYZ colorant values */
-   png_uint_16 rendering_intent; /* Rendering intent of a profile */
-#endif
+/* Chunk flag values.  These are (png_uint_32 values) with exactly one bit set
+ * and can be combined into a flag set with bitwise 'or'.
+ *
+ * TODO: C23: convert these macros to C23 inlines (which are static).
+ */
+#define png_chunk_flag_from_index(i) (0x80000000U >> (31 - (i)))
+   /* The flag coresponding to the given png_index enum value.  This is defined
+    * for png_unknown as well (until it reaches the value 32) but this should
+    * not be relied on.
+    */
 
-   /* Flags are always defined to simplify the code. */
-   png_uint_16 flags;            /* As defined below */
-} png_colorspace, * PNG_RESTRICT png_colorspacerp;
+#define png_file_has_chunk(png_ptr, i)\
+   (((png_ptr)->chunks & png_chunk_flag_from_index(i)) != 0)
+   /* The chunk has been recorded in png_struct */
 
-typedef const png_colorspace * PNG_RESTRICT png_const_colorspacerp;
+#define png_file_add_chunk(pnt_ptr, i)\
+   ((void)((png_ptr)->chunks |= png_chunk_flag_from_index(i)))
+   /* Record the chunk in the png_struct */
 
-/* General flags for the 'flags' field */
-#define PNG_COLORSPACE_HAVE_GAMMA           0x0001
-#define PNG_COLORSPACE_HAVE_ENDPOINTS       0x0002
-#define PNG_COLORSPACE_HAVE_INTENT          0x0004
-#define PNG_COLORSPACE_FROM_gAMA            0x0008
-#define PNG_COLORSPACE_FROM_cHRM            0x0010
-#define PNG_COLORSPACE_FROM_sRGB            0x0020
-#define PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB 0x0040
-#define PNG_COLORSPACE_MATCHES_sRGB         0x0080 /* exact match on profile */
-#define PNG_COLORSPACE_INVALID              0x8000
-#define PNG_COLORSPACE_CANCEL(flags)        (0xffff ^ (flags))
-#endif /* COLORSPACE || GAMMA */
-
 struct png_struct_def
 {
 #ifdef PNG_SETJMP_SUPPORTED
@@ -209,6 +189,11 @@
    int zlib_set_strategy;
 #endif
 
+   png_uint_32 chunks; /* PNG_CF_ for every chunk read or (NYI) written */
+#  define png_has_chunk(png_ptr, cHNK)\
+      png_file_has_chunk(png_ptr, PNG_INDEX_ ## cHNK)
+      /* Convenience accessor - use this to check for a known chunk by name */
+
    png_uint_32 width;         /* width of image in pixels */
    png_uint_32 height;        /* height of image in pixels */
    png_uint_32 num_rows;      /* number of rows in current pass */
@@ -285,9 +270,16 @@
    png_uint_32 flush_rows;    /* number of rows written since last flush */
 #endif
 
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+   png_xy          chromaticities; /* From mDVC, cICP, [iCCP], sRGB or cHRM */
+#endif
+
 #ifdef PNG_READ_GAMMA_SUPPORTED
    int gamma_shift;      /* number of "insignificant" bits in 16-bit gamma */
-   png_fixed_point screen_gamma; /* screen gamma value (display_exponent) */
+   png_fixed_point screen_gamma; /* screen gamma value (display exponent) */
+   png_fixed_point file_gamma;   /* file gamma value (encoding exponent) */
+   png_fixed_point chunk_gamma;  /* from cICP, iCCP, sRGB or gAMA */
+   png_fixed_point default_gamma;/* from png_set_alpha_mode */
 
    png_bytep gamma_table;     /* gamma table for 8-bit depth files */
    png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */
@@ -299,7 +291,7 @@
    png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */
    png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */
 #endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
-#endif
+#endif /* READ_GAMMA */
 
 #if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED)
    png_color_8 sig_bit;       /* significant bits in each available channel */
@@ -349,8 +341,8 @@
 /* To do: remove this from libpng-1.7 */
 #ifdef PNG_TIME_RFC1123_SUPPORTED
    char time_buffer[29]; /* String to hold RFC 1123 time text */
-#endif
-#endif
+#endif /* TIME_RFC1123 */
+#endif /* LIBPNG_VER < 10700 */
 
 /* New members added in libpng-1.0.6 */
 
@@ -360,8 +352,8 @@
    png_voidp user_chunk_ptr;
 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED
    png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
-#endif
-#endif
+#endif /* READ_USER_CHUNKS */
+#endif /* USER_CHUNKS */
 
 #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
    int          unknown_default; /* As PNG_HANDLE_* */
@@ -468,11 +460,5 @@
 /* New member added in libpng-1.5.7 */
    void (*read_filter[PNG_FILTER_VALUE_LAST-1])(png_row_infop row_info,
       png_bytep row, png_const_bytep prev_row);
-
-#ifdef PNG_READ_SUPPORTED
-#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED)
-   png_colorspace   colorspace;
-#endif
-#endif
 };
 #endif /* PNGSTRUCT_H */

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngtest.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngtest.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngtest.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -50,7 +50,7 @@
 #define STDERR stdout
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_46 Your_png_h_is_not_version_1_6_46;
+typedef png_libpng_version_1_6_48 Your_png_h_is_not_version_1_6_48;
 
 /* Ensure that all version numbers in png.h are consistent with one another. */
 #if (PNG_LIBPNG_VER != PNG_LIBPNG_VER_MAJOR * 10000 + \
@@ -60,7 +60,7 @@
                                  PNG_LIBPNG_VER_MINOR) || \
     (PNG_LIBPNG_VER_SHAREDLIB != PNG_LIBPNG_VER_SONUM) || \
     (PNG_LIBPNG_VER_SHAREDLIB != PNG_LIBPNG_VER_DLLNUM)
-#  error "Inconsistent version numbers in png.h"
+#  error Inconsistent version numbers in "png.h"
 #endif
 
 /* In version 1.6.1, we added support for the configure test harness, which
@@ -103,10 +103,6 @@
 #  define PNG_ZBUF_SIZE 8192
 #endif
 
-#ifndef PNG_STDIO_SUPPORTED
-typedef FILE * png_FILE_p;
-#endif
-
 #ifndef PNG_DEBUG
 #  define PNG_DEBUG 0
 #endif
@@ -120,7 +116,7 @@
 #  define pngtest_debug1(m, p1)     ((void)0)
 #  define pngtest_debug2(m, p1, p2) ((void)0)
 #else /* PNG_DEBUG < 0 */
-#  error "Bad PNG_DEBUG value"
+#  error Bad PNG_DEBUG value
 #endif
 
 /* Turn on CPU timing
@@ -403,7 +399,7 @@
     */
    io_ptr = png_get_io_ptr(png_ptr);
    if (io_ptr != NULL)
-      check = fread(data, 1, length, (png_FILE_p)io_ptr);
+      check = fread(data, 1, length, (FILE *)io_ptr);
 
    if (check != length)
       png_error(png_ptr, "Read Error");
@@ -437,7 +433,7 @@
    if (png_ptr == NULL)
       png_error(png_ptr, "pngtest_write_data: bad png_ptr");
 
-   check = fwrite(data, 1, length, (png_FILE_p)png_get_io_ptr(png_ptr));
+   check = fwrite(data, 1, length, (FILE *)png_get_io_ptr(png_ptr));
 
    if (check != length)
       png_error(png_ptr, "Write Error");
@@ -858,8 +854,8 @@
 static int
 test_one_file(const char *inname, const char *outname)
 {
-   static png_FILE_p fpin;
-   static png_FILE_p fpout;  /* "static" prevents setjmp corruption */
+   static FILE *fpin;
+   static FILE *fpout;  /* "static" prevents setjmp corruption */
    pngtest_error_parameters error_parameters;
    png_structp read_ptr;
    png_infop read_info_ptr, end_info_ptr;
@@ -2137,6 +2133,7 @@
       fprintf(STDERR, " libpng FAILS test\n");
 
    dummy_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+#ifdef PNG_USER_LIMITS_SUPPORTED
    fprintf(STDERR, " Default limits:\n");
    fprintf(STDERR, "  width_max  = %lu\n",
        (unsigned long) png_get_user_width_max(dummy_ptr));
@@ -2152,6 +2149,7 @@
    else
       fprintf(STDERR, "  malloc_max = %lu\n",
           (unsigned long) png_get_chunk_malloc_max(dummy_ptr));
+#endif
    png_destroy_read_struct(&dummy_ptr, NULL, NULL);
 
    return (ierror != 0);

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngwio.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngwio.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngwio.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pngwio.c - functions for data output
  *
- * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2014,2016,2018 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -54,7 +54,7 @@
    if (png_ptr == NULL)
       return;
 
-   check = fwrite(data, 1, length, (png_FILE_p)(png_ptr->io_ptr));
+   check = fwrite(data, 1, length, (FILE *)png_ptr->io_ptr);
 
    if (check != length)
       png_error(png_ptr, "Write Error");
@@ -77,12 +77,12 @@
 void PNGCBAPI
 png_default_flush(png_structp png_ptr)
 {
-   png_FILE_p io_ptr;
+   FILE *io_ptr;
 
    if (png_ptr == NULL)
       return;
 
-   io_ptr = png_voidcast(png_FILE_p, (png_ptr->io_ptr));
+   io_ptr = png_voidcast(FILE *, png_ptr->io_ptr);
    fflush(io_ptr);
 }
 #  endif

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngwrite.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngwrite.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngwrite.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -181,7 +181,6 @@
    }
 #endif
 
-#ifdef PNG_COLORSPACE_SUPPORTED
 #  ifdef PNG_WRITE_cICP_SUPPORTED /* Priority 4 */
    if ((info_ptr->valid & PNG_INFO_cICP) != 0)
       {
@@ -193,50 +192,28 @@
       }
 #  endif
 
-      /* PNG v3 change: it is now permitted to write both sRGB and ICC profiles,
-       * however because the libpng code auto-generates an sRGB for the
-       * corresponding ICC profiles and because PNG v2 disallowed this we need
-       * to only write one.
-       *
-       * Remove the PNG v2 warning about writing an sRGB ICC profile as well
-       * because it's invalid with PNG v3.
-       */
 #  ifdef PNG_WRITE_iCCP_SUPPORTED /* Priority 3 */
-         if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) == 0 &&
-             (info_ptr->valid & PNG_INFO_iCCP) != 0)
+         if ((info_ptr->valid & PNG_INFO_iCCP) != 0)
          {
             png_write_iCCP(png_ptr, info_ptr->iccp_name,
-                info_ptr->iccp_profile);
+                info_ptr->iccp_profile, info_ptr->iccp_proflen);
          }
-#     ifdef PNG_WRITE_sRGB_SUPPORTED
-         else
-#     endif
 #  endif
 
 #  ifdef PNG_WRITE_sRGB_SUPPORTED /* Priority 2 */
-         if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) == 0 &&
-             (info_ptr->valid & PNG_INFO_sRGB) != 0)
-            png_write_sRGB(png_ptr, info_ptr->colorspace.rendering_intent);
+         if ((info_ptr->valid & PNG_INFO_sRGB) != 0)
+            png_write_sRGB(png_ptr, info_ptr->rendering_intent);
 #  endif /* WRITE_sRGB */
-#endif /* COLORSPACE */
 
-#ifdef PNG_GAMMA_SUPPORTED
 #  ifdef PNG_WRITE_gAMA_SUPPORTED /* Priority 1 */
-      if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) == 0 &&
-          (info_ptr->colorspace.flags & PNG_COLORSPACE_FROM_gAMA) != 0 &&
-          (info_ptr->valid & PNG_INFO_gAMA) != 0)
-         png_write_gAMA_fixed(png_ptr, info_ptr->colorspace.gamma);
+      if ((info_ptr->valid & PNG_INFO_gAMA) != 0)
+         png_write_gAMA_fixed(png_ptr, info_ptr->gamma);
 #  endif
-#endif
 
-#ifdef PNG_COLORSPACE_SUPPORTED
 #  ifdef PNG_WRITE_cHRM_SUPPORTED /* Also priority 1 */
-         if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) == 0 &&
-             (info_ptr->colorspace.flags & PNG_COLORSPACE_FROM_cHRM) != 0 &&
-             (info_ptr->valid & PNG_INFO_cHRM) != 0)
-            png_write_cHRM_fixed(png_ptr, &info_ptr->colorspace.end_points_xy);
+         if ((info_ptr->valid & PNG_INFO_cHRM) != 0)
+            png_write_cHRM_fixed(png_ptr, &info_ptr->cHRM);
 #  endif
-#endif
 
       png_ptr->mode |= PNG_WROTE_INFO_BEFORE_PLTE;
    }
@@ -2356,7 +2333,7 @@
 png_image_write_to_stdio(png_imagep image, FILE *file, int convert_to_8bit,
     const void *buffer, png_int_32 row_stride, const void *colormap)
 {
-   /* Write the image to the given (FILE*). */
+   /* Write the image to the given FILE object. */
    if (image != NULL && image->version == PNG_IMAGE_VERSION)
    {
       if (file != NULL && buffer != NULL)

Modified: branches/stable/source/src/libs/libpng/libpng-src/pngwutil.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/pngwutil.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/pngwutil.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pngwutil.c - utilities to write a PNG file
  *
- * Copyright (c) 2018-2024 Cosmin Truta
+ * Copyright (c) 2018-2025 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
  * Copyright (c) 1996-1997 Andreas Dilger
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -1132,10 +1132,9 @@
 /* Write an iCCP chunk */
 void /* PRIVATE */
 png_write_iCCP(png_structrp png_ptr, png_const_charp name,
-    png_const_bytep profile)
+    png_const_bytep profile, png_uint_32 profile_len)
 {
    png_uint_32 name_len;
-   png_uint_32 profile_len;
    png_byte new_name[81]; /* 1 byte for the compression byte */
    compression_state comp;
    png_uint_32 temp;
@@ -1148,11 +1147,12 @@
    if (profile == NULL)
       png_error(png_ptr, "No profile for iCCP chunk"); /* internal error */
 
-   profile_len = png_get_uint_32(profile);
-
    if (profile_len < 132)
       png_error(png_ptr, "ICC profile too short");
 
+   if (png_get_uint_32(profile) != profile_len)
+      png_error(png_ptr, "Incorrect data in iCCP");
+
    temp = (png_uint_32) (*(profile+8));
    if (temp > 3 && (profile_len & 0x03))
       png_error(png_ptr, "ICC profile length invalid (not a multiple of 4)");

Modified: branches/stable/source/src/libs/libpng/libpng-src/powerpc/filter_vsx_intrinsics.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/powerpc/filter_vsx_intrinsics.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/powerpc/filter_vsx_intrinsics.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -23,7 +23,7 @@
 #if PNG_POWERPC_VSX_OPT > 0
 
 #ifndef __VSX__
-#  error "This code requires VSX support (POWER7 and later). Please provide -mvsx compiler flag."
+#  error This code requires VSX support (POWER7 and later); please compile with -mvsx
 #endif
 
 #define vec_ld_unaligned(vec,data) vec = vec_vsx_ld(0,data)

Modified: branches/stable/source/src/libs/libpng/libpng-src/powerpc/powerpc_init.c
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/powerpc/powerpc_init.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/powerpc/powerpc_init.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -46,7 +46,7 @@
 #include PNG_POWERPC_VSX_FILE
 
 #else  /* PNG_POWERPC_VSX_FILE */
-#  error "PNG_POWERPC_VSX_FILE undefined: no support for run-time POWERPC VSX checks"
+#  error PNG_POWERPC_VSX_FILE undefined: no support for run-time POWERPC VSX checks
 #endif /* PNG_POWERPC_VSX_FILE */
 #endif /* PNG_POWERPC_VSX_CHECK_SUPPORTED */
 

Added: branches/stable/source/src/libs/libpng/libpng-src/scripts/cmake/PNGCheckLibconf.cmake
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/scripts/cmake/PNGCheckLibconf.cmake	                        (rev 0)
+++ branches/stable/source/src/libs/libpng/libpng-src/scripts/cmake/PNGCheckLibconf.cmake	2025-05-17 22:44:20 UTC (rev 964)
@@ -0,0 +1,45 @@
+# PNGConfig.cmake
+# Utility functions for configuring and building libpng
+
+# Copyright (c) 2025 Cosmin Truta
+#
+# Use, modification and distribution are subject to
+# the same licensing terms and conditions as libpng.
+# Please see the copyright notice in png.h or visit
+# http://libpng.org/pub/png/src/libpng-LICENSE.txt
+#
+# SPDX-License-Identifier: libpng-2.0
+
+# Check libconf file (pnglibconf.h.* or *.dfa):
+# png_check_libconf([HEADER <file>] [DFA_XTRA <file>])
+function(png_check_libconf)
+  set(options)
+  set(oneValueArgs HEADER DFA_XTRA)
+  set(multiValueArgs)
+
+  cmake_parse_arguments(_CHK "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+
+  if(_CHK_HEADER AND _CHK_DFA_XTRA)
+    message(FATAL_ERROR "png_check_libconf: Mutually-exclusive arguments: HEADER and DFA_XTRA")
+  endif()
+
+  if(_CHK_HEADER)
+    if(EXISTS "${_CHK_HEADER}")
+      if("x${_CHK_HEADER}" STREQUAL "x${PNG_LIBCONF_HEADER_PREBUILT}")
+        message(STATUS "Using standard libconf header: ${_CHK_HEADER}")
+      else()
+        message(STATUS "Using custom libconf header: ${_CHK_HEADER}")
+      endif()
+    else()
+      message(SEND_ERROR "Could not find libconf header: ${_CHK_HEADER}")
+    endif()
+  else()
+    if("x${_CHK_DFA_XTRA}" STREQUAL "x")
+      message(STATUS "Creating standard configuration")
+    elseif(EXISTS "${_CHK_DFA_XTRA}")
+      message(STATUS "Creating custom configuration with DFA_XTRA file: ${_CHK_DFA_XTRA}")
+    else()
+      message(SEND_ERROR "Could not find DFA_XTRA file: ${_CHK_DFA_XTRA}")
+    endif()
+  endif()
+endfunction()

Modified: branches/stable/source/src/libs/libpng/libpng-src/scripts/libpng-config-head.in
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/scripts/libpng-config-head.in	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/scripts/libpng-config-head.in	2025-05-17 22:44:20 UTC (rev 964)
@@ -11,7 +11,7 @@
 
 # Modeled after libxml-config.
 
-version=1.6.46
+version=1.6.48
 prefix=""
 libdir=""
 libs=""

Modified: branches/stable/source/src/libs/libpng/libpng-src/scripts/libpng.pc.in
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/scripts/libpng.pc.in	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/scripts/libpng.pc.in	2025-05-17 22:44:20 UTC (rev 964)
@@ -5,6 +5,6 @@
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.6.46
+Version: 1.6.48
 Libs: -L${libdir} -lpng16
 Cflags: -I${includedir}

Modified: branches/stable/source/src/libs/libpng/libpng-src/scripts/pnglibconf.dfa
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/scripts/pnglibconf.dfa	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/scripts/pnglibconf.dfa	2025-05-17 22:44:20 UTC (rev 964)
@@ -711,7 +711,7 @@
 # processing, it just validates the data in the PNG file.
 
 option GAMMA disabled
-option COLORSPACE enables GAMMA disabled
+option COLORSPACE disabled
 
 # When an ICC profile is read, or png_set, it will be checked for a match
 # against known sRGB profiles if the sRGB handling is enabled.  The
@@ -851,9 +851,9 @@
 chunk eXIf
 chunk gAMA enables GAMMA
 chunk hIST
-chunk iCCP enables COLORSPACE, GAMMA
+chunk iCCP enables GAMMA
 chunk iTXt enables TEXT
-chunk mDCV
+chunk mDCV enables COLORSPACE
 chunk oFFs
 chunk pCAL
 chunk pHYs
@@ -860,7 +860,7 @@
 chunk sBIT
 chunk sCAL
 chunk sPLT
-chunk sRGB enables COLORSPACE, GAMMA, SET_OPTION
+chunk sRGB enables GAMMA, SET_OPTION
 chunk tEXt requires TEXT
 chunk tIME
 chunk tRNS
@@ -995,7 +995,8 @@
       READ_EXPAND, READ_16BIT, READ_EXPAND_16, READ_SCALE_16_TO_8,
       READ_RGB_TO_GRAY, READ_ALPHA_MODE, READ_BACKGROUND, READ_STRIP_ALPHA,
       READ_FILLER, READ_SWAP, READ_PACK, READ_GRAY_TO_RGB, READ_GAMMA,
-      READ_tRNS, READ_bKGD, READ_gAMA, READ_cHRM, READ_sRGB, READ_sBIT
+      READ_tRNS, READ_bKGD, READ_gAMA, READ_cHRM, READ_sRGB, READ_mDCV,
+      READ_cICP, READ_sBIT
 
 # AFIRST and BGR read options:
 #  Prior to libpng 1.6.8 these were disabled but switched on if the low level

Modified: branches/stable/source/src/libs/libpng/libpng-src/scripts/pnglibconf.h.prebuilt
===================================================================
--- branches/stable/source/src/libs/libpng/libpng-src/scripts/pnglibconf.h.prebuilt	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/libpng-src/scripts/pnglibconf.h.prebuilt	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* pnglibconf.h - library build configuration */
 
-/* libpng version 1.6.46 */
+/* libpng version 1.6.48 */
 
 /* Copyright (c) 2018-2025 Cosmin Truta */
 /* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */

Modified: branches/stable/source/src/libs/libpng/version.ac
===================================================================
--- branches/stable/source/src/libs/libpng/version.ac	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/libs/libpng/version.ac	2025-05-17 22:44:20 UTC (rev 964)
@@ -8,4 +8,4 @@
 dnl --------------------------------------------------------
 dnl
 dnl  m4-include this file to define the current libpng version
-m4_define([libpng_version], [1.6.46])
+m4_define([libpng_version], [1.6.48])

Modified: branches/stable/source/src/tardate.ac
===================================================================
--- branches/stable/source/src/tardate.ac	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/tardate.ac	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,5 +1,5 @@
-dnl $Id: tardate.ac 70573 2024-03-10 21:37:05Z karl $
-dnl   Copyright 2016-2024 Karl Berry <tex-live at tug.org>
+dnl $Id: tardate.ac 74485 2025-03-06 22:52:00Z karl $
+dnl   Copyright 2016-2025 Karl Berry <tex-live at tug.org>
 dnl   Copyright 2010-2015 Peter Breitenlohner <tex-live at tug.org>
 dnl
 dnl   This file is free software; the copyright holder
@@ -9,4 +9,4 @@
 dnl --------------------------------------------------------
 dnl
 dnl  m4-include this file to define the current TeX Live tarball version
-m4_define([tex_live_tardate], [2024-03-10])
+m4_define([tex_live_tardate], [2025-03-07])

Modified: branches/stable/source/src/texk/README
===================================================================
--- branches/stable/source/src/texk/README	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/README	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,4 @@
-$Id: README 73838 2025-02-09 23:45:32Z takuji $
+$Id: README 74361 2025-02-28 23:31:39Z karl $
 Copyright 2006-2025 TeX Users Group.
 You may freely use, modify and/or distribute this file.
 
@@ -67,8 +67,8 @@
   https://github.com/mgieseki/dvisvgm
   https://ctan.org/pkg/dvisvgm
 
-gregorio 6.0.0 - checked 14mar21
-  https://mirror.ctan.org/support/gregoriotex/gregorio-6.0.0.zip
+gregorio 6.1.0 - checked 28feb25
+  https://mirror.ctan.org/support/gregoriotex/
 
 gsftopk - from Paul Vojta's xdvi.
 

Modified: branches/stable/source/src/texk/configure
===================================================================
--- branches/stable/source/src/texk/configure	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/configure	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for TeX Live texk 2025.
+# Generated by GNU Autoconf 2.72 for TeX Live texk 2026/dev.
 #
 # Report bugs to <tex-live at tug.org>.
 #
@@ -603,8 +603,8 @@
 # Identity of this package.
 PACKAGE_NAME='TeX Live texk'
 PACKAGE_TARNAME='tex-live-texk'
-PACKAGE_VERSION='2025'
-PACKAGE_STRING='TeX Live texk 2025'
+PACKAGE_VERSION='2026/dev'
+PACKAGE_STRING='TeX Live texk 2026/dev'
 PACKAGE_BUGREPORT='tex-live at tug.org'
 PACKAGE_URL=''
 
@@ -1471,7 +1471,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures TeX Live texk 2025 to adapt to many kinds of systems.
+'configure' configures TeX Live texk 2026/dev to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1542,7 +1542,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of TeX Live texk 2025:";;
+     short | recursive ) echo "Configuration of TeX Live texk 2026/dev:";;
    esac
   cat <<\_ACEOF
 
@@ -1839,7 +1839,7 @@
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-TeX Live texk configure 2025
+TeX Live texk configure 2026/dev
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -1999,7 +1999,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by TeX Live texk $as_me 2025, which was
+It was created by TeX Live texk $as_me 2026/dev, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -7617,7 +7617,7 @@
 
 # Define the identity of the package.
  PACKAGE='tex-live-texk'
- VERSION='2025'
+ VERSION='2026/dev'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -8722,7 +8722,7 @@
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by TeX Live texk $as_me 2025, which was
+This file was extended by TeX Live texk $as_me 2026/dev, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -8781,7 +8781,7 @@
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-TeX Live texk config.status 2025
+TeX Live texk config.status 2026/dev
 configured by $0, generated by GNU Autoconf 2.72,
   with options \\"\$ac_cs_config\\"
 

Modified: branches/stable/source/src/texk/kpathsea/ChangeLog
===================================================================
--- branches/stable/source/src/texk/kpathsea/ChangeLog	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/kpathsea/ChangeLog	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,3 +1,29 @@
+2025-05-04  Karl Berry  <karl at freefriends.org>
+
+	* expand.c (kpathsea_expand_kpse_dot): doc fix.
+
+2025-04-18  Karl Berry  <karl at freefriends.org>
+
+	* c-ctype.h (kpse_isascii): new macro, since isascii() can
+	apparently longer be used portably, thanks to POSIX and gcc 15.
+	(ISALNUM, ..., ISBLANK): use it. Discussion:
+	https://tug.org/pipermail/tlbuild/2025q2/005743.html
+
+2025-04-08  Karl Berry  <karl at freefriends.org>
+
+	* c-memstr.h (strtok, strstr): remove () fallback declarations,
+	since C23 considers that the same as (void). Apparently
+	HAVE_STRING_H was not defined, either.
+	Report from Hilmar, 3 Apr 2025 23:54:54.
+
+2025-03-08  Karl Berry  <karl at tug.org>
+
+	* version.ac: 6.4.2/dev.
+
+2025-03-07  Karl Berry  <karl at tug.org>
+
+	* TL'25 release.
+
 2025-02-12  Karl Berry  <karl at freefriends.org>
 
 	* texmf.cnf (shell_escape_commands): doc link to

Modified: branches/stable/source/src/texk/kpathsea/NEWS
===================================================================
--- branches/stable/source/src/texk/kpathsea/NEWS	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/kpathsea/NEWS	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,7 +1,7 @@
-$Id: NEWS 73591 2025-01-25 18:41:15Z karl $
+$Id: NEWS 74485 2025-03-06 22:52:00Z karl $
 This file records noteworthy changes.  (Public domain.)
 
-6.4.1 (for TeX Live 2025)
+6.4.1 (for TeX Live 2025, 7 March 2025)
 * kpsewhich outputs a blank line when a given file cannot be found,
   if more than one file to search for is specified.  
 

Modified: branches/stable/source/src/texk/kpathsea/c-auto.in
===================================================================
--- branches/stable/source/src/texk/kpathsea/c-auto.in	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/kpathsea/c-auto.in	2025-05-17 22:44:20 UTC (rev 964)
@@ -23,7 +23,7 @@
 #define KPATHSEA_C_AUTO_H
 
 /* kpathsea: the version string. */
-#define KPSEVERSION "kpathsea version 6.4.1"
+#define KPSEVERSION "kpathsea version 6.4.2/dev"
 
 /* Define to 1 if the 'closedir' function returns void instead of int. */
 #undef CLOSEDIR_VOID

Modified: branches/stable/source/src/texk/kpathsea/c-ctype.h
===================================================================
--- branches/stable/source/src/texk/kpathsea/c-ctype.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/kpathsea/c-ctype.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 /* c-ctype.h: ASCII-safe versions of the <ctype.h> macros.
 
-   Copyright 1992, 1994, 2008, 2010, 2011, 2015 Karl Berry.
+   Copyright 1992, 1994, 2008, 2010, 2011, 2015, 2025 Karl Berry.
    Copyright 1998, 2000, 2005 Olaf Weber.
 
    This library is free software; you can redistribute it and/or
@@ -28,28 +28,42 @@
 #endif
 #endif
 
-#define ISALNUM(c) (isascii (c) && isalnum((unsigned char)c))
-#define ISALPHA(c) (isascii (c) && isalpha((unsigned char)c))
-#define ISASCII isascii
-#define ISCNTRL(c) (isascii (c) && iscntrl((unsigned char)c))
-#define ISDIGIT(c) (isascii (c) && isdigit ((unsigned char)c))
-#define ISGRAPH(c) (isascii (c) && isgraph((unsigned char)c))
-#define ISLOWER(c) (isascii (c) && islower((unsigned char)c))
-#define ISPRINT(c) (isascii (c) && isprint((unsigned char)c))
-#define ISPUNCT(c) (isascii (c) && ispunct((unsigned char)c))
-#define ISSPACE(c) (isascii (c) && isspace((unsigned char)c))
-#define ISUPPER(c) (isascii (c) && isupper((unsigned char)c))
-#define ISXDIGIT(c) (isascii (c) && isxdigit((unsigned char)c))
+/* However, we don't use isascii, since POSIX + compilers have made it
+   impossible to do so portably (first failure reports for gcc 15;
+   underlying reason is unclear). Leave the definition above just
+   because we've always defined it, but for our use here, apparently we
+   now have to define and use our own macro.  Discussion:
+   https://tug.org/pipermail/tlbuild/2025q2/005743.html */
+
+/* We want to possibly accept integers as an argument, because of the
+   old problems described in the comment below. So cast to unsigned
+   since otherwise checking for (i)>0 runs the risk of more useless
+   compiler warnings/errors about redundant comparisons.  */
+#define kpse_isascii(i) ((unsigned) (i) <= 127)
+
+#define ISALNUM(c) (kpse_isascii (c) && isalnum((unsigned char)c))
+#define ISALPHA(c) (kpse_isascii (c) && isalpha((unsigned char)c))
+#define KPSE_ISASCII kpse_isascii
+#define ISCNTRL(c) (kpse_isascii (c) && iscntrl((unsigned char)c))
+#define ISDIGIT(c) (kpse_isascii (c) && isdigit ((unsigned char)c))
+#define ISGRAPH(c) (kpse_isascii (c) && isgraph((unsigned char)c))
+#define ISLOWER(c) (kpse_isascii (c) && islower((unsigned char)c))
+#define ISPRINT(c) (kpse_isascii (c) && isprint((unsigned char)c))
+#define ISPUNCT(c) (kpse_isascii (c) && ispunct((unsigned char)c))
+#define ISSPACE(c) (kpse_isascii (c) && isspace((unsigned char)c))
+#define ISUPPER(c) (kpse_isascii (c) && isupper((unsigned char)c))
+#define ISXDIGIT(c) (kpse_isascii (c) && isxdigit((unsigned char)c))
 #define TOASCII toascii
 #define TOLOWER(c) (ISUPPER (c) ? tolower ((unsigned char)c) : (c))
 #define TOUPPER(c) (ISLOWER (c) ? toupper ((unsigned char)c) : (c))
 
-/* This isn't part of the usual <ctype.h>, but it's useful sometimes.  */
+/* This isn't part of the usual <ctype.h>, but it's useful sometimes.
+   We don't consider vertical tab blank, since in normal use, it isn't.  */
 #ifndef isblank
 #define isblank(c) ((c) == ' ' || (c) == '\t')
 #endif
 
-#define ISBLANK(c) (isascii (c) && isblank ((unsigned char)c))
+#define ISBLANK(c) (kpse_isascii (c) && isblank ((unsigned char)c))
 
 
 /* Here's why this mess is necessary:
@@ -70,7 +84,7 @@
   own versions of the ctype macros.
 
   A pretty clean approach to using <ctype.h> and isascii was
-  suggested by David MacKenzie:
+  suggested by David MacKenzie: [but as of 2025, no longer works; see above]
 
   #ifndef isascii
   #define isascii(c) 1

Modified: branches/stable/source/src/texk/kpathsea/c-memstr.h
===================================================================
--- branches/stable/source/src/texk/kpathsea/c-memstr.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/kpathsea/c-memstr.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -53,11 +53,4 @@
 #define memcpy(to, from, len) bcopy ((from), (to), (len))
 #endif
 
-#if !defined(HAVE_STRING_H)
-extern char *strtok ();
-#ifndef strstr
-extern char *strstr ();
-#endif
-#endif
-
 #endif /* not KPATHSEA_C_MEMSTR_H */

Modified: branches/stable/source/src/texk/kpathsea/configure
===================================================================
--- branches/stable/source/src/texk/kpathsea/configure	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/kpathsea/configure	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for Kpathsea 6.4.1.
+# Generated by GNU Autoconf 2.72 for Kpathsea 6.4.2/dev.
 #
 # Report bugs to <tex-k at tug.org>.
 #
@@ -614,8 +614,8 @@
 # Identity of this package.
 PACKAGE_NAME='Kpathsea'
 PACKAGE_TARNAME='kpathsea'
-PACKAGE_VERSION='6.4.1'
-PACKAGE_STRING='Kpathsea 6.4.1'
+PACKAGE_VERSION='6.4.2/dev'
+PACKAGE_STRING='Kpathsea 6.4.2/dev'
 PACKAGE_BUGREPORT='tex-k at tug.org'
 PACKAGE_URL=''
 
@@ -1376,7 +1376,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures Kpathsea 6.4.1 to adapt to many kinds of systems.
+'configure' configures Kpathsea 6.4.2/dev to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1447,7 +1447,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of Kpathsea 6.4.1:";;
+     short | recursive ) echo "Configuration of Kpathsea 6.4.2/dev:";;
    esac
   cat <<\_ACEOF
 
@@ -1576,7 +1576,7 @@
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-Kpathsea configure 6.4.1
+Kpathsea configure 6.4.2/dev
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -2357,7 +2357,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by Kpathsea $as_me 6.4.1, which was
+It was created by Kpathsea $as_me 6.4.2/dev, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -3137,14 +3137,14 @@
 
 
 
-KPSEVERSION=6.4.1
+KPSEVERSION=6.4.2/dev
 
 
-KPSE_LT_VERSINFO=10:1:4
+KPSE_LT_VERSINFO=10:2:4
 
 
 
- WEB2CVERSION=" (TeX Live 2025)"
+ WEB2CVERSION=" (TeX Live 2026/dev)"
 
 
 am__api_version='1.17'
@@ -9259,7 +9259,7 @@
 
 # Define the identity of the package.
  PACKAGE='kpathsea'
- VERSION='6.4.1'
+ VERSION='6.4.2/dev'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -16888,7 +16888,7 @@
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by Kpathsea $as_me 6.4.1, which was
+This file was extended by Kpathsea $as_me 6.4.2/dev, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -16956,7 +16956,7 @@
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-Kpathsea config.status 6.4.1
+Kpathsea config.status 6.4.2/dev
 configured by $0, generated by GNU Autoconf 2.72,
   with options \\"\$ac_cs_config\\"
 

Modified: branches/stable/source/src/texk/kpathsea/expand.c
===================================================================
--- branches/stable/source/src/texk/kpathsea/expand.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/kpathsea/expand.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,7 +1,7 @@
 /* expand.c: general expansion.
 
    Copyright 1993, 1994, 1995, 1996, 1997, 2005, 2008, 2009, 2011,
-             2012, 2016, 2017 Karl Berry.
+             2012, 2016, 2017, 2025 Karl Berry.
    Copyright 1997-2005 Olaf Weber.
 
    This library is free software; you can redistribute it and/or
@@ -50,7 +50,7 @@
 static str_list_type brace_expand (kpathsea, const_string*);
 
 /* If $KPSE_DOT is defined in the environment, prepend it to any relative
-   path components. */
+   path components in PATH and return result in new memory.  */
 
 static string
 kpathsea_expand_kpse_dot (kpathsea kpse, string path)
@@ -63,7 +63,7 @@
 
   if (kpse_dot == NULL)
     return path;
-  ret = (string)xmalloc(1);
+  ret = (string) xmalloc(1);
   *ret = 0;
 
 #ifdef MSDOS
@@ -84,26 +84,33 @@
        elt = kpathsea_path_element (kpse, NULL)) {
     string save_ret = ret;
     boolean ret_copied = true;
-    /* We assume that the !! magic is only used on absolute components.
-       Single "." gets special treatment, as does "./" or its equivalent. */
+    /* We assume that the !! magic is only used on absolute components.  */
     if (kpathsea_absolute_p (kpse, elt, false)
         || (elt[0] == '!' && elt[1] == '!')) {
-      ret = concat3(ret, elt, ENV_SEP_STRING);
+      ret = concat3 (ret, elt, ENV_SEP_STRING);
+
+    /* Path element is sole '.' -> replace with kpse_dot.  */
     } else if (elt[0] == '.' && elt[1] == 0) {
       ret = concat3 (ret, kpse_dot, ENV_SEP_STRING);
+
 #ifndef VMS
+    /* Path element is './foo' -> replace the '.' with kpse_dot.  */
     } else if (elt[0] == '.' && IS_DIR_SEP(elt[1])) {
       ret = concatn (ret, kpse_dot, elt + 1, ENV_SEP_STRING, NULL);
+    
+    /* Path element is anything element -> prepend "kpse_dot/" to elt.  */
     } else if (*elt) {
       ret = concatn (ret, kpse_dot, DIR_SEP_STRING, elt, ENV_SEP_STRING, NULL);
 #endif
+
     } else {
       /* omit empty path elements from TEXMFCNF.
-         See http://bugs.debian.org/358330.  */
+         See https://bugs.debian.org/358330.  */
       ret_copied = false;
     }
-    if (ret_copied)
+    if (ret_copied) {
       free (save_ret);
+    }
   }
 
 #ifdef MSDOS

Modified: branches/stable/source/src/texk/kpathsea/version.ac
===================================================================
--- branches/stable/source/src/texk/kpathsea/version.ac	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/kpathsea/version.ac	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,4 @@
-dnl $Id: version.ac 73591 2025-01-25 18:41:15Z karl $
+dnl $Id: version.ac 74529 2025-03-08 18:17:45Z karl $
 dnl   Copyright 2016-2025 Karl Berry <tex-live at tug.org>
 dnl   Copyright 2011-2015 Peter Breitenlohner <tex-live at tug.org>
 dnl
@@ -23,4 +23,4 @@
 dnl --------------------------------------------------------
 dnl
 dnl This file is m4-included from configure.ac.
-m4_define([kpse_version], [6.4.1])
+m4_define([kpse_version], [6.4.2/dev])

Modified: branches/stable/source/src/texk/tests/TeXLive/TLUtils.pm
===================================================================
--- branches/stable/source/src/texk/tests/TeXLive/TLUtils.pm	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/tests/TeXLive/TLUtils.pm	2025-05-17 22:44:20 UTC (rev 964)
@@ -7,7 +7,7 @@
 
 package TeXLive::TLUtils;
 
-my $svnrev = '$Revision: 73770 $';
+my $svnrev = '$Revision: 74083 $';
 my $_modulerevision = ($svnrev =~ m/: ([0-9]+) /) ? $1 : "unknown";
 sub module_revision { return $_modulerevision; }
 
@@ -3665,6 +3665,9 @@
     tlwarn("Updating $dest, backup copy in $dest.backup\n");
     copy("-f", $dest, "$dest.backup");
   }
+  # ensure destination directory exists.
+  my $destdir = dirname ($dest);
+  -d $destdir || mkdirhier $destdir; # if fails, the next open will die.
   open(OUTFILE,">$dest")
     or die("Cannot open $dest for writing: $!");
 
@@ -3684,6 +3687,7 @@
   my $default_lefthyphenmin = -1;
   my $default_righthyphenmin = -1;
   $ret{"synonyms"} = [];
+  $ret{"databases"} = ["dat", "def", "lua"];
   for my $p (quotewords('\s+', 0, "$line")) {
     my ($a, $b) = split /=/, $p;
     if ($a eq "name") {
@@ -3738,7 +3742,7 @@
     }
     if ($a eq "databases") {
       if (!$b) {
-        $ret{"error"} = "AddHyphen line needs databases=something: $line";
+        $ret{"error"} = "AddHyphen line needs databases=foo[,bar]: $line";
         return %ret;
       }
       @{$ret{"databases"}} = split /,/, $b;
@@ -3746,7 +3750,7 @@
     }
     if ($a eq "synonyms") {
       if (!$b) {
-        $ret{"error"} = "AddHyphen line needs synonyms=something: $line";
+        $ret{"error"} = "AddHyphen line needs synonyms=foo[,bar]: $line";
         return %ret;
       }
       @{$ret{"synonyms"}} = split /,/, $b;
@@ -3776,15 +3780,6 @@
                     . " righthyphenmin ($ret{righthyphenmin}): $line";
     return %ret;    
   }
-  # this default value couldn't be set earlier
-  if (not defined($ret{"databases"})) {
-    if (defined $ret{"file_patterns"} or defined $ret{"file_exceptions"}
-        or defined $ret{"luaspecial"}) {
-      @{$ret{"databases"}} = qw(dat def lua);
-    } else {
-      @{$ret{"databases"}} = qw(dat def);
-    }
-  }
   return %ret;
 }
 

Modified: branches/stable/source/src/texk/web2c/ChangeLog
===================================================================
--- branches/stable/source/src/texk/web2c/ChangeLog	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/ChangeLog	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,3 +1,75 @@
+2025-05-05  Karl Berry  <karl at freefriends.org>
+
+	* tex.ch (26.449): avoid spurious additional errors
+	from \mkern <non-mu-dimen-or-skip>. Fix from David Fuchs.
+	Report from Tyge Tiessen,
+        https://tug.org/pipermail/tex-k/2025-January/004150.html
+        https://tug.org/texmfbug/newbug.html#B182muerror
+	* tests/invalidmu.tex: test file.
+
+2025-04-30  Andreas Scherer  <https://ascherer.github.io>
+
+	* cwebboot.cin,
+	* help.h: Restore 'verbose' diagnostics in CWEB.
+
+2025-04-18  Andreas Scherer  <https://ascherer.github.io>
+
+	* ctangleboot.cin,
+	* cwebboot.cin: Amend special characters.
+
+2025-04-17  Andreas Scherer  <https://ascherer.github.io>
+
+	* ctangleboot.cin,
+	* cwebboot.cin: Make proper use of 'ishigh' macro.
+
+2025-04-09  Andreas Scherer  <https://ascherer.github.io>
+
+	* ctangleboot.cin,
+	* cwebboot.cin: Replace type 'boolean' with 'bool.
+
+2025-04-09  Andreas Scherer  <https://ascherer.github.io>
+
+	* ctangleboot.cin,
+	* cwebboot.cin: Revert bool change for C23.
+
+2025-03-31  Andreas Scherer  <https://ascherer.github.io>
+
+	* ctangleboot.cin,
+	* cwebboot.cin: Discard trailing whitespace in macros.
+
+2025-03-12  Andreas Scherer  <https://ascherer.github.io>
+
+	* weave.ch: Prevent get_line() when parsing module name.
+	Report and patch from Benjamin Gray
+	(https://tug.org/pipermail/tex-k/2025-March/004166.html).
+
+2025-03-12  Andreas Scherer  <https://ascherer.github.io>
+
+	* weave.ch: Parse and reject verbatim in TeX part.
+	Report and patch from Benjamin Gray
+	(https://tug.org/pipermail/tex-k/2025-March/004169.html).
+
+2025-03-11  Andreas Scherer  <https://ascherer.github.io>
+
+	* tangle.ch,
+	* tangleboot.pin: Prevent integer overflow in scan_numeric().
+	Report and initial patch from Benjamin Gray
+	(https://tug.org/pipermail/tex-k/2025-March/004165.html).
+
+2025-03-10  Andreas Scherer  <https://ascherer.github.io>
+
+	* tangle.ch,
+	* tangleboot.pin: Reject strings as macro names.
+	Report and initial patch from Benjamin Gray
+	(https://tug.org/pipermail/tex-k/2025-March/004163.html).
+
+2025-03-10  Andreas Scherer  <https://ascherer.github.io>
+
+	* tangle.ch,
+	* tangleboot.pin: Change case for letters only.
+	Report and initial patch from Benjamin Gray
+	(https://tug.org/pipermail/tex-k/2025-March/004161.html).
+
 2025-02-01  Karl Berry  <karl at freefriends.org>
 
 	* tex.ch (24.336): comment out this patch for interactive deletion
@@ -201,13 +273,13 @@
 	* tex.ch (check_outer_validity): don't check unless OK_to_interrupt,
 	to avoid getting into an erroneous state if an \outer token
 	is deleted interactively.
-	Report from Tyge Thiessen:
+	Report from Tyge Tiessen:
 	https://tug.org/pipermail/tex-k/2024-March/004021.html
 	DEK bug entry: https://tug.org/texmfbug/newbug.html#B142outer
 
 2024-06-03  Karl Berry  <karl at freefriends.org>
 
-	* tests/fix-changefile-lines.py: new script from Tyge Thiessen
+	* tests/fix-changefile-lines.py: new script from Tyge Tiessen
 	to update the chapter/section/line numbers in a .ch file,
 	following my request:
 	https://tug.org/pipermail/tex-k/2024-June/004064.html

Modified: branches/stable/source/src/texk/web2c/Makefile.in
===================================================================
--- branches/stable/source/src/texk/web2c/Makefile.in	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/Makefile.in	2025-05-17 22:44:20 UTC (rev 964)
@@ -3256,7 +3256,6 @@
 	ptexdir/ptex.defines ptexdir/COPYRIGHT ptexdir/COPYRIGHT.jis \
 	ptexdir/ChangeLog ptexdir/Changes.txt ptexdir/INSTALL.txt \
 	ptexdir/README.txt $(ptex_tests) $(pweb_tests) \
-	ptexdir/tests/nissya.bst ptexdir/tests/sample.bib \
 	tests/testfield.bst tests/enc-asc.bib tests/enc-jis.bib \
 	tests/enc-sjis.bib tests/enc-euc.bib tests/enc-utf8.bib \
 	tests/enc-utf8a.bib tests/enc-utf8b.bib tests/enc-amb0.bib \
@@ -3264,69 +3263,94 @@
 	tests/enc-e.aux tests/enc-s.aux tests/enc-u.aux \
 	tests/enc-p.bbl tests/enc-ep.bbl tests/enc-sp.bbl \
 	tests/enc-up.bbl tests/memdata1.bst tests/memdata2.bst \
-	tests/memdata3.bst ptexdir/tests/ptex3.tex \
-	ptexdir/tests/ptex3.dvi ptexdir/tests/ptex4.tex \
-	ptexdir/tests/ptex4.dvi ptexdir/tests/ptex3a-jis.typ \
-	ptexdir/tests/ptex3a-utf8.typ ptexdir/tests/ptex4a-jis.typ \
-	ptexdir/tests/ptex4a-utf8.typ ptexdir/tests/goth10.tfm \
-	ptexdir/tests/sample.dvi ptexdir/tests/samplea.typ \
-	ptexdir/tests/min10.pl ptexdir/tests/min10.tfm \
-	ptexdir/tests/tmin10.pl ptexdir/tests/tmin10.tfm \
-	ptexdir/tests/chcode.pl ptexdir/tests/chcode-jis.pl \
-	ptexdir/tests/chcode.tfm ptexdir/tests/chcode-utf8.pl \
-	ptexdir/tests/chcode-euc.pl ptexdir/tests/chcode-sjis.pl \
-	ptexdir/tests/skipjfmp.pl ptexdir/tests/skipjfmp.tfm \
-	ptexdir/ptrip/ptrip.diffs ptexdir/ptrip/texmf.cnf \
-	ptexdir/tests/ctrlsym.tex ptexdir/tests/ctrlsym.log \
-	ptexdir/tests/endlinechar.tex ptexdir/tests/endline.log \
-	ptexdir/tests/control-symbol.tex ptexdir/tests/jctrlsym.log \
-	ptexdir/tests/p-endlinea.typ ptexdir/tests/p-jctrlsyma.typ \
-	ptexdir/tests/let_char_token.tex ptexdir/tests/chartoken.log \
-	ptexdir/tests/ptexlineendmode.tex ptexdir/tests/p-lineenda.typ \
-	ptexdir/tests/printkanji.tex ptexdir/tests/pknj-s.log \
-	ptexdir/tests/pknj-e.log ptexdir/tests/p-pknj-sa.typ \
-	ptexdir/tests/p-pknj-ea.typ ptexdir/tests/ucs.tex \
-	ptexdir/tests/ucs-s.log ptexdir/tests/ucs-e.log \
-	ptexdir/tests/p-jchwidow.log $(uptex_web_srcs) \
+	tests/memdata3.bst ptexdir/ptrip/ptrip.diffs \
+	ptexdir/ptrip/texmf.cnf ptexdir/tests/pver1.tex \
+	ptexdir/tests/pver2.tex ptexdir/tests/ctrlsym.tex \
+	ptexdir/tests/ctrlsym.log ptexdir/tests/endlinechar.tex \
+	ptexdir/tests/endline.log ptexdir/tests/control-symbol.tex \
+	ptexdir/tests/jctrlsym.log ptexdir/tests/p-endlinea.typ \
+	ptexdir/tests/p-jctrlsyma.typ ptexdir/tests/let_char_token.tex \
+	ptexdir/tests/chartoken.log ptexdir/tests/ptexlineendmode.tex \
+	ptexdir/tests/p-lineenda.typ ptexdir/tests/printkanji.tex \
+	ptexdir/tests/pknj-s.log ptexdir/tests/pknj-e.log \
+	ptexdir/tests/p-pknj-sa.typ ptexdir/tests/p-pknj-ea.typ \
+	ptexdir/tests/ucs.tex ptexdir/tests/ucs-s.log \
+	ptexdir/tests/ucs-e.log ptexdir/tests/p-jchwidow-e.log \
+	ptexdir/tests/p-jchwidow-s.log $(uptex_web_srcs) \
 	$(uptex_ch_srcs) uptexdir/uptex.defines uptexdir/upbibtex.ch \
 	uptexdir/updvitype.ch uptexdir/uppltotf.ch \
 	uptexdir/uptftopl.ch uptexdir/COPYRIGHT uptexdir/COPYRIGHT.ja \
 	uptexdir/ChangeLog $(uptex_tests) $(upweb_tests) \
+	uptexdir/tests/nissya.bst uptexdir/tests/sample.bib \
+	uptexdir/tests/nissya_bib.aux uptexdir/tests/nissya_bib.bbl \
 	tests/enc-u.bbl tests/enc-eu.bbl tests/enc-su.bbl \
-	tests/enc-uu.bbl uptexdir/tests/uptex3.tex \
+	tests/enc-uu.bbl uptexdir/tests/ptex3.tex \
+	uptexdir/tests/ptex3.dvi uptexdir/tests/ptex4.tex \
+	uptexdir/tests/ptex4.dvi uptexdir/tests/ptex3a-jis.typ \
+	uptexdir/tests/ptex3a-utf8.typ uptexdir/tests/ptex4a-jis.typ \
+	uptexdir/tests/ptex4a-utf8.typ uptexdir/tests/uptex3.tex \
 	uptexdir/tests/uptex3.dvi uptexdir/tests/uptex4.tex \
 	uptexdir/tests/uptex4.dvi uptexdir/tests/uptex5.tex \
 	uptexdir/tests/uptex5.dvi uptexdir/tests/uptex3a.typ \
 	uptexdir/tests/uptex4a.typ uptexdir/tests/uptex5a.typ \
-	uptexdir/tests/umin10.pl uptexdir/tests/umin10.tfm \
-	uptexdir/tests/utmin10.pl uptexdir/tests/utmin10.tfm \
-	uptexdir/tests/testnewu.pl uptexdir/tests/testnewu.tfm \
-	uptexdir/tests/testnewu8.pl uptexdir/tests/testnewu8.tfm \
-	uptexdir/tests/uparse.pl uptexdir/tests/uparse.tfm \
-	uptexdir/tests/gkhugeok.tfm uptexdir/tests/gkhugeng.tfm \
-	uptexdir/tests/gkhugeng.err uptexdir/tests/gk256g.tfm \
-	uptexdir/tests/gk256k.tfm uptexdir/uptrip/uptrip.diffs \
-	uptexdir/uptrip/texmf.cnf uptexdir/tests/up-ofm.tex \
-	uptexdir/tests/up-ofm.log uptexdir/tests/up-ofma.typ \
-	uptexdir/tests/up-prim.tex uptexdir/tests/up-prim.log \
-	uptexdir/tests/lmr1.tex uptexdir/tests/up-lmr1.log \
-	uptexdir/tests/lmr2.tex uptexdir/tests/up-lmr2.log \
-	uptexdir/tests/catcd.tex uptexdir/tests/up-cat.log \
-	uptexdir/tests/noto1.tex uptexdir/tests/up-noto1.log \
-	uptexdir/tests/jchwidow.tex uptexdir/tests/up-jchwidow.log \
-	$(euptex_web_srcs) $(euptex_ch_srcs) euptexdir/euptex.defines \
-	euptexdir/COPYRIGHT euptexdir/COPYRIGHT.jis \
-	euptexdir/ChangeLog euptexdir/EUPTEX.txt $(euptex_tests) \
+	uptexdir/tests/goth10.tfm uptexdir/tests/sample.dvi \
+	uptexdir/tests/samplea.typ uptexdir/tests/min10.pl \
+	uptexdir/tests/min10.tfm uptexdir/tests/tmin10.pl \
+	uptexdir/tests/tmin10.tfm uptexdir/tests/chcode.pl \
+	uptexdir/tests/chcode-jis.pl uptexdir/tests/chcode.tfm \
+	ptexdir/tests/chcode-utf8.pl uptexdir/tests/chcode-euc.pl \
+	uptexdir/tests/chcode-sjis.pl uptexdir/tests/umin10.pl \
+	uptexdir/tests/umin10.tfm uptexdir/tests/utmin10.pl \
+	uptexdir/tests/utmin10.tfm uptexdir/tests/testnewu.pl \
+	uptexdir/tests/testnewu.tfm uptexdir/tests/testnewu8.pl \
+	uptexdir/tests/testnewu8.tfm uptexdir/tests/uparse.pl \
+	uptexdir/tests/uparse.tfm uptexdir/tests/gkhugeok.tfm \
+	uptexdir/tests/gkhugeng.tfm uptexdir/tests/gkhugeng.err \
+	uptexdir/tests/gk256g.tfm uptexdir/tests/gk256k.tfm \
+	uptexdir/tests/skipjfmp.pl uptexdir/tests/skipjfmp.tfm \
+	uptexdir/tests/skipjfmp.tex uptexdir/uptrip/uptrip.diffs \
+	uptexdir/uptrip/texmf.cnf uptexdir/tests/pver1.tex \
+	uptexdir/tests/pver2.tex uptexdir/tests/ctrlsym.tex \
+	uptexdir/tests/ctrlsym-e.log uptexdir/tests/ctrlsym-u.log \
+	uptexdir/tests/endlinechar.tex uptexdir/tests/endline.log \
+	uptexdir/tests/control-symbol.tex \
+	uptexdir/tests/jctrlsym-e.log uptexdir/tests/jctrlsym-u.log \
+	uptexdir/tests/up-endlinea.typ \
+	uptexdir/tests/up-jctrlsyma-e.typ \
+	uptexdir/tests/up-jctrlsyma-u.typ \
+	uptexdir/tests/let_char_token.tex uptexdir/tests/chartoken.log \
+	uptexdir/tests/ptexlineendmode.tex \
+	uptexdir/tests/up-lineenda.typ uptexdir/tests/printkanji.tex \
+	uptexdir/tests/pknj-s.log uptexdir/tests/pknj-e.log \
+	uptexdir/tests/pknj-u.log uptexdir/tests/up-pknj-sa.typ \
+	uptexdir/tests/up-pknj-ea.typ uptexdir/tests/up-pknj-ua.typ \
+	uptexdir/tests/up-ofm.tex uptexdir/tests/up-ofm.log \
+	uptexdir/tests/up-ofma.typ uptexdir/tests/up-prim.tex \
+	uptexdir/tests/up-prim.log uptexdir/tests/lmr1.tex \
+	uptexdir/tests/up-lmr1.log uptexdir/tests/lmr2.tex \
+	uptexdir/tests/up-lmr2.log uptexdir/tests/catcd.tex \
+	uptexdir/tests/up-cat.log uptexdir/tests/noto1.tex \
+	uptexdir/tests/up-noto1.log uptexdir/tests/ucs.tex \
+	uptexdir/tests/ucs-s.log uptexdir/tests/ucs-e.log \
+	uptexdir/tests/ucs-u.log uptexdir/tests/jchwidow.tex \
+	uptexdir/tests/up-jchwidow-s.log \
+	uptexdir/tests/up-jchwidow-e.log \
+	uptexdir/tests/up-jchwidow.log $(euptex_web_srcs) \
+	$(euptex_ch_srcs) euptexdir/euptex.defines euptexdir/COPYRIGHT \
+	euptexdir/COPYRIGHT.jis euptexdir/ChangeLog \
+	euptexdir/EUPTEX.txt $(euptex_tests) \
 	euptexdir/eptrip/eptrip.log euptexdir/eptrip/eptrip.tex \
 	euptexdir/euptrip/euptrip.diffs euptexdir/euptrip/texmf.cnf \
 	euptexdir/pdfprimitive.test \
 	euptexdir/tests/pdfprimitive-test.tex \
 	euptexdir/tests/pdfprimitive-euptex.log \
-	euptexdir/tests/ctrlsym.tex euptexdir/tests/ctrlsym.log \
-	euptexdir/tests/endlinechar.tex euptexdir/tests/endline.log \
-	euptexdir/tests/control-symbol.tex \
-	euptexdir/tests/jctrlsym.log euptexdir/tests/eup-endlinea.typ \
-	euptexdir/tests/eup-jctrlsyma.typ \
+	euptexdir/tests/ctrlsym.tex euptexdir/tests/ctrlsym-e.log \
+	euptexdir/tests/ctrlsym-u.log euptexdir/tests/endlinechar.tex \
+	euptexdir/tests/endline.log euptexdir/tests/control-symbol.tex \
+	euptexdir/tests/jctrlsym-e.log euptexdir/tests/jctrlsym-u.log \
+	euptexdir/tests/eup-endlinea.typ \
+	euptexdir/tests/eup-jctrlsyma-e.typ \
+	euptexdir/tests/eup-jctrlsyma-u.typ \
 	euptexdir/tests/printkanji.tex euptexdir/tests/pknj-s.log \
 	euptexdir/tests/pknj-e.log euptexdir/tests/pknj-u.log \
 	euptexdir/tests/eup-pknj-sa.typ \
@@ -3343,23 +3367,24 @@
 	euptexdir/tests/eup-ofm.log euptexdir/tests/eup-prim.tex \
 	euptexdir/tests/eup-prim.log euptexdir/tests/ucs.tex \
 	euptexdir/tests/ucs-s.log euptexdir/tests/ucs-e.log \
-	euptexdir/tests/ucs-u.log euptexdir/tests/eup-jchwidow.log \
-	hitexdir/ChangeLog $(hitex_web) $(hitex_tests) \
-	hitexdir/tests/hello.tex hitexdir/tests/rule.tex \
-	pdftexdir/regex/COPYING.LIB pdftexdir/regex/README \
-	$(pdftex_ch_srcs) pdftexdir/pdftex.defines pdftexdir/ChangeLog \
-	pdftexdir/NEWS pdftexdir/README pdftexdir/change-files.txt \
-	$(pdftex_tests) tests/wprob.tex pdftexdir/tests/pdfimage.tex \
-	tests/1-4.jpg tests/B.pdf tests/basic.tex \
-	tests/lily-ledger-broken.png tests/expanded.tex \
-	tests/expanded.txt tests/cnfline.tex tests/partoken-ok.tex \
-	tests/partoken-xfail.tex $(ttf2afm_tests) \
-	pdftexdir/tests/postV3.afm pdftexdir/tests/postV3.ttf \
-	pdftexdir/tests/postV7.afm pdftexdir/tests/postV7.ttf \
-	$(pdftosrc_tests) pdftexdir/tests/test-13.pdf \
-	pdftexdir/tests/test-13.xref pdftexdir/tests/test-15.pdf \
-	pdftexdir/tests/test-15.xref $(libluasocket_sources) \
-	luatexdir/luasocket/src/ftp_lua.c \
+	euptexdir/tests/ucs-u.log euptexdir/tests/eup-jchwidow-s.log \
+	euptexdir/tests/eup-jchwidow-e.log \
+	euptexdir/tests/eup-jchwidow.log hitexdir/ChangeLog \
+	$(hitex_web) $(hitex_tests) hitexdir/tests/hello.tex \
+	hitexdir/tests/rule.tex pdftexdir/regex/COPYING.LIB \
+	pdftexdir/regex/README $(pdftex_ch_srcs) \
+	pdftexdir/pdftex.defines pdftexdir/ChangeLog pdftexdir/NEWS \
+	pdftexdir/README pdftexdir/change-files.txt $(pdftex_tests) \
+	tests/wprob.tex pdftexdir/tests/pdfimage.tex tests/1-4.jpg \
+	tests/B.pdf tests/basic.tex tests/lily-ledger-broken.png \
+	tests/expanded.tex tests/expanded.txt tests/cnfline.tex \
+	tests/partoken-ok.tex tests/partoken-xfail.tex \
+	$(ttf2afm_tests) pdftexdir/tests/postV3.afm \
+	pdftexdir/tests/postV3.ttf pdftexdir/tests/postV7.afm \
+	pdftexdir/tests/postV7.ttf $(pdftosrc_tests) \
+	pdftexdir/tests/test-13.pdf pdftexdir/tests/test-13.xref \
+	pdftexdir/tests/test-15.pdf pdftexdir/tests/test-15.xref \
+	$(libluasocket_sources) luatexdir/luasocket/src/ftp_lua.c \
 	luatexdir/luasocket/src/headers_lua.c \
 	luatexdir/luasocket/src/http_lua.c \
 	luatexdir/luasocket/src/ltn12_lua.c \
@@ -3654,33 +3679,32 @@
 	ptex.pool ptex-tangle $(pweb_programs:=.c) \
 	$(pweb_programs:=.h) $(pweb_programs:=.p) \
 	$(pweb_programs:=-web2c) $(pweb_programs:=.web) \
-	ptests/nissya_bib.* ptests/xexampl.aux ptests/xexampl.bbl \
-	ptests/xexampl.blg ptests/xenc*.* ptests/fn*.* \
-	ptests/memtest.bib ptests/memtest?.* ptests/xstory.dvityp \
-	ptests/xpagenum.typ ptests/xptex[34]*.typ ptests/xcmr10.tfm \
-	ptests/xcmr10.pl ptests/xsample*.typ ptests/x*min10.* \
-	ptests/xchcode*.* ptests/xskipjfmp.* ptrip.diffs p-ctrlsym.log \
-	p-ctrlsym.out p-ctrlsym.tex p-endline*.* p-jctrlsym*.* \
-	p-chartoken.* p-lineend.* p-pknj-*.* p-ucs*.* p-jchwidow*.* \
-	$(nodist_uptex_SOURCES) uptex.web uptex.ch uptex-web2c uptex.p \
-	uptex.pool uptex-tangle $(upweb_programs:=.c) \
-	$(upweb_programs:=.h) $(upweb_programs:=.p) \
-	$(upweb_programs:=-web2c) $(upweb_programs:=.web) \
-	uptests/nissya_bib.* uptests/xexampl.aux uptests/xexampl.bbl \
-	uptests/xexampl.blg uptests/xenc*.* uptests/fn*.* \
-	uptests/memtest.bib uptests/memtest?.* uptests/xstory.dvityp \
-	uptests/xpagenum.typ uptests/x*ptex[345]*.typ \
-	uptests/xcmr10.tfm uptests/xcmr10.pl uptests/xsample*.typ \
-	uptests/x*min10.* uptests/xchcode*.* uptests/xtestnewu*.* \
-	uptests/xuparse.* uptests/yuparse.* uptests/ygkhuge*.* \
-	uptests/ygk256*.* uptests/xskipjfmp.* uptrip.diffs up-ofm.* \
-	up-prim.* up-lmr*.* up-cat.* up-noto*.* up-jchwidow.* \
-	$(nodist_euptex_SOURCES) euptex.web euptex.ch euptex-web2c \
-	euptex.p euptex.pool euptex-tangle euptrip.diffs \
-	pdfprimitive-euptex.* eup-ctrlsym.log eup-ctrlsym.out \
-	eup-ctrlsym.tex eup-endline*.* eup-jctrlsym*.* eup-pknj-*.* \
-	eup-postpena*.* eup-free_*.* eup-inhibitglue*.* eup-kinsoku*.* \
-	eup-ofm.* eup-prim.* eup-ucs*.* eup-jchwidow.* \
+	ptests/xexampl.aux ptests/xexampl.bbl ptests/xexampl.blg \
+	ptests/xenc*.* ptests/fn*.* ptests/memtest.bib \
+	ptests/memtest?.* ptests/xcmr10.tfm ptests/xcmr10.pl \
+	ptrip.diffs p-ctrlsym.log p-ctrlsym.out p-ctrlsym.tex \
+	p-endline*.* p-jctrlsym*.* p-chartoken.* p-lineend.* \
+	p-pknj-*.* p-ucs*.* p-jchwidow*.* $(nodist_uptex_SOURCES) \
+	uptex.web uptex.ch uptex-web2c uptex.p uptex.pool uptex-tangle \
+	$(upweb_programs:=.c) $(upweb_programs:=.h) \
+	$(upweb_programs:=.p) $(upweb_programs:=-web2c) \
+	$(upweb_programs:=.web) uptests/nissya_bib.* \
+	uptests/xexampl.aux uptests/xexampl.bbl uptests/xexampl.blg \
+	uptests/xenc*.* uptests/fn*.* uptests/memtest.bib \
+	uptests/memtest?.* uptests/xstory.dvityp uptests/xpagenum.typ \
+	uptests/x*ptex[345]*.typ uptests/xcmr10.tfm uptests/xcmr10.pl \
+	uptests/xsample*.typ uptests/x*min10.* uptests/xchcode*.* \
+	uptests/xtestnewu*.* uptests/xuparse.* uptests/yuparse.* \
+	uptests/ygkhuge*.* uptests/ygk256*.* uptests/xskipjfmp.* \
+	uptrip.diffs up-ctrlsym.log up-ctrlsym.out up-ctrlsym.tex \
+	up-endline*.* up-jctrlsym*.* up-chartoken.* up-lineend.* \
+	up-pknj-*.* up-ofm.* up-prim.* up-lmr*.* up-cat.* up-noto*.* \
+	up-ucs*.* up-jchwidow*.* $(nodist_euptex_SOURCES) euptex.web \
+	euptex.ch euptex-web2c euptex.p euptex.pool euptex-tangle \
+	euptrip.diffs pdfprimitive-euptex.* eup-ctrlsym.log \
+	eup-ctrlsym.out eup-ctrlsym.tex eup-endline*.* eup-jctrlsym*.* \
+	eup-pknj-*.* eup-postpena*.* eup-free_*.* eup-inhibitglue*.* \
+	eup-kinsoku*.* eup-ofm.* eup-prim.* eup-ucs*.* eup-jchwidow*.* \
 	$(nodist_hitex_SOURCES) $(nodist_hishrink_SOURCES) \
 	$(nodist_histretch_SOURCES) hiformat-tangle hitex-tangle \
 	hello.log rule.log $(nodist_pdftex_SOURCES) pdftex-final.ch \
@@ -4569,9 +4593,12 @@
 	uptexdir/upver.test \
 	uptexdir/upkcat.test \
 	uptexdir/wcfname.test uptexdir/wcfname0.test \
+	uptexdir/uptex-ctrlsym.test \
+	uptexdir/uptex-prntknj.test \
 	uptexdir/uptex-ofm.test uptexdir/uptex-prim.test \
 	uptexdir/uptex-lmr.test uptexdir/uptex-cat.test \
-	uptexdir/uptex-noto.test uptexdir/uptex-widow.test
+	uptexdir/uptex-noto.test \
+	uptexdir/uptex-ucs.test uptexdir/uptex-widow.test
 
 # uppPLtoTF/upTFtoPL
 upweb_tests = uptexdir/upbibtex.test uptexdir/updvitype.test \
@@ -22152,9 +22179,11 @@
 	uptex$(EXEEXT) dvitype$(EXEEXT) pltotf$(EXEEXT) tftopl$(EXEEXT)
 uptexdir/upver.log uptexdir/upkcat.log \
 	uptexdir/wcfname.log uptexdir/wcfname0.log \
+	uptexdir/uptex-ctrlsym.log uptexdir/uptex-prntknj.log \
 	uptexdir/uptex-ofm.log uptexdir/uptex-prim.log \
 	uptexdir/uptex-lmr.log uptexdir/uptex-cat.log \
-	uptexdir/uptex-noto.log uptexdir/uptex-widow.log: uptex$(EXEEXT)
+	uptexdir/uptex-noto.log \
+	uptexdir/uptex-ucs.log uptexdir/uptex-widow.log: uptex$(EXEEXT)
 uptexdir/upbibtex.log: upbibtex$(EXEEXT)
 uptexdir/updvitype.log: updvitype$(EXEEXT)
 uptexdir/uppltotf.log: uppltotf$(EXEEXT)

Modified: branches/stable/source/src/texk/web2c/NEWS
===================================================================
--- branches/stable/source/src/texk/web2c/NEWS	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/NEWS	2025-05-17 22:44:20 UTC (rev 964)
@@ -2,7 +2,7 @@
 See also */NEWS, */ChangeLog, etc.
 
 

-2025 (for TeX Live 2025)
+2025 (for TeX Live 2025, 7 March 2025)
 * Most engines: new primitive parameter \ignoreprimitiveerror: if set to 1,
   the error "Infinite glue shrinkage found in box being split"
   becomes a warning (thus program exit status remains 0). Other values

Modified: branches/stable/source/src/texk/web2c/configure
===================================================================
--- branches/stable/source/src/texk/web2c/configure	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/configure	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for Web2C 2025.
+# Generated by GNU Autoconf 2.72 for Web2C 2026/dev.
 #
 # Report bugs to <tex-k at tug.org>.
 #
@@ -614,8 +614,8 @@
 # Identity of this package.
 PACKAGE_NAME='Web2C'
 PACKAGE_TARNAME='web2c'
-PACKAGE_VERSION='2025'
-PACKAGE_STRING='Web2C 2025'
+PACKAGE_VERSION='2026/dev'
+PACKAGE_STRING='Web2C 2026/dev'
 PACKAGE_BUGREPORT='tex-k at tug.org'
 PACKAGE_URL=''
 
@@ -1672,7 +1672,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures Web2C 2025 to adapt to many kinds of systems.
+'configure' configures Web2C 2026/dev to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1747,7 +1747,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of Web2C 2025:";;
+     short | recursive ) echo "Configuration of Web2C 2026/dev:";;
    esac
   cat <<\_ACEOF
 
@@ -1979,7 +1979,7 @@
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-Web2C configure 2025
+Web2C configure 2026/dev
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -3001,7 +3001,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by Web2C $as_me 2025, which was
+It was created by Web2C $as_me 2026/dev, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -3997,7 +3997,7 @@
 
 
 
-WEB2CVERSION=2025
+WEB2CVERSION=2026/dev
 
 
 # LuaTeX requires system extensions for socket support.
@@ -9993,7 +9993,7 @@
 
 # Define the identity of the package.
  PACKAGE='web2c'
- VERSION='2025'
+ VERSION='2026/dev'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -27427,7 +27427,7 @@
 Report bugs to <bug-libtool at gnu.org>."
 
 lt_cl_version="\
-Web2C config.lt 2025
+Web2C config.lt 2026/dev
 configured by $0, generated by GNU Autoconf 2.72.
 
 Copyright (C) 2024 Free Software Foundation, Inc.
@@ -31345,7 +31345,7 @@
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by Web2C $as_me 2025, which was
+This file was extended by Web2C $as_me 2026/dev, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -31417,7 +31417,7 @@
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-Web2C config.status 2025
+Web2C config.status 2026/dev
 configured by $0, generated by GNU Autoconf 2.72,
   with options \\"\$ac_cs_config\\"
 

Modified: branches/stable/source/src/texk/web2c/ctangleboot.cin
===================================================================
--- branches/stable/source/src/texk/web2c/ctangleboot.cin	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/ctangleboot.cin	2025-05-17 22:44:20 UTC (rev 964)
@@ -2,10 +2,10 @@
 #line 66 "cwebdir/ctangle.w"
 
 /*5:*/
-#line 57 "cwebdir/comm-w2c.h"
+#line 53 "cwebdir/comm-w2c.h"
 
 #include <ctype.h>  
-#include <kpathsea/simpletypes.h>  
+#include <stdbool.h>  
 #include <stddef.h>  
 #include <stdint.h>  
 #include <stdio.h>  
@@ -15,24 +15,21 @@
 #ifndef HAVE_GETTEXT
 #define HAVE_GETTEXT 0
 #endif
-#line 69 "cwebdir/comm-w2c.h"
+#line 65 "cwebdir/comm-w2c.h"
 
 #if HAVE_GETTEXT
 #include <libintl.h> 
 #else
-#line 73 "cwebdir/comm-w2c.h"
+#line 69 "cwebdir/comm-w2c.h"
 #define gettext(a) a
 #endif
-#line 75 "cwebdir/comm-w2c.h"
+#line 71 "cwebdir/comm-w2c.h"
 
 /*:5*/
 #line 67 "cwebdir/ctangle.w"
 
-#define banner "This is CTANGLE, Version 4.12.1" \
- \
-
-#define _(s) gettext(s)  \
-
+#define banner "This is CTANGLE, Version 4.12.1"
+#define _(s) gettext(s)
 #define and_and 04
 #define lt_lt 020
 #define gt_gt 021
@@ -47,38 +44,29 @@
 #define dot_dot_dot 016
 #define colon_colon 06
 #define period_ast 026
-#define minus_gt_ast 027 \
-
-#define compress(c) if(loc++<=limit) return c \
-
-#define xisalpha(c) (isalpha((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisdigit(c) (isdigit((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisspace(c) (isspace((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xislower(c) (islower((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisupper(c) (isupper((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisxdigit(c) (isxdigit((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define isxalpha(c) ((c) =='_'||(c) =='$')  \
-
-#define ishigh(c) ((eight_bits) (c) > 0177)  \
- \
-
-#define max_include_depth 10 \
-
+#define minus_gt_ast 027
+#define compress(c) if(loc++<=limit) return c
+#define xisalpha(c) (isalpha((int) (c) ) &&!ishigh(c) )
+#define xisdigit(c) (isdigit((int) (c) ) &&!ishigh(c) )
+#define xisspace(c) (isspace((int) (c) ) &&!ishigh(c) )
+#define xislower(c) (islower((int) (c) ) &&!ishigh(c) )
+#define xisupper(c) (isupper((int) (c) ) &&!ishigh(c) )
+#define xisxdigit(c) (isxdigit((int) (c) ) &&!ishigh(c) )
+#define isxalpha(c) ((c) =='_'||(c) =='$')
+#define ishigh(c) ((eight_bits) (c) > 0177)
+#define max_include_depth 10
 #define max_file_name_length 1024
 #define cur_file file[include_depth]
 #define cur_file_name file_name[include_depth]
 #define cur_line line[include_depth]
 #define web_file file[0]
-#define web_file_name file_name[0] \
-
-#define length(c) (size_t) ((c+1) ->byte_start-(c) ->byte_start) 
-#define print_id(c) term_write((c) ->byte_start,length(c) ) 
+#define web_file_name file_name[0]
+#define length(c) (size_t) ((c+1) ->byte_start-(c) ->byte_start)
+#define print_id(c) term_write((c) ->byte_start,length(c) )
 #define llink link
 #define rlink dummy.Rlink
-#define root name_dir->rlink \
-
-#define ilk dummy.Ilk \
-
+#define root name_dir->rlink
+#define ilk dummy.Ilk
 #define spotless 0
 #define harmless_message 1
 #define error_message 2
@@ -85,70 +73,50 @@
 #define fatal_message 3
 #define mark_harmless() if(history==spotless) history= harmless_message
 #define mark_error() history= error_message
-#define confusion(s) fatal(_("! This can't happen: ") ,s)  \
- \
-
+#define confusion(s) fatal(_("! This can't happen: ") ,s)
 #define show_banner flags['b']
 #define show_progress flags['p']
 #define show_happiness flags['h']
 #define show_stats flags['s']
 #define make_xrefs flags['x']
-#define check_for_change flags['c'] \
-
-#define update_terminal() fflush(stdout) 
-#define new_line() putchar('\n') 
-#define term_write(a,b) fflush(stdout) ,fwrite(a,sizeof(char) ,b,stdout)  \
-
+#define check_for_change flags['c']
+#define update_terminal() fflush(stdout)
+#define new_line() putchar('\n')
+#define term_write(a,b) fflush(stdout) ,fwrite(a,sizeof(char) ,b,stdout)
 #define buf_size 1000
-#define longest_name 10000 \
-
-#define long_buf_size (buf_size+longest_name) 
-#define max_bytes 1000000 \
-
-#define max_names 10239 \
-
-#define max_sections 4000 \
-
+#define longest_name 10000
+#define long_buf_size (buf_size+longest_name)
+#define max_bytes 1000000
+#define max_names 10239
+#define max_sections 4000
 #define max_texts 10239
 #define max_toks 1000000
-#define equiv equiv_or_xref \
-
+#define equiv equiv_or_xref
 #define macro 0
-#define section_flag max_texts \
-
+#define section_flag max_texts
 #define string 02
 #define constant 03
 #define join 0177
-#define output_defs_flag (2*024000-1)  \
-
+#define output_defs_flag (2*024000-1)
 #define stack_size 50
-#define cur_state stack[stack_size+1] \
-
+#define cur_state stack[stack_size+1]
 #define cur_byte cur_state.byte_field
 #define cur_name cur_state.name_field
 #define cur_repl cur_state.repl_field
 #define cur_section cur_state.section_field
-#define cur_end (cur_repl+1) ->tok_start \
-
+#define cur_end (cur_repl+1) ->tok_start
 #define section_number 0201
-#define identifier 0202 \
-
+#define identifier 0202
 #define normal 0
 #define num_or_id 1
 #define post_slash 2
 #define unbreakable 3
-#define verbatim 4 \
-
+#define verbatim 4
 #define max_files 256
-#define macro_end (cur_text+1) ->tok_start \
-
-#define C_printf(c,a) fprintf(C_file,c,a) 
-#define C_putc(c) fputc((int) (c) ,C_file)  \
-
-#define translit_length 10 \
-
-#define transliterate_utf_eight flags['u'] \
-
+#define C_printf(c,a) fprintf(C_file,c,a)
+#define C_putc(c) fputc((int) (c) ,C_file)
+#define translit_length 10
+#define transliterate_utf_eight flags['u']
 #define ignore 00
 #define ord 0302
 #define control_text 0303
@@ -158,26 +126,21 @@
 #define definition 0307
 #define begin_C 0310
 #define section_name 0311
-#define new_section 0312 \
-
+#define new_section 0312
 #define app_repl(c) { \
 if(tok_ptr==tok_mem_end) overflow(_("token") ) ; \
 else*(tok_ptr++) = (eight_bits) c; \
-} \
-
+}
 #define store_id(a) a= id_lookup(id_first,id_loc,'\0') -name_dir; \
 app_repl((a/0400) +0200) ; \
-app_repl(a%0400)  \
+app_repl(a%0400)
+#define keep_digit_separators flags['k']
+#define max_banner 50
 
-#define keep_digit_separators flags['k'] \
-
-#define max_banner 50 \
-
-
 #line 68 "cwebdir/ctangle.w"
 
 /*3:*/
-#line 33 "cwebdir/comm-w2c.h"
+#line 32 "cwebdir/comm-w2c.h"
 
 typedef uint8_t eight_bits;
 typedef uint16_t sixteen_bits;
@@ -188,7 +151,7 @@
 extern int phase;
 
 /*:3*//*6:*/
-#line 97 "cwebdir/comm-w2c.h"
+#line 108 "cwebdir/comm-w2c.h"
 
 extern char section_text[];
 extern char*section_text_end;
@@ -196,7 +159,7 @@
 extern char*id_loc;
 
 /*:6*//*7:*/
-#line 115 "cwebdir/comm-w2c.h"
+#line 126 "cwebdir/comm-w2c.h"
 
 extern char buffer[];
 extern char*buffer_end;
@@ -204,7 +167,7 @@
 extern char*limit;
 
 /*:7*//*8:*/
-#line 132 "cwebdir/comm-w2c.h"
+#line 143 "cwebdir/comm-w2c.h"
 
 extern int include_depth;
 extern FILE*file[];
@@ -216,20 +179,20 @@
 extern int line[];
 extern int change_line;
 extern int change_depth;
-extern boolean input_has_ended;
-extern boolean changing;
-extern boolean web_file_open;
+extern bool input_has_ended;
+extern bool changing;
+extern bool web_file_open;
 
 /*:8*//*10:*/
-#line 153 "cwebdir/comm-w2c.h"
+#line 164 "cwebdir/comm-w2c.h"
 
 extern sixteen_bits section_count;
-extern boolean changed_section[];
-extern boolean change_pending;
-extern boolean print_where;
+extern bool changed_section[];
+extern bool change_pending;
+extern bool print_where;
 
 /*:10*//*11:*/
-#line 168 "cwebdir/comm-w2c.h"
+#line 179 "cwebdir/comm-w2c.h"
 
 typedef struct name_info{
 char*byte_start;
@@ -254,12 +217,12 @@
 extern hash_pointer hash_ptr;
 
 /*:11*//*13:*/
-#line 213 "cwebdir/comm-w2c.h"
+#line 224 "cwebdir/comm-w2c.h"
 
 extern int history;
 
 /*:13*//*15:*/
-#line 234 "cwebdir/comm-w2c.h"
+#line 245 "cwebdir/comm-w2c.h"
 
 extern int argc;
 extern char**argv;
@@ -268,11 +231,11 @@
 extern char idx_file_name[];
 extern char scn_file_name[];
 extern char check_file_name[];
-extern boolean flags[];
+extern bool flags[];
 extern const char*use_language;
 
 /*:15*//*16:*/
-#line 250 "cwebdir/comm-w2c.h"
+#line 261 "cwebdir/comm-w2c.h"
 
 extern FILE*C_file;
 extern FILE*tex_file;
@@ -282,7 +245,7 @@
 extern FILE*check_file;
 
 /*:16*//*116:*/
-#line 541 "cwebdir/ctang-w2c.ch"
+#line 539 "cwebdir/ctang-w2c.ch"
 
 extern char cb_banner[];
 
@@ -344,7 +307,7 @@
 #line 457 "cwebdir/ctangle.w"
 
 static eight_bits out_state;
-static boolean protect;
+static bool protect;
 
 /*:42*//*45:*/
 #line 488 "cwebdir/ctangle.w"
@@ -357,7 +320,7 @@
 /*:45*//*53:*/
 #line 584 "cwebdir/ctangle.w"
 
-static boolean output_defs_seen= false;
+static bool output_defs_seen= false;
 
 /*:53*//*57:*/
 #line 694 "cwebdir/ctangle.w"
@@ -372,13 +335,13 @@
 /*:62*//*66:*/
 #line 827 "cwebdir/ctangle.w"
 
-static boolean comment_continues= false;
+static bool comment_continues= false;
 
 /*:66*//*68:*/
 #line 864 "cwebdir/ctangle.w"
 
 static name_pointer cur_section_name;
-static boolean no_where;
+static bool no_where;
 
 /*:68*//*82:*/
 #line 1182 "cwebdir/ctangle.w"
@@ -390,33 +353,33 @@
 #line 71 "cwebdir/ctangle.w"
 
 /*4:*/
-#line 43 "cwebdir/comm-w2c.h"
+#line 42 "cwebdir/comm-w2c.h"
 
 extern void common_init(void);
 
 /*:4*//*9:*/
-#line 147 "cwebdir/comm-w2c.h"
+#line 158 "cwebdir/comm-w2c.h"
 
-extern boolean get_line(void);
+extern bool get_line(void);
 extern void check_complete(void);
 extern void reset_input(void);
 
 /*:9*//*12:*/
-#line 191 "cwebdir/comm-w2c.h"
+#line 202 "cwebdir/comm-w2c.h"
 
 extern name_pointer id_lookup(const char*,const char*,eight_bits);
 
-extern name_pointer section_lookup(char*,char*,boolean);
+extern name_pointer section_lookup(char*,char*,bool);
 extern void print_prefix_name(name_pointer);
 extern void print_section_name(name_pointer);
 extern void sprint_section_name(char*,name_pointer);
 
-extern boolean names_match(name_pointer,const char*,size_t,eight_bits);
+extern bool names_match(name_pointer,const char*,size_t,eight_bits);
 
 extern void init_node(name_pointer);
 
 /*:12*//*14:*/
-#line 216 "cwebdir/comm-w2c.h"
+#line 227 "cwebdir/comm-w2c.h"
 
 extern int wrap_up(void);
 extern void err_print(const char*);
@@ -435,7 +398,7 @@
 #line 347 "cwebdir/ctangle.w"
 
 static void push_level(name_pointer);
-static void pop_level(boolean);
+static void pop_level(bool);
 static void get_output(void);
 
 /*:37*//*44:*/
@@ -453,7 +416,7 @@
 #line 807 "cwebdir/ctangle.w"
 
 static eight_bits skip_ahead(void);
-static boolean skip_comment(boolean);
+static bool skip_comment(bool);
 
 /*:65*//*70:*/
 #line 915 "cwebdir/ctangle.w"
@@ -540,7 +503,7 @@
 section_text[0]= ' ';
 
 /*:78*//*117:*/
-#line 544 "cwebdir/ctang-w2c.ch"
+#line 542 "cwebdir/ctang-w2c.ch"
 
 strncpy(cb_banner,banner,max_banner-1);
 
@@ -559,7 +522,7 @@
 /*:2*//*24:*/
 #line 155 "cwebdir/ctangle.w"
 
-boolean names_match(
+bool names_match(
 name_pointer p,
 const char*first,
 size_t l,
@@ -616,7 +579,7 @@
 
 static void
 pop_level(
-boolean flag)
+bool flag)
 {
 if(flag&&cur_repl->text_link<section_flag){
 cur_repl= cur_repl->text_link+text_info;
@@ -752,13 +715,13 @@
 if(check_for_change){
 fclose(C_file);C_file= NULL;
 /*106:*/
-#line 424 "cwebdir/ctang-w2c.ch"
+#line 422 "cwebdir/ctang-w2c.ch"
 
 if((C_file= fopen(C_file_name,"r"))!=NULL){
 /*107:*/
-#line 431 "cwebdir/ctang-w2c.ch"
+#line 429 "cwebdir/ctang-w2c.ch"
 
-boolean comparison= false;
+bool comparison= false;
 
 if((check_file= fopen(check_file_name,"r"))==NULL)
 fatal(_("! Cannot open output file "),check_file_name);
@@ -765,7 +728,7 @@
 
 
 /*108:*/
-#line 445 "cwebdir/ctang-w2c.ch"
+#line 443 "cwebdir/ctang-w2c.ch"
 
 do{
 char x[BUFSIZ],y[BUFSIZ];
@@ -775,7 +738,7 @@
 }while(comparison&&!feof(C_file)&&!feof(check_file));
 
 /*:108*/
-#line 438 "cwebdir/ctang-w2c.ch"
+#line 436 "cwebdir/ctang-w2c.ch"
 
 
 fclose(C_file);C_file= NULL;
@@ -782,10 +745,10 @@
 fclose(check_file);check_file= NULL;
 
 /*:107*/
-#line 426 "cwebdir/ctang-w2c.ch"
+#line 424 "cwebdir/ctang-w2c.ch"
 
 /*109:*/
-#line 456 "cwebdir/ctang-w2c.ch"
+#line 454 "cwebdir/ctang-w2c.ch"
 
 if(comparison)
 remove(check_file_name);
@@ -795,7 +758,7 @@
 }
 
 /*:109*/
-#line 427 "cwebdir/ctang-w2c.ch"
+#line 425 "cwebdir/ctang-w2c.ch"
 
 }else
 rename(check_file_name,C_file_name);
@@ -808,7 +771,7 @@
 an_output_file--;
 sprint_section_name(output_file_name,*an_output_file);
 if(check_for_change)/*105:*/
-#line 415 "cwebdir/ctang-w2c.ch"
+#line 413 "cwebdir/ctang-w2c.ch"
 {
 if((C_file= fopen(output_file_name,"a"))==NULL)
 fatal(_("! Cannot open output file "),output_file_name);
@@ -853,24 +816,24 @@
 if(check_for_change){
 fclose(C_file);C_file= NULL;
 /*110:*/
-#line 469 "cwebdir/ctang-w2c.ch"
+#line 467 "cwebdir/ctang-w2c.ch"
 
 if(0==strcmp("/dev/stdout",output_file_name))
 /*112:*/
-#line 496 "cwebdir/ctang-w2c.ch"
+#line 494 "cwebdir/ctang-w2c.ch"
 {
 /*115:*/
-#line 527 "cwebdir/ctang-w2c.ch"
+#line 525 "cwebdir/ctang-w2c.ch"
 
 char in_buf[BUFSIZ+1];
 int in_size;
-boolean comparison= true;
+bool comparison= true;
 if((check_file= fopen(check_file_name,"r"))==NULL)
 fatal(_("! Cannot open output file "),check_file_name);
 
 
 /*:115*/
-#line 497 "cwebdir/ctang-w2c.ch"
+#line 495 "cwebdir/ctang-w2c.ch"
 
 do{
 in_size= fread(in_buf,sizeof(char),BUFSIZ,check_file);
@@ -879,7 +842,7 @@
 }while(!feof(check_file));
 fclose(check_file);check_file= NULL;
 /*111:*/
-#line 486 "cwebdir/ctang-w2c.ch"
+#line 484 "cwebdir/ctang-w2c.ch"
 
 if(comparison)
 remove(check_file_name);
@@ -889,29 +852,29 @@
 }
 
 /*:111*/
-#line 504 "cwebdir/ctang-w2c.ch"
+#line 502 "cwebdir/ctang-w2c.ch"
 
 }
 
 /*:112*/
-#line 471 "cwebdir/ctang-w2c.ch"
+#line 469 "cwebdir/ctang-w2c.ch"
 
 else if(0==strcmp("/dev/stderr",output_file_name))
 /*113:*/
-#line 509 "cwebdir/ctang-w2c.ch"
+#line 507 "cwebdir/ctang-w2c.ch"
 {
 /*115:*/
-#line 527 "cwebdir/ctang-w2c.ch"
+#line 525 "cwebdir/ctang-w2c.ch"
 
 char in_buf[BUFSIZ+1];
 int in_size;
-boolean comparison= true;
+bool comparison= true;
 if((check_file= fopen(check_file_name,"r"))==NULL)
 fatal(_("! Cannot open output file "),check_file_name);
 
 
 /*:115*/
-#line 510 "cwebdir/ctang-w2c.ch"
+#line 508 "cwebdir/ctang-w2c.ch"
 
 do{
 in_size= fread(in_buf,sizeof(char),BUFSIZ,check_file);
@@ -920,7 +883,7 @@
 }while(!feof(check_file));
 fclose(check_file);check_file= NULL;
 /*111:*/
-#line 486 "cwebdir/ctang-w2c.ch"
+#line 484 "cwebdir/ctang-w2c.ch"
 
 if(comparison)
 remove(check_file_name);
@@ -930,20 +893,20 @@
 }
 
 /*:111*/
-#line 517 "cwebdir/ctang-w2c.ch"
+#line 515 "cwebdir/ctang-w2c.ch"
 
 }
 
 /*:113*/
-#line 473 "cwebdir/ctang-w2c.ch"
+#line 471 "cwebdir/ctang-w2c.ch"
 
 else if(0==strcmp("/dev/null",output_file_name))
 /*114:*/
-#line 522 "cwebdir/ctang-w2c.ch"
+#line 520 "cwebdir/ctang-w2c.ch"
 {
-boolean comparison= true;
+bool comparison= true;
 /*111:*/
-#line 486 "cwebdir/ctang-w2c.ch"
+#line 484 "cwebdir/ctang-w2c.ch"
 
 if(comparison)
 remove(check_file_name);
@@ -953,19 +916,19 @@
 }
 
 /*:111*/
-#line 524 "cwebdir/ctang-w2c.ch"
+#line 522 "cwebdir/ctang-w2c.ch"
 
 }
 
 /*:114*/
-#line 475 "cwebdir/ctang-w2c.ch"
+#line 473 "cwebdir/ctang-w2c.ch"
 
 else{
 if((C_file= fopen(output_file_name,"r"))!=NULL){
 /*107:*/
-#line 431 "cwebdir/ctang-w2c.ch"
+#line 429 "cwebdir/ctang-w2c.ch"
 
-boolean comparison= false;
+bool comparison= false;
 
 if((check_file= fopen(check_file_name,"r"))==NULL)
 fatal(_("! Cannot open output file "),check_file_name);
@@ -972,7 +935,7 @@
 
 
 /*108:*/
-#line 445 "cwebdir/ctang-w2c.ch"
+#line 443 "cwebdir/ctang-w2c.ch"
 
 do{
 char x[BUFSIZ],y[BUFSIZ];
@@ -982,7 +945,7 @@
 }while(comparison&&!feof(C_file)&&!feof(check_file));
 
 /*:108*/
-#line 438 "cwebdir/ctang-w2c.ch"
+#line 436 "cwebdir/ctang-w2c.ch"
 
 
 fclose(C_file);C_file= NULL;
@@ -989,10 +952,10 @@
 fclose(check_file);check_file= NULL;
 
 /*:107*/
-#line 478 "cwebdir/ctang-w2c.ch"
+#line 476 "cwebdir/ctang-w2c.ch"
 
 /*111:*/
-#line 486 "cwebdir/ctang-w2c.ch"
+#line 484 "cwebdir/ctang-w2c.ch"
 
 if(comparison)
 remove(check_file_name);
@@ -1002,7 +965,7 @@
 }
 
 /*:111*/
-#line 479 "cwebdir/ctang-w2c.ch"
+#line 477 "cwebdir/ctang-w2c.ch"
 
 }else
 rename(check_file_name,output_file_name);
@@ -1030,22 +993,24 @@
 }
 
 /*:48*//*54:*/
-#line 592 "cwebdir/ctangle.w"
+#line 590 "cwebdir/ctangle.w"
 
 static void
 output_defs(void)
 {
-sixteen_bits a;
+sixteen_bits a;eight_bits*macro_end;
 push_level(NULL);
 for(cur_text= text_info+1;cur_text<text_ptr;cur_text++)
 if(cur_text->text_link==macro){
 cur_byte= cur_text->tok_start;
+macro_end= (cur_text+1)->tok_start;
 C_printf("%s","#define ");
 out_state= normal;
 protect= true;
-while(cur_byte<macro_end){
+do macro_end--;while(isspace(*macro_end)&&plus_plus!=*macro_end);
+
+while(cur_byte<=macro_end){
 a= *cur_byte++;
-if(cur_byte==macro_end&&a=='\n')break;
 if(out_state==verbatim&&a!=string&&a!=constant&&a!='\n')
 C_putc(a);
 
@@ -1092,7 +1057,7 @@
 if(out_state==num_or_id)C_putc(' ');
 for(j= (cur_val+name_dir)->byte_start;
 j<(cur_val+name_dir+1)->byte_start;j++)
-#line 200 "cwebdir/ctang-w2c.ch"
+#line 199 "cwebdir/ctang-w2c.ch"
 if(ishigh(*j)){
 
 if(transliterate_utf_eight){
@@ -1102,8 +1067,8 @@
 }
 C_printf("%s",translit[(eight_bits)(*j)-0200]);
 }
+#line 710 "cwebdir/ctangle.w"
 else C_putc(*j);
-#line 711 "cwebdir/ctangle.w"
 out_state= num_or_id;break;
 
 /*:59*/
@@ -1200,8 +1165,8 @@
 /*:64*//*67:*/
 #line 830 "cwebdir/ctangle.w"
 
-static boolean skip_comment(
-boolean is_long_comment)
+static bool skip_comment(
+bool is_long_comment)
 {
 char c;
 while(true){
@@ -1209,7 +1174,7 @@
 if(is_long_comment){
 if(get_line())return comment_continues= true;
 else{
-#line 215 "cwebdir/ctang-w2c.ch"
+#line 213 "cwebdir/ctang-w2c.ch"
 err_print(_("! Input ended in mid-comment"));
 #line 841 "cwebdir/ctangle.w"
 
@@ -1224,7 +1189,7 @@
 }
 if(c=='@'){
 if(ccode[(eight_bits)*loc]==new_section){
-#line 221 "cwebdir/ctang-w2c.ch"
+#line 219 "cwebdir/ctang-w2c.ch"
 err_print(_("! Section name ended in mid-comment"));loc--;
 #line 854 "cwebdir/ctangle.w"
 
@@ -1241,7 +1206,7 @@
 static eight_bits
 get_next(void)
 {
-static boolean preprocessing= false;
+static bool preprocessing= false;
 eight_bits c;
 while(true){
 if(loc> limit){
@@ -1282,7 +1247,7 @@
 if(xisdigit(c)||c=='.')/*73:*/
 #line 956 "cwebdir/ctangle.w"
 {
-boolean hex_flag= false;
+bool hex_flag= false;
 id_first= loc-1;
 if(*id_first=='.'&&!xisdigit(*loc))goto mistake;
 if(*id_first=='0'){
@@ -1332,13 +1297,13 @@
 while(true){
 if(loc>=limit){
 if(*(limit-1)!='\\'){
-#line 227 "cwebdir/ctang-w2c.ch"
+#line 225 "cwebdir/ctang-w2c.ch"
 err_print(_("! String didn't end"));loc= limit;break;
 #line 1005 "cwebdir/ctangle.w"
 
 }
 if(get_line()==false){
-#line 233 "cwebdir/ctang-w2c.ch"
+#line 231 "cwebdir/ctang-w2c.ch"
 err_print(_("! Input ended in middle of string"));loc= buffer;break;
 #line 1009 "cwebdir/ctangle.w"
 
@@ -1358,7 +1323,7 @@
 if(++id_loc<=section_text_end)*id_loc= (char)c;
 }
 if(id_loc>=section_text_end){
-#line 239 "cwebdir/ctang-w2c.ch"
+#line 237 "cwebdir/ctang-w2c.ch"
 printf("%s",_("\n! String too long: "));
 #line 1027 "cwebdir/ctangle.w"
 
@@ -1392,7 +1357,7 @@
 
 switch(c= ccode[(eight_bits)*loc++]){
 case ignore:continue;
-#line 245 "cwebdir/ctang-w2c.ch"
+#line 243 "cwebdir/ctang-w2c.ch"
 case translit_code:err_print(_("! Use @l in limbo only"));continue;
 #line 1042 "cwebdir/ctangle.w"
 
@@ -1399,7 +1364,7 @@
 case control_text:while((c= skip_ahead())=='@');
 
 if(*(loc-1)!='>')
-#line 251 "cwebdir/ctang-w2c.ch"
+#line 249 "cwebdir/ctang-w2c.ch"
 err_print(_("! Double @ should be used in control text"));
 #line 1047 "cwebdir/ctangle.w"
 
@@ -1415,7 +1380,7 @@
 
 while(true){
 if(loc> limit&&get_line()==false){
-#line 269 "cwebdir/ctang-w2c.ch"
+#line 267 "cwebdir/ctang-w2c.ch"
 err_print(_("! Input ended in section name"));
 #line 1109 "cwebdir/ctangle.w"
 
@@ -1431,13 +1396,13 @@
 loc+= 2;break;
 }
 if(ccode[(eight_bits)c]==new_section){
-#line 281 "cwebdir/ctang-w2c.ch"
+#line 279 "cwebdir/ctang-w2c.ch"
 err_print(_("! Section name didn't end"));break;
 #line 1136 "cwebdir/ctangle.w"
 
 }
 if(ccode[(eight_bits)c]==section_name){
-#line 287 "cwebdir/ctang-w2c.ch"
+#line 285 "cwebdir/ctang-w2c.ch"
 err_print(_("! Nesting of section names not allowed"));break;
 #line 1140 "cwebdir/ctangle.w"
 
@@ -1455,7 +1420,7 @@
 *k= (char)c;
 }
 if(k>=section_text_end){
-#line 275 "cwebdir/ctang-w2c.ch"
+#line 273 "cwebdir/ctang-w2c.ch"
 printf("%s",_("\n! Section name too long: "));
 #line 1122 "cwebdir/ctangle.w"
 
@@ -1503,7 +1468,7 @@
 
 id_first= loc++;*(limit+1)= '@';*(limit+2)= '>';
 while(*loc!='@'||*(loc+1)!='>')loc++;
-#line 293 "cwebdir/ctang-w2c.ch"
+#line 291 "cwebdir/ctang-w2c.ch"
 if(loc>=limit)err_print(_("! Verbatim string didn't end"));
 #line 1154 "cwebdir/ctangle.w"
 
@@ -1522,7 +1487,7 @@
 while(*loc!='\''){
 if(*loc=='@'){
 if(*(loc+1)!='@')
-#line 257 "cwebdir/ctang-w2c.ch"
+#line 255 "cwebdir/ctang-w2c.ch"
 err_print(_("! Double @ should be used in ASCII constant"));
 #line 1071 "cwebdir/ctangle.w"
 
@@ -1530,7 +1495,7 @@
 }
 loc++;
 if(loc> limit){
-#line 263 "cwebdir/ctang-w2c.ch"
+#line 261 "cwebdir/ctang-w2c.ch"
 err_print(_("! String didn't end"));loc= limit-1;break;
 #line 1077 "cwebdir/ctangle.w"
 
@@ -1635,7 +1600,7 @@
 while(*try_loc==' '&&try_loc<limit)try_loc++;
 if(*try_loc=='+'&&try_loc<limit)try_loc++;
 while(*try_loc==' '&&try_loc<limit)try_loc++;
-#line 329 "cwebdir/ctang-w2c.ch"
+#line 327 "cwebdir/ctang-w2c.ch"
 if(*try_loc=='=')err_print(_("! Missing `@ ' before a named section"));
 #line 1279 "cwebdir/ctangle.w"
 
@@ -1670,7 +1635,7 @@
 
 }
 break;
-#line 317 "cwebdir/ctang-w2c.ch"
+#line 315 "cwebdir/ctang-w2c.ch"
 case output_defs_code:if(t!=section_name)err_print(_("! Misplaced @h"));
 #line 1251 "cwebdir/ctangle.w"
 
@@ -1708,7 +1673,7 @@
 while(id_first<id_loc){
 if(*id_first=='@'){
 if(*(id_first+1)=='@')id_first++;
-#line 335 "cwebdir/ctang-w2c.ch"
+#line 333 "cwebdir/ctang-w2c.ch"
 else err_print(_("! Double @ should be used in string"));
 #line 1296 "cwebdir/ctangle.w"
 
@@ -1762,7 +1727,7 @@
 case'\\':c= '\\';break;
 case'\'':c= '\'';break;
 case'\"':c= '\"';break;
-#line 341 "cwebdir/ctang-w2c.ch"
+#line 339 "cwebdir/ctang-w2c.ch"
 default:err_print(_("! Unrecognized escape sequence"));
 #line 1345 "cwebdir/ctangle.w"
 
@@ -1782,7 +1747,7 @@
 break;
 case definition:case format_code:case begin_C:if(t!=section_name)goto done;
 else{
-#line 323 "cwebdir/ctang-w2c.ch"
+#line 321 "cwebdir/ctang-w2c.ch"
 err_print(_("! @d, @f and @c are ignored in C text"));continue;
 #line 1269 "cwebdir/ctangle.w"
 
@@ -1798,7 +1763,7 @@
 default:app_repl(a);
 }
 done:next_control= (eight_bits)a;
-#line 311 "cwebdir/ctang-w2c.ch"
+#line 309 "cwebdir/ctang-w2c.ch"
 if(text_ptr> text_info_end)overflow(_("text"));
 #line 1205 "cwebdir/ctangle.w"
 cur_text= text_ptr;(++text_ptr)->tok_start= tok_ptr;
@@ -1837,7 +1802,7 @@
 
 while((next_control= get_next())=='\n');
 if(next_control!=identifier){
-#line 347 "cwebdir/ctang-w2c.ch"
+#line 345 "cwebdir/ctang-w2c.ch"
 err_print(_("! Definition flushed, must start with identifier"));
 #line 1418 "cwebdir/ctangle.w"
 
@@ -1948,7 +1913,7 @@
 loc+= 3;
 if(loc> limit||!xisxdigit(*(loc-3))||!xisxdigit(*(loc-2))
 ||(*(loc-3)>='0'&&*(loc-3)<='7')||!xisspace(*(loc-1)))
-#line 367 "cwebdir/ctang-w2c.ch"
+#line 365 "cwebdir/ctang-w2c.ch"
 err_print(_("! Improper hex number following @l"));
 #line 1517 "cwebdir/ctangle.w"
 
@@ -1960,7 +1925,7 @@
 beg= loc;
 while(loc<limit&&(xisalpha(*loc)||xisdigit(*loc)||isxalpha(*loc)))loc++;
 if(loc-beg>=translit_length)
-#line 373 "cwebdir/ctang-w2c.ch"
+#line 371 "cwebdir/ctang-w2c.ch"
 err_print(_("! Replacement string in @l too long"));
 #line 1527 "cwebdir/ctangle.w"
 
@@ -1977,12 +1942,12 @@
 case control_text:if(c=='q'||c=='Q'){
 while((c= (char)skip_ahead())=='@');
 if(*(loc-1)!='>')
-#line 353 "cwebdir/ctang-w2c.ch"
+#line 351 "cwebdir/ctang-w2c.ch"
 err_print(_("! Double @ should be used in control text"));
 #line 1499 "cwebdir/ctangle.w"
 
 break;
-#line 360 "cwebdir/ctang-w2c.ch"
+#line 358 "cwebdir/ctang-w2c.ch"
 }/* otherwise fall through */
 default:err_print(_("! Double @ should be used in limbo"));
 #line 1503 "cwebdir/ctangle.w"
@@ -1997,7 +1962,7 @@
 
 void
 print_stats(void){
-#line 386 "cwebdir/ctang-w2c.ch"
+#line 384 "cwebdir/ctang-w2c.ch"
 puts(_("\nMemory usage statistics:"));
 printf(_("%td names (out of %ld)\n"),
 (ptrdiff_t)(name_ptr-name_dir),(long)max_names);
@@ -2010,5 +1975,5 @@
 (ptrdiff_t)(tok_ptr-tok_mem),(long)max_toks);
 }
 
-#line 399 "cwebdir/ctang-w2c.ch"
+#line 397 "cwebdir/ctang-w2c.ch"
 /*:103*/

Modified: branches/stable/source/src/texk/web2c/cwebboot.cin
===================================================================
--- branches/stable/source/src/texk/web2c/cwebboot.cin	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebboot.cin	2025-05-17 22:44:20 UTC (rev 964)
@@ -2,10 +2,10 @@
 #line 62 "cwebdir/common.w"
 
 /*4:*/
-#line 57 "cwebdir/comm-w2c.h"
+#line 53 "cwebdir/comm-w2c.h"
 
 #include <ctype.h>  
-#include <kpathsea/simpletypes.h>  
+#include <stdbool.h>  
 #include <stddef.h>  
 #include <stdint.h>  
 #include <stdio.h>  
@@ -15,31 +15,31 @@
 #ifndef HAVE_GETTEXT
 #define HAVE_GETTEXT 0
 #endif
-#line 69 "cwebdir/comm-w2c.h"
+#line 65 "cwebdir/comm-w2c.h"
 
 #if HAVE_GETTEXT
 #include <libintl.h> 
 #else
-#line 73 "cwebdir/comm-w2c.h"
+#line 69 "cwebdir/comm-w2c.h"
 #define gettext(a) a
 #endif
-#line 75 "cwebdir/comm-w2c.h"
+#line 71 "cwebdir/comm-w2c.h"
 
 /*:4*//*91:*/
-#line 739 "cwebdir/comm-w2c.ch"
+#line 699 "cwebdir/comm-w2c.ch"
 
 #if HAVE_GETTEXT
 #include <locale.h>  
 #else
-#line 743 "cwebdir/comm-w2c.ch"
+#line 703 "cwebdir/comm-w2c.ch"
 #define setlocale(a,b) ""
 #define bindtextdomain(a,b) ""
 #define textdomain(a) ""
 #endif
-#line 747 "cwebdir/comm-w2c.ch"
+#line 707 "cwebdir/comm-w2c.ch"
 
 /*:91*//*93:*/
-#line 786 "cwebdir/comm-w2c.ch"
+#line 746 "cwebdir/comm-w2c.ch"
 
 #include <kpathsea/kpathsea.h>  
 
@@ -47,7 +47,7 @@
 #include <lib/lib.h>  
 
 /*:93*//*96:*/
-#line 823 "cwebdir/comm-w2c.ch"
+#line 783 "cwebdir/comm-w2c.ch"
 
 #define CWEB
 #include "help.h" 
@@ -55,8 +55,7 @@
 /*:96*/
 #line 63 "cwebdir/common.w"
 
-#define _(s) gettext(s)  \
-
+#define _(s) gettext(s)
 #define and_and 04
 #define lt_lt 020
 #define gt_gt 021
@@ -71,38 +70,29 @@
 #define dot_dot_dot 016
 #define colon_colon 06
 #define period_ast 026
-#define minus_gt_ast 027 \
-
-#define compress(c) if(loc++<=limit) return c \
-
-#define xisalpha(c) (isalpha((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisdigit(c) (isdigit((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisspace(c) (isspace((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xislower(c) (islower((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisupper(c) (isupper((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisxdigit(c) (isxdigit((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define isxalpha(c) ((c) =='_'||(c) =='$')  \
-
-#define ishigh(c) ((eight_bits) (c) > 0177)  \
- \
-
-#define max_include_depth 10 \
-
+#define minus_gt_ast 027
+#define compress(c) if(loc++<=limit) return c
+#define xisalpha(c) (isalpha((int) (c) ) &&!ishigh(c) )
+#define xisdigit(c) (isdigit((int) (c) ) &&!ishigh(c) )
+#define xisspace(c) (isspace((int) (c) ) &&!ishigh(c) )
+#define xislower(c) (islower((int) (c) ) &&!ishigh(c) )
+#define xisupper(c) (isupper((int) (c) ) &&!ishigh(c) )
+#define xisxdigit(c) (isxdigit((int) (c) ) &&!ishigh(c) )
+#define isxalpha(c) ((c) =='_'||(c) =='$')
+#define ishigh(c) ((eight_bits) (c) > 0177)
+#define max_include_depth 10
 #define max_file_name_length 1024
 #define cur_file file[include_depth]
 #define cur_file_name file_name[include_depth]
 #define cur_line line[include_depth]
 #define web_file file[0]
-#define web_file_name file_name[0] \
-
-#define length(c) (size_t) ((c+1) ->byte_start-(c) ->byte_start) 
-#define print_id(c) term_write((c) ->byte_start,length(c) ) 
+#define web_file_name file_name[0]
+#define length(c) (size_t) ((c+1) ->byte_start-(c) ->byte_start)
+#define print_id(c) term_write((c) ->byte_start,length(c) )
 #define llink link
 #define rlink dummy.Rlink
-#define root name_dir->rlink \
-
-#define ilk dummy.Ilk \
-
+#define root name_dir->rlink
+#define ilk dummy.Ilk
 #define spotless 0
 #define harmless_message 1
 #define error_message 2
@@ -109,77 +99,54 @@
 #define fatal_message 3
 #define mark_harmless() if(history==spotless) history= harmless_message
 #define mark_error() history= error_message
-#define confusion(s) fatal(_("! This can't happen: ") ,s)  \
- \
-
+#define confusion(s) fatal(_("! This can't happen: ") ,s)
 #define show_banner flags['b']
 #define show_progress flags['p']
 #define show_happiness flags['h']
 #define show_stats flags['s']
 #define make_xrefs flags['x']
-#define check_for_change flags['c'] \
-
-#define update_terminal() fflush(stdout) 
-#define new_line() putchar('\n') 
-#define term_write(a,b) fflush(stdout) ,fwrite(a,sizeof(char) ,b,stdout)  \
-
+#define check_for_change flags['c']
+#define update_terminal() fflush(stdout)
+#define new_line() putchar('\n')
+#define term_write(a,b) fflush(stdout) ,fwrite(a,sizeof(char) ,b,stdout)
 #define buf_size 1000
-#define longest_name 10000 \
-
-#define long_buf_size (buf_size+longest_name) 
-#define max_bytes 1000000 \
-
-#define max_names 10239 \
-
-#define max_sections 4000 \
-
+#define longest_name 10000
+#define long_buf_size (buf_size+longest_name)
+#define max_bytes 1000000
+#define max_names 10239
+#define max_sections 4000
 #define lines_dont_match (change_limit-change_buffer!=limit-buffer|| \
-strncmp(buffer,change_buffer,(size_t) (limit-buffer) ) !=0)  \
-
+strncmp(buffer,change_buffer,(size_t) (limit-buffer) ) !=0)
 #define if_section_start_make_pending(b)  \
 *limit= '!'; \
 for(loc= buffer;xisspace(*loc) ;loc++) ; \
 *limit= ' '; \
-if(*loc=='@'&&(xisspace(*(loc+1) ) ||*(loc+1) =='*') ) change_pending= b \
-
+if(*loc=='@'&&(xisspace(*(loc+1) ) ||*(loc+1) =='*') ) change_pending= b
 #define too_long() {include_depth--; \
-err_print(_("! Include file name too long") ) ;goto restart;} \
-
-#define hash_size 8501 \
-
-#define first_chunk(p) ((p) ->byte_start+2) 
+err_print(_("! Include file name too long") ) ;goto restart;}
+#define hash_size 8501
+#define first_chunk(p) ((p) ->byte_start+2)
 #define prefix_length(p) (size_t) ((eight_bits) *((p) ->byte_start) *256+ \
-(eight_bits) *((p) ->byte_start+1) ) 
+(eight_bits) *((p) ->byte_start+1) )
 #define set_prefix_length(p,m) (*((p) ->byte_start) = (char) ((m) /256) , \
-*((p) ->byte_start+1) = (char) ((m) %256) )  \
-
+*((p) ->byte_start+1) = (char) ((m) %256) )
 #define less 0
 #define equal 1
 #define greater 2
 #define prefix 3
-#define extension 4 \
-
-#define bad_extension 5 \
-
-#define RETURN_OK 0
-#define RETURN_WARN 5
-#define RETURN_ERROR 10
-#define RETURN_FAIL 20 \
-
-#define flag_change (**argv!='-') 
-#define max_banner 50 \
-
+#define extension 4
+#define bad_extension 5
+#define flag_change (**argv!='-')
+#define max_banner 50
 #define PATH_SEPARATOR separators[0]
 #define DIR_SEPARATOR separators[1]
-#define DEVICE_SEPARATOR separators[2] \
+#define DEVICE_SEPARATOR separators[2]
+#define kpse_find_cweb(name) kpse_find_file(name,kpse_cweb_format,true)
 
-#define kpse_find_cweb(name) kpse_find_file(name,kpse_cweb_format,true)  \
-
-
 #line 64 "cwebdir/common.w"
 
 /*2:*/
-#line 33 "cwebdir/comm-w2c.h"
+#line 32 "cwebdir/comm-w2c.h"
 
 typedef uint8_t eight_bits;
 typedef uint16_t sixteen_bits;
@@ -190,7 +157,7 @@
 extern int phase;
 
 /*:2*//*5:*/
-#line 97 "cwebdir/comm-w2c.h"
+#line 108 "cwebdir/comm-w2c.h"
 
 extern char section_text[];
 extern char*section_text_end;
@@ -198,7 +165,7 @@
 extern char*id_loc;
 
 /*:5*//*6:*/
-#line 115 "cwebdir/comm-w2c.h"
+#line 126 "cwebdir/comm-w2c.h"
 
 extern char buffer[];
 extern char*buffer_end;
@@ -206,7 +173,7 @@
 extern char*limit;
 
 /*:6*//*7:*/
-#line 132 "cwebdir/comm-w2c.h"
+#line 143 "cwebdir/comm-w2c.h"
 
 extern int include_depth;
 extern FILE*file[];
@@ -218,20 +185,20 @@
 extern int line[];
 extern int change_line;
 extern int change_depth;
-extern boolean input_has_ended;
-extern boolean changing;
-extern boolean web_file_open;
+extern bool input_has_ended;
+extern bool changing;
+extern bool web_file_open;
 
 /*:7*//*9:*/
-#line 153 "cwebdir/comm-w2c.h"
+#line 164 "cwebdir/comm-w2c.h"
 
 extern sixteen_bits section_count;
-extern boolean changed_section[];
-extern boolean change_pending;
-extern boolean print_where;
+extern bool changed_section[];
+extern bool change_pending;
+extern bool print_where;
 
 /*:9*//*10:*/
-#line 168 "cwebdir/comm-w2c.h"
+#line 179 "cwebdir/comm-w2c.h"
 
 typedef struct name_info{
 char*byte_start;
@@ -256,12 +223,12 @@
 extern hash_pointer hash_ptr;
 
 /*:10*//*12:*/
-#line 213 "cwebdir/comm-w2c.h"
+#line 224 "cwebdir/comm-w2c.h"
 
 extern int history;
 
 /*:12*//*14:*/
-#line 234 "cwebdir/comm-w2c.h"
+#line 245 "cwebdir/comm-w2c.h"
 
 extern int argc;
 extern char**argv;
@@ -270,11 +237,11 @@
 extern char idx_file_name[];
 extern char scn_file_name[];
 extern char check_file_name[];
-extern boolean flags[];
+extern bool flags[];
 extern const char*use_language;
 
 /*:14*//*15:*/
-#line 250 "cwebdir/comm-w2c.h"
+#line 261 "cwebdir/comm-w2c.h"
 
 extern FILE*C_file;
 extern FILE*tex_file;
@@ -329,9 +296,9 @@
 int line[max_include_depth];
 int change_line;
 int change_depth;
-boolean input_has_ended;
-boolean changing;
-boolean web_file_open= false;
+bool input_has_ended;
+bool changing;
+bool web_file_open= false;
 
 /*:25*//*26:*/
 #line 216 "cwebdir/common.w"
@@ -343,10 +310,10 @@
 #line 545 "cwebdir/common.w"
 
 sixteen_bits section_count;
-boolean changed_section[max_sections];
-boolean change_pending;
+bool changed_section[max_sections];
+bool change_pending;
 
-boolean print_where= false;
+bool print_where= false;
 
 /*:42*//*43:*/
 #line 590 "cwebdir/common.w"
@@ -382,11 +349,11 @@
 char C_file_name[max_file_name_length];
 char tex_file_name[max_file_name_length];
 char idx_file_name[max_file_name_length];
-#line 456 "cwebdir/comm-w2c.ch"
+#line 422 "cwebdir/comm-w2c.ch"
 char scn_file_name[max_file_name_length];
 char check_file_name[max_file_name_length];
 #line 1131 "cwebdir/common.w"
-boolean flags[128];
+bool flags[128];
 
 /*:73*//*83:*/
 #line 1267 "cwebdir/common.w"
@@ -395,20 +362,20 @@
 FILE*tex_file;
 FILE*idx_file;
 FILE*scn_file;
-#line 584 "cwebdir/comm-w2c.ch"
+#line 544 "cwebdir/comm-w2c.ch"
 FILE*active_file;
 FILE*check_file;
 #line 1273 "cwebdir/common.w"
 
-#line 601 "cwebdir/comm-w2c.ch"
+#line 561 "cwebdir/comm-w2c.ch"
 /*:83*//*86:*/
-#line 629 "cwebdir/comm-w2c.ch"
+#line 589 "cwebdir/comm-w2c.ch"
 
 const char*use_language= "";
 
 
 /*:86*//*87:*/
-#line 642 "cwebdir/comm-w2c.ch"
+#line 602 "cwebdir/comm-w2c.ch"
 
 char cb_banner[max_banner];
 string texmf_locale;
@@ -415,7 +382,7 @@
 #ifndef SEPARATORS
 #define SEPARATORS "://"
 #endif
-#line 648 "cwebdir/comm-w2c.ch"
+#line 608 "cwebdir/comm-w2c.ch"
  char separators[]= SEPARATORS;
 
 /*:87*/
@@ -422,33 +389,33 @@
 #line 66 "cwebdir/common.w"
 
 /*3:*/
-#line 43 "cwebdir/comm-w2c.h"
+#line 42 "cwebdir/comm-w2c.h"
 
 extern void common_init(void);
 
 /*:3*//*8:*/
-#line 147 "cwebdir/comm-w2c.h"
+#line 158 "cwebdir/comm-w2c.h"
 
-extern boolean get_line(void);
+extern bool get_line(void);
 extern void check_complete(void);
 extern void reset_input(void);
 
 /*:8*//*11:*/
-#line 191 "cwebdir/comm-w2c.h"
+#line 202 "cwebdir/comm-w2c.h"
 
 extern name_pointer id_lookup(const char*,const char*,eight_bits);
 
-extern name_pointer section_lookup(char*,char*,boolean);
+extern name_pointer section_lookup(char*,char*,bool);
 extern void print_prefix_name(name_pointer);
 extern void print_section_name(name_pointer);
 extern void sprint_section_name(char*,name_pointer);
 
-extern boolean names_match(name_pointer,const char*,size_t,eight_bits);
+extern bool names_match(name_pointer,const char*,size_t,eight_bits);
 
 extern void init_node(name_pointer);
 
 /*:11*//*13:*/
-#line 216 "cwebdir/comm-w2c.h"
+#line 227 "cwebdir/comm-w2c.h"
 
 extern int wrap_up(void);
 extern void err_print(const char*);
@@ -461,7 +428,7 @@
 
 /*:13*//*24:*/
 #line 176 "cwebdir/common.w"
-static boolean input_ln(FILE*);
+static bool input_ln(FILE*);
 
 /*:24*//*28:*/
 #line 237 "cwebdir/common.w"
@@ -475,8 +442,8 @@
 #line 760 "cwebdir/common.w"
 
 static int web_strcmp(char*,size_t,char*,size_t);
-static name_pointer add_section_name(name_pointer,int,char*,char*,boolean);
-static void extend_section_name(name_pointer,char*,char*,boolean);
+static name_pointer add_section_name(name_pointer,int,char*,char*,bool);
+static void extend_section_name(name_pointer,char*,char*,bool);
 
 /*:55*//*64:*/
 #line 987 "cwebdir/common.w"
@@ -486,9 +453,9 @@
 #line 1184 "cwebdir/common.w"
 static void scan_args(void);
 
-#line 514 "cwebdir/comm-w2c.ch"
+#line 474 "cwebdir/comm-w2c.ch"
 /*:76*//*98:*/
-#line 836 "cwebdir/comm-w2c.ch"
+#line 796 "cwebdir/comm-w2c.ch"
 
 static void cb_usage(const_string str);
 static void cb_usagehelp(const_string*message);
@@ -516,7 +483,7 @@
 #line 78 "cwebdir/comm-w2c.ch"
 
 /*94:*/
-#line 798 "cwebdir/comm-w2c.ch"
+#line 758 "cwebdir/comm-w2c.ch"
 
 kpse_set_program_name(argv[0],"cweb");
 
@@ -525,7 +492,7 @@
 
 #line 85 "cwebdir/comm-w2c.ch"
 /*92:*/
-#line 748 "cwebdir/comm-w2c.ch"
+#line 708 "cwebdir/comm-w2c.ch"
 
 setlocale(LC_MESSAGES,setlocale(LC_CTYPE,""));
 texmf_locale= kpse_var_expand("${TEXMFLOCALEDIR}");
@@ -546,9 +513,7 @@
 /*74:*/
 #line 1137 "cwebdir/common.w"
 
-#line 463 "cwebdir/comm-w2c.ch"
-make_xrefs= true;
-#line 1139 "cwebdir/common.w"
+show_banner= show_happiness= show_progress= make_xrefs= true;
 
 /*:74*/
 #line 86 "cwebdir/comm-w2c.ch"
@@ -555,12 +520,12 @@
 
 #line 101 "cwebdir/common.w"
 /*84:*/
-#line 601 "cwebdir/comm-w2c.ch"
+#line 561 "cwebdir/comm-w2c.ch"
 
 scan_args();
 if(program==ctangle){
 if(check_for_change)/*88:*/
-#line 659 "cwebdir/comm-w2c.ch"
+#line 619 "cwebdir/comm-w2c.ch"
 {
 if((C_file= fopen(C_file_name,"a"))==NULL)
 fatal(_("! Cannot open output file "),C_file_name);
@@ -577,7 +542,7 @@
 }
 
 /*:88*/
-#line 604 "cwebdir/comm-w2c.ch"
+#line 564 "cwebdir/comm-w2c.ch"
 
 else if((C_file= fopen(C_file_name,"wb"))==NULL)
 fatal(_("! Cannot open output file "),C_file_name);
@@ -585,7 +550,7 @@
 }
 else{
 if(check_for_change)/*89:*/
-#line 674 "cwebdir/comm-w2c.ch"
+#line 634 "cwebdir/comm-w2c.ch"
 {
 if((tex_file= fopen(tex_file_name,"a"))==NULL)
 fatal(_("! Cannot open output file "),tex_file_name);
@@ -602,7 +567,7 @@
 }
 
 /*:89*/
-#line 610 "cwebdir/comm-w2c.ch"
+#line 570 "cwebdir/comm-w2c.ch"
 
 else if((tex_file= fopen(tex_file_name,"wb"))==NULL)
 fatal(_("! Cannot open output file "),tex_file_name);
@@ -609,7 +574,7 @@
 }
 #line 1285 "cwebdir/common.w"
 
-#line 619 "cwebdir/comm-w2c.ch"
+#line 579 "cwebdir/comm-w2c.ch"
 /*:84*/
 #line 101 "cwebdir/common.w"
 
@@ -618,7 +583,7 @@
 /*:20*//*23:*/
 #line 156 "cwebdir/common.w"
 
-static boolean input_ln(
+static bool input_ln(
 FILE*fp)
 {
 int c= EOF;
@@ -776,7 +741,7 @@
 /*:32*//*35:*/
 #line 362 "cwebdir/common.w"
 
-boolean get_line(void)
+bool get_line(void)
 {
 restart:
 if(changing&&include_depth==change_depth)
@@ -1107,7 +1072,7 @@
 int c,
 char*first,
 char*last,
-boolean ispref)
+bool ispref)
 {
 name_pointer p= name_ptr;
 char*s= first_chunk(p);
@@ -1138,7 +1103,7 @@
 name_pointer p,
 char*first,
 char*last,
-boolean ispref)
+bool ispref)
 {
 char*s;
 name_pointer q= p+1;
@@ -1164,7 +1129,7 @@
 name_pointer
 section_lookup(
 char*first,char*last,
-boolean ispref)
+bool ispref)
 {
 int c= less;
 name_pointer p= root;
@@ -1275,7 +1240,7 @@
 name_pointer q= r+1;
 char*ss,*s= first_chunk(r);
 int c= less;
-boolean ispref;
+bool ispref;
 while(true){
 ss= (r+1)->byte_start-1;
 if(*ss==' '&&ss>=r->byte_start)ispref= true,q= q->link;
@@ -1343,12 +1308,12 @@
 if(show_progress||show_happiness||history!=spotless)new_line();
 if(show_stats)
 print_stats();
-#line 403 "cwebdir/comm-w2c.ch"
+#line 381 "cwebdir/comm-w2c.ch"
 /*69:*/
 #line 1073 "cwebdir/common.w"
 
 switch(history){
-#line 429 "cwebdir/comm-w2c.ch"
+#line 395 "cwebdir/comm-w2c.ch"
 case spotless:
 if(show_happiness)puts(_("(No errors were found.)"));break;
 case harmless_message:
@@ -1361,10 +1326,10 @@
 }
 
 /*:69*/
-#line 403 "cwebdir/comm-w2c.ch"
+#line 381 "cwebdir/comm-w2c.ch"
 
 /*90:*/
-#line 692 "cwebdir/comm-w2c.ch"
+#line 652 "cwebdir/comm-w2c.ch"
 
 if(C_file)fclose(C_file);
 if(tex_file)fclose(tex_file);
@@ -1373,17 +1338,12 @@
 remove(check_file_name);
 
 /*:90*/
-#line 404 "cwebdir/comm-w2c.ch"
+#line 382 "cwebdir/comm-w2c.ch"
 
-#line 411 "cwebdir/comm-w2c.ch"
-switch(history){
-case spotless:return RETURN_OK;
-case harmless_message:return RETURN_WARN;
-case error_message:return RETURN_ERROR;
-case fatal_message:default:return RETURN_FAIL;
+#line 1069 "cwebdir/common.w"
+if(history> harmless_message)return EXIT_FAILURE;
+else return EXIT_SUCCESS;
 }
-#line 1071 "cwebdir/common.w"
-}
 
 /*:68*//*70:*/
 #line 1091 "cwebdir/common.w"
@@ -1402,7 +1362,7 @@
 overflow(
 const char*t)
 {
-#line 442 "cwebdir/comm-w2c.ch"
+#line 408 "cwebdir/comm-w2c.ch"
 printf(_("\n! Sorry, %s capacity exceeded"),t);fatal("","");
 #line 1107 "cwebdir/common.w"
 }
@@ -1417,20 +1377,20 @@
 char*dot_pos;
 char*name_pos;
 char*s;
-boolean found_web= false,found_change= false,found_out= false;
+bool found_web= false,found_change= false,found_out= false;
 
 
-#line 486 "cwebdir/comm-w2c.ch"
+#line 446 "cwebdir/comm-w2c.ch"
 strcpy(change_file_name,"/dev/null");
 #if defined DEV_NULL
 strncpy(change_file_name,DEV_NULL,max_file_name_length-2);
 change_file_name[max_file_name_length-2]= '\0';
 #elif defined _DEV_NULL
-#line 491 "cwebdir/comm-w2c.ch"
+#line 451 "cwebdir/comm-w2c.ch"
  strncpy(change_file_name,_DEV_NULL,max_file_name_length-2);
 change_file_name[max_file_name_length-2]= '\0';
 #endif
-#line 494 "cwebdir/comm-w2c.ch"
+#line 454 "cwebdir/comm-w2c.ch"
 
 #line 1166 "cwebdir/common.w"
  while(--argc> 0){
@@ -1437,12 +1397,12 @@
 if((**(++argv)=='-'||**argv=='+')&&*(*argv+1))/*80:*/
 #line 1245 "cwebdir/common.w"
 
-#line 527 "cwebdir/comm-w2c.ch"
+#line 487 "cwebdir/comm-w2c.ch"
 {
 if(strcmp("-help",*argv)==0||strcmp("--help",*argv)==0)
 
 /*97:*/
-#line 827 "cwebdir/comm-w2c.ch"
+#line 787 "cwebdir/comm-w2c.ch"
 
 cb_usagehelp(program==ctangle?CTANGLEHELP:
 program==cweave?CWEAVEHELP:CTWILLHELP);
@@ -1449,12 +1409,12 @@
 
 
 /*:97*/
-#line 530 "cwebdir/comm-w2c.ch"
+#line 490 "cwebdir/comm-w2c.ch"
 
 if(strcmp("-version",*argv)==0||strcmp("--version",*argv)==0)
 
 /*100:*/
-#line 873 "cwebdir/comm-w2c.ch"
+#line 833 "cwebdir/comm-w2c.ch"
 
 printversionandexit(cb_banner,
 program==ctwill?"Donald E. Knuth":"Silvio Levy and Donald E. Knuth",
@@ -1462,7 +1422,7 @@
 
 
 /*:100*/
-#line 533 "cwebdir/comm-w2c.ch"
+#line 493 "cwebdir/comm-w2c.ch"
 
 if(strcmp("-verbose",*argv)==0||strcmp("--verbose",*argv)==0)
 
@@ -1476,15 +1436,15 @@
 case'q':show_banner= show_progress= show_happiness= false;continue;
 case'd':
 if(sscanf(++dot_pos,"%u",&kpathsea_debug)!=1)/*81:*/
-#line 570 "cwebdir/comm-w2c.ch"
+#line 530 "cwebdir/comm-w2c.ch"
 
 cb_usage(program==ctangle?"ctangle":program==cweave?"cweave":"ctwill");
 
 #line 1260 "cwebdir/common.w"
 
-#line 578 "cwebdir/comm-w2c.ch"
+#line 538 "cwebdir/comm-w2c.ch"
 /*:81*/
-#line 545 "cwebdir/comm-w2c.ch"
+#line 505 "cwebdir/comm-w2c.ch"
 
 while(isdigit(*dot_pos))dot_pos++;
 dot_pos--;
@@ -1497,7 +1457,7 @@
 }
 #line 1248 "cwebdir/common.w"
 
-#line 570 "cwebdir/comm-w2c.ch"
+#line 530 "cwebdir/comm-w2c.ch"
 /*:80*/
 #line 1167 "cwebdir/common.w"
 
@@ -1504,7 +1464,7 @@
 else{
 s= name_pos= *argv;dot_pos= NULL;
 while(*s)
-#line 502 "cwebdir/comm-w2c.ch"
+#line 462 "cwebdir/comm-w2c.ch"
 if(*s=='.')dot_pos= s++;
 else if(*s==DIR_SEPARATOR||*s==DEVICE_SEPARATOR||*s=='/')
 dot_pos= NULL,name_pos= ++s;
@@ -1517,7 +1477,7 @@
 {
 if(s-*argv> max_file_name_length-5)
 /*82:*/
-#line 578 "cwebdir/comm-w2c.ch"
+#line 538 "cwebdir/comm-w2c.ch"
 fatal(_("! Filename too long\n"),*argv);
 #line 1262 "cwebdir/common.w"
 
@@ -1551,7 +1511,7 @@
 if(strcmp(*argv,"-")!=0){
 if(s-*argv> max_file_name_length-4)
 /*82:*/
-#line 578 "cwebdir/comm-w2c.ch"
+#line 538 "cwebdir/comm-w2c.ch"
 fatal(_("! Filename too long\n"),*argv);
 #line 1262 "cwebdir/common.w"
 
@@ -1575,7 +1535,7 @@
 {
 if(s-*argv> max_file_name_length-5)
 /*82:*/
-#line 578 "cwebdir/comm-w2c.ch"
+#line 538 "cwebdir/comm-w2c.ch"
 fatal(_("! Filename too long\n"),*argv);
 #line 1262 "cwebdir/common.w"
 
@@ -1602,13 +1562,13 @@
 #line 1177 "cwebdir/common.w"
 
 else/*81:*/
-#line 570 "cwebdir/comm-w2c.ch"
+#line 530 "cwebdir/comm-w2c.ch"
 
 cb_usage(program==ctangle?"ctangle":program==cweave?"cweave":"ctwill");
 
 #line 1260 "cwebdir/common.w"
 
-#line 578 "cwebdir/comm-w2c.ch"
+#line 538 "cwebdir/comm-w2c.ch"
 /*:81*/
 #line 1178 "cwebdir/common.w"
 
@@ -1615,13 +1575,13 @@
 }
 }
 if(!found_web)/*81:*/
-#line 570 "cwebdir/comm-w2c.ch"
+#line 530 "cwebdir/comm-w2c.ch"
 
 cb_usage(program==ctangle?"ctangle":program==cweave?"cweave":"ctwill");
 
 #line 1260 "cwebdir/common.w"
 
-#line 578 "cwebdir/comm-w2c.ch"
+#line 538 "cwebdir/comm-w2c.ch"
 /*:81*/
 #line 1181 "cwebdir/common.w"
 
@@ -1628,7 +1588,7 @@
 }
 
 /*:75*//*99:*/
-#line 840 "cwebdir/comm-w2c.ch"
+#line 800 "cwebdir/comm-w2c.ch"
 
 static void cb_usage(const_string str)
 {
@@ -1660,7 +1620,7 @@
 }
 
 /*:99*//*101:*/
-#line 881 "cwebdir/comm-w2c.ch"
+#line 841 "cwebdir/comm-w2c.ch"
 
 void cb_show_banner(void)
 {

Modified: branches/stable/source/src/texk/web2c/cwebdir/ChangeLog
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/ChangeLog	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/ChangeLog	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,3 +1,80 @@
+2025-04-30  Andreas Scherer  <https://ascherer.github.io>
+
+	* comm-w2c.ch,
+	* po/de/web2c-help.po,
+	* po/web2c-help.pot: Restore default behavior of generic CWEB.
+
+2025-04-18  Andreas Scherer  <https://ascherer.github.io>
+
+	* comm-w2c.h,
+	* common.c,
+	* common.h,
+	* ctangle.c: Amend special characters.
+
+2025-04-17  Andreas Scherer  <https://ascherer.github.io>
+
+	* Makefile,
+	* comm-w2c.h,
+	* common.c,
+	* common.h,
+	* ctang-w2c.ch,
+	* ctangle.c,
+	* ctangle.w: Make proper use of 'ishigh' macro.
+
+2025-04-09  Andreas Scherer  <https://ascherer.github.io>
+
+	* comm-bs.ch,
+	* comm-mac.ch,
+	* comm-mini.ch,
+	* comm-w2c.ch,
+	* comm-w2c.h,
+	* comm-w32.ch,
+	* common.bux,
+	* common.c,
+	* common.h,
+	* common.w,
+	* ctang-w2c.ch,
+	* ctang-w32.ch,
+	* ctangle.c,
+	* ctangle.w,
+	* ctwill-hint.ch,
+	* ctwill-mini.ch,
+	* ctwill-w2c.ch,
+	* ctwill.bux,
+	* cweav-w2c.ch,
+	* cweav-w32.ch,
+	* cweave.w: Replace type 'boolean' with 'bool'.
+
+2025-04-09  Andreas Scherer  <https://ascherer.github.io>
+
+	* comm-w2c.ch,
+	* comm-w2c.h,
+	* ctwill-mini.ch,
+	* ctwill-w2c.ch: Revert bool change for C23.
+
+2025-03-31  Andreas Scherer  <https://ascherer.github.io>
+
+	* common.c,
+	* ctangle.c,
+	* ctangle.w: Discard trailing whitespace in macros.
+
+2025-03-12  Andreas Scherer  <https://ascherer.github.io>
+
+	* ctwill-w2c.ch,
+	* cweav-w2c.ch,
+	* cweave.w,
+	* po/cweb.pot,
+	* po/de/cweb.po,
+	* po/it/cweb.po: Handle verbatim strings in TeX part.
+
+2025-02-26  Andreas Scherer  <https://ascherer.github.io>
+
+	* tests/ham-sorted.tex,
+	* tests/ham.ch,
+	* tests/ham.ref,
+	* tests/ham.sref,
+	* tests/ham.tex: Command-line option 'm' is no SGB variable.
+
 2025-02-02  Andreas Scherer  <https://ascherer.github.io>
 
 	* ctwill-mini.ch: Avoid several 'Overfull \vbox'es.

Modified: branches/stable/source/src/texk/web2c/cwebdir/Makefile
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/Makefile	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/Makefile	2025-05-17 22:44:20 UTC (rev 964)
@@ -56,7 +56,7 @@
 #LINKFLAGS = -s # for smaller (stripped) executables on many UNIX systems
 
 # What C compiler are you using?
-CC = cc
+#CC = cc
 
 # RM and CP are used below in case rm and cp are aliased
 RM= /bin/rm

Modified: branches/stable/source/src/texk/web2c/cwebdir/comm-bs.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/comm-bs.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/comm-bs.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -141,7 +141,7 @@
 int c, /* right or left? */
 char *first, /* first character of section name */
 char *last, /* last character of section name, plus one */
-boolean ispref) /* are we adding a prefix or a full name? */
+bool ispref) /* are we adding a prefix or a full name? */
 {
   name_pointer p=name_ptr; /* new node */
   char *s=first_chunk(p);
@@ -152,7 +152,7 @@
 int c, /* right or left? */
 char huge* first, /* first character of section name */
 char huge* last, /* last character of section name, plus one */
-boolean ispref) /* are we adding a prefix or a full name? */
+bool ispref) /* are we adding a prefix or a full name? */
 {
   name_pointer p=name_ptr; /* new node */
   char huge* s=first_chunk(p);
@@ -165,7 +165,7 @@
 name_pointer p, /* name to be extended */
 char *first, /* beginning of extension text */
 char *last, /* one beyond end of extension text */
-boolean ispref) /* are we adding a prefix or a full name? */
+bool ispref) /* are we adding a prefix or a full name? */
 {
   char *s;
 @y
@@ -174,7 +174,7 @@
 name_pointer p, /* name to be extended */
 char huge* first, /* beginning of extension text */
 char huge* last, /* one beyond end of extension text */
-boolean ispref) /* are we adding a prefix or a full name? */
+bool ispref) /* are we adding a prefix or a full name? */
 {
   char huge* s;
 @z

Modified: branches/stable/source/src/texk/web2c/cwebdir/comm-mac.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/comm-mac.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/comm-mac.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -15,7 +15,7 @@
 @^system dependencies@>
 
 @c
-static boolean input_ln( /* copies a line into |buffer| or returns |false| */
+static bool input_ln( /* copies a line into |buffer| or returns |false| */
 FILE *fp) /* what file to read from */
 {
   int c=EOF; /* character read; initialized so some compilers won't complain */
@@ -43,7 +43,7 @@
 @^system dependencies@>
 
 @c
-static boolean input_ln( /* copies a line into |buffer| or returns |false| */
+static bool input_ln( /* copies a line into |buffer| or returns |false| */
 FILE *fp) /* what file to read from */
 {
   int  c=EOF; /* character read; initialized so some compilers won't complain */

Modified: branches/stable/source/src/texk/web2c/cwebdir/comm-mini.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/comm-mini.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/comm-mini.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -58,11 +58,11 @@
 Section 24.
 
 @x
-@ @<Predecl...@>=@+static boolean input_ln(FILE *);
+@ @<Predecl...@>=@+static bool input_ln(FILE *);
 @y
-@ @<Predecl...@>=@+static boolean input_ln(FILE *);
+@ @<Predecl...@>=@+static bool input_ln(FILE *);
 @-input_ln@>
-@$input_ln {COMMON}23 \&{static} \&{boolean} (\,)@>
+@$input_ln {COMMON}23 \&{static} \&{bool} (\,)@>
 @z
 
 ẞection 28.

Modified: branches/stable/source/src/texk/web2c/cwebdir/comm-w2c.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/comm-w2c.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/comm-w2c.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -67,7 +67,7 @@
 @z
 
 @x [1.18] l.80
-boolean program; /* \.{CWEAVE} or \.{CTANGLE}? */
+bool program; /* \.{CWEAVE} or \.{CTANGLE}? */
 @y
 cweb program; /* \.{CTANGLE} or \.{CWEAVE} or \.{CTWILL}? */
 @z
@@ -375,28 +375,6 @@
   else printf(_(". (l. %d of include file %s)\n"), cur_line, cur_file_name);
 @z
 
- at x [6.68] l.1057
-Some implementations may wish to pass the |history| value to the
-operating system so that it can be used to govern whether or not other
-programs are started. Here, for instance, we pass the operating system
-a status of |EXIT_SUCCESS| if and only if only harmless messages were printed.
-@^system dependencies@>
- at y
-On multi-tasking systems like the {\mc AMIGA} it is very convenient to
-know a little bit more about the reasons why a program failed.  The four
-levels of return indicated by the |history| value are very suitable for
-this purpose.  Here, for instance, we pass the operating system a status
-of~0 if and only if the run was a complete success.  Any warning or error
-message will result in a higher return value, so that {\mc AREXX} scripts
-can be made sensitive to these conditions.
-@^system dependencies@>
-
- at d RETURN_OK     0 /* No problems, success */
- at d RETURN_WARN   5 /* A warning only */
- at d RETURN_ERROR 10 /* Something wrong */
- at d RETURN_FAIL  20 /* Complete or severe failure */
- at z
-
 @x [6.68] l.1068
   @<Print the job |history|@>@;
 @y
@@ -404,18 +382,6 @@
   @<Remove the temporary file if not already done@>@;
 @z
 
- at x [6.68] l.1069
-  if (history > harmless_message) return EXIT_FAILURE;
-  else return EXIT_SUCCESS;
- at y
-  switch(history) {
-  case spotless: return RETURN_OK;
-  case harmless_message: return RETURN_WARN;
-  case error_message: return RETURN_ERROR;
-  case fatal_message: default: return RETURN_FAIL;
-  }
- at z
-
 @x [6.69] l.1075
 case spotless:
   if (show_happiness) puts("(No errors were found.)"); break;
@@ -457,12 +423,6 @@
 char check_file_name[max_file_name_length]; /* name of |check_file| */
 @z
 
- at x [7.74] l.1138
-show_banner=show_happiness=show_progress=make_xrefs=true;
- at y
-make_xrefs=true;
- at z
-
 @x [7.75] l.1142
 file.  It may have an extension, or it may omit the extension to get |".w"| or
 |".web"| added.  The \TEX/ output file name is formed by replacing the \.{CWEB}

Modified: branches/stable/source/src/texk/web2c/cwebdir/comm-w2c.h
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/comm-w2c.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/comm-w2c.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -29,7 +29,6 @@
 
 @i iso_types.w
 
- at s boolean bool
 @<Common code...@>=@^system dependencies@>
 typedef uint8_t eight_bits;
 typedef uint16_t sixteen_bits;
@@ -48,15 +47,12 @@
 `|@!gettext|' function from the ``GNU~gettext utilities.'' For systems that do
 not have this library installed, we wrap things for neutral behavior without
 internationalization.
-For backward compatibility with pre-{\mc ANSI} compilers, we replace the
-``standard'' header file `\.{stdbool.h}' with the@^system dependencies@>
-{\mc KPATHSEA\spacefactor1000} interface `\.{simpletypes.h}'.
 
 @d _(s) gettext(s)
 
 @<Include files@>=
 #include <ctype.h> /* definition of |@!isalpha|, |@!isdigit| and so on */
-#include <kpathsea/simpletypes.h> /* |@!boolean|, |@!true| and |@!false| */
+#include <stdbool.h> /* definition of |@!bool|, |@!true| and |@!false| */
 #include <stddef.h> /* definition of |@!ptrdiff_t| */
 #include <stdint.h> /* definition of |@!uint8_t| and |@!uint16_t| */
 #include <stdio.h> /* definition of |@!printf| and friends */
@@ -76,21 +72,36 @@
 @ Code related to the character set:
 @^ASCII code dependencies@>
 
- at d and_and 04 /* `\.{\&\&}'\,; corresponds to MIT's {\tentex\char'4} */
- at d lt_lt 020 /* `\.{<<}'\,; corresponds to MIT's {\tentex\char'20} */
- at d gt_gt 021 /* `\.{>>}'\,; corresponds to MIT's {\tentex\char'21} */
- at d plus_plus 013 /* `\.{++}'\,; corresponds to MIT's {\tentex\char'13} */
- at d minus_minus 01 /* `\.{--}'\,; corresponds to MIT's {\tentex\char'1} */
- at d minus_gt 031 /* `\.{->}'\,; corresponds to MIT's {\tentex\char'31} */
- at d non_eq 032 /* `\.{!=}'\,; corresponds to MIT's {\tentex\char'32} */
- at d lt_eq 034 /* `\.{<=}'\,; corresponds to MIT's {\tentex\char'34} */
- at d gt_eq 035 /* `\.{>=}'\,; corresponds to MIT's {\tentex\char'35} */
- at d eq_eq 036 /* `\.{==}'\,; corresponds to MIT's {\tentex\char'36} */
- at d or_or 037 /* `\.{\v\v}'\,; corresponds to MIT's {\tentex\char'37} */
- at d dot_dot_dot 016 /* `\.{...}'\,; corresponds to MIT's {\tentex\char'16} */
- at d colon_colon 06 /* `\.{::}'\,; corresponds to MIT's {\tentex\char'6} */
- at d period_ast 026 /* `\.{.*}'\,; corresponds to MIT's {\tentex\char'26} */
- at d minus_gt_ast 027 /* `\.{->*}'\,; corresponds to MIT's {\tentex\char'27} */
+ at d and_and 04 /* `\.{\&\&}'\,; corresponds to MIT's {\tentex\char'4}
+  and ASCII~\.{EOT} */
+ at d lt_lt 020 /* `\.{<<}'\,; corresponds to MIT's {\tentex\char'20}
+  and ASCII~\.{DLE} */
+ at d gt_gt 021 /* `\.{>>}'\,; corresponds to MIT's {\tentex\char'21}
+  and ASCII~\.{DC1} */
+ at d plus_plus 013 /* `\.{++}'\,; corresponds to MIT's {\tentex\char'13}
+  and ASCII~\.{VT} aka~|'\v'|  */
+ at d minus_minus 01 /* `\.{--}'\,; corresponds to MIT's {\tentex\char'1}
+  and ASCII~\.{SOH} */
+ at d minus_gt 031 /* `\.{->}'\,; corresponds to MIT's {\tentex\char'31}
+  and ASCII~\.{EM} */
+ at d non_eq 032 /* `\.{!=}'\,; corresponds to MIT's {\tentex\char'32}
+  and ASCII~\.{SUB} */
+ at d lt_eq 034 /* `\.{<=}'\,; corresponds to MIT's {\tentex\char'34}
+  and ASCII~\.{FS} */
+ at d gt_eq 035 /* `\.{>=}'\,; corresponds to MIT's {\tentex\char'35}
+  and ASCII~\.{GS} */
+ at d eq_eq 036 /* `\.{==}'\,; corresponds to MIT's {\tentex\char'36}
+  and ASCII~\.{RS} */
+ at d or_or 037 /* `\.{\v\v}'\,; corresponds to MIT's {\tentex\char'37}
+  and ASCII~\.{US} */
+ at d dot_dot_dot 016 /* `\.{...}'\,; corresponds to MIT's {\tentex\char'16}
+  and ASCII~\.{SO} */
+ at d colon_colon 06 /* `\.{::}'\,; corresponds to MIT's {\tentex\char'6}
+  and ASCII~\.{ACK} */
+ at d period_ast 026 /* `\.{.*}'\,; corresponds to MIT's {\tentex\char'26}
+  and ASCII~\.{SYN} */
+ at d minus_gt_ast 027 /* `\.{->*}'\,; corresponds to MIT's {\tentex\char'27}
+  and ASCII~\.{ETB} */
 @#
 @d compress(c) if (loc++<=limit) return c
 
@@ -101,12 +112,12 @@
 extern char *id_loc; /* just after the current identifier in the buffer */
 
 @ Code related to input routines:
- at d xisalpha(c) (isalpha((int)(c))&&((eight_bits)(c)<0200))
- at d xisdigit(c) (isdigit((int)(c))&&((eight_bits)(c)<0200))
- at d xisspace(c) (isspace((int)(c))&&((eight_bits)(c)<0200))
- at d xislower(c) (islower((int)(c))&&((eight_bits)(c)<0200))
- at d xisupper(c) (isupper((int)(c))&&((eight_bits)(c)<0200))
- at d xisxdigit(c) (isxdigit((int)(c))&&((eight_bits)(c)<0200))
+ at d xisalpha(c) (isalpha((int)(c))&&!ishigh(c))
+ at d xisdigit(c) (isdigit((int)(c))&&!ishigh(c))
+ at d xisspace(c) (isspace((int)(c))&&!ishigh(c))
+ at d xislower(c) (islower((int)(c))&&!ishigh(c))
+ at d xisupper(c) (isupper((int)(c))&&!ishigh(c))
+ at d xisxdigit(c) (isxdigit((int)(c))&&!ishigh(c))
 @d isxalpha(c) ((c)=='_' || (c)=='$')
   /* non-alpha characters allowed in identifier */
 @d ishigh(c) ((eight_bits)(c)>0177)
@@ -140,12 +151,12 @@
 extern int line[]; /* number of current line in the stacked files */
 extern int change_line; /* number of current line in change file */
 extern int change_depth; /* where \.{@@y} originated during a change */
-extern boolean input_has_ended; /* if there is no more input */
-extern boolean changing; /* if the current line is from |change_file| */
-extern boolean web_file_open; /* if the web file is being read */
+extern bool input_has_ended; /* if there is no more input */
+extern bool changing; /* if the current line is from |change_file| */
+extern bool web_file_open; /* if the web file is being read */
 
 @ @<Predecl...@>=
-extern boolean get_line(void); /* inputs the next line */
+extern bool get_line(void); /* inputs the next line */
 extern void check_complete(void); /* checks that all changes were picked up */
 extern void reset_input(void); /* initialize to read the web file and change file */
 
@@ -152,9 +163,9 @@
 @ Code related to section numbers:
 @<Common code...@>=
 extern sixteen_bits section_count; /* the current section number */
-extern boolean changed_section[]; /* is the section changed? */
-extern boolean change_pending; /* is a decision about change still unclear? */
-extern boolean print_where; /* tells \.{CTANGLE} to print line and file info */
+extern bool changed_section[]; /* is the section changed? */
+extern bool change_pending; /* is a decision about change still unclear? */
+extern bool print_where; /* tells \.{CTANGLE} to print line and file info */
 
 @ Code related to identifier and section name storage:
 @d length(c) (size_t)((c+1)->byte_start-(c)->byte_start) /* the length of a name */
@@ -191,12 +202,12 @@
 @ @<Predecl...@>=
 extern name_pointer id_lookup(const char *,const char *,eight_bits);
    /* looks up a string in the identifier table */
-extern name_pointer section_lookup(char *,char *,boolean); /* finds section name */
+extern name_pointer section_lookup(char *,char *,bool); /* finds section name */
 extern void print_prefix_name(name_pointer);@/
 extern void print_section_name(name_pointer);@/
 extern void sprint_section_name(char *,name_pointer);
 @#
-extern boolean names_match(name_pointer,const char *,size_t,eight_bits);
+extern bool names_match(name_pointer,const char *,size_t,eight_bits);
 /* two routines defined in \.{ctangle.w} and \.{cweave.w} */
 extern void init_node(name_pointer);
 
@@ -239,7 +250,7 @@
 extern char idx_file_name[]; /* name of |idx_file| */
 extern char scn_file_name[]; /* name of |scn_file| */
 extern char check_file_name[]; /* name of |check_file| */
-extern boolean flags[]; /* an option for each 7-bit code */
+extern bool flags[]; /* an option for each 7-bit code */
 extern const char *use_language; /* prefix to \.{cwebmac.tex} in \TEX/ output */
 
 @ Code related to output:

Modified: branches/stable/source/src/texk/web2c/cwebdir/comm-w32.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/comm-w32.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/comm-w32.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -35,9 +35,9 @@
 set of programs using the __fastcall convention.
 
 @x section 11
-extern boolean names_match(name_pointer,const char *,size_t,eight_bits);
+extern bool names_match(name_pointer,const char *,size_t,eight_bits);
 @y
-extern boolean __cdecl names_match(name_pointer,const char *,size_t,eight_bits);
+extern bool __cdecl names_match(name_pointer,const char *,size_t,eight_bits);
 @z
 
 @x section 75

Modified: branches/stable/source/src/texk/web2c/cwebdir/common.bux
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/common.bux	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/common.bux	2025-05-17 22:44:20 UTC (rev 964)
@@ -17,7 +17,7 @@
 @$xref {CWEAVE.W}24 \\{equiv\_or\_xref}@>
 
 @$init_node {CWEAVE.W}32 \&{void} (\,)@>
-@$names_match {CWEAVE.W}32 \&{boolean} (\,)@>
+@$names_match {CWEAVE.W}32 \&{bool} (\,)@>
 
 @$print_stats {CWEAVE.W}270 \&{void} (\,)@>
 

Modified: branches/stable/source/src/texk/web2c/cwebdir/common.c
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/common.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/common.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -2,7 +2,7 @@
 #line 62 "common.w"
 
 /*4:*/
-#line 48 "common.h"
+#line 47 "common.h"
 
 #include <ctype.h>  
 #include <stdbool.h>  
@@ -16,8 +16,7 @@
 #line 63 "common.w"
 
 #define ctangle false
-#define cweave true \
-
+#define cweave true
 #define and_and 04
 #define lt_lt 020
 #define gt_gt 021
@@ -32,38 +31,29 @@
 #define dot_dot_dot 016
 #define colon_colon 06
 #define period_ast 026
-#define minus_gt_ast 027 \
-
-#define compress(c) if(loc++<=limit) return c \
-
-#define xisalpha(c) (isalpha((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisdigit(c) (isdigit((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisspace(c) (isspace((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xislower(c) (islower((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisupper(c) (isupper((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisxdigit(c) (isxdigit((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define isxalpha(c) ((c) =='_'||(c) =='$')  \
-
-#define ishigh(c) ((eight_bits) (c) > 0177)  \
- \
-
-#define max_include_depth 10 \
-
+#define minus_gt_ast 027
+#define compress(c) if(loc++<=limit) return c
+#define xisalpha(c) (isalpha((int) (c) ) &&!ishigh(c) )
+#define xisdigit(c) (isdigit((int) (c) ) &&!ishigh(c) )
+#define xisspace(c) (isspace((int) (c) ) &&!ishigh(c) )
+#define xislower(c) (islower((int) (c) ) &&!ishigh(c) )
+#define xisupper(c) (isupper((int) (c) ) &&!ishigh(c) )
+#define xisxdigit(c) (isxdigit((int) (c) ) &&!ishigh(c) )
+#define isxalpha(c) ((c) =='_'||(c) =='$')
+#define ishigh(c) ((eight_bits) (c) > 0177)
+#define max_include_depth 10
 #define max_file_name_length 60
 #define cur_file file[include_depth]
 #define cur_file_name file_name[include_depth]
 #define cur_line line[include_depth]
 #define web_file file[0]
-#define web_file_name file_name[0] \
-
-#define length(c) (size_t) ((c+1) ->byte_start-(c) ->byte_start) 
-#define print_id(c) term_write((c) ->byte_start,length(c) ) 
+#define web_file_name file_name[0]
+#define length(c) (size_t) ((c+1) ->byte_start-(c) ->byte_start)
+#define print_id(c) term_write((c) ->byte_start,length(c) )
 #define llink link
 #define rlink dummy.Rlink
-#define root name_dir->rlink \
-
-#define ilk dummy.Ilk \
-
+#define root name_dir->rlink
+#define ilk dummy.Ilk
 #define spotless 0
 #define harmless_message 1
 #define error_message 2
@@ -70,72 +60,56 @@
 #define fatal_message 3
 #define mark_harmless() if(history==spotless) history= harmless_message
 #define mark_error() history= error_message
-#define confusion(s) fatal("! This can't happen: ",s)  \
- \
-
+#define confusion(s) fatal("! This can't happen: ",s)
 #define show_banner flags['b']
 #define show_progress flags['p']
 #define show_happiness flags['h']
 #define show_stats flags['s']
-#define make_xrefs flags['x'] \
-
-#define update_terminal() fflush(stdout) 
-#define new_line() putchar('\n') 
-#define term_write(a,b) fflush(stdout) ,fwrite(a,sizeof(char) ,b,stdout)  \
-
+#define make_xrefs flags['x']
+#define update_terminal() fflush(stdout)
+#define new_line() putchar('\n')
+#define term_write(a,b) fflush(stdout) ,fwrite(a,sizeof(char) ,b,stdout)
 #define buf_size 200
-#define longest_name 10000 \
-
-#define long_buf_size (buf_size+longest_name) 
-#define max_bytes 100000 \
-
-#define max_names 5000 \
-
-#define max_sections 2000 \
-
+#define longest_name 10000
+#define long_buf_size (buf_size+longest_name)
+#define max_bytes 100000
+#define max_names 5000
+#define max_sections 2000
 #define lines_dont_match (change_limit-change_buffer!=limit-buffer|| \
-strncmp(buffer,change_buffer,(size_t) (limit-buffer) ) !=0)  \
-
+strncmp(buffer,change_buffer,(size_t) (limit-buffer) ) !=0)
 #define if_section_start_make_pending(b)  \
 *limit= '!'; \
 for(loc= buffer;xisspace(*loc) ;loc++) ; \
 *limit= ' '; \
-if(*loc=='@'&&(xisspace(*(loc+1) ) ||*(loc+1) =='*') ) change_pending= b \
-
+if(*loc=='@'&&(xisspace(*(loc+1) ) ||*(loc+1) =='*') ) change_pending= b
 #define too_long() {include_depth--; \
-err_print("! Include file name too long") ;goto restart;} \
-
-#define hash_size 353 \
-
-#define first_chunk(p) ((p) ->byte_start+2) 
+err_print("! Include file name too long") ;goto restart;}
+#define hash_size 353
+#define first_chunk(p) ((p) ->byte_start+2)
 #define prefix_length(p) (size_t) ((eight_bits) *((p) ->byte_start) *256+ \
-(eight_bits) *((p) ->byte_start+1) ) 
+(eight_bits) *((p) ->byte_start+1) )
 #define set_prefix_length(p,m) (*((p) ->byte_start) = (char) ((m) /256) , \
-*((p) ->byte_start+1) = (char) ((m) %256) )  \
-
+*((p) ->byte_start+1) = (char) ((m) %256) )
 #define less 0
 #define equal 1
 #define greater 2
 #define prefix 3
-#define extension 4 \
+#define extension 4
+#define bad_extension 5
+#define flag_change (**argv!='-')
 
-#define bad_extension 5 \
-
-#define flag_change (**argv!='-') 
-
 #line 64 "common.w"
 
 /*2:*/
 #line 35 "common.h"
 
-typedef bool boolean;
 typedef uint8_t eight_bits;
 typedef uint16_t sixteen_bits;
-extern boolean program;
+extern bool program;
 extern int phase;
 
 /*:2*//*5:*/
-#line 78 "common.h"
+#line 92 "common.h"
 
 extern char section_text[];
 extern char*section_text_end;
@@ -143,7 +117,7 @@
 extern char*id_loc;
 
 /*:5*//*6:*/
-#line 96 "common.h"
+#line 110 "common.h"
 
 extern char buffer[];
 extern char*buffer_end;
@@ -151,7 +125,7 @@
 extern char*limit;
 
 /*:6*//*7:*/
-#line 113 "common.h"
+#line 127 "common.h"
 
 extern int include_depth;
 extern FILE*file[];
@@ -162,20 +136,20 @@
 extern int line[];
 extern int change_line;
 extern int change_depth;
-extern boolean input_has_ended;
-extern boolean changing;
-extern boolean web_file_open;
+extern bool input_has_ended;
+extern bool changing;
+extern bool web_file_open;
 
 /*:7*//*9:*/
-#line 133 "common.h"
+#line 147 "common.h"
 
 extern sixteen_bits section_count;
-extern boolean changed_section[];
-extern boolean change_pending;
-extern boolean print_where;
+extern bool changed_section[];
+extern bool change_pending;
+extern bool print_where;
 
 /*:9*//*10:*/
-#line 148 "common.h"
+#line 162 "common.h"
 
 typedef struct name_info{
 char*byte_start;
@@ -200,12 +174,12 @@
 extern hash_pointer hash_ptr;
 
 /*:10*//*12:*/
-#line 193 "common.h"
+#line 207 "common.h"
 
 extern int history;
 
 /*:12*//*14:*/
-#line 211 "common.h"
+#line 225 "common.h"
 
 extern int argc;
 extern char**argv;
@@ -213,10 +187,10 @@
 extern char tex_file_name[];
 extern char idx_file_name[];
 extern char scn_file_name[];
-extern boolean flags[];
+extern bool flags[];
 
 /*:14*//*15:*/
-#line 225 "common.h"
+#line 239 "common.h"
 
 extern FILE*C_file;
 extern FILE*tex_file;
@@ -230,7 +204,7 @@
 /*18:*/
 #line 79 "common.w"
 
-boolean program;
+bool program;
 
 /*:18*//*19:*/
 #line 88 "common.w"
@@ -266,9 +240,9 @@
 int line[max_include_depth];
 int change_line;
 int change_depth;
-boolean input_has_ended;
-boolean changing;
-boolean web_file_open= false;
+bool input_has_ended;
+bool changing;
+bool web_file_open= false;
 
 /*:25*//*26:*/
 #line 216 "common.w"
@@ -280,10 +254,10 @@
 #line 545 "common.w"
 
 sixteen_bits section_count;
-boolean changed_section[max_sections];
-boolean change_pending;
+bool changed_section[max_sections];
+bool change_pending;
 
-boolean print_where= false;
+bool print_where= false;
 
 /*:42*//*43:*/
 #line 590 "common.w"
@@ -320,7 +294,7 @@
 char tex_file_name[max_file_name_length];
 char idx_file_name[max_file_name_length];
 char scn_file_name[max_file_name_length];
-boolean flags[128];
+bool flags[128];
 
 /*:73*//*83:*/
 #line 1267 "common.w"
@@ -335,33 +309,33 @@
 #line 66 "common.w"
 
 /*3:*/
-#line 43 "common.h"
+#line 42 "common.h"
 
 extern void common_init(void);
 
 /*:3*//*8:*/
-#line 127 "common.h"
+#line 141 "common.h"
 
-extern boolean get_line(void);
+extern bool get_line(void);
 extern void check_complete(void);
 extern void reset_input(void);
 
 /*:8*//*11:*/
-#line 171 "common.h"
+#line 185 "common.h"
 
 extern name_pointer id_lookup(const char*,const char*,eight_bits);
 
-extern name_pointer section_lookup(char*,char*,boolean);
+extern name_pointer section_lookup(char*,char*,bool);
 extern void print_prefix_name(name_pointer);
 extern void print_section_name(name_pointer);
 extern void sprint_section_name(char*,name_pointer);
 
-extern boolean names_match(name_pointer,const char*,size_t,eight_bits);
+extern bool names_match(name_pointer,const char*,size_t,eight_bits);
 
 extern void init_node(name_pointer);
 
 /*:11*//*13:*/
-#line 196 "common.h"
+#line 210 "common.h"
 
 extern int wrap_up(void);
 extern void err_print(const char*);
@@ -372,7 +346,7 @@
 
 /*:13*//*24:*/
 #line 176 "common.w"
-static boolean input_ln(FILE*);
+static bool input_ln(FILE*);
 
 /*:24*//*28:*/
 #line 237 "common.w"
@@ -386,8 +360,8 @@
 #line 760 "common.w"
 
 static int web_strcmp(char*,size_t,char*,size_t);
-static name_pointer add_section_name(name_pointer,int,char*,char*,boolean);
-static void extend_section_name(name_pointer,char*,char*,boolean);
+static name_pointer add_section_name(name_pointer,int,char*,char*,bool);
+static void extend_section_name(name_pointer,char*,char*,bool);
 
 /*:55*//*64:*/
 #line 987 "common.w"
@@ -448,7 +422,7 @@
 /*:20*//*23:*/
 #line 156 "common.w"
 
-static boolean input_ln(
+static bool input_ln(
 FILE*fp)
 {
 int c= EOF;
@@ -590,7 +564,7 @@
 /*:32*//*35:*/
 #line 362 "common.w"
 
-boolean get_line(void)
+bool get_line(void)
 {
 restart:
 if(changing&&include_depth==change_depth)
@@ -903,7 +877,7 @@
 int c,
 char*first,
 char*last,
-boolean ispref)
+bool ispref)
 {
 name_pointer p= name_ptr;
 char*s= first_chunk(p);
@@ -932,7 +906,7 @@
 name_pointer p,
 char*first,
 char*last,
-boolean ispref)
+bool ispref)
 {
 char*s;
 name_pointer q= p+1;
@@ -954,7 +928,7 @@
 name_pointer
 section_lookup(
 char*first,char*last,
-boolean ispref)
+bool ispref)
 {
 int c= less;
 name_pointer p= root;
@@ -1053,7 +1027,7 @@
 name_pointer q= r+1;
 char*ss,*s= first_chunk(r);
 int c= less;
-boolean ispref;
+bool ispref;
 while(true){
 ss= (r+1)->byte_start-1;
 if(*ss==' '&&ss>=r->byte_start)ispref= true,q= q->link;
@@ -1170,7 +1144,7 @@
 char*dot_pos;
 char*name_pos;
 char*s;
-boolean found_web= false,found_change= false,found_out= false;
+bool found_web= false,found_change= false,found_out= false;
 
 
 strcpy(change_file_name,"/dev/null");

Modified: branches/stable/source/src/texk/web2c/cwebdir/common.h
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/common.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/common.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -33,10 +33,9 @@
 @d cweave true
 
 @<Common code...@>=@^system dependencies@>
-typedef bool boolean;
 typedef uint8_t eight_bits;
 typedef uint16_t sixteen_bits;
-extern boolean program; /* \.{CWEAVE} or \.{CTANGLE}? */
+extern bool program; /* \.{CWEAVE} or \.{CTANGLE}? */
 extern int phase; /* which phase are we in? */
 
 @ The procedure that gets everything rolling:
@@ -57,21 +56,36 @@
 @ Code related to the character set:
 @^ASCII code dependencies@>
 
- at d and_and 04 /* `\.{\&\&}'\,; corresponds to MIT's {\tentex\char'4} */
- at d lt_lt 020 /* `\.{<<}'\,; corresponds to MIT's {\tentex\char'20} */
- at d gt_gt 021 /* `\.{>>}'\,; corresponds to MIT's {\tentex\char'21} */
- at d plus_plus 013 /* `\.{++}'\,; corresponds to MIT's {\tentex\char'13} */
- at d minus_minus 01 /* `\.{--}'\,; corresponds to MIT's {\tentex\char'1} */
- at d minus_gt 031 /* `\.{->}'\,; corresponds to MIT's {\tentex\char'31} */
- at d non_eq 032 /* `\.{!=}'\,; corresponds to MIT's {\tentex\char'32} */
- at d lt_eq 034 /* `\.{<=}'\,; corresponds to MIT's {\tentex\char'34} */
- at d gt_eq 035 /* `\.{>=}'\,; corresponds to MIT's {\tentex\char'35} */
- at d eq_eq 036 /* `\.{==}'\,; corresponds to MIT's {\tentex\char'36} */
- at d or_or 037 /* `\.{\v\v}'\,; corresponds to MIT's {\tentex\char'37} */
- at d dot_dot_dot 016 /* `\.{...}'\,; corresponds to MIT's {\tentex\char'16} */
- at d colon_colon 06 /* `\.{::}'\,; corresponds to MIT's {\tentex\char'6} */
- at d period_ast 026 /* `\.{.*}'\,; corresponds to MIT's {\tentex\char'26} */
- at d minus_gt_ast 027 /* `\.{->*}'\,; corresponds to MIT's {\tentex\char'27} */
+ at d and_and 04 /* `\.{\&\&}'\,; corresponds to MIT's {\tentex\char'4}
+  and ASCII~\.{EOT} */
+ at d lt_lt 020 /* `\.{<<}'\,; corresponds to MIT's {\tentex\char'20}
+  and ASCII~\.{DLE} */
+ at d gt_gt 021 /* `\.{>>}'\,; corresponds to MIT's {\tentex\char'21}
+  and ASCII~\.{DC1} */
+ at d plus_plus 013 /* `\.{++}'\,; corresponds to MIT's {\tentex\char'13}
+  and ASCII~\.{VT} aka~|'\v'|  */
+ at d minus_minus 01 /* `\.{--}'\,; corresponds to MIT's {\tentex\char'1}
+  and ASCII~\.{SOH} */
+ at d minus_gt 031 /* `\.{->}'\,; corresponds to MIT's {\tentex\char'31}
+  and ASCII~\.{EM} */
+ at d non_eq 032 /* `\.{!=}'\,; corresponds to MIT's {\tentex\char'32}
+  and ASCII~\.{SUB} */
+ at d lt_eq 034 /* `\.{<=}'\,; corresponds to MIT's {\tentex\char'34}
+  and ASCII~\.{FS} */
+ at d gt_eq 035 /* `\.{>=}'\,; corresponds to MIT's {\tentex\char'35}
+  and ASCII~\.{GS} */
+ at d eq_eq 036 /* `\.{==}'\,; corresponds to MIT's {\tentex\char'36}
+  and ASCII~\.{RS} */
+ at d or_or 037 /* `\.{\v\v}'\,; corresponds to MIT's {\tentex\char'37}
+  and ASCII~\.{US} */
+ at d dot_dot_dot 016 /* `\.{...}'\,; corresponds to MIT's {\tentex\char'16}
+  and ASCII~\.{SO} */
+ at d colon_colon 06 /* `\.{::}'\,; corresponds to MIT's {\tentex\char'6}
+  and ASCII~\.{ACK} */
+ at d period_ast 026 /* `\.{.*}'\,; corresponds to MIT's {\tentex\char'26}
+  and ASCII~\.{SYN} */
+ at d minus_gt_ast 027 /* `\.{->*}'\,; corresponds to MIT's {\tentex\char'27}
+  and ASCII~\.{ETB} */
 @#
 @d compress(c) if (loc++<=limit) return c
 
@@ -82,12 +96,12 @@
 extern char *id_loc; /* just after the current identifier in the buffer */
 
 @ Code related to input routines:
- at d xisalpha(c) (isalpha((int)(c))&&((eight_bits)(c)<0200))
- at d xisdigit(c) (isdigit((int)(c))&&((eight_bits)(c)<0200))
- at d xisspace(c) (isspace((int)(c))&&((eight_bits)(c)<0200))
- at d xislower(c) (islower((int)(c))&&((eight_bits)(c)<0200))
- at d xisupper(c) (isupper((int)(c))&&((eight_bits)(c)<0200))
- at d xisxdigit(c) (isxdigit((int)(c))&&((eight_bits)(c)<0200))
+ at d xisalpha(c) (isalpha((int)(c))&&!ishigh(c))
+ at d xisdigit(c) (isdigit((int)(c))&&!ishigh(c))
+ at d xisspace(c) (isspace((int)(c))&&!ishigh(c))
+ at d xislower(c) (islower((int)(c))&&!ishigh(c))
+ at d xisupper(c) (isupper((int)(c))&&!ishigh(c))
+ at d xisxdigit(c) (isxdigit((int)(c))&&!ishigh(c))
 @d isxalpha(c) ((c)=='_' || (c)=='$')
   /* non-alpha characters allowed in identifier */
 @d ishigh(c) ((eight_bits)(c)>0177)
@@ -120,12 +134,12 @@
 extern int line[]; /* number of current line in the stacked files */
 extern int change_line; /* number of current line in change file */
 extern int change_depth; /* where \.{@@y} originated during a change */
-extern boolean input_has_ended; /* if there is no more input */
-extern boolean changing; /* if the current line is from |change_file| */
-extern boolean web_file_open; /* if the web file is being read */
+extern bool input_has_ended; /* if there is no more input */
+extern bool changing; /* if the current line is from |change_file| */
+extern bool web_file_open; /* if the web file is being read */
 
 @ @<Predecl...@>=
-extern boolean get_line(void); /* inputs the next line */
+extern bool get_line(void); /* inputs the next line */
 extern void check_complete(void); /* checks that all changes were picked up */
 extern void reset_input(void); /* initialize to read the web file and change file */
 
@@ -132,9 +146,9 @@
 @ Code related to section numbers:
 @<Common code...@>=
 extern sixteen_bits section_count; /* the current section number */
-extern boolean changed_section[]; /* is the section changed? */
-extern boolean change_pending; /* is a decision about change still unclear? */
-extern boolean print_where; /* tells \.{CTANGLE} to print line and file info */
+extern bool changed_section[]; /* is the section changed? */
+extern bool change_pending; /* is a decision about change still unclear? */
+extern bool print_where; /* tells \.{CTANGLE} to print line and file info */
 
 @ Code related to identifier and section name storage:
 @d length(c) (size_t)((c+1)->byte_start-(c)->byte_start) /* the length of a name */
@@ -171,12 +185,12 @@
 @ @<Predecl...@>=
 extern name_pointer id_lookup(const char *,const char *,eight_bits);
    /* looks up a string in the identifier table */
-extern name_pointer section_lookup(char *,char *,boolean); /* finds section name */
+extern name_pointer section_lookup(char *,char *,bool); /* finds section name */
 extern void print_prefix_name(name_pointer);@/
 extern void print_section_name(name_pointer);@/
 extern void sprint_section_name(char *,name_pointer);
 @#
-extern boolean names_match(name_pointer,const char *,size_t,eight_bits);
+extern bool names_match(name_pointer,const char *,size_t,eight_bits);
 /* two routines defined in \.{ctangle.w} and \.{cweave.w} */
 extern void init_node(name_pointer);
 
@@ -215,7 +229,7 @@
 extern char tex_file_name[]; /* name of |tex_file| */
 extern char idx_file_name[]; /* name of |idx_file| */
 extern char scn_file_name[]; /* name of |scn_file| */
-extern boolean flags[]; /* an option for each 7-bit code */
+extern bool flags[]; /* an option for each 7-bit code */
 
 @ Code related to output:
 @d update_terminal() fflush(stdout) /* empty the terminal output buffer */

Modified: branches/stable/source/src/texk/web2c/cwebdir/common.w
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/common.w	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/common.w	2025-05-17 22:44:20 UTC (rev 964)
@@ -77,7 +77,7 @@
 |program|.
 
 @<Global var...@>=
-boolean program; /* \.{CWEAVE} or \.{CTANGLE}? */
+bool program; /* \.{CWEAVE} or \.{CTANGLE}? */
 
 @ \.{CWEAVE} operates in three phases: First it inputs the source
 file and stores cross-reference data, then it inputs the source once again and
@@ -154,7 +154,7 @@
 @^system dependencies@>
 
 @c
-static boolean input_ln( /* copies a line into |buffer| or returns |false| */
+static bool input_ln( /* copies a line into |buffer| or returns |false| */
 FILE *fp) /* what file to read from */
 {
   int c=EOF; /* character read; initialized so some compilers won't complain */
@@ -173,7 +173,7 @@
   return true;
 }
 
-@ @<Predecl...@>=@+static boolean input_ln(FILE *);
+@ @<Predecl...@>=@+static bool input_ln(FILE *);
 
 @* File handling. Now comes the problem of deciding which file to read from
 next.  Recall that the actual text that \.{CWEB} should process comes from two
@@ -198,9 +198,9 @@
 int line[max_include_depth]; /* number of current line in the stacked files */
 int change_line; /* number of current line in change file */
 int change_depth; /* where \.{@@y} originated during a change */
-boolean input_has_ended; /* if there is no more input */
-boolean changing; /* if the current line is from |change_file| */
-boolean web_file_open=false; /* if the web file is being read */
+bool input_has_ended; /* if there is no more input */
+bool changing; /* if the current line is from |change_file| */
+bool web_file_open=false; /* if the web file is being read */
 
 @ When |changing==false|, the next line of |change_file| is kept in
 |change_buffer|, for purposes of comparison with the next
@@ -360,7 +360,7 @@
 information in the \CEE/ file by means of the |print_where| flag.
 
 @c
-boolean get_line(void) /* inputs the next line */
+bool get_line(void) /* inputs the next line */
 {
   restart:
   if (changing && include_depth==change_depth)
@@ -544,10 +544,10 @@
 
 @ @<Global var...@>=
 sixteen_bits section_count; /* the current section number */
-boolean changed_section[max_sections]; /* is the section changed? */
-boolean change_pending; /* if the current change is not yet recorded in
+bool changed_section[max_sections]; /* is the section changed? */
+bool change_pending; /* if the current change is not yet recorded in
   |changed_section[section_count]| */
-boolean print_where=false; /* should \.{CTANGLE} print line and file info? */
+bool print_where=false; /* should \.{CTANGLE} print line and file info? */
 
 @* Storage of names and strings.
 Both \.{CWEAVE} and \.{CTANGLE} store identifiers, section names and
@@ -759,8 +759,8 @@
 
 @<Predecl...@>=
 static int web_strcmp(char *,size_t,char *,size_t);@/
-static name_pointer add_section_name(name_pointer,int,char *,char *,boolean);@/
-static void extend_section_name(name_pointer,char *,char *,boolean);
+static name_pointer add_section_name(name_pointer,int,char *,char *,bool);@/
+static void extend_section_name(name_pointer,char *,char *,bool);
 
 @ @c
 static int web_strcmp( /* fuller comparison than |strcmp| */
@@ -798,7 +798,7 @@
 int c, /* right or left? */
 char *first, /* first character of section name */
 char *last, /* last character of section name, plus one */
-boolean ispref) /* are we adding a prefix or a full name? */
+bool ispref) /* are we adding a prefix or a full name? */
 {
   name_pointer p=name_ptr; /* new node */
   char *s=first_chunk(p);
@@ -825,7 +825,7 @@
 name_pointer p, /* name to be extended */
 char *first, /* beginning of extension text */
 char *last, /* one beyond end of extension text */
-boolean ispref) /* are we adding a prefix or a full name? */
+bool ispref) /* are we adding a prefix or a full name? */
 {
   char *s;
   name_pointer q=p+1;
@@ -851,7 +851,7 @@
 name_pointer
 section_lookup( /* find or install section name in tree */
 char *first,char *last, /* first and last characters of new name */
-boolean ispref) /* is the new name a prefix or a full name? */
+bool ispref) /* is the new name a prefix or a full name? */
 {
   int c=less; /* comparison between two names; initialized so some compilers won't complain */
   name_pointer p=root; /* current node of the search tree */
@@ -962,7 +962,7 @@
   name_pointer q=r+1; /* access to subsequent chunks */
   char *ss, *s=first_chunk(r);
   int c=less; /* comparison */
-  boolean ispref; /* is chunk |r| a prefix? */
+  bool ispref; /* is chunk |r| a prefix? */
   while (true) {
     ss=(r+1)->byte_start-1;
     if (*ss==' ' && ss>=r->byte_start) ispref=true,q=q->link;
@@ -1128,7 +1128,7 @@
 char tex_file_name[max_file_name_length]; /* name of |tex_file| */
 char idx_file_name[max_file_name_length]; /* name of |idx_file| */
 char scn_file_name[max_file_name_length]; /* name of |scn_file| */
-boolean flags[128]; /* an option for each 7-bit code */
+bool flags[128]; /* an option for each 7-bit code */
 
 @ The |flags| will be initially |false|. Some of them are set to~|true| before
 scanning the arguments; if additional flags are |true| by default they
@@ -1159,7 +1159,7 @@
   char *dot_pos; /* position of |'.'| in the argument */
   char *name_pos; /* file name beginning, sans directory */
   char *s; /* pointer for scanning strings */
-  boolean found_web=false,found_change=false,found_out=false;
+  bool found_web=false,found_change=false,found_out=false;
              /* have these names been seen? */
 
   strcpy(change_file_name,"/dev/null");

Modified: branches/stable/source/src/texk/web2c/cwebdir/ctang-w2c.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/ctang-w2c.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/ctang-w2c.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -193,9 +193,8 @@
 @z
 
 @x [6.59] l.708
-    if ((eight_bits)(*j)<0200) C_putc(*j);
+    if (ishigh(*j)) C_printf("%s",translit[(eight_bits)(*j)-0200]);
 @^high-bit character handling@>
-    else C_printf("%s",translit[(eight_bits)(*j)-0200]);
 @y
     if (ishigh(*j)) {
 @^high-bit character handling@>
@@ -206,7 +205,6 @@
       }
       C_printf("%s",translit[(eight_bits)(*j)-0200]);
     }
-    else C_putc(*j);
 @z
 
 @x [7.67] l.840
@@ -429,7 +427,7 @@
   rename(check_file_name,C_file_name); /* This was the first run */
 
 @ @<Set up the comparison of temporary output@>=
-  boolean comparison=false;
+  bool comparison=false;
 
   if((check_file=fopen(check_file_name,"r"))==NULL)
     fatal(_("! Cannot open output file "),check_file_name);
@@ -520,7 +518,7 @@
 @ No copying necessary, just remove the temporary output file.
 
 @<Redirect temporary output to \.{/dev/null}@>={
-  boolean comparison=true;
+  bool comparison=true;
   @<Create the secondary output...@>@;
 }
 
@@ -527,7 +525,7 @@
 @ @<Setup system redirection@>=
 char in_buf[BUFSIZ+1];
 int in_size;
-boolean comparison=true;
+bool comparison=true;
 if((check_file=fopen(check_file_name,"r"))==NULL)
   fatal(_("! Cannot open output file "),check_file_name);
 @.Cannot open output file@>

Modified: branches/stable/source/src/texk/web2c/cwebdir/ctang-w32.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/ctang-w32.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/ctang-w32.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -10,13 +10,13 @@
 @z
 
 @x section 24
-boolean names_match(
+bool names_match(
 name_pointer p, /* points to the proposed match */
 const char *first, /* position of first character of string */
 size_t l, /* length of identifier */
 eight_bits t) /* not used by \.{CTANGLE} */
 @y
-boolean __cdecl names_match(
+bool __cdecl names_match(
 name_pointer p, /* points to the proposed match */
 const char *first, /* position of first character of string */
 size_t l, /* length of identifier */

Modified: branches/stable/source/src/texk/web2c/cwebdir/ctangle.c
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/ctangle.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/ctangle.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -2,7 +2,7 @@
 #line 66 "ctangle.w"
 
 /*5:*/
-#line 48 "common.h"
+#line 47 "common.h"
 
 #include <ctype.h>  
 #include <stdbool.h>  
@@ -15,11 +15,9 @@
 /*:5*/
 #line 67 "ctangle.w"
 
-#define banner "This is CTANGLE (Version 4.12.1)" \
-
+#define banner "This is CTANGLE (Version 4.12.1)"
 #define ctangle false
-#define cweave true \
-
+#define cweave true
 #define and_and 04
 #define lt_lt 020
 #define gt_gt 021
@@ -34,38 +32,29 @@
 #define dot_dot_dot 016
 #define colon_colon 06
 #define period_ast 026
-#define minus_gt_ast 027 \
-
-#define compress(c) if(loc++<=limit) return c \
-
-#define xisalpha(c) (isalpha((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisdigit(c) (isdigit((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisspace(c) (isspace((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xislower(c) (islower((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisupper(c) (isupper((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define xisxdigit(c) (isxdigit((int) (c) ) &&((eight_bits) (c) <0200) ) 
-#define isxalpha(c) ((c) =='_'||(c) =='$')  \
-
-#define ishigh(c) ((eight_bits) (c) > 0177)  \
- \
-
-#define max_include_depth 10 \
-
+#define minus_gt_ast 027
+#define compress(c) if(loc++<=limit) return c
+#define xisalpha(c) (isalpha((int) (c) ) &&!ishigh(c) )
+#define xisdigit(c) (isdigit((int) (c) ) &&!ishigh(c) )
+#define xisspace(c) (isspace((int) (c) ) &&!ishigh(c) )
+#define xislower(c) (islower((int) (c) ) &&!ishigh(c) )
+#define xisupper(c) (isupper((int) (c) ) &&!ishigh(c) )
+#define xisxdigit(c) (isxdigit((int) (c) ) &&!ishigh(c) )
+#define isxalpha(c) ((c) =='_'||(c) =='$')
+#define ishigh(c) ((eight_bits) (c) > 0177)
+#define max_include_depth 10
 #define max_file_name_length 60
 #define cur_file file[include_depth]
 #define cur_file_name file_name[include_depth]
 #define cur_line line[include_depth]
 #define web_file file[0]
-#define web_file_name file_name[0] \
-
-#define length(c) (size_t) ((c+1) ->byte_start-(c) ->byte_start) 
-#define print_id(c) term_write((c) ->byte_start,length(c) ) 
+#define web_file_name file_name[0]
+#define length(c) (size_t) ((c+1) ->byte_start-(c) ->byte_start)
+#define print_id(c) term_write((c) ->byte_start,length(c) )
 #define llink link
 #define rlink dummy.Rlink
-#define root name_dir->rlink \
-
-#define ilk dummy.Ilk \
-
+#define root name_dir->rlink
+#define ilk dummy.Ilk
 #define spotless 0
 #define harmless_message 1
 #define error_message 2
@@ -72,67 +61,48 @@
 #define fatal_message 3
 #define mark_harmless() if(history==spotless) history= harmless_message
 #define mark_error() history= error_message
-#define confusion(s) fatal("! This can't happen: ",s)  \
- \
-
+#define confusion(s) fatal("! This can't happen: ",s)
 #define show_banner flags['b']
 #define show_progress flags['p']
 #define show_happiness flags['h']
 #define show_stats flags['s']
-#define make_xrefs flags['x'] \
-
-#define update_terminal() fflush(stdout) 
-#define new_line() putchar('\n') 
-#define term_write(a,b) fflush(stdout) ,fwrite(a,sizeof(char) ,b,stdout)  \
-
+#define make_xrefs flags['x']
+#define update_terminal() fflush(stdout)
+#define new_line() putchar('\n')
+#define term_write(a,b) fflush(stdout) ,fwrite(a,sizeof(char) ,b,stdout)
 #define buf_size 200
-#define longest_name 10000 \
-
-#define long_buf_size (buf_size+longest_name) 
-#define max_bytes 100000 \
-
-#define max_names 5000 \
-
-#define max_sections 2000 \
-
+#define longest_name 10000
+#define long_buf_size (buf_size+longest_name)
+#define max_bytes 100000
+#define max_names 5000
+#define max_sections 2000
 #define max_texts 4000
 #define max_toks 270000
-#define equiv equiv_or_xref \
-
+#define equiv equiv_or_xref
 #define macro 0
-#define section_flag max_texts \
-
+#define section_flag max_texts
 #define string 02
 #define constant 03
 #define join 0177
-#define output_defs_flag (2*024000-1)  \
-
+#define output_defs_flag (2*024000-1)
 #define stack_size 50
-#define cur_state stack[stack_size+1] \
-
+#define cur_state stack[stack_size+1]
 #define cur_byte cur_state.byte_field
 #define cur_name cur_state.name_field
 #define cur_repl cur_state.repl_field
 #define cur_section cur_state.section_field
-#define cur_end (cur_repl+1) ->tok_start \
-
+#define cur_end (cur_repl+1) ->tok_start
 #define section_number 0201
-#define identifier 0202 \
-
+#define identifier 0202
 #define normal 0
 #define num_or_id 1
 #define post_slash 2
 #define unbreakable 3
-#define verbatim 4 \
-
+#define verbatim 4
 #define max_files 256
-#define macro_end (cur_text+1) ->tok_start \
-
-#define C_printf(c,a) fprintf(C_file,c,a) 
-#define C_putc(c) fputc((int) (c) ,C_file)  \
-
-#define translit_length 10 \
-
+#define C_printf(c,a) fprintf(C_file,c,a)
+#define C_putc(c) fputc((int) (c) ,C_file)
+#define translit_length 10
 #define ignore 00
 #define ord 0302
 #define control_text 0303
@@ -142,33 +112,28 @@
 #define definition 0307
 #define begin_C 0310
 #define section_name 0311
-#define new_section 0312 \
-
+#define new_section 0312
 #define app_repl(c) { \
 if(tok_ptr==tok_mem_end) overflow("token") ; \
 else*(tok_ptr++) = (eight_bits) c; \
-} \
-
+}
 #define store_id(a) a= id_lookup(id_first,id_loc,'\0') -name_dir; \
 app_repl((a/0400) +0200) ; \
-app_repl(a%0400)  \
+app_repl(a%0400)
+#define keep_digit_separators flags['k']
 
-#define keep_digit_separators flags['k'] \
-
-
 #line 68 "ctangle.w"
 
 /*3:*/
 #line 35 "common.h"
 
-typedef bool boolean;
 typedef uint8_t eight_bits;
 typedef uint16_t sixteen_bits;
-extern boolean program;
+extern bool program;
 extern int phase;
 
 /*:3*//*6:*/
-#line 78 "common.h"
+#line 92 "common.h"
 
 extern char section_text[];
 extern char*section_text_end;
@@ -176,7 +141,7 @@
 extern char*id_loc;
 
 /*:6*//*7:*/
-#line 96 "common.h"
+#line 110 "common.h"
 
 extern char buffer[];
 extern char*buffer_end;
@@ -184,7 +149,7 @@
 extern char*limit;
 
 /*:7*//*8:*/
-#line 113 "common.h"
+#line 127 "common.h"
 
 extern int include_depth;
 extern FILE*file[];
@@ -195,20 +160,20 @@
 extern int line[];
 extern int change_line;
 extern int change_depth;
-extern boolean input_has_ended;
-extern boolean changing;
-extern boolean web_file_open;
+extern bool input_has_ended;
+extern bool changing;
+extern bool web_file_open;
 
 /*:8*//*10:*/
-#line 133 "common.h"
+#line 147 "common.h"
 
 extern sixteen_bits section_count;
-extern boolean changed_section[];
-extern boolean change_pending;
-extern boolean print_where;
+extern bool changed_section[];
+extern bool change_pending;
+extern bool print_where;
 
 /*:10*//*11:*/
-#line 148 "common.h"
+#line 162 "common.h"
 
 typedef struct name_info{
 char*byte_start;
@@ -233,12 +198,12 @@
 extern hash_pointer hash_ptr;
 
 /*:11*//*13:*/
-#line 193 "common.h"
+#line 207 "common.h"
 
 extern int history;
 
 /*:13*//*15:*/
-#line 211 "common.h"
+#line 225 "common.h"
 
 extern int argc;
 extern char**argv;
@@ -246,10 +211,10 @@
 extern char tex_file_name[];
 extern char idx_file_name[];
 extern char scn_file_name[];
-extern boolean flags[];
+extern bool flags[];
 
 /*:15*//*16:*/
-#line 225 "common.h"
+#line 239 "common.h"
 
 extern FILE*C_file;
 extern FILE*tex_file;
@@ -314,7 +279,7 @@
 #line 457 "ctangle.w"
 
 static eight_bits out_state;
-static boolean protect;
+static bool protect;
 
 /*:42*//*45:*/
 #line 488 "ctangle.w"
@@ -327,7 +292,7 @@
 /*:45*//*53:*/
 #line 584 "ctangle.w"
 
-static boolean output_defs_seen= false;
+static bool output_defs_seen= false;
 
 /*:53*//*57:*/
 #line 694 "ctangle.w"
@@ -342,13 +307,13 @@
 /*:62*//*66:*/
 #line 827 "ctangle.w"
 
-static boolean comment_continues= false;
+static bool comment_continues= false;
 
 /*:66*//*68:*/
 #line 864 "ctangle.w"
 
 static name_pointer cur_section_name;
-static boolean no_where;
+static bool no_where;
 
 /*:68*//*82:*/
 #line 1182 "ctangle.w"
@@ -360,33 +325,33 @@
 #line 71 "ctangle.w"
 
 /*4:*/
-#line 43 "common.h"
+#line 42 "common.h"
 
 extern void common_init(void);
 
 /*:4*//*9:*/
-#line 127 "common.h"
+#line 141 "common.h"
 
-extern boolean get_line(void);
+extern bool get_line(void);
 extern void check_complete(void);
 extern void reset_input(void);
 
 /*:9*//*12:*/
-#line 171 "common.h"
+#line 185 "common.h"
 
 extern name_pointer id_lookup(const char*,const char*,eight_bits);
 
-extern name_pointer section_lookup(char*,char*,boolean);
+extern name_pointer section_lookup(char*,char*,bool);
 extern void print_prefix_name(name_pointer);
 extern void print_section_name(name_pointer);
 extern void sprint_section_name(char*,name_pointer);
 
-extern boolean names_match(name_pointer,const char*,size_t,eight_bits);
+extern bool names_match(name_pointer,const char*,size_t,eight_bits);
 
 extern void init_node(name_pointer);
 
 /*:12*//*14:*/
-#line 196 "common.h"
+#line 210 "common.h"
 
 extern int wrap_up(void);
 extern void err_print(const char*);
@@ -403,7 +368,7 @@
 #line 347 "ctangle.w"
 
 static void push_level(name_pointer);
-static void pop_level(boolean);
+static void pop_level(bool);
 static void get_output(void);
 
 /*:37*//*44:*/
@@ -421,7 +386,7 @@
 #line 807 "ctangle.w"
 
 static eight_bits skip_ahead(void);
-static boolean skip_comment(boolean);
+static bool skip_comment(bool);
 
 /*:65*//*70:*/
 #line 915 "ctangle.w"
@@ -519,7 +484,7 @@
 /*:2*//*24:*/
 #line 155 "ctangle.w"
 
-boolean names_match(
+bool names_match(
 name_pointer p,
 const char*first,
 size_t l,
@@ -572,7 +537,7 @@
 
 static void
 pop_level(
-boolean flag)
+bool flag)
 {
 if(flag&&cur_repl->text_link<section_flag){
 cur_repl= cur_repl->text_link+text_info;
@@ -742,22 +707,24 @@
 }
 
 /*:48*//*54:*/
-#line 592 "ctangle.w"
+#line 590 "ctangle.w"
 
 static void
 output_defs(void)
 {
-sixteen_bits a;
+sixteen_bits a;eight_bits*macro_end;
 push_level(NULL);
 for(cur_text= text_info+1;cur_text<text_ptr;cur_text++)
 if(cur_text->text_link==macro){
 cur_byte= cur_text->tok_start;
+macro_end= (cur_text+1)->tok_start;
 C_printf("%s","#define ");
 out_state= normal;
 protect= true;
-while(cur_byte<macro_end){
+do macro_end--;while(isspace(*macro_end)&&plus_plus!=*macro_end);
+
+while(cur_byte<=macro_end){
 a= *cur_byte++;
-if(cur_byte==macro_end&&a=='\n')break;
 if(out_state==verbatim&&a!=string&&a!=constant&&a!='\n')
 C_putc(a);
 
@@ -801,9 +768,9 @@
 if(out_state==num_or_id)C_putc(' ');
 for(j= (cur_val+name_dir)->byte_start;
 j<(cur_val+name_dir+1)->byte_start;j++)
-if((eight_bits)(*j)<0200)C_putc(*j);
+if(ishigh(*j))C_printf("%s",translit[(eight_bits)(*j)-0200]);
 
-else C_printf("%s",translit[(eight_bits)(*j)-0200]);
+else C_putc(*j);
 out_state= num_or_id;break;
 
 /*:59*/
@@ -900,8 +867,8 @@
 /*:64*//*67:*/
 #line 830 "ctangle.w"
 
-static boolean skip_comment(
-boolean is_long_comment)
+static bool skip_comment(
+bool is_long_comment)
 {
 char c;
 while(true){
@@ -937,7 +904,7 @@
 static eight_bits
 get_next(void)
 {
-static boolean preprocessing= false;
+static bool preprocessing= false;
 eight_bits c;
 while(true){
 if(loc> limit){
@@ -978,7 +945,7 @@
 if(xisdigit(c)||c=='.')/*73:*/
 #line 956 "ctangle.w"
 {
-boolean hex_flag= false;
+bool hex_flag= false;
 id_first= loc-1;
 if(*id_first=='.'&&!xisdigit(*loc))goto mistake;
 if(*id_first=='0'){

Modified: branches/stable/source/src/texk/web2c/cwebdir/ctangle.w
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/ctangle.w	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/ctangle.w	2025-05-17 22:44:20 UTC (rev 964)
@@ -153,7 +153,7 @@
 starting at position |first| equals the identifier pointed to by |p|:
 
 @c
-boolean names_match(
+bool names_match(
 name_pointer p, /* points to the proposed match */
 const char *first, /* position of first character of string */
 size_t l, /* length of identifier */
@@ -334,7 +334,7 @@
 @c
 static void
 pop_level( /* do this when |cur_byte| reaches |cur_end| */
-boolean flag) /* |flag==false| means we are in |output_defs| */
+bool flag) /* |flag==false| means we are in |output_defs| */
 {
   if (flag && cur_repl->text_link<section_flag) { /* link to a continuation */
     cur_repl=cur_repl->text_link+text_info; /* stay on the same level */
@@ -346,7 +346,7 @@
 
 @ @<Predecl...@>=
 static void push_level(name_pointer);@/
-static void pop_level(boolean);@/
+static void pop_level(bool);@/
 static void get_output(void);
 
 @ The heart of the output procedure is the function |get_output|,
@@ -456,7 +456,7 @@
 
 @<Private...@>=
 static eight_bits out_state; /* current status of partial output */
-static boolean protect; /* should newline characters be quoted? */
+static bool protect; /* should newline characters be quoted? */
 
 @ Here is a routine that is invoked when we want to output the current line.
 During the output process, |cur_line| equals the number of the next line
@@ -582,11 +582,9 @@
     output_defs();
 
 @ @<Private...@>=
-static boolean output_defs_seen=false;
+static bool output_defs_seen=false;
 
-@ @d macro_end (cur_text+1)->tok_start /* end of |macro| replacement text */
-@#
- at d C_printf(c,a) fprintf(C_file,c,a)
+@ @d C_printf(c,a) fprintf(C_file,c,a)
 @d C_putc(c) fputc((int)(c),C_file) /* isn't \CEE/ wonderfully consistent? */
 
 @c
@@ -593,17 +591,19 @@
 static void
 output_defs(void)
 {
-  sixteen_bits a;
+  sixteen_bits a; eight_bits *macro_end;
   push_level(NULL);
   for (cur_text=text_info+1; cur_text<text_ptr; cur_text++)
     if (cur_text->text_link==macro) { /* |cur_text| is the text for a |macro| */
       cur_byte=cur_text->tok_start;
+      macro_end=(cur_text+1)->tok_start; /* end of |macro| replacement text */
       C_printf("%s","#define ");
       out_state=normal;
       protect=true; /* newlines should be preceded by |'\\'| */
-      while (cur_byte<macro_end) {
+      do macro_end--; while (isspace(*macro_end)&&plus_plus!=*macro_end);
+        /* discard trailing whitespace; |plus_plus=='\v'| */
+      while (cur_byte<=macro_end) {
         a=*cur_byte++;
-        if (cur_byte==macro_end && a=='\n') break; /* disregard a final newline */
         if (out_state==verbatim && a!=string && a!=constant && a!='\n')
           C_putc(a); /* a high-bit character can occur in a string */
 @^high-bit character handling@>
@@ -705,9 +705,9 @@
   if (out_state==num_or_id) C_putc(' ');
   for (j=(cur_val+name_dir)->byte_start;
        j<(cur_val+name_dir+1)->byte_start; j++)
-    if ((eight_bits)(*j)<0200) C_putc(*j);
+    if (ishigh(*j)) C_printf("%s",translit[(eight_bits)(*j)-0200]);
 @^high-bit character handling@>
-    else C_printf("%s",translit[(eight_bits)(*j)-0200]);
+    else C_putc(*j);
   out_state=num_or_id; break;
 
 @ @<Case of a sec...@>=@t\1\quad@>
@@ -806,7 +806,7 @@
 
 @ @<Predecl...@>=
 static eight_bits skip_ahead(void);@/
-static boolean skip_comment(boolean);
+static bool skip_comment(bool);
 
 @ The |skip_comment| procedure reads through the input at somewhat high
 speed in order to pass over comments, which \.{CTANGLE} does not transmit
@@ -825,11 +825,11 @@
 No comment, long or short, is allowed to contain `\.{@@\ }' or `\.{@@*}'.
 
 @<Private...@>=
-static boolean comment_continues=false; /* are we scanning a comment? */
+static bool comment_continues=false; /* are we scanning a comment? */
 
 @ @c
-static boolean skip_comment( /* skips over comments */
-boolean is_long_comment)
+static bool skip_comment( /* skips over comments */
+bool is_long_comment)
 {
   char c; /* current character */
   while (true) {
@@ -863,7 +863,7 @@
 
 @<Private...@>=
 static name_pointer cur_section_name; /* name of section just scanned */
-static boolean no_where; /* suppress |print_where|? */
+static bool no_where; /* suppress |print_where|? */
 
 @ As one might expect, |get_next| consists mostly of a big switch
 that branches to the various special cases that can arise.
@@ -872,7 +872,7 @@
 static eight_bits
 get_next(void) /* produces the next input token */
 {
-  static boolean preprocessing=false;
+  static bool preprocessing=false;
   eight_bits c; /* the current character */
   while (true) {
     if (loc>limit) {
@@ -954,7 +954,7 @@
 }
 
 @ @<Get a constant@>= {
-  boolean hex_flag = false; /* are we reading a hexadecimal literal? */
+  bool hex_flag = false; /* are we reading a hexadecimal literal? */
   id_first=loc-1;
   if (*id_first=='.' && !xisdigit(*loc)) goto mistake; /* not a constant */
   if (*id_first=='0') {

Modified: branches/stable/source/src/texk/web2c/cwebdir/ctwill-hint.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/ctwill-hint.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/ctwill-hint.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -662,10 +662,10 @@
 
 @x
 finish_C( /* finishes a definition or a \CEE/ part */
-  boolean visible) /* |true| if we should produce \TeX\ output */
+  bool visible) /* |true| if we should produce \TeX\ output */
 @y
 finish_C( /* finishes a definition or a \CEE/ part */
-  boolean visible) /* |true| if we should produce \TeX\ output */
+  bool visible) /* |true| if we should produce \TeX\ output */
 @-finish_C@>
 @$finish_C {CTWILL}234 \&{static} \&{void} (\,)@>
 @z
@@ -673,9 +673,9 @@
 Section 235.
 
 @x
-@ @<Predecl...@>=@+static void finish_C(boolean);
+@ @<Predecl...@>=@+static void finish_C(bool);
 @y
-@ @<Predecl...@>=@+static void finish_C(boolean);
+@ @<Predecl...@>=@+static void finish_C(bool);
 @-finish_C@>
 @z
 
@@ -877,9 +877,9 @@
 Section 282.
 
 @x
-@ @<Predec...@>=@+static boolean app_supp(text_pointer);
+@ @<Predec...@>=@+static bool app_supp(text_pointer);
 @y
-@ @<Predec...@>=@+static boolean app_supp(text_pointer);
+@ @<Predec...@>=@+static bool app_supp(text_pointer);
 @-app_supp@>
 @z
 

Modified: branches/stable/source/src/texk/web2c/cwebdir/ctwill-mini.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/ctwill-mini.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/ctwill-mini.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -88,12 +88,6 @@
 Section 5.
 
 @x
-For backward compatibility with pre-{\mc ANSI} compilers, we replace the
- at y
-And we replace the
- at z
-
- at x
 @d _(s) gettext(s)
 @y
 @d _(s) gettext(s)
@@ -1657,9 +1651,12 @@
 Section 215.
 
 @x
-@<Append a \9{s}string or...@>={@+ int count=-1; /* characters remaining before string break */
+  if (count==0) { /* insert a discretionary break in a long string */
+     app_str(@q(@>@q{@>"}\\)\\.{"@q}@>); count=20;
 @y
-@<Append a \9{s}string or...@>={@+ int count=-1; /* characters remaining before string break */
+  if (count==0) {
+     count=20; @/ /* insert a discretionary break in a long string */
+     app_str(@q(@>@q{@>"}\\)\\.{"@q}@>);
 @z
 
 Section 220.
@@ -1903,14 +1900,22 @@
 @ @<Translate the \9{c}current section@>= @+ {
 @z
 
+Section 249.
+
+ at x
+    case section_name: loc-=2; next_control=get_next(); /* reprocess */
+ at y
+    case section_name: @/ loc-=2; @/ next_control=get_next(); /* reprocess */
+ at z
+
 Section 251.
 
 @x
 finish_C( /* finishes a definition or a \CEE/ part */
-  boolean visible) /* |true| if we should produce \TeX\ output */
+  bool visible) /* |true| if we should produce \TeX\ output */
 @y
 finish_C( /* finishes a definition or a \CEE/ part */
-  boolean visible) /* |true| if we should produce \TeX\ output */
+  bool visible) /* |true| if we should produce \TeX\ output */
 @-finish_C@>
 @$finish_C {CTWILL}251 \&{static} \&{void} (\,)@>
 @z
@@ -1918,9 +1923,9 @@
 Section 252.
 
 @x
-@ @<Predecl...@>=@+static void finish_C(boolean);
+@ @<Predecl...@>=@+static void finish_C(bool);
 @y
-@ @<Predecl...@>=@+static void finish_C(boolean);
+@ @<Predecl...@>=@+static void finish_C(bool);
 @-finish_C@>
 @z
 
@@ -2218,9 +2223,9 @@
 Section 300.
 
 @x
-@ @<Predec...@>=@+static boolean app_supp(text_pointer);
+@ @<Predec...@>=@+static bool app_supp(text_pointer);
 @y
-@ @<Predec...@>=@+static boolean app_supp(text_pointer);
+@ @<Predec...@>=@+static bool app_supp(text_pointer);
 @-app_supp@>
 @z
 

Modified: branches/stable/source/src/texk/web2c/cwebdir/ctwill-w2c.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/ctwill-w2c.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/ctwill-w2c.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -127,7 +127,7 @@
 turned on during the first phase.
 
 @<Private...@>=
-static boolean change_exists; /* has any section changed? */
+static bool change_exists; /* has any section changed? */
 @y
 turned on during the first phase---NOT!
 @z
@@ -950,14 +950,14 @@
 @z
 
 @x [12.229] l.4212
-static boolean group_found=false; /* has a starred section occurred? */
+static bool group_found=false; /* has a starred section occurred? */
 
 @ @<Translate the \9{c}current section@>= {
   section_count++;
 @y
-static boolean group_found=false; /* has a starred section occurred? */
-static boolean right_start_switch; /* has `\.{@@r}' occurred recently? */
-static boolean temp_switch; /* has `\.{@@\%}' occurred recently? */
+static bool group_found=false; /* has a starred section occurred? */
+static bool right_start_switch; /* has `\.{@@r}' occurred recently? */
+static bool temp_switch; /* has `\.{@@\%}' occurred recently? */
 
 @ @d usage_sentinel (struct perm_meaning *)1
 @<Translate the \9{c}current section@>= {
@@ -1016,18 +1016,24 @@
 @z
 
 @x [12.232] l.4268
-        err_print("! TeX string should be in C text only"); break;
+        err_print("! TeX string should be in C text only");
 @y
-        err_print(_("! TeX string should be in C text only")); break;
+        err_print(_("! TeX string should be in C text only"));
 @z
 
- at x [12.232] l.4274
+ at x [12.232] l.4271
+        err_print("! Verbatim string should be in C text only"); break;
+ at y
+        err_print(_("! Verbatim string should be in C text only")); break;
+ at z
+
+ at x [12.232] l.4277
         err_print("! You can't do that in TeX text"); break;
 @y
         err_print(_("! You can't do that in TeX text")); break;
 @z
 
- at x [12.233] l.4288
+ at x [12.233] l.4291
   outer_parse(); finish_C(format_visible); format_visible=true;
   doing_format=false;
 }
@@ -1039,7 +1045,7 @@
 }
 @z
 
- at x [12.236] l.4340
+ at x [12.236] l.4343
 @<Start \9{a}a macro...@>= {
 @y
 @<Start \9{a}a macro...@>= {
@@ -1046,13 +1052,13 @@
   is_macro=true;
 @z
 
- at x [12.236] l.4346
+ at x [12.236] l.4349
     err_print("! Improper macro definition");
 @y
     err_print(_("! Improper macro definition"));
 @z
 
- at x [12.236] l.4347
+ at x [12.236] l.4350
 @.Improper macro definition@>
   else {
     app('$'); app_cur_id(false);
@@ -1064,7 +1070,7 @@
     def_diff=(*loc!='(');
 @z
 
- at x [12.236] l.4359
+ at x [12.236] l.4362
         } @=/* otherwise fall through */@>@;
       default: err_print("! Improper macro definition"); break;
 @y
@@ -1072,7 +1078,7 @@
       default: err_print(_("! Improper macro definition")); break;
 @z
 
- at x [12.237] l.4369
+ at x [12.237] l.4372
 @ @<Start \9{a}a format...@>= {
   doing_format=true;
 @y
@@ -1081,25 +1087,25 @@
   is_macro=false;
 @z
 
- at x [12.237] l.4386
+ at x [12.237] l.4389
   if (scrap_ptr!=scrap_info+2) err_print("! Improper format definition");
 @y
   if (scrap_ptr!=scrap_info+2) err_print(_("! Improper format definition"));
 @z
 
- at x [12.240] l.4421
+ at x [12.240] l.4424
   err_print("! You need an = sign after the section name");
 @y
   err_print(_("! You need an = sign after the section name"));
 @z
 
- at x [12.241] l.4443
+ at x [12.241] l.4446
   err_print("! You can't do that in C text");
 @y
   err_print(_("! You can't do that in C text"));
 @z
 
- at x [12.246] l.4513
+ at x [12.246] l.4516
 out_str("\\fi"); finish_line();
 @.\\fi@>
 @y
@@ -1110,13 +1116,13 @@
 @.\\FI@>
 @z
 
- at x [13.247] l.4534
+ at x [13.247] l.4537
   if (show_progress) printf("%s","\nWriting the index...");
 @y
   if (show_progress) printf("%s",_("\nWriting the index..."));
 @z
 
- at x [13.247] l.4536
+ at x [13.247] l.4539
   if (change_exists) {
     @<Tell about changed sections@>@;
     finish_line(); flush_buffer(out_buf,false,false);
@@ -1125,19 +1131,19 @@
 @y
 @z
 
- at x [13.247] l.4545
+ at x [13.247] l.4548
     fatal("! Cannot open index file ",idx_file_name);
 @y
     fatal(_("! Cannot open index file "),idx_file_name);
 @z
 
- at x [13.247] l.4557
+ at x [13.247] l.4560
     fatal("! Cannot open section file ",scn_file_name);
 @y
     fatal(_("! Cannot open section file "),scn_file_name);
 @z
 
- at x [13.247] l.4569
+ at x [13.247] l.4572
 fclose(active_file);
 @y
 fclose(active_file); active_file=tex_file=NULL;
@@ -1144,13 +1150,13 @@
 if (check_for_change) @<Update the result when it has changed@>@;
 @z
 
- at x [13.247] l.4572
+ at x [13.247] l.4575
   printf("%s","Done.");
 @y
   printf("%s",_("Done."));
 @z
 
- at x [13.249] l.4580
+ at x [13.249] l.4583
 the index section itself.
 
 @<Tell about changed sections@>=
@@ -1169,13 +1175,13 @@
 the index section itself---NOT!
 @z
 
- at x [13.257] l.4724
+ at x [13.257] l.4727
     if (sort_ptr>=scrap_info_end) overflow("sorting");
 @y
     if (sort_ptr>=scrap_info_end) overflow(_("sorting"));
 @z
 
- at x [13.262] l.4769
+ at x [13.262] l.4772
 @ @<Output the name...@>=
 switch (cur_name->ilk) {@+char *p; /* index into |byte_mem| */@+ at t}\6{\4@>
 @y
@@ -1186,20 +1192,20 @@
 switch (cur_name->ilk) {
 @z
 
- at x [13.262] l.4771
+ at x [13.262] l.4774
   case normal: case func_template:
 @y
   case normal:
 @z
 
- at x [13.262] l.4773
-    else {@+boolean all_caps=true;@+ at t}\6{@>
+ at x [13.262] l.4776
+    else {@+bool all_caps=true;@+ at t}\6{@>
 @y
-    else {@+boolean all_caps=true;@+char *p;
+    else {@+bool all_caps=true;@+char *p;
       /* index into |byte_mem| */ @+ at t}\6{@>
 @z
 
- at x [13.262] l.4788
+ at x [13.262] l.4791
   case roman: not_an_identifier: out_name(cur_name,false); goto name_done;
   case custom:
     out_str("$\\");
@@ -1214,13 +1220,13 @@
 @.\\\$@>
 @z
 
- at x [13.262] l.4798
+ at x [13.262] l.4801
 out_name(cur_name,true);
 @y
 out_name(cur_name,proofing);
 @z
 
- at x [13.269] l.4861
+ at x [13.269] l.4864
   puts("\nMemory usage statistics:");
 @.Memory usage statistics:@>
   printf("%td names (out of %ld)\n",@^system dependencies@>
@@ -1269,7 +1275,7 @@
             (ptrdiff_t)(max_sort_ptr-scrap_info),(long)max_scraps);
 @z
 
- at x [14.270] l.4883
+ at x [14.270] l.4886
 @** Index.
 @y
 @q Section 270. @>
@@ -1480,7 +1486,7 @@
 static char *ministring_buf_end=ministring_buf+max_tex_chars-1;
   /* end of |ministring_buf| */
 static char *ministring_ptr; /* first available slot in |ministring_buf| */
-static boolean ms_mode; /* are we outputting to |ministring_buf|? */
+static bool ms_mode; /* are we outputting to |ministring_buf|? */
 
 @q Section 27->274. @>
 @ @<Set init...@>=
@@ -1578,10 +1584,10 @@
 should set |ident_seen=false| first. (This is admittedly tricky.)
 
 @<Private var...@>=
-static boolean ident_seen;
+static bool ident_seen;
 
 @ @c
-static boolean app_supp(
+static bool app_supp(
   text_pointer p)
 { token_pointer j;
   if (ident_seen && **p>=tok_flag)
@@ -1601,7 +1607,7 @@
 }
 
 @q Section 282. @>
-@ @<Predec...@>=@+static boolean app_supp(text_pointer);
+@ @<Predec...@>=@+static bool app_supp(text_pointer);
 
 @q Section 142->283. @>
 @ The trickiest part of \.{CTWILL} is the procedure |make_ministring(pp+l)|,
@@ -1654,7 +1660,7 @@
   text_pointer q=(p-1)->trans, r;
   token t;
   int ast_count=0; /* asterisks preceding the expression */
-  boolean non_ast_seen=false; /* have we seen a non-asterisk? */
+  bool non_ast_seen=false; /* have we seen a non-asterisk? */
   while (true) {
     if (*(q+1)==*q+1) {
       r=q;@+break; /* e.g., \&{struct}; we're doing production 45 or 46 */
@@ -1693,8 +1699,8 @@
 
 @q Section 253->288. @>
 @ @<Private...@>=
-static boolean is_macro; /* it's a macro def, not a format def */
-static boolean def_diff; /* |false| iff the current macro has parameters */
+static bool is_macro; /* it's a macro def, not a format def */
+static bool def_diff; /* |false| iff the current macro has parameters */
 static name_pointer id_being_defined; /* the definee */
 
 @q Section 257->289. @>
@@ -1826,7 +1832,7 @@
 switch (cur_name->ilk) {@+char *p; /* index into |byte_mem| */@+ at t}\6{\4@>
   case normal: case func_template:
     if (is_tiny(cur_name)) out_str("\\|");
-    else {@+boolean all_caps=true;@+ at t}\6{@>
+    else {@+bool all_caps=true;@+ at t}\6{@>
       for (p=cur_name->byte_start;p<(cur_name+1)->byte_start;p++)
         if (xislower(*p)) { /* not entirely uppercase */
           all_caps=false; break;
@@ -1936,7 +1942,7 @@
 
 @<Update the result...@>= {
 if((tex_file=fopen(tex_file_name,"r"))!=NULL) {
-  boolean comparison=false;
+  bool comparison=false;
 
   if((check_file=fopen(check_file_name,"r"))==NULL)
     fatal(_("! Cannot open output file "),check_file_name);

Modified: branches/stable/source/src/texk/web2c/cwebdir/ctwill.bux
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/ctwill.bux	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/ctwill.bux	2025-05-17 22:44:20 UTC (rev 964)
@@ -19,11 +19,11 @@
 @$line {COMMON.W}25 \&{int} [\,]@>
 @$change_line {COMMON.W}25 \&{int}@>
 @$change_depth {COMMON.W}25 \&{int}@>
-@$input_has_ended {COMMON.W}25 \&{boolean}@>
-@$changing {COMMON.W}25 \&{boolean}@>
-@$web_file_open {COMMON.W}25 \&{boolean}@>
+@$input_has_ended {COMMON.W}25 \&{bool}@>
+@$changing {COMMON.W}25 \&{bool}@>
+@$web_file_open {COMMON.W}25 \&{bool}@>
 
-@$get_line {COMMON.W}35 \&{boolean} (\,)@>
+@$get_line {COMMON.W}35 \&{bool} (\,)@>
 
 @$check_complete {COMMON.W}39 \&{void} (\,)@>
 
@@ -30,9 +30,9 @@
 @$reset_input {COMMON.W}40 \&{void} (\,)@>
 
 @$section_count {COMMON.W}42 \&{sixteen\_bits}@>
-@$changed_section {COMMON.W}42 \&{boolean} [\,]@>
-@$change_pending {COMMON.W}42 \&{boolean}@>
-@$print_where {COMMON.W}42 \&{boolean}@>
+@$changed_section {COMMON.W}42 \&{bool} [\,]@>
+@$change_pending {COMMON.W}42 \&{bool}@>
+@$print_where {COMMON.W}42 \&{bool}@>
 
 @$byte_mem {COMMON.W}43 \&{char} [\,]@>
 @$byte_mem_end {COMMON.W}43 \&{char} ${*}$@>
@@ -70,7 +70,7 @@
 @$idx_file_name {COMMON.W}73 \&{char} [\,]@>
 @$scn_file_name {COMMON.W}73 \&{char} [\,]@>
 @$check_file_name {COMMON.W}73 \&{char} [\,]@>
-@$flags {COMMON.W}73 \&{boolean} [\,]@>
+@$flags {COMMON.W}73 \&{bool} [\,]@>
 
 @$C_file {COMMON.W}83 \&{FILE} ${*}$@>
 @$tex_file {COMMON.W}83 \&{FILE} ${*}$@>

Modified: branches/stable/source/src/texk/web2c/cwebdir/cweav-w2c.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/cweav-w2c.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/cweav-w2c.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -471,24 +471,30 @@
 @z
 
 @x [12.232] l.4268
-        err_print("! TeX string should be in C text only"); break;
+        err_print("! TeX string should be in C text only");
 @y
-        err_print(_("! TeX string should be in C text only")); break;
+        err_print(_("! TeX string should be in C text only"));
 @z
 
- at x [12.232] l.4274
+ at x [12.232] l.4271
+        err_print("! Verbatim string should be in C text only"); break;
+ at y
+        err_print(_("! Verbatim string should be in C text only")); break;
+ at z
+
+ at x [12.232] l.4277
         err_print("! You can't do that in TeX text"); break;
 @y
         err_print(_("! You can't do that in TeX text")); break;
 @z
 
- at x [12.236] l.4346
+ at x [12.236] l.4349
     err_print("! Improper macro definition");
 @y
     err_print(_("! Improper macro definition"));
 @z
 
- at x [12.236] l.4359
+ at x [12.236] l.4362
         } @=/* otherwise fall through */@>@;
       default: err_print("! Improper macro definition"); break;
 @y
@@ -496,43 +502,43 @@
       default: err_print(_("! Improper macro definition")); break;
 @z
 
- at x [12.237] l.4386
+ at x [12.237] l.4389
   if (scrap_ptr!=scrap_info+2) err_print("! Improper format definition");
 @y
   if (scrap_ptr!=scrap_info+2) err_print(_("! Improper format definition"));
 @z
 
- at x [12.240] l.4421
+ at x [12.240] l.4424
   err_print("! You need an = sign after the section name");
 @y
   err_print(_("! You need an = sign after the section name"));
 @z
 
- at x [12.241] l.4443
+ at x [12.241] l.4446
   err_print("! You can't do that in C text");
 @y
   err_print(_("! You can't do that in C text"));
 @z
 
- at x [13.247] l.4534
+ at x [13.247] l.4537
   if (show_progress) printf("%s","\nWriting the index...");
 @y
   if (show_progress) printf("%s",_("\nWriting the index..."));
 @z
 
- at x [13.247] l.4545
+ at x [13.247] l.4548
     fatal("! Cannot open index file ",idx_file_name);
 @y
     fatal(_("! Cannot open index file "),idx_file_name);
 @z
 
- at x [13.247] l.4557
+ at x [13.247] l.4560
     fatal("! Cannot open section file ",scn_file_name);
 @y
     fatal(_("! Cannot open section file "),scn_file_name);
 @z
 
- at x [13.247] l.4569
+ at x [13.247] l.4572
 fclose(active_file);
 @y
 fclose(active_file); active_file=tex_file=NULL;
@@ -539,19 +545,19 @@
 if (check_for_change) @<Update the result when it has changed@>@;
 @z
 
- at x [13.247] l.4572
+ at x [13.247] l.4575
   printf("%s","Done.");
 @y
   printf("%s",_("Done."));
 @z
 
- at x [13.257] l.4724
+ at x [13.257] l.4727
     if (sort_ptr>=scrap_info_end) overflow("sorting");
 @y
     if (sort_ptr>=scrap_info_end) overflow(_("sorting"));
 @z
 
- at x [13.269] l.4861
+ at x [13.269] l.4864
   puts("\nMemory usage statistics:");
 @.Memory usage statistics:@>
   printf("%td names (out of %ld)\n",@^system dependencies@>
@@ -595,7 +601,7 @@
             (ptrdiff_t)(max_sort_ptr-scrap_info),(long)max_scraps);
 @z
 
- at x [14.270] l.4883
+ at x [14.270] l.4886
 @** Index.
 @y
 @** Extensions to {\tentex CWEB}.  The following sections introduce new or
@@ -636,7 +642,7 @@
 
 @<Update the result...@>= {
 if((tex_file=fopen(tex_file_name,"r"))!=NULL) {
-  boolean comparison=false;
+  bool comparison=false;
 
   if((check_file=fopen(check_file_name,"r"))==NULL)
     fatal(_("! Cannot open output file "),check_file_name);

Modified: branches/stable/source/src/texk/web2c/cwebdir/cweav-w32.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/cweav-w32.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/cweav-w32.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -8,13 +8,13 @@
 @z
 
 @x section 32
-boolean names_match(
+bool names_match(
 name_pointer p, /* points to the proposed match */
 const char *first, /* position of first character of string */
 size_t l, /* length of identifier */
 eight_bits t) /* desired |ilk| */
 @y
-boolean __cdecl names_match(
+bool __cdecl names_match(
 name_pointer p, /* points to the proposed match */
 const char *first, /* position of first character of string */
 size_t l, /* length of identifier */

Modified: branches/stable/source/src/texk/web2c/cwebdir/cweave.w
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/cweave.w	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/cweave.w	2025-05-17 22:44:20 UTC (rev 964)
@@ -182,7 +182,7 @@
 turned on during the first phase.
 
 @<Private...@>=
-static boolean change_exists; /* has any section changed? */
+static bool change_exists; /* has any section changed? */
 
 @ The other large memory area in \.{CWEAVE} keeps the cross-reference data.
 All uses of the name |p| are recorded in a linked list beginning at
@@ -355,7 +355,7 @@
 
 @ Here are the two procedures needed to complete |id_lookup|:
 @c
-boolean names_match(
+bool names_match(
 name_pointer p, /* points to the proposed match */
 const char *first, /* position of first character of string */
 size_t l, /* length of identifier */
@@ -730,7 +730,7 @@
 @d right_preproc 0217 /* ends a preprocessor command */
 
 @<Private...@>=
-static boolean preprocessing=false; /* are we scanning a preprocessor command? */
+static bool preprocessing=false; /* are we scanning a preprocessor command? */
 
 @ @<Raise prep...@>= {
   preprocessing=true;
@@ -743,7 +743,7 @@
 name as a string.
 
 @<Private...@>=
-static boolean sharp_include_line=false;
+static bool sharp_include_line=false;
   /* are we scanning a \#\&{include} line? */
 
 @ @<Check if next token is |include|@>=
@@ -1140,7 +1140,7 @@
     if (next_control!=begin_comment && next_control!=begin_short_comment)
       C_xref(ignore);
     else {
-      boolean is_long_comment=(next_control==begin_comment);
+      bool is_long_comment=(next_control==begin_comment);
       bal=copy_comment(is_long_comment,1); next_control='|';
       while (bal>0) {
         C_xref(section_name); /* do not reference section names in comments */
@@ -1282,7 +1282,7 @@
 
 @<Private...@>=
 static xref_pointer cur_xref; /* temporary cross-reference pointer */
-static boolean an_output; /* did |file_flag| precede |cur_xref|? */
+static bool an_output; /* did |file_flag| precede |cur_xref|? */
 
 @ The following recursive procedure
 walks through the tree of section names and prints out anomalies.
@@ -1348,7 +1348,7 @@
 @d tex_puts(c) fputs(c,active_file)
 
 @<Predecl...@>=
-static void flush_buffer(char *,boolean,boolean);@/
+static void flush_buffer(char *,bool,bool);@/
 static void finish_line(void);
 
 @ @c
@@ -1355,7 +1355,7 @@
 static void
 flush_buffer(
 char *b, /* outputs from |out_buf+1| to |b|, where |b<=out_ptr| */
-boolean per_cent,boolean carryover)
+bool per_cent,bool carryover)
 {
   char *j=b; /* pointer into |out_buf| */
   if (! per_cent) /* remove trailing blanks */
@@ -1472,7 +1472,7 @@
 
 @<Predecl...@>=
 static void out_section(sixteen_bits);@/
-static void out_name(name_pointer,boolean);
+static void out_name(name_pointer,bool);
 
 @ @c
 static void
@@ -1492,7 +1492,7 @@
 static void
 out_name(
 name_pointer p,
-boolean quote_xalpha)
+bool quote_xalpha)
 {
   char *k; /* pointer into |byte_mem| */
   out('{');
@@ -1519,7 +1519,7 @@
 @<Predecl...@>=
 static void copy_limbo(void);@/
 static eight_bits copy_TeX(void);@/
-static int copy_comment(boolean,int);
+static int copy_comment(bool,int);
 
 @ @c
 static void
@@ -1585,7 +1585,7 @@
 
 @c
 static int copy_comment( /* copies \TeX\ code in comments */
-boolean is_long_comment, /* is this a traditional \CEE/ comment? */
+bool is_long_comment, /* is this a traditional \CEE/ comment? */
 int bal) /* brace balance */
 {
   char c; /* current character being copied */
@@ -3627,7 +3627,7 @@
 token list; it also builds a new scrap if |scrapping==true|.
 
 @<Predec...@>=
-static void app_cur_id(boolean);@/
+static void app_cur_id(bool);@/
 static text_pointer C_translate(void);@/
 static void outer_parse(void);
 
@@ -3634,7 +3634,7 @@
 @ @c
 static void
 app_cur_id(
-boolean scrapping) /* are we making this into a scrap? */
+bool scrapping) /* are we making this into a scrap? */
 {
   name_pointer p=id_lookup(id_first,id_loc,normal);
   if (p->ilk<=custom) { /* not a reserved word */
@@ -3698,7 +3698,7 @@
     if (next_control!=begin_comment && next_control!=begin_short_comment)
       C_parse(ignore);
     else {
-      boolean is_long_comment=(next_control==begin_comment);
+      bool is_long_comment=(next_control==begin_comment);
       @<Make sure that there is room for the new...@>@;
       app(cancel); app(inserted);
       if (is_long_comment) app_str("\\C{"@q}@>);
@@ -3911,8 +3911,8 @@
   char delim; /* first and last character of string being copied */
   char *save_loc, *save_limit; /* |loc| and |limit| to be restored */
   name_pointer cur_section_name; /* name of section being output */
-  boolean save_mode; /* value of |cur_mode| before a sequence of breaks */
-  boolean dindent_pending=false; /* should a |dindent| be output? */
+  bool save_mode; /* value of |cur_mode| before a sequence of breaks */
+  bool dindent_pending=false; /* should a |dindent| be output? */
   app(end_translation); /* append a sentinel */
   freeze_text(); push_level(text_ptr-1);
   while (true) {
@@ -4206,10 +4206,10 @@
 static int save_line; /* former value of |out_line| */
 static char *save_place; /* former value of |out_ptr| */
 static int sec_depth; /* the integer, if any, following \.{@@*} */
-static boolean space_checked; /* have we done |emit_space_if_needed|? */
-static boolean format_visible; /* should the next format declaration be output? */
-static boolean doing_format=false; /* are we outputting a format declaration? */
-static boolean group_found=false; /* has a starred section occurred? */
+static bool space_checked; /* have we done |emit_space_if_needed|? */
+static bool format_visible; /* should the next format declaration be output? */
+static bool doing_format=false; /* are we outputting a format declaration? */
+static bool group_found=false; /* has a starred section occurred? */
 
 @ @<Translate the \9{c}current section@>= {
   section_count++;
@@ -4261,12 +4261,15 @@
   switch (next_control=copy_TeX()) {
     case '|': init_stack(); output_C(); break;
     case '@@': out('@@'); break;
-    case TeX_string: case noop:
+    case TeX_string: case verbatim: case noop:
     case xref_roman: case xref_wildcard: case xref_typewriter:
     case section_name: loc-=2; next_control=get_next(); /* skip to \.{@@>} */
       if (next_control==TeX_string)
-        err_print("! TeX string should be in C text only"); break;
+        err_print("! TeX string should be in C text only");
 @.TeX string should be...@>
+      if (next_control==verbatim)
+        err_print("! Verbatim string should be in C text only"); break;
+ at .Verbatim string should be...@>
     case thin_space: case math_break: case ord:
     case line_break: case big_line_break: case no_line_break: case join:
     case pseudo_semi: case macro_arg_open: case macro_arg_close:
@@ -4302,7 +4305,7 @@
 @c
 static void
 finish_C( /* finishes a definition or a \CEE/ part */
-  boolean visible) /* |true| if we should produce \TeX\ output */
+  bool visible) /* |true| if we should produce \TeX\ output */
 {
   text_pointer p; /* translation of the scraps */
   if (visible) {
@@ -4327,7 +4330,7 @@
     /* forget the tokens and the scraps */
 }
 
-@ @<Predecl...@>=@+static void finish_C(boolean);
+@ @<Predecl...@>=@+static void finish_C(bool);
 
 @ Keeping in line with the conventions of the \CEE/ preprocessor (and
 otherwise contrary to the rules of \.{CWEB}) we distinguish here
@@ -4770,7 +4773,7 @@
 switch (cur_name->ilk) {@+char *p; /* index into |byte_mem| */@+ at t}\6{\4@>
   case normal: case func_template:
     if (is_tiny(cur_name)) out_str("\\|");
-    else {@+boolean all_caps=true;@+ at t}\6{@>
+    else {@+bool all_caps=true;@+ at t}\6{@>
       for (p=cur_name->byte_start;p<(cur_name+1)->byte_start;p++)
         if (xislower(*p)) { /* not entirely uppercase */
           all_caps=false; break;

Modified: branches/stable/source/src/texk/web2c/cwebdir/po/cweb.pot
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/po/cweb.pot	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/po/cweb.pot	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,14 +1,14 @@
 # International version of CWEB (CWEBbin).
-# Copyright (C) 2021 Andreas Scherer et al.
+# Copyright (C) 2025 Andreas Scherer et al.
 # This file is distributed under the same license as the CWEB package.
-# Andreas Scherer <https://ascherer/github.io>, 2021.
+# Andreas Scherer <https://ascherer.github.io>, 2025.
 #
 #, fuzzy
 msgid ""
 msgstr ""
-"Project-Id-Version: CWEBbin 2021\n"
+"Project-Id-Version: CWEBbin 2025\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-02-06 15:25+0100\n"
+"POT-Creation-Date: 2025-03-12 11:51+0100\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL at ADDRESS>\n"
 "Language-Team: LANGUAGE <LL at li.org>\n"
@@ -84,13 +84,13 @@
 "! Section name incompatible with <"
 msgstr ""
 
-#: ctang-i18n.ch:173 cweav-i18n.ch:67
+#: ctang-i18n.ch:163 cweav-i18n.ch:67
 msgid ""
 "\n"
 "! Section name too long: "
 msgstr ""
 
-#: comm-i18n.ch:248
+#: comm-i18n.ch:252
 #, c-format
 msgid ""
 "\n"
@@ -97,7 +97,7 @@
 "! Sorry, %s capacity exceeded"
 msgstr ""
 
-#: ctang-i18n.ch:131 cweav-i18n.ch:45
+#: ctang-i18n.ch:121 cweav-i18n.ch:45
 msgid ""
 "\n"
 "! String too long: "
@@ -110,7 +110,7 @@
 "Irreducible scrap sequence in section %d:"
 msgstr ""
 
-#: ctang-i18n.ch:300 cweav-i18n.ch:430
+#: ctang-i18n.ch:298 cweav-i18n.ch:436
 msgid ""
 "\n"
 "Memory usage statistics:"
@@ -123,13 +123,13 @@
 "Tracing after l. %d:\n"
 msgstr ""
 
-#: cweav-i18n.ch:377
+#: cweav-i18n.ch:383
 msgid ""
 "\n"
 "Writing the index..."
 msgstr ""
 
-#: ctang-i18n.ch:63
+#: ctang-i18n.ch:64
 #, c-format
 msgid ""
 "\n"
@@ -142,13 +142,14 @@
 "Writing the output file..."
 msgstr ""
 
-#: ctang-i18n.ch:69
+#: ctang-i18n.ch:65
+#, c-format
 msgid ""
 "\n"
-"Writing the output files:"
+"Writing the output files: (%s)"
 msgstr ""
 
-#: ctang-i18n.ch:225
+#: ctang-i18n.ch:221
 msgid "! @d, @f and @c are ignored in C text"
 msgstr ""
 
@@ -156,33 +157,33 @@
 msgid "! CWEB file ended during a change"
 msgstr ""
 
-#: cweav-twill.ch:1029
+#: cweav-twill.ch:1243
 msgid "! Cannot open aux output file "
 msgstr ""
 
-#: comm-i18n.ch:84
+#: comm-i18n.ch:134
 msgid "! Cannot open change file "
 msgstr ""
 
-#: comm-i18n.ch:112
+#: comm-i18n.ch:98
 msgid "! Cannot open include file"
 msgstr ""
 
-#: cweav-i18n.ch:383
+#: cweav-i18n.ch:389
 msgid "! Cannot open index file "
 msgstr ""
 
-#: comm-i18n.ch:78
+#: comm-i18n.ch:128
 msgid "! Cannot open input file "
 msgstr ""
 
-#: comm-i18n.ch:300 comm-i18n.ch:306 comm-i18n.ch:312 comm-i18n.ch:318
-#: ctang-i18n.ch:83 ctang-i18n.ch:89 ctang-i18n.ch:315 ctang-i18n.ch:321
-#: cweav-i18n.ch:455
+#: comm-i18n.ch:304 comm-i18n.ch:310 comm-i18n.ch:324 comm-i18n.ch:330
+#: comm-i18n.ch:336 comm-i18n.ch:342 ctang-i18n.ch:79 ctang-i18n.ch:313
+#: ctang-i18n.ch:319 ctang-i18n.ch:325 ctang-i18n.ch:331 cweav-i18n.ch:461
 msgid "! Cannot open output file "
 msgstr ""
 
-#: cweav-i18n.ch:389
+#: cweav-i18n.ch:395
 msgid "! Cannot open section file "
 msgstr ""
 
@@ -194,11 +195,11 @@
 msgid "! Change file ended before @y"
 msgstr ""
 
-#: comm-i18n.ch:120
+#: comm-i18n.ch:106
 msgid "! Change file ended without @z"
 msgstr ""
 
-#: comm-i18n.ch:134
+#: comm-i18n.ch:120
 msgid "! Change file entry did not match"
 msgstr ""
 
@@ -214,23 +215,23 @@
 msgid "! Control text didn't end"
 msgstr ""
 
-#: ctang-i18n.ch:257
+#: ctang-i18n.ch:253
 msgid "! Definition flushed, must start with identifier"
 msgstr ""
 
-#: ctang-i18n.ch:153
+#: ctang-i18n.ch:143
 msgid "! Double @ should be used in ASCII constant"
 msgstr ""
 
-#: ctang-i18n.ch:145 ctang-i18n.ch:265
+#: ctang-i18n.ch:135 ctang-i18n.ch:261
 msgid "! Double @ should be used in control text"
 msgstr ""
 
-#: ctang-i18n.ch:271 cweav-i18n.ch:167 cweav-twill.ch:661 cweav-twill.ch:664
+#: ctang-i18n.ch:269 cweav-i18n.ch:167 cweav-twill.ch:364 cweav-twill.ch:367
 msgid "! Double @ should be used in limbo"
 msgstr ""
 
-#: ctang-i18n.ch:241
+#: ctang-i18n.ch:237
 msgid "! Double @ should be used in string"
 msgstr ""
 
@@ -242,11 +243,11 @@
 msgid "! Extra } in comment"
 msgstr ""
 
-#: comm-i18n.ch:292
+#: comm-i18n.ch:296
 msgid "! Filename too long\n"
 msgstr ""
 
-#: cweav-twill.ch:541
+#: cweav-twill.ch:1024
 msgid "! Identifier in meaning should be followed by space"
 msgstr ""
 
@@ -254,39 +255,39 @@
 msgid "! Illegal use of @ in comment"
 msgstr ""
 
-#: cweav-i18n.ch:353
+#: cweav-i18n.ch:359
 msgid "! Improper format definition"
 msgstr ""
 
-#: ctang-i18n.ch:279
+#: ctang-i18n.ch:277
 msgid "! Improper hex number following @l"
 msgstr ""
 
-#: cweav-i18n.ch:339 cweav-i18n.ch:345
+#: cweav-i18n.ch:343 cweav-i18n.ch:351
 msgid "! Improper macro definition"
 msgstr ""
 
-#: comm-i18n.ch:92
+#: comm-i18n.ch:78
 msgid "! Include file name not given"
 msgstr ""
 
-#: comm-i18n.ch:106
+#: comm-i18n.ch:92
 msgid "! Include file name too long"
 msgstr ""
 
-#: comm-i18n.ch:324
+#: comm-i18n.ch:316
 msgid "! Include path too long"
 msgstr ""
 
-#: ctang-i18n.ch:105 cweav-i18n.ch:181
+#: ctang-i18n.ch:95 cweav-i18n.ch:181
 msgid "! Input ended in mid-comment"
 msgstr ""
 
-#: ctang-i18n.ch:125 cweav-i18n.ch:39
+#: ctang-i18n.ch:115 cweav-i18n.ch:39
 msgid "! Input ended in middle of string"
 msgstr ""
 
-#: ctang-i18n.ch:167 cweav-i18n.ch:61
+#: ctang-i18n.ch:157 cweav-i18n.ch:61
 msgid "! Input ended in section name"
 msgstr ""
 
@@ -294,11 +295,11 @@
 msgid "! Input line too long"
 msgstr ""
 
-#: cweav-twill.ch:548
+#: cweav-twill.ch:1032
 msgid "! Location in meaning should be followed by space"
 msgstr ""
 
-#: ctang-i18n.ch:219
+#: ctang-i18n.ch:215
 msgid "! Misplaced @h"
 msgstr ""
 
@@ -310,7 +311,7 @@
 msgid "! Missing @x in change file"
 msgstr ""
 
-#: ctang-i18n.ch:233
+#: ctang-i18n.ch:229
 msgid "! Missing `@ ' before a named section"
 msgstr ""
 
@@ -326,27 +327,27 @@
 msgid "! Missing } in comment"
 msgstr ""
 
-#: ctang-i18n.ch:187
+#: ctang-i18n.ch:177
 msgid "! Nesting of section names not allowed"
 msgstr ""
 
-#: cweav-twill.ch:1025
+#: cweav-twill.ch:1239
 msgid "! Only @$ is allowed in aux and bux files"
 msgstr ""
 
-#: ctang-i18n.ch:285
+#: ctang-i18n.ch:283
 msgid "! Replacement string in @l too long"
 msgstr ""
 
-#: ctang-i18n.ch:181 cweav-i18n.ch:75
+#: ctang-i18n.ch:171 cweav-i18n.ch:75
 msgid "! Section name didn't end"
 msgstr ""
 
-#: ctang-i18n.ch:111
+#: ctang-i18n.ch:101
 msgid "! Section name ended in mid-comment"
 msgstr ""
 
-#: ctang-i18n.ch:119 ctang-i18n.ch:159 cweav-i18n.ch:33
+#: ctang-i18n.ch:109 ctang-i18n.ch:149 cweav-i18n.ch:33
 msgid "! String didn't end"
 msgstr ""
 
@@ -354,146 +355,150 @@
 msgid "! TeX string should be in C text only"
 msgstr ""
 
-#: comm-i18n.hch:42
+#: comm-i18n.hch:56
 msgid "! This can't happen: "
 msgstr ""
 
-#: cweav-twill.ch:307
+#: cweav-twill.ch:1370
 msgid "! Title name didn't end"
 msgstr ""
 
-#: cweav-twill.ch:305
+#: cweav-twill.ch:1368
 msgid "! Title should be enclosed in braces or doublequotes"
 msgstr ""
 
-#: comm-i18n.ch:98
+#: comm-i18n.ch:84
 msgid "! Too many nested includes"
 msgstr ""
 
-#: ctang-i18n.ch:249
+#: ctang-i18n.ch:245
 msgid "! Unrecognized escape sequence"
 msgstr ""
 
-#: comm-i18n.ch:272
+#: comm-i18n.ch:276
 msgid ""
 "! Usage: ctangle [options] webfile[.w] [{changefile[.ch]|-} [outfile[.c]]]\n"
 msgstr ""
 
-#: comm-i18n.ch:281
+#: comm-i18n.ch:285
 msgid ""
 "! Usage: ctwill [options] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
 msgstr ""
 
-#: comm-i18n.ch:277
+#: comm-i18n.ch:281
 msgid ""
 "! Usage: cweave [options] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
 msgstr ""
 
-#: ctang-i18n.ch:139 cweav-i18n.ch:53 cweav-i18n.ch:119
+#: ctang-i18n.ch:129 cweav-i18n.ch:53 cweav-i18n.ch:119
 msgid "! Use @l in limbo only"
 msgstr ""
 
-#: ctang-i18n.ch:195 cweav-i18n.ch:103
+#: ctang-i18n.ch:185 cweav-i18n.ch:103
 msgid "! Verbatim string didn't end"
 msgstr ""
 
+#: cweav-i18n.ch:330
+msgid "! Verbatim string should be in C text only"
+msgstr ""
+
 #: comm-i18n.ch:64
 msgid "! Where is the matching @y?"
 msgstr ""
 
-#: comm-i18n.ch:126
+#: comm-i18n.ch:112
 msgid "! Where is the matching @z?"
 msgstr ""
 
-#: cweav-i18n.ch:369
+#: cweav-i18n.ch:375
 msgid "! You can't do that in C text"
 msgstr ""
 
-#: cweav-i18n.ch:331
+#: cweav-i18n.ch:335
 msgid "! You can't do that in TeX text"
 msgstr ""
 
-#: cweav-i18n.ch:361
+#: cweav-i18n.ch:367
 msgid "! You need an = sign after the section name"
 msgstr ""
 
-#: ctang-i18n.ch:305 cweav-i18n.ch:436 cweav-twill.ch:1335 cweav-twill.ch:1338
+#: ctang-i18n.ch:303 cweav-i18n.ch:442 cweav-twill.ch:754 cweav-twill.ch:757
 #, c-format
-msgid "%ld bytes (out of %ld)\n"
+msgid "%td bytes (out of %ld)\n"
 msgstr ""
 
-#: cweav-i18n.ch:434
+#: cweav-i18n.ch:440
 #, c-format
-msgid "%ld cross-references (out of %ld)\n"
+msgid "%td cross-references (out of %ld)\n"
 msgstr ""
 
-#: cweav-i18n.ch:445 cweav-i18n.ch:448
+#: cweav-i18n.ch:451 cweav-i18n.ch:454
 #, c-format
-msgid "%ld levels (out of %ld)\n"
+msgid "%td levels (out of %ld)\n"
 msgstr ""
 
-#: ctang-i18n.ch:301 cweav-i18n.ch:432
+#: ctang-i18n.ch:299 cweav-i18n.ch:438
 #, c-format
-msgid "%ld names (out of %ld)\n"
+msgid "%td names (out of %ld)\n"
 msgstr ""
 
-#: ctang-i18n.ch:303
+#: ctang-i18n.ch:301
 #, c-format
-msgid "%ld replacement texts (out of %ld)\n"
+msgid "%td replacement texts (out of %ld)\n"
 msgstr ""
 
-#: cweav-i18n.ch:439
+#: cweav-i18n.ch:445
 #, c-format
-msgid "%ld scraps (out of %ld)\n"
+msgid "%td scraps (out of %ld)\n"
 msgstr ""
 
-#: cweav-twill.ch:1340
+#: cweav-twill.ch:759
 #, c-format
-msgid "%ld temp meanings (out of %ld)\n"
+msgid "%td temp meanings (out of %ld)\n"
 msgstr ""
 
-#: cweav-i18n.ch:441
+#: cweav-i18n.ch:447
 #, c-format
-msgid "%ld texts (out of %ld)\n"
+msgid "%td texts (out of %ld)\n"
 msgstr ""
 
-#: cweav-twill.ch:1343
+#: cweav-twill.ch:762
 #, c-format
-msgid "%ld titles (out of %ld)\n"
+msgid "%td titles (out of %ld)\n"
 msgstr ""
 
-#: ctang-i18n.ch:307 cweav-i18n.ch:443
+#: ctang-i18n.ch:305 cweav-i18n.ch:449
 #, c-format
-msgid "%ld tokens (out of %ld)\n"
+msgid "%td tokens (out of %ld)\n"
 msgstr ""
 
-#: comm-i18n.ch:236
+#: comm-i18n.ch:240
 msgid "(Did you see the warning message above?)"
 msgstr ""
 
-#: comm-i18n.ch:234
+#: comm-i18n.ch:238
 msgid "(No errors were found.)"
 msgstr ""
 
-#: comm-i18n.ch:238
+#: comm-i18n.ch:242
 msgid "(Pardon me, but I think I spotted something wrong.)"
 msgstr ""
 
-#: comm-i18n.ch:240
+#: comm-i18n.ch:244
 msgid "(That was a fatal error, my friend.)"
 msgstr ""
 
-#: comm-i18n.ch:218
+#: comm-i18n.ch:219
 #, c-format
 msgid ". (l. %d of change file)\n"
 msgstr ""
 
-#: comm-i18n.ch:220
+#: comm-i18n.ch:222
 #, c-format
 msgid ". (l. %d of include file %s)\n"
 msgstr ""
 
-#: comm-i18n.ch:219
+#: comm-i18n.ch:221
 #, c-format
 msgid ". (l. %d)\n"
 msgstr ""
@@ -510,15 +515,15 @@
 " which abbreviates <"
 msgstr ""
 
-#: ctang-i18n.ch:75 cweav-i18n.ch:395
+#: ctang-i18n.ch:71 cweav-i18n.ch:401
 msgid "Done."
 msgstr ""
 
-#: cweav-i18n.ch:438
+#: cweav-i18n.ch:444
 msgid "Parsing:"
 msgstr ""
 
-#: cweav-i18n.ch:447
+#: cweav-i18n.ch:453
 msgid "Sorting:"
 msgstr ""
 
@@ -526,11 +531,11 @@
 msgid "This is CTANGLE (Version 4.12.1 [CWEBbin 2025])"
 msgstr ""
 
-#: cweav-twill.ch:61
+#: cweav-twill.ch:93
 msgid "This is CTWILL (Version 4.12.1 [CWEBbin 2025])"
 msgstr ""
 
-#: cweav-i18n.ch:17 cweav-twill.ch:42
+#: cweav-i18n.ch:17 cweav-twill.ch:69
 msgid "This is CWEAVE (Version 4.12.1 [CWEBbin 2025])"
 msgstr ""
 
@@ -546,15 +551,15 @@
 msgid "cross-reference"
 msgstr ""
 
-#: cweav-twill.ch:818
+#: cweav-twill.ch:1161
 msgid "find type"
 msgstr ""
 
-#: cweav-twill.ch:757
+#: cweav-twill.ch:1096
 msgid "inner"
 msgstr ""
 
-#: ctang-i18n.ch:97
+#: ctang-i18n.ch:87
 msgid "macro defs have strange char"
 msgstr ""
 
@@ -578,7 +583,7 @@
 msgid "section number"
 msgstr ""
 
-#: cweav-i18n.ch:403
+#: cweav-i18n.ch:409
 msgid "sorting"
 msgstr ""
 
@@ -586,19 +591,19 @@
 msgid "stack"
 msgstr ""
 
-#: cweav-twill.ch:561
+#: cweav-twill.ch:1057
 msgid "temp meanings"
 msgstr ""
 
-#: ctang-i18n.ch:211 cweav-i18n.ch:223
+#: ctang-i18n.ch:207 cweav-i18n.ch:223
 msgid "text"
 msgstr ""
 
-#: cweav-twill.ch:308
+#: cweav-twill.ch:1371
 msgid "titles"
 msgstr ""
 
-#: ctang-i18n.ch:25 ctang-i18n.ch:203 cweav-i18n.ch:175 cweav-i18n.ch:217
+#: ctang-i18n.ch:25 ctang-i18n.ch:197 cweav-i18n.ch:175 cweav-i18n.ch:217
 #: cweav-i18n.ch:231
 msgid "token"
 msgstr ""

Modified: branches/stable/source/src/texk/web2c/cwebdir/po/de/cweb.po
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/po/de/cweb.po	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/po/de/cweb.po	2025-05-17 22:44:20 UTC (rev 964)
@@ -7,7 +7,7 @@
 msgstr ""
 "Project-Id-Version: CWEBbin 2025\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2025-01-01 15:08+0100\n"
+"POT-Creation-Date: 2025-03-12 11:51+0100\n"
 "PO-Revision-Date: 2025-01-01 15:08+0100\n"
 "Last-Translator: Andreas Scherer <andreas_github at freenet.de>\n"
 "Language-Team: German\n"
@@ -106,7 +106,7 @@
 "\n"
 "! Abschnittname passt nicht zu <"
 
-#: ctang-i18n.ch:173 cweav-i18n.ch:67
+#: ctang-i18n.ch:163 cweav-i18n.ch:67
 msgid ""
 "\n"
 "! Section name too long: "
@@ -114,7 +114,7 @@
 "\n"
 "! Abschnittname ist zu lang: "
 
-#: comm-i18n.ch:248
+#: comm-i18n.ch:252
 #, c-format
 msgid ""
 "\n"
@@ -123,7 +123,7 @@
 "\n"
 "! Tut mir leid, Kapazität für %s überschritten"
 
-#: ctang-i18n.ch:131 cweav-i18n.ch:45
+#: ctang-i18n.ch:121 cweav-i18n.ch:45
 msgid ""
 "\n"
 "! String too long: "
@@ -140,7 +140,7 @@
 "\n"
 "Nicht reduzierbare Scrap-Folge in Abschnitt %d:"
 
-#: ctang-i18n.ch:300 cweav-i18n.ch:430
+#: ctang-i18n.ch:298 cweav-i18n.ch:436
 msgid ""
 "\n"
 "Memory usage statistics:"
@@ -157,7 +157,7 @@
 "\n"
 "Analyse nach Zeile %d:\n"
 
-#: cweav-i18n.ch:377
+#: cweav-i18n.ch:383
 msgid ""
 "\n"
 "Writing the index..."
@@ -165,7 +165,7 @@
 "\n"
 "Schreibe den Index..."
 
-#: ctang-i18n.ch:63
+#: ctang-i18n.ch:64
 #, c-format
 msgid ""
 "\n"
@@ -182,15 +182,16 @@
 "\n"
 "Schreibe die Ausgabedatei..."
 
-#: ctang-i18n.ch:69
+#: ctang-i18n.ch:65
+#, c-format
 msgid ""
 "\n"
-"Writing the output files:"
+"Writing the output files: (%s)"
 msgstr ""
 "\n"
-"Schreibe die Ausgabedateien:"
+"Schreibe die Ausgabedateien: (%s)"
 
-#: ctang-i18n.ch:225
+#: ctang-i18n.ch:221
 msgid "! @d, @f and @c are ignored in C text"
 msgstr "! @d, @f und @c werden im C-Text ignoriert"
 
@@ -198,33 +199,33 @@
 msgid "! CWEB file ended during a change"
 msgstr "! CWEB-Datei endete während einer Änderung"
 
-#: cweav-twill.ch:1029
+#: cweav-twill.ch:1243
 msgid "! Cannot open aux output file "
 msgstr "! Kann aux-Ausgabedatei nicht öffnen: "
 
-#: comm-i18n.ch:84
+#: comm-i18n.ch:134
 msgid "! Cannot open change file "
 msgstr "! Kann Änderungsdatei nicht öffnen: "
 
-#: comm-i18n.ch:112
+#: comm-i18n.ch:98
 msgid "! Cannot open include file"
 msgstr "! Kann Einfügedatei nicht öffnen"
 
-#: cweav-i18n.ch:383
+#: cweav-i18n.ch:389
 msgid "! Cannot open index file "
 msgstr "! Kann Indexdatei nicht öffnen: "
 
-#: comm-i18n.ch:78
+#: comm-i18n.ch:128
 msgid "! Cannot open input file "
 msgstr "! Kann Eingabedatei nicht öffnen: "
 
-#: comm-i18n.ch:300 comm-i18n.ch:306 comm-i18n.ch:312 comm-i18n.ch:318
-#: ctang-i18n.ch:83 ctang-i18n.ch:89 ctang-i18n.ch:315 ctang-i18n.ch:321
-#: cweav-i18n.ch:455
+#: comm-i18n.ch:304 comm-i18n.ch:310 comm-i18n.ch:324 comm-i18n.ch:330
+#: comm-i18n.ch:336 comm-i18n.ch:342 ctang-i18n.ch:79 ctang-i18n.ch:313
+#: ctang-i18n.ch:319 ctang-i18n.ch:325 ctang-i18n.ch:331 cweav-i18n.ch:461
 msgid "! Cannot open output file "
 msgstr "! Kann Ausgabedatei nicht öffnen: "
 
-#: cweav-i18n.ch:389
+#: cweav-i18n.ch:395
 msgid "! Cannot open section file "
 msgstr "! Kann die Abschnittdatei nicht öffnen: "
 
@@ -236,11 +237,11 @@
 msgid "! Change file ended before @y"
 msgstr "! Änderungsdatei endete vor @y"
 
-#: comm-i18n.ch:120
+#: comm-i18n.ch:106
 msgid "! Change file ended without @z"
 msgstr "! Änderungsdatei endete ohne @z"
 
-#: comm-i18n.ch:134
+#: comm-i18n.ch:120
 msgid "! Change file entry did not match"
 msgstr "! Eintrag in der Änderungsdatei stimmt nicht überein"
 
@@ -256,23 +257,23 @@
 msgid "! Control text didn't end"
 msgstr "! Kontrolltext nicht beendet"
 
-#: ctang-i18n.ch:257
+#: ctang-i18n.ch:253
 msgid "! Definition flushed, must start with identifier"
 msgstr "! Definition übergangen, muss mit einem Bezeichner anfangen"
 
-#: ctang-i18n.ch:153
+#: ctang-i18n.ch:143
 msgid "! Double @ should be used in ASCII constant"
 msgstr "! In ASCII Konstanten sollten doppelte @ verwendet werden"
 
-#: ctang-i18n.ch:145 ctang-i18n.ch:265
+#: ctang-i18n.ch:135 ctang-i18n.ch:261
 msgid "! Double @ should be used in control text"
 msgstr "! In Kontrolltexten sollten doppelte @ verwendet werden"
 
-#: ctang-i18n.ch:271 cweav-i18n.ch:167 cweav-twill.ch:661 cweav-twill.ch:664
+#: ctang-i18n.ch:269 cweav-i18n.ch:167 cweav-twill.ch:364 cweav-twill.ch:367
 msgid "! Double @ should be used in limbo"
 msgstr "! Im Einführungsteil sollten doppelte @ verwendet werden"
 
-#: ctang-i18n.ch:241
+#: ctang-i18n.ch:237
 msgid "! Double @ should be used in string"
 msgstr "! In einer Zeichenkette sollten doppelte @ verwendet werden"
 
@@ -284,11 +285,11 @@
 msgid "! Extra } in comment"
 msgstr "! Zusätzliche } in Kommentar"
 
-#: comm-i18n.ch:292
+#: comm-i18n.ch:296
 msgid "! Filename too long\n"
 msgstr "! Dateiname zu lang\n"
 
-#: cweav-twill.ch:541
+#: cweav-twill.ch:1024
 msgid "! Identifier in meaning should be followed by space"
 msgstr "! Bezeichner in Bedeutung sollte Leerzeichen folgen"
 
@@ -296,39 +297,39 @@
 msgid "! Illegal use of @ in comment"
 msgstr "! Unerlaubte Verwendung von @ in Kommentar"
 
-#: cweav-i18n.ch:353
+#: cweav-i18n.ch:359
 msgid "! Improper format definition"
 msgstr "! Ungültige Formatdefinition"
 
-#: ctang-i18n.ch:279
+#: ctang-i18n.ch:277
 msgid "! Improper hex number following @l"
 msgstr "! Ungültige Hexadezimalzahl nach @l"
 
-#: cweav-i18n.ch:339 cweav-i18n.ch:345
+#: cweav-i18n.ch:343 cweav-i18n.ch:351
 msgid "! Improper macro definition"
 msgstr "! Ungültige Makrodefinition"
 
-#: comm-i18n.ch:92
+#: comm-i18n.ch:78
 msgid "! Include file name not given"
 msgstr "! Name der Einfügedatei nicht angegeben"
 
-#: comm-i18n.ch:106
+#: comm-i18n.ch:92
 msgid "! Include file name too long"
 msgstr "! Name der Einfügedatei zu lang"
 
-#: comm-i18n.ch:324
+#: comm-i18n.ch:316
 msgid "! Include path too long"
 msgstr "! Einfügepfad zu lang"
 
-#: ctang-i18n.ch:105 cweav-i18n.ch:181
+#: ctang-i18n.ch:95 cweav-i18n.ch:181
 msgid "! Input ended in mid-comment"
 msgstr "! Eingabe endete mitten in einem Kommentar"
 
-#: ctang-i18n.ch:125 cweav-i18n.ch:39
+#: ctang-i18n.ch:115 cweav-i18n.ch:39
 msgid "! Input ended in middle of string"
 msgstr "! Eingabe endete mitten in einer Zeichenkette"
 
-#: ctang-i18n.ch:167 cweav-i18n.ch:61
+#: ctang-i18n.ch:157 cweav-i18n.ch:61
 msgid "! Input ended in section name"
 msgstr "! Eingabe endete in einem Abschnittnamen"
 
@@ -336,11 +337,11 @@
 msgid "! Input line too long"
 msgstr "! Eingabezeile zu lang"
 
-#: cweav-twill.ch:548
+#: cweav-twill.ch:1032
 msgid "! Location in meaning should be followed by space"
 msgstr "! Herkunftsort in Bedeutung sollte Leerzeichen folgen"
 
-#: ctang-i18n.ch:219
+#: ctang-i18n.ch:215
 msgid "! Misplaced @h"
 msgstr "! Falsch platziertes @h"
 
@@ -352,7 +353,7 @@
 msgid "! Missing @x in change file"
 msgstr "! Fehlendes @x in der Änderungsdatei"
 
-#: ctang-i18n.ch:233
+#: ctang-i18n.ch:229
 msgid "! Missing `@ ' before a named section"
 msgstr "! Fehlendes `@ ' vor einem Abschnittnamen"
 
@@ -368,27 +369,27 @@
 msgid "! Missing } in comment"
 msgstr "! Fehlende } in Kommentar"
 
-#: ctang-i18n.ch:187
+#: ctang-i18n.ch:177
 msgid "! Nesting of section names not allowed"
 msgstr "! Verschachtelung von Abschnittnamen nicht erlaubt"
 
-#: cweav-twill.ch:1025
+#: cweav-twill.ch:1239
 msgid "! Only @$ is allowed in aux and bux files"
 msgstr "! Nur @$ ist in aux- und bux-Dateien erlaubt"
 
-#: ctang-i18n.ch:285
+#: ctang-i18n.ch:283
 msgid "! Replacement string in @l too long"
 msgstr "! Ersetzungstext in @l zu lang"
 
-#: ctang-i18n.ch:181 cweav-i18n.ch:75
+#: ctang-i18n.ch:171 cweav-i18n.ch:75
 msgid "! Section name didn't end"
 msgstr "! Abschnittname nicht beendet"
 
-#: ctang-i18n.ch:111
+#: ctang-i18n.ch:101
 msgid "! Section name ended in mid-comment"
 msgstr "! Abschnittname endete mitten in einem Kommentar"
 
-#: ctang-i18n.ch:119 ctang-i18n.ch:159 cweav-i18n.ch:33
+#: ctang-i18n.ch:109 ctang-i18n.ch:149 cweav-i18n.ch:33
 msgid "! String didn't end"
 msgstr "! Zeichenkette nicht beendet"
 
@@ -396,27 +397,27 @@
 msgid "! TeX string should be in C text only"
 msgstr "! TeX-Zeichenkette sollte nur in C-Text stehen"
 
-#: comm-i18n.hch:42
+#: comm-i18n.hch:56
 msgid "! This can't happen: "
 msgstr "! Das kann nicht sein: "
 
-#: cweav-twill.ch:307
+#: cweav-twill.ch:1370
 msgid "! Title name didn't end"
 msgstr "! Titel nicht beendet"
 
-#: cweav-twill.ch:305
+#: cweav-twill.ch:1368
 msgid "! Title should be enclosed in braces or doublequotes"
 msgstr "! Titel sollte in geschweiften Klammern oder Anführungszeichen stehen"
 
-#: comm-i18n.ch:98
+#: comm-i18n.ch:84
 msgid "! Too many nested includes"
 msgstr "! Zu viele verschachtelte Einfügungen"
 
-#: ctang-i18n.ch:249
+#: ctang-i18n.ch:245
 msgid "! Unrecognized escape sequence"
 msgstr "! Unbekannte Escape-Sequenz"
 
-#: comm-i18n.ch:272
+#: comm-i18n.ch:276
 msgid ""
 "! Usage: ctangle [options] webfile[.w] [{changefile[.ch]|-} [outfile[.c]]]\n"
 msgstr ""
@@ -428,7 +429,7 @@
 "s [-] Melde die Verbrauchsstatistik\n"
 "t [+] Vergleiche temporäre Ausgabe nach Änderungen\n"
 
-#: comm-i18n.ch:281
+#: comm-i18n.ch:285
 msgid ""
 "! Usage: ctwill [options] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
 msgstr ""
@@ -447,7 +448,7 @@
 "s [-] Melde die Verbrauchsstatistik\n"
 "t [+] Vergleiche temporäre Ausgabe nach Änderungen\n"
 
-#: comm-i18n.ch:277
+#: comm-i18n.ch:281
 msgid ""
 "! Usage: cweave [options] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
 msgstr ""
@@ -465,111 +466,115 @@
 "s [-] Melde die Verbrauchsstatistik\n"
 "t [+] Vergleiche temporäre Ausgabe nach Änderungen\n"
 
-#: ctang-i18n.ch:139 cweav-i18n.ch:53 cweav-i18n.ch:119
+#: ctang-i18n.ch:129 cweav-i18n.ch:53 cweav-i18n.ch:119
 msgid "! Use @l in limbo only"
 msgstr "! Verwende @l ausschließlich im Einführungsteil"
 
-#: ctang-i18n.ch:195 cweav-i18n.ch:103
+#: ctang-i18n.ch:185 cweav-i18n.ch:103
 msgid "! Verbatim string didn't end"
 msgstr "! Verbatim-Zeichenkette nicht beendet"
 
+#: cweav-i18n.ch:330
+msgid "! Verbatim string should be in C text only"
+msgstr "! Verbatim-Zeichenkette sollte nur in C-Text stehen"
+
 #: comm-i18n.ch:64
 msgid "! Where is the matching @y?"
 msgstr "! Wo ist das zugehörige @y?"
 
-#: comm-i18n.ch:126
+#: comm-i18n.ch:112
 msgid "! Where is the matching @z?"
 msgstr "! Wo ist das zugehörige @z?"
 
-#: cweav-i18n.ch:369
+#: cweav-i18n.ch:375
 msgid "! You can't do that in C text"
 msgstr "! Das geht nicht im C-Text"
 
-#: cweav-i18n.ch:331
+#: cweav-i18n.ch:335
 msgid "! You can't do that in TeX text"
 msgstr "! Das geht nicht im TeX-Text"
 
-#: cweav-i18n.ch:361
+#: cweav-i18n.ch:367
 msgid "! You need an = sign after the section name"
 msgstr "! Hinter dem Abschnittnamen muss ein = Zeichen stehen"
 
-#: ctang-i18n.ch:305 cweav-i18n.ch:436 cweav-twill.ch:1335 cweav-twill.ch:1338
+#: ctang-i18n.ch:303 cweav-i18n.ch:442 cweav-twill.ch:754 cweav-twill.ch:757
 #, c-format
-msgid "%ld bytes (out of %ld)\n"
-msgstr "%ld Bytes (von %ld)\n"
+msgid "%td bytes (out of %ld)\n"
+msgstr "%td Bytes (von %ld)\n"
 
-#: cweav-i18n.ch:434
+#: cweav-i18n.ch:440
 #, c-format
-msgid "%ld cross-references (out of %ld)\n"
-msgstr "%ld Querverweise (von %ld)\n"
+msgid "%td cross-references (out of %ld)\n"
+msgstr "%td Querverweise (von %ld)\n"
 
-#: cweav-i18n.ch:445 cweav-i18n.ch:448
+#: cweav-i18n.ch:451 cweav-i18n.ch:454
 #, c-format
-msgid "%ld levels (out of %ld)\n"
-msgstr "%ld Ebenen (von %ld)\n"
+msgid "%td levels (out of %ld)\n"
+msgstr "%td Ebenen (von %ld)\n"
 
-#: ctang-i18n.ch:301 cweav-i18n.ch:432
+#: ctang-i18n.ch:299 cweav-i18n.ch:438
 #, c-format
-msgid "%ld names (out of %ld)\n"
-msgstr "%ld Namen (von %ld)\n"
+msgid "%td names (out of %ld)\n"
+msgstr "%td Namen (von %ld)\n"
 
-#: ctang-i18n.ch:303
+#: ctang-i18n.ch:301
 #, c-format
-msgid "%ld replacement texts (out of %ld)\n"
-msgstr "%ld Ersetzungstexte (von %ld)\n"
+msgid "%td replacement texts (out of %ld)\n"
+msgstr "%td Ersetzungstexte (von %ld)\n"
 
-#: cweav-i18n.ch:439
+#: cweav-i18n.ch:445
 #, c-format
-msgid "%ld scraps (out of %ld)\n"
-msgstr "%ld Scraps (von %ld)\n"
+msgid "%td scraps (out of %ld)\n"
+msgstr "%td Scraps (von %ld)\n"
 
-#: cweav-twill.ch:1340
+#: cweav-twill.ch:759
 #, c-format
-msgid "%ld temp meanings (out of %ld)\n"
-msgstr "%ld temporäre Bedeutungen (von %ld)\n"
+msgid "%td temp meanings (out of %ld)\n"
+msgstr "%td temporäre Bedeutungen (von %ld)\n"
 
-#: cweav-i18n.ch:441
+#: cweav-i18n.ch:447
 #, c-format
-msgid "%ld texts (out of %ld)\n"
-msgstr "%ld Texte (von %ld)\n"
+msgid "%td texts (out of %ld)\n"
+msgstr "%td Texte (von %ld)\n"
 
-#: cweav-twill.ch:1343
+#: cweav-twill.ch:762
 #, c-format
-msgid "%ld titles (out of %ld)\n"
-msgstr "%ld Titel (von %ld)\n"
+msgid "%td titles (out of %ld)\n"
+msgstr "%td Titel (von %ld)\n"
 
-#: ctang-i18n.ch:307 cweav-i18n.ch:443
+#: ctang-i18n.ch:305 cweav-i18n.ch:449
 #, c-format
-msgid "%ld tokens (out of %ld)\n"
-msgstr "%ld Token (von %ld)\n"
+msgid "%td tokens (out of %ld)\n"
+msgstr "%td Token (von %ld)\n"
 
-#: comm-i18n.ch:236
+#: comm-i18n.ch:240
 msgid "(Did you see the warning message above?)"
 msgstr "(Hast du die obige Warnung gesehen?)"
 
-#: comm-i18n.ch:234
+#: comm-i18n.ch:238
 msgid "(No errors were found.)"
 msgstr "(Keine Fehler gefunden.)"
 
-#: comm-i18n.ch:238
+#: comm-i18n.ch:242
 msgid "(Pardon me, but I think I spotted something wrong.)"
 msgstr "(Entschuldige bitte, aber ich glaube, etwas stimmt nicht.)"
 
-#: comm-i18n.ch:240
+#: comm-i18n.ch:244
 msgid "(That was a fatal error, my friend.)"
 msgstr "(Mensch, das war ein böser Fehler.)"
 
-#: comm-i18n.ch:218
+#: comm-i18n.ch:219
 #, c-format
 msgid ". (l. %d of change file)\n"
 msgstr ". (Zeile %d der Änderungsdatei)\n"
 
-#: comm-i18n.ch:220
+#: comm-i18n.ch:222
 #, c-format
 msgid ". (l. %d of include file %s)\n"
 msgstr ". (Zeile %d der Einfügedatei %s)\n"
 
-#: comm-i18n.ch:219
+#: comm-i18n.ch:221
 #, c-format
 msgid ". (l. %d)\n"
 msgstr ". (Zeile %d)\n"
@@ -590,15 +595,15 @@
 ">,\n"
 " einer Abkürzung von <"
 
-#: ctang-i18n.ch:75 cweav-i18n.ch:395
+#: ctang-i18n.ch:71 cweav-i18n.ch:401
 msgid "Done."
 msgstr "Fertig."
 
-#: cweav-i18n.ch:438
+#: cweav-i18n.ch:444
 msgid "Parsing:"
 msgstr "Parsen:"
 
-#: cweav-i18n.ch:447
+#: cweav-i18n.ch:453
 msgid "Sorting:"
 msgstr "Sortieren:"
 
@@ -606,11 +611,11 @@
 msgid "This is CTANGLE (Version 4.12.1 [CWEBbin 2025])"
 msgstr "Dies ist CTANGLE (Version 4.12.1 [CWEBbin 2025])"
 
-#: cweav-twill.ch:61
+#: cweav-twill.ch:93
 msgid "This is CTWILL (Version 4.12.1 [CWEBbin 2025])"
 msgstr "Dies ist CTWILL (Version 4.12.1 [CWEBbin 2025])"
 
-#: cweav-i18n.ch:17 cweav-twill.ch:42
+#: cweav-i18n.ch:17 cweav-twill.ch:69
 msgid "This is CWEAVE (Version 4.12.1 [CWEBbin 2025])"
 msgstr "Dies ist CWEAVE (Version 4.12.1 [CWEBbin 2025])"
 
@@ -626,15 +631,15 @@
 msgid "cross-reference"
 msgstr "Querverweise"
 
-#: cweav-twill.ch:818
+#: cweav-twill.ch:1161
 msgid "find type"
 msgstr "Auffindetyp"
 
-#: cweav-twill.ch:757
+#: cweav-twill.ch:1096
 msgid "inner"
 msgstr "inner"
 
-#: ctang-i18n.ch:97
+#: ctang-i18n.ch:87
 msgid "macro defs have strange char"
 msgstr "Unpassendes Zeichen in einer Makrodefinition"
 
@@ -658,7 +663,7 @@
 msgid "section number"
 msgstr "Abschnittnummer"
 
-#: cweav-i18n.ch:403
+#: cweav-i18n.ch:409
 msgid "sorting"
 msgstr "Sortieren"
 
@@ -666,19 +671,19 @@
 msgid "stack"
 msgstr "Stack"
 
-#: cweav-twill.ch:561
+#: cweav-twill.ch:1057
 msgid "temp meanings"
 msgstr "Temporäre Bedeutung"
 
-#: ctang-i18n.ch:211 cweav-i18n.ch:223
+#: ctang-i18n.ch:207 cweav-i18n.ch:223
 msgid "text"
 msgstr "Text"
 
-#: cweav-twill.ch:308
+#: cweav-twill.ch:1371
 msgid "titles"
 msgstr "Titel"
 
-#: ctang-i18n.ch:25 ctang-i18n.ch:203 cweav-i18n.ch:175 cweav-i18n.ch:217
+#: ctang-i18n.ch:25 ctang-i18n.ch:197 cweav-i18n.ch:175 cweav-i18n.ch:217
 #: cweav-i18n.ch:231
 msgid "token"
 msgstr "Token"

Modified: branches/stable/source/src/texk/web2c/cwebdir/po/de/web2c-help.po
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/po/de/web2c-help.po	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/po/de/web2c-help.po	2025-05-17 22:44:20 UTC (rev 964)
@@ -7,8 +7,8 @@
 msgstr ""
 "Project-Id-Version: CWEBbin 2025\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2025-01-01 15:08+0100\n"
-"PO-Revision-Date: 2025-01-01 15:08+0100\n"
+"POT-Creation-Date: 2025-04-30 10:05+0200\n"
+"PO-Revision-Date: 2025-04-30 10:05+0200\n"
 "Last-Translator: Andreas Scherer <andreas_github at freenet.de>\n"
 "Language-Team: German\n"
 "Language: de\n"
@@ -56,12 +56,12 @@
 msgstr "+p          schreibe die Fortschrittsmeldungen"
 
 #: help.h:62 help.h:85 help.h:114
-msgid "+/-q        shortcut for '-bhp'; also '--quiet' (default)"
-msgstr "+/-q        Kurzform für '-bhp'; auch '--quiet' (Vorgabe)"
+msgid "+/-q        shortcut for '-bhp'; also '--quiet'"
+msgstr "+/-q        Kurzform für '-bhp'; auch '--quiet'"
 
 #: help.h:63 help.h:86 help.h:115
-msgid "+/-v        shortcut for '+bhp'; also '--verbose'"
-msgstr "+/-v        Kurzform für '+bhp'; auch '--verbose'"
+msgid "+/-v        shortcut for '+bhp'; also '--verbose' (default)"
+msgstr "+/-v        Kurzform für '+bhp'; auch '--verbose' (Vorgabe)"
 
 #: help.h:64 help.h:87 help.h:116
 msgid "+c          check temporary output for changes"

Modified: branches/stable/source/src/texk/web2c/cwebdir/po/it/cweb.po
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/po/it/cweb.po	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/po/it/cweb.po	2025-05-17 22:44:20 UTC (rev 964)
@@ -7,7 +7,7 @@
 msgstr ""
 "Project-Id-Version: CWEBbin 2025\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2025-01-01 15:08+0100\n"
+"POT-Creation-Date: 2025-03-12 11:51+0100\n"
 "PO-Revision-Date: 2025-01-01 15:08+0100\n"
 "Last-Translator: Andreas Scherer <andreas_github at freenet.de>\n"
 "Language-Team: Italian\n"
@@ -17,7 +17,7 @@
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
-#: comm-i18n.ch:182
+#: comm-i18n.ch:176
 msgid ""
 "\n"
 "! Ambiguous prefix: matches <"
@@ -41,7 +41,7 @@
 "\n"
 "! Codice di controllo illegale nella sezione: <"
 
-#: cweav-i18n.ch:157
+#: cweav-i18n.ch:159
 #, c-format
 msgid ""
 "\n"
@@ -50,7 +50,7 @@
 "\n"
 "! La linea deve essere spezzata (output l. %d):\n"
 
-#: cweav-i18n.ch:141
+#: cweav-i18n.ch:142
 msgid ""
 "\n"
 "! Never defined: <"
@@ -58,7 +58,7 @@
 "\n"
 "! Mai definito: <"
 
-#: cweav-i18n.ch:148
+#: cweav-i18n.ch:150
 msgid ""
 "\n"
 "! Never used: <"
@@ -66,7 +66,7 @@
 "\n"
 "! Mai usato: <"
 
-#: comm-i18n.ch:202
+#: comm-i18n.ch:196
 msgid ""
 "\n"
 "! New name extends <"
@@ -74,7 +74,7 @@
 "\n"
 "! Il nuovo nome estende <"
 
-#: comm-i18n.ch:196
+#: comm-i18n.ch:190
 msgid ""
 "\n"
 "! New name is a prefix of <"
@@ -98,7 +98,7 @@
 "\n"
 "! Non presente: <"
 
-#: comm-i18n.ch:208
+#: comm-i18n.ch:202
 msgid ""
 "\n"
 "! Section name incompatible with <"
@@ -106,7 +106,7 @@
 "\n"
 "! Nome sezione incompatibile con <"
 
-#: ctang-i18n.ch:167 cweav-i18n.ch:67
+#: ctang-i18n.ch:163 cweav-i18n.ch:67
 msgid ""
 "\n"
 "! Section name too long: "
@@ -114,7 +114,7 @@
 "\n"
 "! Nome sezione troppo lungo: "
 
-#: comm-i18n.ch:254
+#: comm-i18n.ch:252
 #, c-format
 msgid ""
 "\n"
@@ -123,7 +123,7 @@
 "\n"
 "! Spiacente, %s capacità superata"
 
-#: ctang-i18n.ch:125 cweav-i18n.ch:45
+#: ctang-i18n.ch:121 cweav-i18n.ch:45
 msgid ""
 "\n"
 "! String too long: "
@@ -140,7 +140,7 @@
 "\n"
 "Sequenza scrap irriducibile nella sezione %d:"
 
-#: ctang-i18n.ch:292 cweav-i18n.ch:431
+#: ctang-i18n.ch:298 cweav-i18n.ch:436
 msgid ""
 "\n"
 "Memory usage statistics:"
@@ -157,7 +157,7 @@
 "\n"
 "Tracing dopo l. %d:\n"
 
-#: cweav-i18n.ch:377
+#: cweav-i18n.ch:383
 msgid ""
 "\n"
 "Writing the index..."
@@ -165,7 +165,7 @@
 "\n"
 "Scrittura dell'indice..."
 
-#: ctang-i18n.ch:63
+#: ctang-i18n.ch:64
 #, c-format
 msgid ""
 "\n"
@@ -182,64 +182,66 @@
 "\n"
 "Scrittura file di output..."
 
-#: ctang-i18n.ch:69
+#: ctang-i18n.ch:65
+#, c-format
 msgid ""
 "\n"
-"Writing the output files:"
+"Writing the output files: (%s)"
 msgstr ""
 "\n"
-"Scrittura dei file di output:"
+"Scrittura dei file di output: (%s)"
 
-#: ctang-i18n.ch:217
+#: ctang-i18n.ch:221
 msgid "! @d, @f and @c are ignored in C text"
 msgstr "! @d, @f e @c sono ignorati nella parte C"
 
-#: comm-i18n.ch:60
+#: comm-i18n.ch:56
 msgid "! CWEB file ended during a change"
 msgstr "! File CWEB terminato durante un change"
 
-#: cweav-twill.ch:1033
+#: cweav-twill.ch:1243
 msgid "! Cannot open aux output file "
 msgstr "! Non posso aprire il file di aux output "
 
-#: comm-i18n.ch:88
+#: comm-i18n.ch:134
 msgid "! Cannot open change file "
 msgstr "! Non posso aprire il change file "
 
-#: comm-i18n.ch:118
+#: comm-i18n.ch:98
 msgid "! Cannot open include file"
 msgstr "! Non posso aprire il file include"
 
-#: cweav-i18n.ch:383
+#: cweav-i18n.ch:389
 msgid "! Cannot open index file "
 msgstr "! Non posso aprire il file per l'indice "
 
-#: comm-i18n.ch:82
+#: comm-i18n.ch:128
 msgid "! Cannot open input file "
 msgstr "! Non posso aprire il file di input "
 
-#: comm-i18n.ch:300 comm-i18n.ch:308 ctang-i18n.ch:83 ctang-i18n.ch:307
-#: cweav-i18n.ch:457
+#: comm-i18n.ch:304 comm-i18n.ch:310 comm-i18n.ch:324 comm-i18n.ch:330
+#: comm-i18n.ch:336 comm-i18n.ch:342 ctang-i18n.ch:79 ctang-i18n.ch:313
+#: ctang-i18n.ch:319 ctang-i18n.ch:325 ctang-i18n.ch:331 cweav-i18n.ch:461
 msgid "! Cannot open output file "
 msgstr "! Non posso aprire il file di output "
 
-#: cweav-i18n.ch:389
+#: cweav-i18n.ch:395
 msgid "! Cannot open section file "
 msgstr "! Non posso aprire il section file "
 
-#: comm-i18n.ch:46
+#: comm-i18n.ch:42
 msgid "! Change file ended after @x"
 msgstr "! Change file terminato dopo @x"
 
-#: comm-i18n.ch:54
+#: comm-i18n.ch:50
 msgid "! Change file ended before @y"
 msgstr "! Change file terminato prima di @y"
 
-#: comm-i18n.ch:126
+#: comm-i18n.ch:106
 msgid "! Change file ended without @z"
 msgstr "! Change file terminato senza un @z"
 
-#: comm-i18n.ch:140
+#: comm-i18n.ch:120
 msgid "! Change file entry did not match"
 msgstr "! C'è una voce nel change file che non corrisponde"
 
@@ -249,30 +251,29 @@
 
 #: cweav-i18n.ch:81
 msgid "! Control codes are forbidden in section name"
-msgstr ""
-"! I codici di controllo sono vietati all'interno dei nomi delle sezioni"
+msgstr "! I codici di controllo sono vietati all'interno dei nomi delle sezioni"
 
 #: cweav-i18n.ch:89
 msgid "! Control text didn't end"
 msgstr "! Control text non terminato"
 
-#: ctang-i18n.ch:249
+#: ctang-i18n.ch:253
 msgid "! Definition flushed, must start with identifier"
 msgstr "! Definizione liberata (flushed), iniziare con un identificatore"
 
-#: ctang-i18n.ch:147
+#: ctang-i18n.ch:143
 msgid "! Double @ should be used in ASCII constant"
 msgstr "! I doppi @ dovrebbero essere usati nelle costanti ASCII"
 
-#: ctang-i18n.ch:139 ctang-i18n.ch:257
+#: ctang-i18n.ch:135 ctang-i18n.ch:261
 msgid "! Double @ should be used in control text"
 msgstr "! I doppi @ dovrebbero essere usati nel \"control text\""
 
-#: ctang-i18n.ch:263 cweav-i18n.ch:165
+#: ctang-i18n.ch:269 cweav-i18n.ch:167 cweav-twill.ch:364 cweav-twill.ch:367
 msgid "! Double @ should be used in limbo"
 msgstr "! I doppi @ dovrebbero essere usati nel limbo"
 
-#: ctang-i18n.ch:233
+#: ctang-i18n.ch:237
 msgid "! Double @ should be used in string"
 msgstr "! I doppi @ dovrebbero essere usati nelle stringhe"
 
@@ -284,11 +285,11 @@
 msgid "! Extra } in comment"
 msgstr "! Extra } nel commento"
 
-#: comm-i18n.ch:300
+#: comm-i18n.ch:296
 msgid "! Filename too long\n"
 msgstr "! Nome file troppo lungo\n"
 
-#: cweav-twill.ch:550
+#: cweav-twill.ch:1024
 msgid "! Identifier in meaning should be followed by space"
 msgstr "! Identifier in meaning should be followed by space"
 
@@ -296,51 +297,51 @@
 msgid "! Illegal use of @ in comment"
 msgstr "! Uso illegale di @ nel commento"
 
-#: cweav-i18n.ch:353
+#: cweav-i18n.ch:359
 msgid "! Improper format definition"
 msgstr "! Definizione di formato impropria"
 
-#: ctang-i18n.ch:271
+#: ctang-i18n.ch:277
 msgid "! Improper hex number following @l"
 msgstr "! Un numero decimale improprio segue @l"
 
-#: cweav-i18n.ch:339 cweav-i18n.ch:345
+#: cweav-i18n.ch:343 cweav-i18n.ch:351
 msgid "! Improper macro definition"
 msgstr "! Definizione di macro impropria"
 
-#: comm-i18n.ch:96
+#: comm-i18n.ch:78
 msgid "! Include file name not given"
 msgstr "! Nome del file include assente"
 
-#: comm-i18n.ch:110
+#: comm-i18n.ch:92
 msgid "! Include file name too long"
 msgstr "! Nome file include troppo lungo"
 
-#: comm-i18n.ch:320
+#: comm-i18n.ch:316
 msgid "! Include path too long"
 msgstr "! Path include troppo lungo"
 
-#: ctang-i18n.ch:99 cweav-i18n.ch:181
+#: ctang-i18n.ch:95 cweav-i18n.ch:181
 msgid "! Input ended in mid-comment"
 msgstr "! Input terminato nel commento intermedio"
 
-#: ctang-i18n.ch:119 cweav-i18n.ch:39
+#: ctang-i18n.ch:115 cweav-i18n.ch:39
 msgid "! Input ended in middle of string"
 msgstr "! Input terminato nel mezzo di una stringa"
 
-#: ctang-i18n.ch:161 cweav-i18n.ch:61
+#: ctang-i18n.ch:157 cweav-i18n.ch:61
 msgid "! Input ended in section name"
 msgstr "! Input terminato all'interno del nome di una sezione"
 
-#: comm-i18n.ch:30
+#: comm-i18n.ch:26
 msgid "! Input line too long"
 msgstr "! Linea in input troppo lunga"
 
-#: cweav-twill.ch:550
+#: cweav-twill.ch:1032
 msgid "! Location in meaning should be followed by space"
 msgstr "! Location in meaning should be followed by space"
 
-#: ctang-i18n.ch:211
+#: ctang-i18n.ch:215
 msgid "! Misplaced @h"
 msgstr "! Mal riposto @h"
 
@@ -348,11 +349,11 @@
 msgid "! Missing '|' after C text"
 msgstr "! Omesso `|' dopo il testo in C"
 
-#: comm-i18n.ch:38
+#: comm-i18n.ch:34
 msgid "! Missing @x in change file"
 msgstr "! Omesso @x nel change file"
 
-#: ctang-i18n.ch:225
+#: ctang-i18n.ch:229
 msgid "! Missing `@ ' before a named section"
 msgstr "! Omesso `@ ' prima di una sezione con nome"
 
@@ -368,27 +369,27 @@
 msgid "! Missing } in comment"
 msgstr "! Omesso } nel commento"
 
-#: ctang-i18n.ch:181
+#: ctang-i18n.ch:177
 msgid "! Nesting of section names not allowed"
 msgstr "! Nomi di sezioni l'uno dentro l'altro non consentiti"
 
-#: cweav-twill.ch:1029
+#: cweav-twill.ch:1239
 msgid "! Only @$ is allowed in aux and bux files"
 msgstr "! Only @$ is allowed in aux and bux files"
 
-#: ctang-i18n.ch:277
+#: ctang-i18n.ch:283
 msgid "! Replacement string in @l too long"
 msgstr "! Stringa sostitutiva in @l troppo lunga"
 
-#: ctang-i18n.ch:175 cweav-i18n.ch:75
+#: ctang-i18n.ch:171 cweav-i18n.ch:75
 msgid "! Section name didn't end"
 msgstr "! Nome sezione non terminato"
 
-#: ctang-i18n.ch:99
+#: ctang-i18n.ch:101
 msgid "! Section name ended in mid-comment"
 msgstr "! Nome sezione terminato all'interno del commento intermedio"
 
-#: ctang-i18n.ch:113 ctang-i18n.ch:153 cweav-i18n.ch:33
+#: ctang-i18n.ch:109 ctang-i18n.ch:149 cweav-i18n.ch:33
 msgid "! String didn't end"
 msgstr "! Stringa non terminata"
 
@@ -396,27 +397,27 @@
 msgid "! TeX string should be in C text only"
 msgstr "! Stringa TeX dovrebbe stare solo nel testo in C"
 
-#: comm-i18n.ch:262 comm-i18n.hch:33
+#: comm-i18n.hch:56
 msgid "! This can't happen: "
 msgstr "! Questo non può avvenire: "
 
-#: cweav-twill.ch:316
+#: cweav-twill.ch:1370
 msgid "! Title name didn't end"
 msgstr "! Nome titolo non terminato"
 
-#: cweav-twill.ch:314
+#: cweav-twill.ch:1368
 msgid "! Title should be enclosed in braces or doublequotes"
 msgstr "! Title should be enclosed in braces or doublequotes"
 
-#: comm-i18n.ch:102
+#: comm-i18n.ch:84
 msgid "! Too many nested includes"
 msgstr "! Troppi include annidati"
 
-#: ctang-i18n.ch:241
+#: ctang-i18n.ch:245
 msgid "! Unrecognized escape sequence"
 msgstr "! Sequenza di escape non riconosciuta"
 
-#: comm-i18n.ch:283
+#: comm-i18n.ch:276
 msgid ""
 "! Usage: ctangle [options] webfile[.w] [{changefile[.ch]|-} [outfile[.c]]]\n"
 msgstr ""
@@ -428,11 +429,11 @@
 "s [-] mostra statistiche\n"
 "t [+] compare temporary output for changes\n"
 
-#: comm-i18n.ch:287
+#: comm-i18n.ch:285
 msgid ""
-"! Usage: cweave [options] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
+"! Usage: ctwill [options] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
 msgstr ""
-"! Uso: cweave [Opzioni] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
+"! Uso: ctwill [Opzioni] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
 "Opzioni (+ attiva, - disattiva, default indicato tra parentesi quadre):\n"
 "b [+] stampa una riga di titoli\n"
 "h [+] stampa un messaggio di \"buon fine\"\n"
@@ -442,15 +443,16 @@
 "i [+] rientranza delle dichiarazioni\n"
 "o [+] separa dichiarazioni e statement\n"
 "x [+] include indici\n"
-"lX [] usa macro in lingua X contenute in Xcwebmac.tex\n"
+"P [-] include 'proofmac.tex' invece di 'ctwimac.tex'\n"
+"lX [] usa macro in lingua X contenute in X{ctwi|proof}mac.tex\n"
 "s [-] mostra statistiche\n"
 "t [+] compare temporary output for changes\n"
 
-#: comm-i18n.ch:290
+#: comm-i18n.ch:281
 msgid ""
-"! Usage: ctwill [options] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
+"! Usage: cweave [options] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
 msgstr ""
-"! Uso: ctwill [Opzioni] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
+"! Uso: cweave [Opzioni] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
 "Opzioni (+ attiva, - disattiva, default indicato tra parentesi quadre):\n"
 "b [+] stampa una riga di titoli\n"
 "h [+] stampa un messaggio di \"buon fine\"\n"
@@ -460,116 +462,124 @@
 "i [+] rientranza delle dichiarazioni\n"
 "o [+] separa dichiarazioni e statement\n"
 "x [+] include indici\n"
-"P [-] include 'proofmac.tex' invece di 'ctwimac.tex'\n"
-"lX [] usa macro in lingua X contenute in X{ctwi|proof}mac.tex\n"
+"lX [] usa macro in lingua X contenute in Xcwebmac.tex\n"
 "s [-] mostra statistiche\n"
 "t [+] compare temporary output for changes\n"
 
-#: ctang-i18n.ch:131 cweav-i18n.ch:53 cweav-i18n.ch:119
+#: ctang-i18n.ch:129 cweav-i18n.ch:53 cweav-i18n.ch:119
 msgid "! Use @l in limbo only"
 msgstr "! Usare @l solo nel limbo"
 
-#: ctang-i18n.ch:189 cweav-i18n.ch:103
+#: ctang-i18n.ch:185 cweav-i18n.ch:103
 msgid "! Verbatim string didn't end"
 msgstr "! Stringa verbatim non terminata"
 
-#: comm-i18n.ch:68
+#: cweav-i18n.ch:330
+msgid "! Verbatim string should be in C text only"
+msgstr "! Stringa verbatim dovrebbe stare solo nel testo in C"
+
+#: comm-i18n.ch:64
 msgid "! Where is the matching @y?"
 msgstr "! Dov'è il corrispondente @y?"
 
-#: comm-i18n.ch:132
+#: comm-i18n.ch:112
 msgid "! Where is the matching @z?"
 msgstr "! Dov'è il corrispondente @z?"
 
-#: cweav-i18n.ch:369
+#: cweav-i18n.ch:375
 msgid "! You can't do that in C text"
 msgstr "! Non puoi fare quello nella parte in C"
 
-#: cweav-i18n.ch:331
+#: cweav-i18n.ch:335
 msgid "! You can't do that in TeX text"
 msgstr "! Non puoi fare quello nel testo in TeX"
 
-#: cweav-i18n.ch:361
+#: cweav-i18n.ch:367
 msgid "! You need an = sign after the section name"
 msgstr "! È necessario un segno di = dopo il nome della sezione"
 
-#: ctang-i18n.ch:297 cweav-i18n.ch:437
+#: ctang-i18n.ch:303 cweav-i18n.ch:442 cweav-twill.ch:754 cweav-twill.ch:757
 #, c-format
-msgid "%ld bytes (out of %ld)\n"
-msgstr "%ld byte (fuori da %ld)\n"
+msgid "%td bytes (out of %ld)\n"
+msgstr "%td byte (fuori da %ld)\n"
 
-#: cweav-i18n.ch:435
+#: cweav-i18n.ch:440
 #, c-format
-msgid "%ld cross-references (out of %ld)\n"
-msgstr "%ld riferimenti incrociati (fuori da %ld)\n"
+msgid "%td cross-references (out of %ld)\n"
+msgstr "%td riferimenti incrociati (fuori da %ld)\n"
 
-#: cweav-i18n.ch:446 cweav-i18n.ch:449
+#: cweav-i18n.ch:451 cweav-i18n.ch:454
 #, c-format
-msgid "%ld levels (out of %ld)\n"
-msgstr "%ld livelli (fuori da %ld)\n"
+msgid "%td levels (out of %ld)\n"
+msgstr "%td livelli (fuori da %ld)\n"
 
-#: ctang-i18n.ch:293 cweav-i18n.ch:433
+#: ctang-i18n.ch:299 cweav-i18n.ch:438
 #, c-format
-msgid "%ld names (out of %ld)\n"
-msgstr "%ld nomi (fuori da %ld)\n"
+msgid "%td names (out of %ld)\n"
+msgstr "%td nomi (fuori da %ld)\n"
 
-#: ctang-i18n.ch:295
+#: ctang-i18n.ch:301
 #, c-format
-msgid "%ld replacement texts (out of %ld)\n"
-msgstr "%ld replacement text (fuori da %ld)\n"
+msgid "%td replacement texts (out of %ld)\n"
+msgstr "%td replacement text (fuori da %ld)\n"
 
-#: cweav-i18n.ch:440
+#: cweav-i18n.ch:445
 #, c-format
-msgid "%ld scraps (out of %ld)\n"
-msgstr "%ld scrap (fuori da %ld)\n"
+msgid "%td scraps (out of %ld)\n"
+msgstr "%td scrap (fuori da %ld)\n"
 
-#: cweav-twill.ch:1346
+#: cweav-twill.ch:759
 #, c-format
-msgid "%ld temp meanings (out of %ld)\n"
-msgstr "%ld temp meanings (fuori da %ld)\n"
+msgid "%td temp meanings (out of %ld)\n"
+msgstr "%td temp meanings (fuori da %ld)\n"
 
-#: cweav-i18n.ch:442
+#: cweav-i18n.ch:447
 #, c-format
-msgid "%ld texts (out of %ld)\n"
-msgstr "%ld text (fuori da %ld)\n"
+msgid "%td texts (out of %ld)\n"
+msgstr "%td text (fuori da %ld)\n"
 
-#: ctang-i18n.ch:299 cweav-i18n.ch:444
+#: cweav-twill.ch:762
 #, c-format
-msgid "%ld tokens (out of %ld)\n"
-msgstr "%ld token (fuori da %ld)\n"
+msgid "%td titles (out of %ld)\n"
+msgstr "%td byte (fuori da %ld)\n"
 
-#: comm-i18n.ch:242
+#: ctang-i18n.ch:305 cweav-i18n.ch:449
+#, c-format
+msgid "%td tokens (out of %ld)\n"
+msgstr "%td token (fuori da %ld)\n"
+
+#: comm-i18n.ch:240
 msgid "(Did you see the warning message above?)"
 msgstr "(Hai visto i messaggi di warning sopra?)"
 
-#: comm-i18n.ch:240
+#: comm-i18n.ch:238
 msgid "(No errors were found.)"
 msgstr "(Nessun errore trovato.)"
 
-#: comm-i18n.ch:244
+#: comm-i18n.ch:242
 msgid "(Pardon me, but I think I spotted something wrong.)"
 msgstr "(Scusa, ma credo che sia avvenuto qualcosa di errato.)"
 
-#: comm-i18n.ch:246
+#: comm-i18n.ch:244
 msgid "(That was a fatal error, my friend.)"
 msgstr "(Caro amico, si è verificato un errore importante.)"
 
-#: comm-i18n.ch:224
+#: comm-i18n.ch:219
 #, c-format
 msgid ". (l. %d of change file)\n"
 msgstr ". (l. %d del change file)\n"
 
-#: comm-i18n.ch:226
+#: comm-i18n.ch:222
 #, c-format
 msgid ". (l. %d of include file %s)\n"
 msgstr ". (l. %d del file include %s)\n"
 
-#: comm-i18n.ch:225
+#: comm-i18n.ch:221
 #, c-format
 msgid ". (l. %d)\n"
 msgstr ". (l. %d)\n"
 
-#: comm-i18n.ch:188
+#: comm-i18n.ch:182
 msgid ""
 ">\n"
 " and <"
@@ -577,7 +587,7 @@
 ">\n"
 " e <"
 
-#: comm-i18n.ch:214
+#: comm-i18n.ch:208
 msgid ""
 ">,\n"
 " which abbreviates <"
@@ -585,15 +595,15 @@
 ">,\n"
 " che abbrevia <"
 
-#: ctang-i18n.ch:75 cweav-i18n.ch:395
+#: ctang-i18n.ch:71 cweav-i18n.ch:401
 msgid "Done."
 msgstr "Fatto."
 
-#: cweav-i18n.ch:439
+#: cweav-i18n.ch:444
 msgid "Parsing:"
 msgstr "Analisi:"
 
-#: cweav-i18n.ch:448
+#: cweav-i18n.ch:453
 msgid "Sorting:"
 msgstr "Ordinamento:"
 
@@ -601,19 +611,19 @@
 msgid "This is CTANGLE (Version 4.12.1 [CWEBbin 2025])"
 msgstr "Questo è CTANGLE (Versione 4.12.1 [CWEBbin 2025])"
 
-#: cweav-i18n.ch:17
+#: cweav-twill.ch:93
+msgid "This is CTWILL (Version 4.12.1 [CWEBbin 2025])"
+msgstr "Questo è CTWILL (Versione 4.12.1 [CWEBbin 2025])"
+
+#: cweav-i18n.ch:17 cweav-twill.ch:69
 msgid "This is CWEAVE (Version 4.12.1 [CWEBbin 2025])"
 msgstr "Questo è CWEAVE (Versione 4.12.1 [CWEBbin 2025])"
 
-#: cweav-twill.ch:68
-msgid "This is CTWILL (Version 4.12.1 [CWEBbin 2025])"
-msgstr "Questo è CTWILL (Versione 4.12.1 [CWEBbin 2025])"
-
 #: cweav-i18n.ch:301 cweav-i18n.ch:309
 msgid "buffer"
 msgstr "buffer"
 
-#: comm-i18n.ch:149 comm-i18n.ch:159 comm-i18n.ch:174
+#: comm-i18n.ch:143 comm-i18n.ch:153 comm-i18n.ch:168
 msgid "byte memory"
 msgstr "byte di memoria"
 
@@ -621,23 +631,23 @@
 msgid "cross-reference"
 msgstr "referimento incrociato"
 
-#: cweav-twill.ch:822
+#: cweav-twill.ch:1161
 msgid "find type"
 msgstr "find type"
 
-#: cweav-twill.ch:761
+#: cweav-twill.ch:1096
 msgid "inner"
 msgstr "inner"
 
-#: ctang-i18n.ch:91
+#: ctang-i18n.ch:87
 msgid "macro defs have strange char"
 msgstr "definizione macro contiene uno strano carattere"
 
-#: comm-i18n.ch:150 comm-i18n.ch:160 comm-i18n.ch:168
+#: comm-i18n.ch:144 comm-i18n.ch:154 comm-i18n.ch:162
 msgid "name"
 msgstr "nome"
 
-#: comm-i18n.ch:74
+#: comm-i18n.ch:70
 msgid "of the preceding lines failed to match"
 msgstr "delle linee precedenti, corrispondenza non trovata"
 
@@ -653,7 +663,7 @@
 msgid "section number"
 msgstr "numero sezione"
 
-#: cweav-i18n.ch:403
+#: cweav-i18n.ch:409
 msgid "sorting"
 msgstr "ordinamento"
 
@@ -661,19 +671,19 @@
 msgid "stack"
 msgstr "stack"
 
-#: cweav-twill.ch:570
+#: cweav-twill.ch:1057
 msgid "temp meanings"
 msgstr "temp meanings"
 
-#: ctang-i18n.ch:203 cweav-i18n.ch:223
+#: ctang-i18n.ch:207 cweav-i18n.ch:223
 msgid "text"
 msgstr "text"
 
-#: cweav-twill.ch:317
+#: cweav-twill.ch:1371
 msgid "titles"
 msgstr "titles"
 
-#: ctang-i18n.ch:25 ctang-i18n.ch:197 cweav-i18n.ch:173 cweav-i18n.ch:217
+#: ctang-i18n.ch:25 ctang-i18n.ch:197 cweav-i18n.ch:175 cweav-i18n.ch:217
 #: cweav-i18n.ch:231
 msgid "token"
 msgstr "token"

Modified: branches/stable/source/src/texk/web2c/cwebdir/po/web2c-help.pot
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/po/web2c-help.pot	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/po/web2c-help.pot	2025-05-17 22:44:20 UTC (rev 964)
@@ -8,7 +8,7 @@
 msgstr ""
 "Project-Id-Version: CWEBbin 2025\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2025-01-01 15:08+0100\n"
+"POT-Creation-Date: 2025-04-30 10:05+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL at ADDRESS>\n"
 "Language-Team: LANGUAGE <LL at li.org>\n"
@@ -55,11 +55,11 @@
 msgstr ""
 
 #: help.h:62 help.h:85 help.h:114
-msgid "+/-q        shortcut for '-bhp'; also '--quiet' (default)"
+msgid "+/-q        shortcut for '-bhp'; also '--quiet'"
 msgstr ""
 
 #: help.h:63 help.h:86 help.h:115
-msgid "+/-v        shortcut for '+bhp'; also '--verbose'"
+msgid "+/-v        shortcut for '+bhp'; also '--verbose' (default)"
 msgstr ""
 
 #: help.h:64 help.h:87 help.h:116

Modified: branches/stable/source/src/texk/web2c/cwebdir/tests/ham-sorted.tex
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/tests/ham-sorted.tex	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/tests/ham-sorted.tex	2025-05-17 22:44:20 UTC (rev 964)
@@ -12,7 +12,7 @@
 and Tools\/ \bf15} (1994), 2--11.] The input graph should be in
 Stanford GraphBase format, and should be named on the command line
 as, for example, \.{foo.gb}. An optional second command-line parameter
-is a modulus \PB{\|m}, which causes every $m$th solution to be printed.
+is a modulus~$m$, which causes every $m$th solution to be printed.
 
 We use a utility field to record the vertex degrees.
 
@@ -65,7 +65,6 @@
 \]{GB\_\,GRAPH}9 \\{arcs} \&{Arc} ${}{*}{}$
 \]{GB\_\,GRAPH}20 \&{Graph} =\&{struct}
 \]{GB\_\,GRAPH}8 \|{I} \&{long}
-\]{GB\_\,GRAPH}20 \|{m} \&{long}
 \]{GB\_\,GRAPH}20 \|{n} \&{long}
 \]{GB\_\,GRAPH}9 \\{name} \&{char} ${}{*}{}$
 \]{GB\_\,GRAPH}10 \\{next} \&{Arc} ${}{*}{}$

Modified: branches/stable/source/src/texk/web2c/cwebdir/tests/ham.ch
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/tests/ham.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/tests/ham.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -10,6 +10,12 @@
 
 Section 1.
 
+ at x l.11
+is a modulus |m|, which causes every $m$th solution to be printed.
+ at y
+is a modulus~$m$, which causes every $m$th solution to be printed.
+ at z
+
 @x l.15
 @d deg u.I
 @y
@@ -23,7 +29,7 @@
 @x l.21
 main(int argc,char *argv[])
 @y
-@#@;@q Fix a bug in CWEB/CTWILL 4.3 @>
+@#
 int main(int argc,char *argv[])
 @z
 

Modified: branches/stable/source/src/texk/web2c/cwebdir/tests/ham.ref
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/tests/ham.ref	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/tests/ham.ref	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,4 @@
-!3
+!2
 + \]{GB\_\,GRAPH}9 \|{u} \&{util}
 + \]{GB\_\,GRAPH}10 \\{tip} \&{Vertex} ${}{*}{}$
 + \]{GB\_\,GRAPH}10 \\{next} \&{Arc} ${}{*}{}$
@@ -12,13 +12,12 @@
 + \]{GB\_\,GRAPH}20 \&{Graph} =\&{struct}
 + \]{GB\_\,SAVE}4 \\{restore\_graph} \&{Graph} ${}{*}(\,){}$
 + \]{GB\_\,GRAPH}8 \|{I} \&{long}
-+ \]{GB\_\,GRAPH}20 \|{m} \&{long}
 + \]"<stdlib.h>" \\{exit} \zip 
 + \]"<stdio.h>" \\{stderr} \zip 
 + \]"<stdio.h>" \\{fprintf} \zip 
 + \]"<stdio.h>" \\{sscanf} \zip 
 + \]{GB\_\,GRAPH}9 \|{v} \&{util}
-!5
+!4
 + \[1 \|{x} \&{register} \&{Vertex} ${}{*}{}$
 + \[1 \|{a} \&{register} \&{Arc} ${}{*}{}$
 + \[1 \|{z} \&{Vertex} ${}{*}{}$

Modified: branches/stable/source/src/texk/web2c/cwebdir/tests/ham.sref
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/tests/ham.sref	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/tests/ham.sref	2025-05-17 22:44:20 UTC (rev 964)
@@ -4,7 +4,6 @@
 \]"<stdio.h>" \\{fprintf} \zip 
 \]{GB\_\,GRAPH}20 \&{Graph} =\&{struct}
 \]{GB\_\,GRAPH}8 \|{I} \&{long}
-\]{GB\_\,GRAPH}20 \|{m} \&{long}
 \]{GB\_\,GRAPH}20 \|{n} \&{long}
 \]{GB\_\,GRAPH}9 \\{name} \&{char} ${}{*}{}$
 \]{GB\_\,GRAPH}10 \\{next} \&{Arc} ${}{*}{}$
@@ -17,7 +16,7 @@
 \]{GB\_\,GRAPH}9 \|{v} \&{util}
 \]{GB\_\,GRAPH}9 \&{Vertex} =\&{struct}
 \]{GB\_\,GRAPH}20 \\{vertices} \&{Vertex} ${}{*}{}$
-\donewithpage3
+\donewithpage2
 \[1 \|{a} \&{register} \&{Arc} ${}{*}{}$
 \]{GB\_\,GRAPH}8 \|{A} \&{Arc} ${}{*}{}$
 \[1 \\{aa} \&{register} \&{Arc} ${}{*}{}$
@@ -44,4 +43,4 @@
 \]{GB\_\,GRAPH}9 \|{x} \&{util}
 \[1 \|{y} \&{Vertex} ${}{*}{}$
 \[1 \|{z} \&{Vertex} ${}{*}{}$
-\donewithpage5
+\donewithpage4

Modified: branches/stable/source/src/texk/web2c/cwebdir/tests/ham.tex
===================================================================
--- branches/stable/source/src/texk/web2c/cwebdir/tests/ham.tex	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/cwebdir/tests/ham.tex	2025-05-17 22:44:20 UTC (rev 964)
@@ -12,7 +12,7 @@
 and Tools\/ \bf15} (1994), 2--11.] The input graph should be in
 Stanford GraphBase format, and should be named on the command line
 as, for example, \.{foo.gb}. An optional second command-line parameter
-is a modulus \PB{\|m}, which causes every $m$th solution to be printed.
+is a modulus~$m$, which causes every $m$th solution to be printed.
 
 We use a utility field to record the vertex degrees.
 
@@ -74,7 +74,6 @@
 \]{GB\_\,GRAPH}20 \&{Graph} =\&{struct}
 \]{GB\_\,SAVE}4 \\{restore\_graph} \&{Graph} ${}{*}(\,){}$
 \]{GB\_\,GRAPH}8 \|{I} \&{long}
-\]{GB\_\,GRAPH}20 \|{m} \&{long}
 }\FI
 
 \shortpage

Modified: branches/stable/source/src/texk/web2c/doc/luatex/luatex-math.tex
===================================================================
--- branches/stable/source/src/texk/web2c/doc/luatex/luatex-math.tex	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/doc/luatex/luatex-math.tex	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,4 @@
-% language=uk engine=luatex runpath=texruns:manuals/luatex
+% language=us engine=luatex runpath=texruns:manuals/luatex
 
 \environment luatex-style
 
@@ -773,182 +773,209 @@
 hacks that users came up with but when you set \lpr {matheqdirmode} to a positive
 value direction will be taken into account.
 
-\subsection {Nolimit correction}
+% \subsection {Nolimit correction}
+%
+% \topicindex {math+limits}
+%
+% There are two extra math parameters \lpr {Umathnolimitsupfactor} and \lpr
+% {Umathnolimitsubfactor} that were added to provide some control over how limits
+% are spaced (for example the position of super and subscripts after integral
+% operators). They relate to an extra parameter \lpr {mathnolimitsmode}. The half
+% corrections are what happens when scripts are placed above and below. The
+% problem with italic corrections is that officially that correction italic is used
+% for above|/|below placement while advanced kerns are used for placement at the
+% right end. The question is: how often is this implemented, and if so, do the
+% kerns assume correction too. Anyway, with this parameter one can control it.
 
-\topicindex {math+limits}
+% \starttabulate[|l|ck1|ck1|ck1|ck1|ck1|ck1|]
+%     \NC % probably not ok, we need a raw int here
+%         \NC \mathnolimitsmode0    $\displaystyle\mathop{\normalint}\nolimits^0_1$
+%         \NC \mathnolimitsmode1    $\displaystyle\mathop{\normalint}\nolimits^0_1$
+%         \NC \mathnolimitsmode2    $\displaystyle\mathop{\normalint}\nolimits^0_1$
+%         \NC \mathnolimitsmode3    $\displaystyle\mathop{\normalint}\nolimits^0_1$
+%         \NC \mathnolimitsmode4    $\displaystyle\mathop{\normalint}\nolimits^0_1$
+%         \NC \mathnolimitsmode8000 $\displaystyle\mathop{\normalint}\nolimits^0_1$
+%     \NC \NR
+%     \TB
+%     \BC mode
+%         \NC \tttf 0
+%         \NC \tttf 1
+%         \NC \tttf 2
+%         \NC \tttf 3
+%         \NC \tttf 4
+%         \NC \tttf 8000
+%     \NC \NR
+%     \BC superscript
+%         \NC 0
+%         \NC font
+%         \NC 0
+%         \NC 0
+%         \NC +ic/2
+%         \NC 0
+%     \NC \NR
+%     \BC subscript
+%         \NC -ic
+%         \NC font
+%         \NC 0
+%         \NC -ic/2
+%         \NC -ic/2
+%         \NC 8000ic/1000
+%     \NC \NR
+% \stoptabulate
+%
+% When the mode is set to one, the math parameters are used. This way a macro
+% package writer can decide what looks best. Given the current state of fonts in
+% \CONTEXT\ we currently use mode 1 with factor 0 for the superscript and 750 for
+% the subscripts. Positive values are used for both parameters but the subscript
+% shifts to the left. A \lpr {mathnolimitsmode} larger that 15 is considered to
+% be a factor for the subscript correction. This feature can be handy when
+% experimenting.
 
-There are two extra math parameters \lpr {Umathnolimitsupfactor} and \lpr
-{Umathnolimitsubfactor} that were added to provide some control over how limits
-are spaced (for example the position of super and subscripts after integral
-operators). They relate to an extra parameter \lpr {mathnolimitsmode}. The half
-corrections are what happens when scripts are placed above and below. The
-problem with italic corrections is that officially that correction italic is used
-for above|/|below placement while advanced kerns are used for placement at the
-right end. The question is: how often is this implemented, and if so, do the
-kerns assume correction too. Anyway, with this parameter one can control it.
+% \subsection {Math italic mess}
+%
+% \topicindex {math+italics}
+%
+% The \lpr {mathitalicsmode} parameter was introduced to deal with the difference
+% in applying italic correction in traditional and \OPENTYPE\ math fonts. There are
+% \OPENTYPE\ fonts out there that have italic correction and assume them to be
+% applied like traditional \TEX\ fonts. This parameter takes several values:
+%
+% When set to zero, you get what was decided when the two code paths (traditional
+% and \OPENTYPE) were introduced.
+%
+% Values larger than zero will add the italic correction between simple noads (it
+% checks some classes so you might pay attention to for instance punctuation
+% classes assigned).
+%
+% When set to zero or one, italics are independent, so we separate width from
+% italic, while values larger than one combine both in the width but later
+% selectively has to get rid of it (depending on code path).
+%
+% A value larger than two will backtrack italics for large operators, because there
+% italic correction is used for anchoring scripts (limits and no limits). In fact,
+% \OPENTYPE\ uses italics either between characters or for this purpose but as
+% mentioned fonts are sort of messy here.
+%
+% We tested our version of plain \TEX\ and recommend to use the value of three to
+% get the best average results. More about this italic correction dilemma in
+% rendering math can be found in articles (in for instance \TUGBOAT) and various
+% documents in the \CONTEXT\ distribution, especially those that discuss the
+% upgraded math engine in \LUAMETATEX.
+%
+% % The \lpr {mathitalicsmode} parameter can be set to~1 to force italic correction
+% % before noads that represent some more complex structure (read: everything that is
+% % not an ord, bin, rel, open, close, punct or inner). A value of~2 will enforce the
+% % old school font code path for all italics. We show a Cambria example.
+% %
+% % \starttexdefinition Whatever #1
+% %     \NC \type{\mathitalicsmode = #1}
+% %     \NC \mathitalicsmode#1\ruledhbox{$\left|T^1\right|$}
+% %     \NC \mathitalicsmode#1\ruledhbox{$\left|T\right|$}
+% %     \NC \mathitalicsmode#1\ruledhbox{$T+1$}
+% %     \NC \mathitalicsmode#1\ruledhbox{$T{1\over2}$}
+% %     \NC \mathitalicsmode#1\ruledhbox{$T\sqrt{1}$}
+% %     \NC \NR
+% % \stoptexdefinition
+% %
+% % \start
+% %     \switchtobodyfont[cambria]
+% %     \starttabulate[|c|c|c|c|c|c|]
+% %         \Whatever{0}%
+% %         \Whatever{1}%
+% %     \stoptabulate
+% % \stop
+% %
+% % This kind of parameters relate to the fact that italic correction in \OPENTYPE\
+% % math is bound to fuzzy rules. So, control is the solution.
 
-\starttabulate[|l|ck1|ck1|ck1|ck1|ck1|ck1|]
-    \NC % probably not ok, we need a raw int here
-        \NC \mathnolimitsmode0    $\displaystyle\mathop{\normalint}\nolimits^0_1$
-        \NC \mathnolimitsmode1    $\displaystyle\mathop{\normalint}\nolimits^0_1$
-        \NC \mathnolimitsmode2    $\displaystyle\mathop{\normalint}\nolimits^0_1$
-        \NC \mathnolimitsmode3    $\displaystyle\mathop{\normalint}\nolimits^0_1$
-        \NC \mathnolimitsmode4    $\displaystyle\mathop{\normalint}\nolimits^0_1$
-        \NC \mathnolimitsmode8000 $\displaystyle\mathop{\normalint}\nolimits^0_1$
-    \NC \NR
-    \TB
-    \BC mode
-        \NC \tttf 0
-        \NC \tttf 1
-        \NC \tttf 2
-        \NC \tttf 3
-        \NC \tttf 4
-        \NC \tttf 8000
-    \NC \NR
-    \BC superscript
-        \NC 0
-        \NC font
-        \NC 0
-        \NC 0
-        \NC +ic/2
-        \NC 0
-    \NC \NR
-    \BC subscript
-        \NC -ic
-        \NC font
-        \NC 0
-        \NC -ic/2
-        \NC -ic/2
-        \NC 8000ic/1000
-    \NC \NR
-\stoptabulate
+% \subsection {Script and kerning}
+%
+% \topicindex {math+kerning}
+% \topicindex {math+scripts}
+%
+% If you want to typeset text in math macro packages often provide something \type
+% {\text} which obeys the script sizes. As the definition can be anything there is
+% a good chance that the kerning doesn't come out well when used in a script. Given
+% that the first glyph ends up in a \prm {hbox} we have some control over this.
+% And, as a bonus we also added control over the normal sublist kerning. The \lpr
+% {mathscriptboxmode} parameter defaults to~1.
+%
+% \starttabulate[|c|l|]
+% \DB value     \BC meaning \NC \NR
+% \TB
+% \NC \type {0} \NC forget about kerning \NC \NR
+% \NC \type {1} \NC kern math sub lists with a valid glyph \NC \NR
+% \NC \type {2} \NC also kern math sub boxes that have a valid glyph \NC \NR
+% \NC \type {2} \NC only kern math sub boxes with a boundary node present\NC \NR
+% \LL
+% \stoptabulate
+%
+% Here we show some examples. Of course this doesn't solve all our problems, if
+% only because some fonts have characters with bounding boxes that compensate for
+% italics, while other fonts can lack kerns.
+%
+% \startbuffer[1]
+%     $T_{\tf fluff}$
+% \stopbuffer
+%
+% \startbuffer[2]
+%     $T_{\text{fluff}}$
+% \stopbuffer
+%
+% \startbuffer[3]
+%     $T_{\text{\boundary1 fluff}}$
+% \stopbuffer
+%
+% \unexpanded\def\Show#1#2#3%
+%   {\doifelsenothing{#3}
+%      {\small\tx\typeinlinebuffer[#1]}
+%      {\doifelse{#3}{-}
+%         {\small\bf\tt mode #2}
+%         {\switchtobodyfont[#3]\showfontkerns\showglyphs\mathscriptboxmode#2\relax\inlinebuffer[#1]}}}
+%
+% \starttabulate[|lBT|c|c|c|c|c|]
+%     \NC          \NC \Show{1}{0}{}         \NC\Show{1}{1}{}         \NC \Show{2}{1}{}         \NC \Show{2}{2}{}         \NC \Show{3}{3}{}         \NC \NR
+%     \NC          \NC \Show{1}{0}{-}        \NC\Show{1}{1}{-}        \NC \Show{2}{1}{-}        \NC \Show{2}{2}{-}        \NC \Show{3}{3}{-}        \NC \NR
+%     \NC modern   \NC \Show{1}{0}{modern}   \NC\Show{1}{1}{modern}   \NC \Show{2}{1}{modern}   \NC \Show{2}{2}{modern}   \NC \Show{3}{3}{modern}   \NC \NR
+%     \NC lucidaot \NC \Show{1}{0}{lucidaot} \NC\Show{1}{1}{lucidaot} \NC \Show{2}{1}{lucidaot} \NC \Show{2}{2}{lucidaot} \NC \Show{3}{3}{lucidaot} \NC \NR
+%     \NC pagella  \NC \Show{1}{0}{pagella}  \NC\Show{1}{1}{pagella}  \NC \Show{2}{1}{pagella}  \NC \Show{2}{2}{pagella}  \NC \Show{3}{3}{pagella}  \NC \NR
+%     \NC cambria  \NC \Show{1}{0}{cambria}  \NC\Show{1}{1}{cambria}  \NC \Show{2}{1}{cambria}  \NC \Show{2}{2}{cambria}  \NC \Show{3}{3}{cambria}  \NC \NR
+%     \NC dejavu   \NC \Show{1}{0}{dejavu}   \NC\Show{1}{1}{dejavu}   \NC \Show{2}{1}{dejavu}   \NC \Show{2}{2}{dejavu}   \NC \Show{3}{3}{dejavu}   \NC \NR
+% \stoptabulate
+%
+% % Kerning between a character subscript is controlled by \lpr {mathscriptcharmode}
+% % which also defaults to~1.
+%
+% Here is another example. Internally we tag kerns as italic kerns or font kerns
+% where font kerns result from the staircase kern tables. In 2018 fonts like Latin
+% Modern and Pagella rely on cheats with the boundingbox, Cambria uses staircase
+% kerns and Lucida a mixture. Depending on how fonts evolve we might add some more
+% control over what one can turn on and off.
+%
+% \def\MathSample#1#2#3%
+%   {\NC
+%    #1 \NC
+%    #2 \NC
+%    \showglyphdata \switchtobodyfont[#2,17.3pt]$#3T_{f}$         \NC
+%    \showglyphdata \switchtobodyfont[#2,17.3pt]$#3\gamma_{e}$    \NC
+%    \showglyphdata \switchtobodyfont[#2,17.3pt]$#3\gamma_{ee}$   \NC
+%    \showglyphdata \switchtobodyfont[#2,17.3pt]$#3T_{\tf fluff}$ \NC
+%    \NR}
+%
+% \starttabulate[|Tl|Tl|l|l|l|l|]
+%     \FL
+%     \MathSample{normal}{modern}  {\mr}
+%     \MathSample{}      {pagella} {\mr}
+%     \MathSample{}      {cambria} {\mr}
+%     \MathSample{}      {lucidaot}{\mr}
+%     \ML
+%     \MathSample{bold}  {modern}  {\mb}
+%     \MathSample{}      {pagella} {\mb}
+%     \MathSample{}      {cambria} {\mb}
+%     \MathSample{}      {lucidaot}{\mb}
+%     \LL
+% \stoptabulate
 
-When the mode is set to one, the math parameters are used. This way a macro
-package writer can decide what looks best. Given the current state of fonts in
-\CONTEXT\ we currently use mode 1 with factor 0 for the superscript and 750 for
-the subscripts. Positive values are used for both parameters but the subscript
-shifts to the left. A \lpr {mathnolimitsmode} larger that 15 is considered to
-be a factor for the subscript correction. This feature can be handy when
-experimenting.
-
-\subsection {Math italic mess}
-
-\topicindex {math+italics}
-
-The \lpr {mathitalicsmode} parameter can be set to~1 to force italic correction
-before noads that represent some more complex structure (read: everything that is
-not an ord, bin, rel, open, close, punct or inner). A value of~2 will enforce the
-old school font code path for all italics. We show a Cambria example.
-
-\starttexdefinition Whatever #1
-    \NC \type{\mathitalicsmode = #1}
-    \NC \mathitalicsmode#1\ruledhbox{$\left|T^1\right|$}
-    \NC \mathitalicsmode#1\ruledhbox{$\left|T\right|$}
-    \NC \mathitalicsmode#1\ruledhbox{$T+1$}
-    \NC \mathitalicsmode#1\ruledhbox{$T{1\over2}$}
-    \NC \mathitalicsmode#1\ruledhbox{$T\sqrt{1}$}
-    \NC \NR
-\stoptexdefinition
-
-\start
-    \switchtobodyfont[cambria]
-    \starttabulate[|c|c|c|c|c|c|]
-        \Whatever{0}%
-        \Whatever{1}%
-    \stoptabulate
-\stop
-
-This kind of parameters relate to the fact that italic correction in \OPENTYPE\
-math is bound to fuzzy rules. So, control is the solution.
-
-\subsection {Script and kerning}
-
-\topicindex {math+kerning}
-\topicindex {math+scripts}
-
-If you want to typeset text in math macro packages often provide something \type
-{\text} which obeys the script sizes. As the definition can be anything there is
-a good chance that the kerning doesn't come out well when used in a script. Given
-that the first glyph ends up in a \prm {hbox} we have some control over this.
-And, as a bonus we also added control over the normal sublist kerning. The \lpr
-{mathscriptboxmode} parameter defaults to~1.
-
-\starttabulate[|c|l|]
-\DB value     \BC meaning \NC \NR
-\TB
-\NC \type {0} \NC forget about kerning \NC \NR
-\NC \type {1} \NC kern math sub lists with a valid glyph \NC \NR
-\NC \type {2} \NC also kern math sub boxes that have a valid glyph \NC \NR
-\NC \type {2} \NC only kern math sub boxes with a boundary node present\NC \NR
-\LL
-\stoptabulate
-
-Here we show some examples. Of course this doesn't solve all our problems, if
-only because some fonts have characters with bounding boxes that compensate for
-italics, while other fonts can lack kerns.
-
-\startbuffer[1]
-    $T_{\tf fluff}$
-\stopbuffer
-
-\startbuffer[2]
-    $T_{\text{fluff}}$
-\stopbuffer
-
-\startbuffer[3]
-    $T_{\text{\boundary1 fluff}}$
-\stopbuffer
-
-\unexpanded\def\Show#1#2#3%
-  {\doifelsenothing{#3}
-     {\small\tx\typeinlinebuffer[#1]}
-     {\doifelse{#3}{-}
-        {\small\bf\tt mode #2}
-        {\switchtobodyfont[#3]\showfontkerns\showglyphs\mathscriptboxmode#2\relax\inlinebuffer[#1]}}}
-
-\starttabulate[|lBT|c|c|c|c|c|]
-    \NC          \NC \Show{1}{0}{}         \NC\Show{1}{1}{}         \NC \Show{2}{1}{}         \NC \Show{2}{2}{}         \NC \Show{3}{3}{}         \NC \NR
-    \NC          \NC \Show{1}{0}{-}        \NC\Show{1}{1}{-}        \NC \Show{2}{1}{-}        \NC \Show{2}{2}{-}        \NC \Show{3}{3}{-}        \NC \NR
-    \NC modern   \NC \Show{1}{0}{modern}   \NC\Show{1}{1}{modern}   \NC \Show{2}{1}{modern}   \NC \Show{2}{2}{modern}   \NC \Show{3}{3}{modern}   \NC \NR
-    \NC lucidaot \NC \Show{1}{0}{lucidaot} \NC\Show{1}{1}{lucidaot} \NC \Show{2}{1}{lucidaot} \NC \Show{2}{2}{lucidaot} \NC \Show{3}{3}{lucidaot} \NC \NR
-    \NC pagella  \NC \Show{1}{0}{pagella}  \NC\Show{1}{1}{pagella}  \NC \Show{2}{1}{pagella}  \NC \Show{2}{2}{pagella}  \NC \Show{3}{3}{pagella}  \NC \NR
-    \NC cambria  \NC \Show{1}{0}{cambria}  \NC\Show{1}{1}{cambria}  \NC \Show{2}{1}{cambria}  \NC \Show{2}{2}{cambria}  \NC \Show{3}{3}{cambria}  \NC \NR
-    \NC dejavu   \NC \Show{1}{0}{dejavu}   \NC\Show{1}{1}{dejavu}   \NC \Show{2}{1}{dejavu}   \NC \Show{2}{2}{dejavu}   \NC \Show{3}{3}{dejavu}   \NC \NR
-\stoptabulate
-
-Kerning between a character subscript is controlled by \lpr {mathscriptcharmode}
-which also defaults to~1.
-
-Here is another example. Internally we tag kerns as italic kerns or font kerns
-where font kerns result from the staircase kern tables. In 2018 fonts like Latin
-Modern and Pagella rely on cheats with the boundingbox, Cambria uses staircase
-kerns and Lucida a mixture. Depending on how fonts evolve we might add some more
-control over what one can turn on and off.
-
-\def\MathSample#1#2#3%
-  {\NC
-   #1 \NC
-   #2 \NC
-   \showglyphdata \switchtobodyfont[#2,17.3pt]$#3T_{f}$         \NC
-   \showglyphdata \switchtobodyfont[#2,17.3pt]$#3\gamma_{e}$    \NC
-   \showglyphdata \switchtobodyfont[#2,17.3pt]$#3\gamma_{ee}$   \NC
-   \showglyphdata \switchtobodyfont[#2,17.3pt]$#3T_{\tf fluff}$ \NC
-   \NR}
-
-\starttabulate[|Tl|Tl|l|l|l|l|]
-    \FL
-    \MathSample{normal}{modern}  {\mr}
-    \MathSample{}      {pagella} {\mr}
-    \MathSample{}      {cambria} {\mr}
-    \MathSample{}      {lucidaot}{\mr}
-    \ML
-    \MathSample{bold}  {modern}  {\mb}
-    \MathSample{}      {pagella} {\mb}
-    \MathSample{}      {cambria} {\mb}
-    \MathSample{}      {lucidaot}{\mb}
-    \LL
-\stoptabulate
-
 \subsection{Fixed scripts}
 
 We have three parameters that are used for this fixed anchoring:
@@ -1028,52 +1055,52 @@
 
 \startsection[title={Math constructs}]
 
-\subsection {Unscaled fences}
+% \subsection {Unscaled fences}
+%
+% \topicindex {math+fences}
+%
+% The \lpr {mathdelimitersmode} primitive is experimental and deals with the
+% following (potential) problems. Three bits can be set. The first bit prevents an
+% unwanted shift when the fence symbol is not scaled (a cambria side effect). The
+% second bit forces italic correction between a preceding character ordinal and the
+% fenced subformula, while the third bit turns that subformula into an ordinary so
+% that the same spacing applies as with unfenced variants. Here we show Cambria
+% (with \lpr {mathitalicsmode} enabled).
+%
+% \starttexdefinition Whatever #1
+%     \NC \type{\mathdelimitersmode = #1}
+%     \NC \mathitalicsmode1\mathdelimitersmode#1\ruledhbox{\showglyphs\showfontkerns\showfontitalics$f(x)$}
+%     \NC \mathitalicsmode1\mathdelimitersmode#1\ruledhbox{\showglyphs\showfontkerns\showfontitalics$f\left(x\right)$}
+%     \NC \NR
+% \stoptexdefinition
+%
+% \start
+%     \switchtobodyfont[cambria]
+%     \starttabulate[|l|l|l|]
+%         \Whatever{0}\Whatever{1}\Whatever{2}\Whatever{3}%
+%         \Whatever{4}\Whatever{5}\Whatever{6}\Whatever{7}%
+%     \stoptabulate
+% \stop
+%
+% So, when set to 7 fenced subformulas with unscaled delimiters come out the same
+% as unfenced ones. This can be handy for cases where one is forced to use \prm
+% {left} and \prm {right} always because of unpredictable content. As said, it's an
+% experimental feature (which somehow fits in the exceptional way fences are dealt
+% with in the engine). The full list of flags is given in the next table:
+%
+% \starttabulate[|c|l|]
+% \DB value  \BC meaning \NC \NR
+% \TB
+% \NC \type{"01} \NC don't apply the usual shift \NC \NR
+% \NC \type{"02} \NC apply italic correction when possible \NC \NR
+% \NC \type{"04} \NC force an ordinary subformula \NC \NR
+% \NC \type{"08} \NC no shift when a base character \NC \NR
+% \NC \type{"10} \NC only shift when an extensible \NC \NR
+% \LL
+% \stoptabulate
+%
+% The effect can depend on the font (and for Cambria one can use for instance \type {"16}).
 
-\topicindex {math+fences}
-
-The \lpr {mathdelimitersmode} primitive is experimental and deals with the
-following (potential) problems. Three bits can be set. The first bit prevents an
-unwanted shift when the fence symbol is not scaled (a cambria side effect). The
-second bit forces italic correction between a preceding character ordinal and the
-fenced subformula, while the third bit turns that subformula into an ordinary so
-that the same spacing applies as with unfenced variants. Here we show Cambria
-(with \lpr {mathitalicsmode} enabled).
-
-\starttexdefinition Whatever #1
-    \NC \type{\mathdelimitersmode = #1}
-    \NC \mathitalicsmode1\mathdelimitersmode#1\ruledhbox{\showglyphs\showfontkerns\showfontitalics$f(x)$}
-    \NC \mathitalicsmode1\mathdelimitersmode#1\ruledhbox{\showglyphs\showfontkerns\showfontitalics$f\left(x\right)$}
-    \NC \NR
-\stoptexdefinition
-
-\start
-    \switchtobodyfont[cambria]
-    \starttabulate[|l|l|l|]
-        \Whatever{0}\Whatever{1}\Whatever{2}\Whatever{3}%
-        \Whatever{4}\Whatever{5}\Whatever{6}\Whatever{7}%
-    \stoptabulate
-\stop
-
-So, when set to 7 fenced subformulas with unscaled delimiters come out the same
-as unfenced ones. This can be handy for cases where one is forced to use \prm
-{left} and \prm {right} always because of unpredictable content. As said, it's an
-experimental feature (which somehow fits in the exceptional way fences are dealt
-with in the engine). The full list of flags is given in the next table:
-
-\starttabulate[|c|l|]
-\DB value  \BC meaning \NC \NR
-\TB
-\NC \type{"01} \NC don't apply the usual shift \NC \NR
-\NC \type{"02} \NC apply italic correction when possible \NC \NR
-\NC \type{"04} \NC force an ordinary subformula \NC \NR
-\NC \type{"08} \NC no shift when a base character \NC \NR
-\NC \type{"10} \NC only shift when an extensible \NC \NR
-\LL
-\stoptabulate
-
-The effect can depend on the font (and for Cambria one can use for instance \type {"16}).
-
 \subsection[mathacc]{Accent handling}
 
 \topicindex {math+accents}
@@ -1543,49 +1570,60 @@
 
 \startsection[title={Goodies}]
 
-\subsection {Flattening: \lpr {mathflattenmode}}
+\subsection {Obsolete}
 
-\topicindex {math+flattening}
+Per TL 2026 the following primitives are \quote {ignored}. They were not used in
+two decades unless by \CONTEXT\ for exploring variants but we can do that
+differently now. Obsolete commands that trigger a warning: \typ {\mathoption},
+\typ {\mathitalicssmode}, \typ {\mathnolimitsmode}, \typ {\mathscriptboxmode},
+\typ {\mathscriptcharmode}, \typ {\mathflattenmode}, \typ {\mathdefaultsmode},
+\typ {\mathrulethicknessmode}, \typ {\mathdelimitersmode}. Also no longer used
+are the parameters \typ {\Umathnolimitsupfactor} and \typ
+{\Umathnolimitsubfactor}.
 
-The \TEX\ math engine collapses \type {ord} noads without sub- and superscripts
-and a character as nucleus. and which has the side effect that in \OPENTYPE\ mode
-italic corrections are applied (given that they are enabled).
+% \subsection {Flattening: \lpr {mathflattenmode}}
+%
+% \topicindex {math+flattening}
+%
+% The \TEX\ math engine collapses \type {ord} noads without sub- and superscripts
+% and a character as nucleus. and which has the side effect that in \OPENTYPE\ mode
+% italic corrections are applied (given that they are enabled).
+%
+% \startbuffer[sample]
+% \switchtobodyfont[modern]
+% $V \mathbin{\mathbin{v}} V$\par
+% $V \mathord{\mathord{v}} V$\par
+% \stopbuffer
+%
+% \typebuffer[sample]
+%
+% This renders as:
+%
+% \blank \start \mathflattenmode\plusone \getbuffer[sample] \stop \blank
+%
+% When we set \lpr {mathflattenmode} to 31 we get:
+%
+% \blank \start \mathflattenmode\numexpr1+2+4+8+16\relax \getbuffer[sample] \stop \blank
+%
+% When you see no difference, then the font probably has the proper character
+% dimensions and no italic correction is needed. For Latin Modern (at least till
+% 2018) there was a visual difference. In that respect this parameter is not always
+% needed unless of course you want efficient math lists anyway.
+%
+% You can influence flattening by adding the appropriate number to the value of the
+% mode parameter. The default value is~1.
+%
+% \starttabulate[|Tc|c|]
+% \DB mode \BC class \NC \NR
+% \TB
+% \NC  1   \NC ord   \NC \NR
+% \NC  2   \NC bin   \NC \NR
+% \NC  4   \NC rel   \NC \NR
+% \NC  8   \NC punct \NC \NR
+% \NC 16   \NC inner \NC \NR
+% \LL
+% \stoptabulate
 
-\startbuffer[sample]
-\switchtobodyfont[modern]
-$V \mathbin{\mathbin{v}} V$\par
-$V \mathord{\mathord{v}} V$\par
-\stopbuffer
-
-\typebuffer[sample]
-
-This renders as:
-
-\blank \start \mathflattenmode\plusone \getbuffer[sample] \stop \blank
-
-When we set \lpr {mathflattenmode} to 31 we get:
-
-\blank \start \mathflattenmode\numexpr1+2+4+8+16\relax \getbuffer[sample] \stop \blank
-
-When you see no difference, then the font probably has the proper character
-dimensions and no italic correction is needed. For Latin Modern (at least till
-2018) there was a visual difference. In that respect this parameter is not always
-needed unless of course you want efficient math lists anyway.
-
-You can influence flattening by adding the appropriate number to the value of the
-mode parameter. The default value is~1.
-
-\starttabulate[|Tc|c|]
-\DB mode \BC class \NC \NR
-\TB
-\NC  1   \NC ord   \NC \NR
-\NC  2   \NC bin   \NC \NR
-\NC  4   \NC rel   \NC \NR
-\NC  8   \NC punct \NC \NR
-\NC 16   \NC inner \NC \NR
-\LL
-\stoptabulate
-
 \subsection {Less Tracing}
 
 \topicindex {math+tracing}
@@ -1594,63 +1632,68 @@
 to limit tracing. Only when \type {tracingassigns} and|/|or \type
 {tracingrestores} are set to~2 or more they will be traced.
 
-\subsection {Math options with \lpr {mathdefaultsmode}}
+% \subsection {Math options with \lpr {mathdefaultsmode}}
+%
+% This option has been introduced because \LATEX\ developers wanted some of the
+% defaults to be different from the ones that were set in stone when we froze
+% \LUATEX. The default values are:
+%
+% \starttabulate[|l|c|c|]
+% \DB                 \BC scanning \BC rendering \NC \NR
+% \TB
+% \NC radical/root    \NC cramped  \NC cramped   \NC \NR
+% \NC under delimiter \NC cramped  \NC supstyle  \NC \NR
+% \NC over delimiter  \NC cramped  \NC substyle  \NC \NR
+% \NC delimiter under \NC cramped  \NC current   \NC \NR
+% \NC delimiter over  \NC cramped  \NC current   \NC \NR
+% \LL
+% \stoptabulate
+%
+% When \type {\mathdefaultsmode} is larger than zero, we have:
+%
+% \starttabulate[|l|c|c|]
+% \DB                 \BC scanning \BC rendering \NC \NR
+% \TB
+% \NC radical/root    \NC cramped  \NC cramped   \NC \NR
+% \NC under delimiter \NC substyle \NC substyle  \NC \NR
+% \NC over delimiter  \NC supstyle \NC supstyle  \NC \NR
+% \NC delimiter under \NC current  \NC current   \NC \NR
+% \NC delimiter over  \NC cramped  \NC cramped   \NC \NR
+% \LL
+% \stoptabulate
+%
+% It is outside the scope of this manual to discuss the rationale behind these
+% defaults. The zero values date back from the early times. If needed you can
+% explicitly set the style in the content argument.
 
-This option has been introduced because \LATEX\ developers wanted some of the
-defaults to be different from the ones that were set in stone when we froze
-\LUATEX. The default values are:
+% \subsection {Math options with \lpr {mathoption}}
+%
+% This command is now obsolete and triggers an error message. It was only meant
+% for experiments.
 
-\starttabulate[|l|c|c|]
-\DB                 \BC scanning \BC rendering \NC \NR
-\TB
-\NC radical/root    \NC cramped  \NC cramped   \NC \NR
-\NC under delimiter \NC cramped  \NC supstyle  \NC \NR
-\NC over delimiter  \NC cramped  \NC substyle  \NC \NR
-\NC delimiter under \NC cramped  \NC current   \NC \NR
-\NC delimiter over  \NC cramped  \NC current   \NC \NR
-\LL
-\stoptabulate
+% % even more obsolete:
 
-When \type {\mathdefaultsmode} is larger than zero, we have:
+% The logic in the math engine is rather complex and there are often no universal
+% solutions (read: what works out well for one font, fails for another). Therefore
+% some variations in the implementation are driven by parameters (modes). In
+% addition there is a new primitive \lpr {mathoption} which will be used for
+% testing. Don't rely on any option to be there in a production version as they are
+% meant for development.
+%
+% This option was introduced for testing purposes when the math engine got split
+% code paths and it forces the engine to treat new fonts as old ones with respect
+% to italic correction etc. There are no guarantees given with respect to the final
+% result and unexpected side effects are not seen as bugs as they relate to font
+% properties. There is currently only one option:
+%
+% \startbuffer
+% \mathoption old 1
+% \stopbuffer
+%
+% The \type {oldmath} boolean flag in the \LUA\ font table is the official way to
+% force old treatment as it's bound to fonts. Like with all options we may
+% temporarily introduce with this command this feature is not meant for production.
 
-\starttabulate[|l|c|c|]
-\DB                 \BC scanning \BC rendering \NC \NR
-\TB
-\NC radical/root    \NC cramped  \NC cramped   \NC \NR
-\NC under delimiter \NC substyle \NC substyle  \NC \NR
-\NC over delimiter  \NC supstyle \NC supstyle  \NC \NR
-\NC delimiter under \NC current  \NC current   \NC \NR
-\NC delimiter over  \NC cramped  \NC cramped   \NC \NR
-\LL
-\stoptabulate
-
-It is outside the scope of this manual to discuss the rationale behind these
-defaults. The zero values date back from the early times. If needed you can
-explicitly set the style in the content argument.
-
-\subsection {Math options with \lpr {mathoption}}
-
-The logic in the math engine is rather complex and there are often no universal
-solutions (read: what works out well for one font, fails for another). Therefore
-some variations in the implementation are driven by parameters (modes). In
-addition there is a new primitive \lpr {mathoption} which will be used for
-testing. Don't rely on any option to be there in a production version as they are
-meant for development.
-
-This option was introduced for testing purposes when the math engine got split
-code paths and it forces the engine to treat new fonts as old ones with respect
-to italic correction etc. There are no guarantees given with respect to the final
-result and unexpected side effects are not seen as bugs as they relate to font
-properties. There is currently only one option:
-
-\startbuffer
-\mathoption old 1
-\stopbuffer
-
-The \type {oldmath} boolean flag in the \LUA\ font table is the official way to
-force old treatment as it's bound to fonts. Like with all options we may
-temporarily introduce with this command this feature is not meant for production.
-
 % % obsolete:
 %
 % \subsubsection {\type {\mathoption noitaliccompensation}}

Modified: branches/stable/source/src/texk/web2c/doc/luatex/luatex.pdf
===================================================================
(Binary files differ)

Modified: branches/stable/source/src/texk/web2c/etexdir/ChangeLog
===================================================================
--- branches/stable/source/src/texk/web2c/etexdir/ChangeLog	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/etexdir/ChangeLog	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,3 +1,7 @@
+2025-03-07  Karl Berry  <karl at tug.org>
+
+	* TL'25 release.
+
 2025-01-27  Karl Berry  <karl at freefriends.org>
 
 	* am/etex.am (etex-pool.c): exit 1 if makecpool failed.

Modified: branches/stable/source/src/texk/web2c/help.h
===================================================================
--- branches/stable/source/src/texk/web2c/help.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/help.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -59,8 +59,8 @@
     "+b          print banner line on terminal",
     "+h          print success message on completion",
     "+p          print progress report messages",
-    "+/-q        shortcut for '-bhp'; also '--quiet' (default)",
-    "+/-v        shortcut for '+bhp'; also '--verbose'",
+    "+/-q        shortcut for '-bhp'; also '--quiet'",
+    "+/-v        shortcut for '+bhp'; also '--verbose' (default)",
     "+c          check temporary output for changes",
     "-dN         set 'kpathsea_debug' to N (0..127)",
     "+k          keep separators in numeric literals in the output",
@@ -82,8 +82,8 @@
     "+b          print banner line on terminal",
     "+h          print success message on completion",
     "+p          print progress report messages",
-    "+/-q        shortcut for '-bhp'; also '--quiet' (default)",
-    "+/-v        shortcut for '+bhp'; also '--verbose'",
+    "+/-q        shortcut for '-bhp'; also '--quiet'",
+    "+/-v        shortcut for '+bhp'; also '--verbose' (default)",
     "+c          check temporary output for changes",
     "-dN         set 'kpathsea_debug' to N (0..127)",
     "-e          do not enclose C material in \\PB{...}",
@@ -111,8 +111,8 @@
     "+b          print banner line on terminal",
     "+h          print success message on completion",
     "+p          print progress report messages",
-    "+/-q        shortcut for '-bhp'; also '--quiet' (default)",
-    "+/-v        shortcut for '+bhp'; also '--verbose'",
+    "+/-q        shortcut for '-bhp'; also '--quiet'",
+    "+/-v        shortcut for '+bhp'; also '--verbose' (default)",
     "+c          check temporary output for changes",
     "-dN         set 'kpathsea_debug' to N (0..127)",
     "-e          do not enclose C material in \\PB{...}",

Modified: branches/stable/source/src/texk/web2c/lib/ChangeLog
===================================================================
--- branches/stable/source/src/texk/web2c/lib/ChangeLog	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/lib/ChangeLog	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,3 +1,21 @@
+2025-04-26  Yukimasa Morimi  <h20y6m at yahoo.co.jp>
+
+	* openclose.c: Convert recorder filename to UTF-8.
+	https://github.com/texjporg/tex-jp-build/issues/45
+
+2025-03-07  Karl Berry  <karl at tug.org>
+
+	* TL'25 release.
+
+2025-03-07  Akira Kakuto  <kakuto at jcom.zaq.ne.jp>
+
+	* texmfmp.c (gettexstring) [XETEX]: correct non-BMP characters in
+	filenames with synctex.
+
+2025-02-28  Akira Kakuto  <kakuto at jcom.zaq.ne.jp>
+
+	* texmfmp.c: Remove problematic lines for windows (windows only)
+
 2025-02-04  Hironori Kitagawa  <h_kitagawa2001 at yahoo.co.jp>
 
 	* texmfmp.c: Avoid segmentation fault.

Modified: branches/stable/source/src/texk/web2c/lib/openclose.c
===================================================================
--- branches/stable/source/src/texk/web2c/lib/openclose.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/lib/openclose.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -142,7 +142,10 @@
 recorder_change_filename (string new_name)
 {
    string temp = NULL;
-   
+#if defined(PTEX) && !defined(WIN32)
+   string fname0 = NULL;
+#endif
+
    if (!recorder_file)
      return;
 
@@ -151,6 +154,13 @@
    fclose (recorder_file);
 #endif /* _WIN32 */
 
+#if defined(PTEX) && !defined(WIN32)
+   fname0 = ptenc_from_internal_enc_string_to_utf8(new_name);
+   if (fname0) {
+     new_name = fname0;
+   }
+#endif
+
    /* If an output directory was specified, use it.  */
    if (output_directory) {
      temp = concat3(output_directory, DIR_SEP_STRING, new_name);
@@ -173,6 +183,10 @@
 
    if (temp)
      free (temp);
+#if defined(PTEX) && !defined(WIN32)
+   if (fname0)
+     free (fname0);
+#endif
 }
 
 /* helper for recorder_record_* */
@@ -407,17 +421,10 @@
 open_output (FILE **f_ptr, const_string fopen_mode)
 {
     string fname;
-#if defined(PTEX) && !defined(WIN32)
     string fname0;
-#endif
     boolean absolute = kpse_absolute_p(nameoffile+1, false);
 
-    /* If we have an explicit output directory, use it. */
-    if (output_directory && !absolute) {
-        fname = concat3(output_directory, DIR_SEP_STRING, nameoffile + 1);
-    } else {
-        fname = nameoffile + 1;
-    }
+    fname = nameoffile + 1;
 #if defined(PTEX) && !defined(WIN32)
     fname0 = ptenc_from_internal_enc_string_to_utf8(fname);
     if (fname0) {
@@ -425,6 +432,14 @@
         fname = fname0;
     }
 #endif
+    /* If we have an explicit output directory, use it. */
+    if (output_directory && !absolute) {
+        fname0 = concat3(output_directory, DIR_SEP_STRING, fname);
+        if (fname0) {
+            if (fname != nameoffile + 1) free(fname);
+            fname = fname0;
+        }
+    }
 
     /* Is the filename openable as given?  */
     *f_ptr = fopen (fname, fopen_mode);

Modified: branches/stable/source/src/texk/web2c/lib/texmfmp.c
===================================================================
--- branches/stable/source/src/texk/web2c/lib/texmfmp.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/lib/texmfmp.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -531,6 +531,7 @@
       *d++ = QUOTE;
     }
     *d = '\0';
+#if 0
 #ifdef WIN32
     {
       char *p, *q, *r;
@@ -569,6 +570,7 @@
       }
     }
 #endif
+#endif
   }
 
   return allow;
@@ -3190,7 +3192,7 @@
     if (c >= 0xD800 && c <= 0xDBFF) {
       unsigned lo = strpool[++i + strstart[s - 65536L]];
       if (lo >= 0xDC00 && lo <= 0xDFFF)
-        c = (c - 0xD800) * 0x0400 + lo - 0xDC00;
+        c = 0x10000 + (c - 0xD800) * 0x0400 + lo - 0xDC00;
       else
         c = 0xFFFD;
     }

Modified: branches/stable/source/src/texk/web2c/pdftexdir/ChangeLog
===================================================================
--- branches/stable/source/src/texk/web2c/pdftexdir/ChangeLog	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/pdftexdir/ChangeLog	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,3 +1,51 @@
+2025-05-17  Karl Berry  <karl at freefriends.org>
+
+        * NEWS,
+        * pdftex_version.h,
+        * pdftex.web (pdftex_revision, pdftex_version_string):
+        version [1.40.]28 for post-TL25 fix.
+
+2025-05-15  Thanh Han The  <hanthethanh at gmail.com>
+
+	* pdftex.web (adv_char_width): remove dd parameter; call
+	divide_scaled by the hardwired 4, instead of dd.
+	(pdf_init_font): also check that the width of character 32 is >one_bp
+	for the pdf_font_has_space_char value.
+	(pdf_begin_string, output_one_char): change adv_char_width calls
+	similarly.
+	This is to fix overlapping text in ptmr8r and other fonts,
+	reported by Ulrike 01 May 2025 10:23:07.
+	Test: 40-overlapping-text-with-pdfinterwordspaceon.
+	(pdftex r963)
+
+2025-04-17  Karl Berry  <karl at freefriends.org>
+
+	* pdftex.web (bool): rename variable to booltemp, kowtowing to C23.
+
+2025-03-07  Karl Berry  <karl at tug.org>
+
+	* TL'25 release.
+
+2025-02-18  Thanh Han The  <hanthethanh at gmail.com>
+
+	* pdftex.web (pdf_begin_string): more space fixes.
+	(pdftex r958)
+
+2025-02-17  Thanh Han The  <hanthethanh at gmail.com>
+
+	* pdftex.web (pdf_begin_string): remove	"and (not must_set_text_pos)"
+	from condition for must_insert_space := true.
+	(pdftex r955)
+
+2025-02-16  Thanh Han The  <hanthethanh at gmail.com>
+
+	* pdftex.web: fixes for previous change to add missing interword
+	spaces at font switches, following reports:
+	https://tug.org/pipermail/pdftex/2025-February/009443.html
+	https://tug.org/pipermail/tex-live/2025-February/051136.html
+	https://tug.org/pipermail/tex-live/2025-February/051139.html
+	Copied from pdftex r953.
+
 2025-02-11  Max Chernoff  <tex at maxchernoff.ca>
 
 	* pdftex.web (scale_image): no warning if both resolutions are zero.

Modified: branches/stable/source/src/texk/web2c/pdftexdir/NEWS
===================================================================
--- branches/stable/source/src/texk/web2c/pdftexdir/NEWS	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/pdftexdir/NEWS	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,9 @@
-pdfTeX 3.141592653-2.6-1.40.27 (TeX Live 2025)
+pdfTeX 3.141592653-2.6-1.40.28 (TeX Live 2025 post-release) (17 May March 2025)
+- bugfixes:
+  - fix overlapping text in ptmr8r and other fonts.
+
+-----------------------------------------------------------------------------
+pdfTeX 3.141592653-2.6-1.40.27 (TeX Live 2025) (7 March 2025)
 - changes:
   - new primitive \pdfptexuseunderscore: if positive or
     if \pdfmajorversion >= 2, PTEX.Fullbanner and other dictionary

Modified: branches/stable/source/src/texk/web2c/pdftexdir/pdftex.web
===================================================================
--- branches/stable/source/src/texk/web2c/pdftexdir/pdftex.web	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/pdftexdir/pdftex.web	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,4 @@
-% Copyright 1996-2024 Han Th\^e\llap{\raise 0.5ex\hbox{\'{}}} Th\`anh,
+% Copyright 1996-2025 Han Th\^e\llap{\raise 0.5ex\hbox{\'{}}} Th\`anh,
 % <thanh@@pdftex.org>
 
 % This file is part of pdfTeX.
@@ -307,8 +307,8 @@
   {printed when \eTeX\ starts}
 @#
 @d pdftex_version==140 { \.{\\pdftexversion} }
- at d pdftex_revision=="27" { \.{\\pdftexrevision} }
- at d pdftex_version_string=='-1.40.27' {current \pdfTeX\ version}
+ at d pdftex_revision=="28" { \.{\\pdftexrevision} }
+ at d pdftex_version_string=='-1.40.28' {current \pdfTeX\ version}
 @#
 @d pdfTeX_banner=='This is pdfTeX, Version 3.141592653',eTeX_version_string,pdftex_version_string
    {printed when \pdfTeX\ starts}
@@ -10959,7 +10959,7 @@
 @!save_scanner_status:small_number; {|scanner_status| upon entry}
 @!save_def_ref: pointer; {|def_ref| upon entry, important if inside `\.{\\message}'}
 @!save_warning_index: pointer;
-@!bool: boolean; {temp boolean}
+@!booltemp: boolean; {temp boolean}
 @!i: integer; {first temp integer}
 @!j: integer; {second temp integer}
 @!b:pool_pointer; {base of temporary string}
@@ -11159,7 +11159,7 @@
     save_warning_index := warning_index;
     save_def_ref := def_ref;
     save_cur_string;
-    bool := scan_keyword("file");
+    booltemp := scan_keyword("file");
     scan_pdf_ext_toks;
     s := tokens_to_string(def_ref);
     delete_token_ref(def_ref);
@@ -11167,7 +11167,7 @@
     warning_index := save_warning_index;
     scanner_status := save_scanner_status;
     b := pool_ptr;
-    getmd5sum(s, bool);
+    getmd5sum(s, booltemp);
     link(garbage) := str_toks(b);
     flush_str(s);
     ins_list(link(temp_head));
@@ -11230,7 +11230,7 @@
     save_def_ref := def_ref;
     save_cur_string;
     {scan for icase}
-    bool := scan_keyword("icase");
+    booltemp := scan_keyword("icase");
     {scan for subcount}
     i := -1; {default for subcount}
     if scan_keyword("subcount") then begin
@@ -11247,7 +11247,7 @@
     warning_index := save_warning_index;
     scanner_status := save_scanner_status;
     b := pool_ptr;
-    matchstrings(s, t, i, bool);
+    matchstrings(s, t, i, booltemp);
     link(garbage) := str_toks(b);
     flush_str(t);
     flush_str(s);
@@ -11286,7 +11286,7 @@
   end;
 pdf_colorstack_init_code:
   begin
-    bool := scan_keyword("page");
+    booltemp := scan_keyword("page");
     if scan_keyword("direct") then
         cur_val := direct_always
     else
@@ -11304,7 +11304,7 @@
     def_ref := save_def_ref;
     warning_index := save_warning_index;
     scanner_status := save_scanner_status;
-    cur_val := newcolorstack(s, cur_val, bool);
+    cur_val := newcolorstack(s, cur_val, booltemp);
     flush_str(s);
     cur_val_level := int_val;
     if cur_val < 0 then begin

Modified: branches/stable/source/src/texk/web2c/pdftexdir/pdftex_version.h
===================================================================
--- branches/stable/source/src/texk/web2c/pdftexdir/pdftex_version.h	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/pdftexdir/pdftex_version.h	2025-05-17 22:44:20 UTC (rev 964)
@@ -1 +1 @@
-#define PDFTEX_VERSION "1.40.27"
+#define PDFTEX_VERSION "1.40.28"

Modified: branches/stable/source/src/texk/web2c/synctexdir/ChangeLog
===================================================================
--- branches/stable/source/src/texk/web2c/synctexdir/ChangeLog	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/synctexdir/ChangeLog	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,3 +1,12 @@
+2025-03-09  Akira Kakuto  <kakuto at jcom.zaq.ne.jp>
+
+	* synctex.c: improve printing of a synctex file name
+	(windows only).
+
+2025-03-07  Karl Berry  <karl at tug.org>
+
+	* TL'25 release.
+
 2024-10-13  <user202729 at protonmail.com>
 
 	* synctex_record_node_kern: pass "kern" instead of "glue"

Modified: branches/stable/source/src/texk/web2c/synctexdir/synctex.c
===================================================================
--- branches/stable/source/src/texk/web2c/synctexdir/synctex.c	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/synctexdir/synctex.c	2025-05-17 22:44:20 UTC (rev 964)
@@ -968,10 +968,11 @@
                         if (SYNCTEX_interaction>0) {
 #ifdef W32UPTEXSYNCTEX
                         {
-                        char *stmp = chgto_oem(tmp);
+                        int savecp = GetConsoleOutputCP();
+                        SetConsoleOutputCP(file_system_codepage);
                         printf((synctex_ctxt.flags.quoted ? "\nSyncTeX written on \"%s\"\n" : "\nSyncTeX written on %s.\n"),
-                               stmp);
-                        free(stmp);
+                               tmp);
+                        SetConsoleOutputCP(savecp);
                         }
 #else
 #ifndef SYNCTEX_PRE_NL

Modified: branches/stable/source/src/texk/web2c/tangle.ch
===================================================================
--- branches/stable/source/src/texk/web2c/tangle.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/tangle.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -295,7 +295,8 @@
     begin if buffer[i]>="a" then chopped_id[s]:=buffer[i]-@'40
 @y
   begin if (buffer[i]<>"_") or (allow_underlines and not strict_mode) then
-    begin if (strict_mode or force_uppercase) and (buffer[i]>="a") then
+    begin if (strict_mode or force_uppercase)
+           and (buffer[i]>="a") and (buffer[i]<="z") then
       chopped_id[s]:=buffer[i]-@'40
     else if (not strict_mode and force_lowercase)
            and (buffer[i]>="A") and (buffer[i]<="Z") then
@@ -313,7 +314,9 @@
     begin if c>="a" then c:=c-@'40; {merge lowercase with uppercase}
 @y
   if c<>"_" or (allow_underlines and not strict_mode) then
-    begin if (strict_mode or force_uppercase) and (c>="a") then c:=c-@'40
+    begin if (strict_mode or force_uppercase)
+           and (c>="a") and (c<="z") then
+      c:=c-@'40
     else if (not strict_mode and force_lowercase)
            and (c>="A") and (c<="Z") then
       c:=c+@'40;
@@ -482,9 +485,11 @@
 identifier: begin k:=0; j:=byte_start[cur_val]; w:=cur_val mod ww;
   while (k<max_id_length)and(j<byte_start[cur_val+ww]) do
     begin incr(k); out_contrib[k]:=byte_mem[w,j]; incr(j);
-    if force_uppercase and (out_contrib[k]>="a") then
+    if force_uppercase
+          and (out_contrib[k]>="a") and (out_contrib[k]<="z") then
       out_contrib[k]:=out_contrib[k]-@'40
-    else if force_lowercase and (out_contrib[k]<="Z") then
+    else if force_lowercase
+          and (out_contrib[k]>="A") and (out_contrib[k]<="Z") then
       out_contrib[k]:=out_contrib[k]+@'40
     else if not allow_underlines and (out_contrib[k]="_") then decr(k);
     end;
@@ -492,16 +497,11 @@
   end;
 @z
 
- at x [11.119] l.2199 - Stretch limits of constants to match what we set for expressions.
-  if n>=@'2000000000 then err_print('! Constant too big')
+ at x [11.119] l.2185 - Calculate with decimal limit value INT_MAX/10.
+  if n>=@'1463146314 then err_print('! Constant too big')
 @y
-  if n>=@'10000000000 then err_print('! Constant too big')
+  if n>=214748364 then err_print('! Constant too big')
 @z
- at x [11.119] l.2208
-  if n>=@"8000000 then err_print('! Constant too big')
- at y
-  if n>=@"40000000 then err_print('! Constant too big')
- at z
 
 @x [14.157] l.2862 - Larger numerics.
 if abs(accumulator)>=@'100000 then
@@ -521,6 +521,31 @@
     add_in(equiv[q]-@'10000000000);
 @z
 
+ at x [14.160] l.2915 - Avoid numeric overflow; see also section 119.
+repeat val:=10*val+next_control-"0"; next_control:=get_next;
+ at y
+repeat if val>=214748364 then err_print('! Constant too big')
+ at .Constant too big@>
+  else val:=10*val+next_control-"0";
+  next_control:=get_next;
+ at z
+ at x [14.161] l.2920 - Avoid numeric overflow; see also section 119.
+repeat val:=8*val+next_control-"0"; next_control:=get_next;
+ at y
+repeat if val>=@'2000000000 then err_print('! Constant too big')
+ at .Constant too big@>
+  else val:=8*val+next_control-"0";
+  next_control:=get_next;
+ at z
+ at x [14.162] l.2926 - Avoid numeric overflow; see also section 119.
+val:=16*val+next_control-"0"; next_control:=get_next;
+ at y
+  if val>=@"8000000 then err_print('! Constant too big')
+ at .Constant too big@>
+  else val:=16*val+next_control-"0";
+  next_control:=get_next;
+ at z
+
 @x [15.165] l.2964 - Add parametric2 macros (macros that use [] to delimit arguments).
   "(": incr(bal);
   ")": if bal=0 then err_print('! Extra )')
@@ -568,6 +593,12 @@
     end
 @z
 
+ at x [16.173] l.3095 - Reject strings as macro names.
+  if next_control<>identifier then
+ at y
+  if (next_control<>identifier) or (buffer[id_first]="""") then
+ at z
+
 @x [16.173] l.3107 - Add parametric2 macros (macros that use [] to delimit arguments).
   else @<If the next text is `\.{(\#)==}', call |define_macro|
     and |goto continue|@>;

Modified: branches/stable/source/src/texk/web2c/tangleboot.pin
===================================================================
--- branches/stable/source/src/texk/web2c/tangleboot.pin	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/tangleboot.pin	2025-05-17 22:44:20 UTC (rev 964)
@@ -197,11 +197,11 @@
 idfirst;s:=0;h:=0;
 while(i<idloc)and(s<unambiglength)do begin if(buffer[i]<>95)or(
 allowunderlines and not strictmode)then begin if(strictmode or
-forceuppercase)and(buffer[i]>=97)then choppedid[s]:=buffer[i]-32 else if
-(not strictmode and forcelowercase)and(buffer[i]>=65)and(buffer[i]<=90)
-then choppedid[s]:=buffer[i]+32 else choppedid[s]:=buffer[i];
-h:=(h+h+choppedid[s])mod hashsize;s:=s+1;end;i:=i+1;end;choppedid[s]:=0;
-end{:58};
+forceuppercase)and(buffer[i]>=97)and(buffer[i]<=122)then choppedid[s]:=
+buffer[i]-32 else if(not strictmode and forcelowercase)and(buffer[i]>=65
+)and(buffer[i]<=90)then choppedid[s]:=buffer[i]+32 else choppedid[s]:=
+buffer[i];h:=(h+h+choppedid[s])mod hashsize;s:=s+1;end;i:=i+1;end;
+choppedid[s]:=0;end{:58};
 if p<>nameptr then{59:}begin if ilk[p]=0 then begin if t=1 then begin
 writeln(stdout);write(stdout,'! This identifier has already appeared');
 error;end;{60:}q:=chophash[h];
@@ -214,8 +214,8 @@
 w:=q mod 3;
 while(k<bytestart[q+3])and(s<unambiglength)do begin c:=bytemem[w,k];
 if c<>95 or(allowunderlines and not strictmode)then begin if(strictmode
-or forceuppercase)and(c>=97)then c:=c-32 else if(not strictmode and
-forcelowercase)and(c>=65)and(c<=90)then c:=c+32;
+or forceuppercase)and(c>=97)and(c<=122)then c:=c-32 else if(not
+strictmode and forcelowercase)and(c>=65)and(c<=90)then c:=c+32;
 if choppedid[s]<>c then goto 32;s:=s+1;end;k:=k+1;end;
 if(k=bytestart[q+3])and(choppedid[s]<>0)then goto 32;
 begin writeln(stdout);write(stdout,'! Identifier conflict with ');end;
@@ -469,22 +469,22 @@
 130:begin k:=0;j:=bytestart[curval];w:=curval mod 3;
 while(k<maxidlength)and(j<bytestart[curval+3])do begin k:=k+1;
 outcontrib[k]:=bytemem[w,j];j:=j+1;
-if forceuppercase and(outcontrib[k]>=97)then outcontrib[k]:=outcontrib[k
-]-32 else if forcelowercase and(outcontrib[k]<=90)then outcontrib[k]:=
-outcontrib[k]+32 else if not allowunderlines and(outcontrib[k]=95)then k
-:=k-1;end;sendout(2,k);end;
-{:116}{119:}48,49,50,51,52,53,54,55,56,57:begin n:=0;
+if forceuppercase and(outcontrib[k]>=97)and(outcontrib[k]<=122)then
+outcontrib[k]:=outcontrib[k]-32 else if forcelowercase and(outcontrib[k]
+>=65)and(outcontrib[k]<=90)then outcontrib[k]:=outcontrib[k]+32 else if
+not allowunderlines and(outcontrib[k]=95)then k:=k-1;end;sendout(2,k);
+end;{:116}{119:}48,49,50,51,52,53,54,55,56,57:begin n:=0;
 repeat curchar:=curchar-48;if n>=214748364 then begin writeln(stdout);
 write(stdout,'! Constant too big');error;end else n:=10*n+curchar;
 curchar:=getoutput;until(curchar>57)or(curchar<48);sendval(n);k:=0;
 if curchar=101 then curchar:=69;if curchar=69 then goto 2 else goto 21;
 end;125:sendval(poolchecksum);12:begin n:=0;curchar:=48;
-repeat curchar:=curchar-48;if n>=1073741824 then begin writeln(stdout);
+repeat curchar:=curchar-48;if n>=268435456 then begin writeln(stdout);
 write(stdout,'! Constant too big');error;end else n:=8*n+curchar;
 curchar:=getoutput;until(curchar>55)or(curchar<48);sendval(n);goto 21;
 end;13:begin n:=0;curchar:=48;
 repeat if curchar>=65 then curchar:=curchar-55 else curchar:=curchar-48;
-if n>=1073741824 then begin writeln(stdout);
+if n>=134217728 then begin writeln(stdout);
 write(stdout,'! Constant too big');error;end else n:=16*n+curchar;
 curchar:=getoutput;
 until(curchar>70)or(curchar<48)or((curchar>57)and(curchar<65));
@@ -699,16 +699,22 @@
 begin{158:}accumulator:=0;nextsign:=+1;
 while true do begin nextcontrol:=getnext;
 21:case nextcontrol of 48,49,50,51,52,53,54,55,56,57:begin{160:}val:=0;
-repeat val:=10*val+nextcontrol-48;nextcontrol:=getnext;
+repeat if val>=214748364 then begin writeln(stdout);
+write(stdout,'! Constant too big');error;
+end else val:=10*val+nextcontrol-48;nextcontrol:=getnext;
 until(nextcontrol>57)or(nextcontrol<48){:160};
 begin accumulator:=accumulator+nextsign*(val);nextsign:=+1;end;goto 21;
 end;12:begin{161:}val:=0;nextcontrol:=48;
-repeat val:=8*val+nextcontrol-48;nextcontrol:=getnext;
+repeat if val>=268435456 then begin writeln(stdout);
+write(stdout,'! Constant too big');error;
+end else val:=8*val+nextcontrol-48;nextcontrol:=getnext;
 until(nextcontrol>55)or(nextcontrol<48){:161};
 begin accumulator:=accumulator+nextsign*(val);nextsign:=+1;end;goto 21;
 end;13:begin{162:}val:=0;nextcontrol:=48;
 repeat if nextcontrol>=65 then nextcontrol:=nextcontrol-7;
-val:=16*val+nextcontrol-48;nextcontrol:=getnext;
+if val>=134217728 then begin writeln(stdout);
+write(stdout,'! Constant too big');error;
+end else val:=16*val+nextcontrol-48;nextcontrol:=getnext;
 until(nextcontrol>70)or(nextcontrol<48)or((nextcontrol>57)and(
 nextcontrol<65)){:162};begin accumulator:=accumulator+nextsign*(val);
 nextsign:=+1;end;goto 21;end;130:begin q:=idlookup(0);
@@ -807,8 +813,8 @@
 while true do begin 22:while nextcontrol<=132 do begin nextcontrol:=
 skipahead;if nextcontrol=135 then begin loc:=loc-2;nextcontrol:=getnext;
 end;end;if nextcontrol<>133 then goto 30;nextcontrol:=getnext;
-if nextcontrol<>130 then begin begin writeln(stdout);
-write(stdout,'! Definition flushed, must start with ',
+if(nextcontrol<>130)or(buffer[idfirst]=34)then begin begin writeln(
+stdout);write(stdout,'! Definition flushed, must start with ',
 'identifier of length > 1');error;end;goto 22;end;nextcontrol:=getnext;
 if nextcontrol=61 then begin scannumeric(idlookup(1));goto 22;
 end else if nextcontrol=30 then begin definemacro(2);goto 22;

Modified: branches/stable/source/src/texk/web2c/tests/fix-changefile-lines.py
===================================================================
--- branches/stable/source/src/texk/web2c/tests/fix-changefile-lines.py	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/tests/fix-changefile-lines.py	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# $Id: fix-changefile-lines.py 73710 2025-02-03 18:32:15Z ascherer $
+# $Id: fix-changefile-lines.py 74543 2025-03-09 09:22:22Z ascherer $
 # Applied to tex.ch and mf.ch on 2024-06-03, following the request at:
 # https://tug.org/pipermail/tex-k/2024-June/004064.html
 """
@@ -122,7 +122,8 @@
                 while True:
                     self._pos += 1
                     if self._pos >= len(self._lines):
-                        eprint(f"! Change file ended before @y. (l. {self._pos+1} of change file)")
+                        eprint(f"! Change file ended before @y. " +
+                            f"(l. {self._pos+1} of change file)")
                         sys.exit(1)
                     line = self._lines[self._pos]
                     if line.startswith("@y"):
@@ -131,7 +132,8 @@
                         ]
                         return True
                     elif line.startswith("@x") or line.startswith("@z"):
-                        eprint(f"! Where is the matching @y?. (l. {self._pos+1} of change file)")
+                        eprint(f"! Where is the matching @y?. " +
+                            f"(l. {self._pos+1} of change file)")
                         eprint(line)
                         sys.exit(1)
             self._pos += 1
@@ -146,7 +148,8 @@
             try:
                 (part, section, line_number), tex_line = web_reader.next_line()
             except:
-                eprint(f"! Change file entry did not match. (l. {self._chunk_start+2} of change file)")
+                eprint(f"! Change file entry did not match. " +
+                    f"(l. {self._chunk_start+2} of change file)")
                 eprint(self._match_lines[0])
                 sys.exit(1)
             if tex_line == self._match_lines[0]:
@@ -156,7 +159,8 @@
                     except:
                         tex_line = None
                     if tex_line is None or tex_line != self._match_lines[i]:
-                        eprint(f"! Change file entry did not match. (l. {self._chunk_start+2+i} of change file)")
+                        eprint(f"! Change file entry did not match. " +
+                            f"(l. {self._chunk_start+2+i} of change file)")
                         eprint(self._match_lines[i])
                         sys.exit(1)
 

Added: branches/stable/source/src/texk/web2c/tests/invalidmu.tex
===================================================================
--- branches/stable/source/src/texk/web2c/tests/invalidmu.tex	                        (rev 0)
+++ branches/stable/source/src/texk/web2c/tests/invalidmu.tex	2025-05-17 22:44:20 UTC (rev 964)
@@ -0,0 +1,15 @@
+% $Id: invalidmu.tex 75108 2025-05-05 17:39:26Z karl $
+% Public domain, from Tyge Thiessen and David Fuchs.
+% 
+% When \mkern is followed by a normal (non-mu) dimen or skip, it gives
+% the expected "Incompatible glue units" error, but then continues with
+% up to two spurious additional errors. Fix from DRF in tex.ch at 26.449.
+% Original report: https://tug.org/pipermail/tex-k/2025-January/004150.html
+% TeX bug entry: https://tug.org/texmfbug/newbug.html#B182muerror
+
+\catcode`\$ = 3 % so we can run under initex
+\dimen0=1pt
+\skip0=1pt
+$\mkern \dimen0$
+$\mkern \skip0$
+\end


Property changes on: branches/stable/source/src/texk/web2c/tests/invalidmu.tex
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Modified: branches/stable/source/src/texk/web2c/tex.ch
===================================================================
--- branches/stable/source/src/texk/web2c/tex.ch	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/tex.ch	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,4 @@
-% $Id: tex.ch 73679 2025-02-01 22:56:43Z karl $
+% $Id: tex.ch 75108 2025-05-05 17:39:26Z karl $
 % tex.ch for C compilation with web2c, derived from various other change files.
 % By Tim Morgan, UC Irvine ICS Department, and many others.
 %
@@ -1587,6 +1587,22 @@
 if (t>=cs_token_flag)and(t<>end_write_token) then
 @z
 
+% Original report: https://tug.org/pipermail/tex-k/2025-January/004150.html
+% TeX bug entry: https://tug.org/texmfbug/newbug.html#B182muerror
+% Test file: tests/invalidmu.tex
+ at x [26.449] l.8878 - recover better from \mkern <non-mu-dimen-or-skip>
+  @<Coerce glue to a dimension@>;
+  if cur_val_level=mu_val then goto attach_sign;
+  if cur_val_level<>int_val then mu_error;
+ at y
+  if cur_val_level<>int_val then
+    begin
+    @<Coerce glue to a dimension@>;
+    if cur_val_level<>mu_val then mu_error;
+    goto attach_sign;
+    end;
+ at z
+
 % See above change "term_input: set limit when fatal_error" for references.
 @x [27.484] l.9495 - set limit when fatal_error
 else fatal_error("*** (cannot \read from terminal in nonstop modes)")

Modified: branches/stable/source/src/texk/web2c/web2c/ChangeLog
===================================================================
--- branches/stable/source/src/texk/web2c/web2c/ChangeLog	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/web2c/ChangeLog	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,3 +1,7 @@
+2025-03-07  Karl Berry  <karl at tug.org>
+
+	* TL'25 release.
+
 2023-03-09  Karl Berry  <karl at tug.org>
 
 	* TL'23 release.

Modified: branches/stable/source/src/texk/web2c/web2c/configure
===================================================================
--- branches/stable/source/src/texk/web2c/web2c/configure	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/texk/web2c/web2c/configure	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for Web2C Tools 2025.
+# Generated by GNU Autoconf 2.72 for Web2C Tools 2026/dev.
 #
 # Report bugs to <tex-k at tug.org>.
 #
@@ -614,8 +614,8 @@
 # Identity of this package.
 PACKAGE_NAME='Web2C Tools'
 PACKAGE_TARNAME='web2c-tools'
-PACKAGE_VERSION='2025'
-PACKAGE_STRING='Web2C Tools 2025'
+PACKAGE_VERSION='2026/dev'
+PACKAGE_STRING='Web2C Tools 2026/dev'
 PACKAGE_BUGREPORT='tex-k at tug.org'
 PACKAGE_URL=''
 
@@ -1365,7 +1365,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures Web2C Tools 2025 to adapt to many kinds of systems.
+'configure' configures Web2C Tools 2026/dev to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1436,7 +1436,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of Web2C Tools 2025:";;
+     short | recursive ) echo "Configuration of Web2C Tools 2026/dev:";;
    esac
   cat <<\_ACEOF
 
@@ -1560,7 +1560,7 @@
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-Web2C Tools configure 2025
+Web2C Tools configure 2026/dev
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -2341,7 +2341,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by Web2C Tools $as_me 2025, which was
+It was created by Web2C Tools $as_me 2026/dev, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -9233,7 +9233,7 @@
 
 # Define the identity of the package.
  PACKAGE='web2c-tools'
- VERSION='2025'
+ VERSION='2026/dev'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -16840,7 +16840,7 @@
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by Web2C Tools $as_me 2025, which was
+This file was extended by Web2C Tools $as_me 2026/dev, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -16908,7 +16908,7 @@
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-Web2C Tools config.status 2025
+Web2C Tools config.status 2026/dev
 configured by $0, generated by GNU Autoconf 2.72,
   with options \\"\$ac_cs_config\\"
 

Modified: branches/stable/source/src/utils/README
===================================================================
--- branches/stable/source/src/utils/README	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/utils/README	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,14 +1,19 @@
-$Id: README 73901 2025-02-11 21:53:03Z karl $
+$Id: README 74435 2025-03-04 17:01:16Z karl $
 Public domain.  Originally written 2005 by Karl Berry.
 
 Extra utilities we (optionally) compile for TeX Live.
 See comments in ../texk/README.
 
-asymptote 2.99 - checked 11feb25
-  update to TL from CTAN, to include prebuilt doc.
-  see https://tug.org/texlive/build.html#asymptote
+asymptote 3.01 - checked 24feb25
+  update TL from CTAN, to include prebuilt doc, Windows binaries, etc.
+  See https://tug.org/texlive/build.html#asymptote
   and tlpkg/bin/tl-update-asy
 
+  Special builders for asy:
+    aarch64-linux - Johannes Hielscher
+    *solaris, as well as darwinlegacy - Mojca
+    windows - from asy dist, including dlls
+
 autosp 2023-10-07 - checked 07jan24
   https://ctan.org/pkg/autosp
 

Modified: branches/stable/source/src/utils/configure
===================================================================
--- branches/stable/source/src/utils/configure	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/utils/configure	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for TeX Live utils 2025.
+# Generated by GNU Autoconf 2.72 for TeX Live utils 2026/dev.
 #
 # Report bugs to <tex-k at tug.org>.
 #
@@ -603,8 +603,8 @@
 # Identity of this package.
 PACKAGE_NAME='TeX Live utils'
 PACKAGE_TARNAME='tex-live-utils'
-PACKAGE_VERSION='2025'
-PACKAGE_STRING='TeX Live utils 2025'
+PACKAGE_VERSION='2026/dev'
+PACKAGE_STRING='TeX Live utils 2026/dev'
 PACKAGE_BUGREPORT='tex-k at tug.org'
 PACKAGE_URL=''
 
@@ -1471,7 +1471,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures TeX Live utils 2025 to adapt to many kinds of systems.
+'configure' configures TeX Live utils 2026/dev to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1542,7 +1542,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of TeX Live utils 2025:";;
+     short | recursive ) echo "Configuration of TeX Live utils 2026/dev:";;
    esac
   cat <<\_ACEOF
 
@@ -1839,7 +1839,7 @@
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-TeX Live utils configure 2025
+TeX Live utils configure 2026/dev
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -1999,7 +1999,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by TeX Live utils $as_me 2025, which was
+It was created by TeX Live utils $as_me 2026/dev, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -7617,7 +7617,7 @@
 
 # Define the identity of the package.
  PACKAGE='tex-live-utils'
- VERSION='2025'
+ VERSION='2026/dev'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -8614,7 +8614,7 @@
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by TeX Live utils $as_me 2025, which was
+This file was extended by TeX Live utils $as_me 2026/dev, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -8673,7 +8673,7 @@
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-TeX Live utils config.status 2025
+TeX Live utils config.status 2026/dev
 configured by $0, generated by GNU Autoconf 2.72,
   with options \\"\$ac_cs_config\\"
 

Modified: branches/stable/source/src/version.ac
===================================================================
--- branches/stable/source/src/version.ac	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/src/version.ac	2025-05-17 22:44:20 UTC (rev 964)
@@ -1,4 +1,4 @@
-dnl $Id: version.ac 73591 2025-01-25 18:41:15Z karl $
+dnl $Id: version.ac 74529 2025-03-08 18:17:45Z karl $
 dnl   Copyright 2016-2025 Karl Berry <tex-live at tug.org>
 dnl   Copyright 2010-2015 Peter Breitenlohner <tex-live at tug.org>
 dnl
@@ -9,4 +9,4 @@
 dnl --------------------------------------------------------
 dnl
 dnl  m4-include this file to define the current TeX Live version
-m4_define([tex_live_version], [2025])
+m4_define([tex_live_version], [2026/dev])

Modified: branches/stable/source/sync-pdftex.sh
===================================================================
--- branches/stable/source/sync-pdftex.sh	2025-05-13 16:07:59 UTC (rev 963)
+++ branches/stable/source/sync-pdftex.sh	2025-05-17 22:44:20 UTC (rev 964)
@@ -151,7 +151,8 @@
 After svn looks good, do make build (more needed updates may be discovered).
 make versionhelp will run --version and --help on the resulting binary.
 
-When the build looks good, commit.
+When the build looks good, commit, as in:
+  svn commit -m"sync from tl $rev"
 
 When the commit succeeds, do svn update afterward, due to removals.
 



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