[latex3-commits] [git/LaTeX3-latex3-latex2e] tracinglostchar: changed default for tracinglostchars (0bca9326)

[Frank Mittelbach]

Repository : https://github.com/latex3/latex2e
On branch  : tracinglostchar
Link       : https://github.com/latex3/latex2e/commit/0bca9326c9c39520c44a5c175b0698ac85868fa7

>---------------------------------------------------------------

commit 0bca9326c9c39520c44a5c175b0698ac85868fa7
Author: Frank Mittelbach <frank.mittelbach at latex-project.org>
Date:   Fri Jul 16 19:04:35 2021 +0200

    changed default for tracinglostchars


>---------------------------------------------------------------

0bca9326c9c39520c44a5c175b0698ac85868fa7
 base/changes.txt      |  6 ++++++
 base/doc/ltnews34.tex | 20 ++++++++++++++++++++
 base/ltplain.dtx      | 15 +++++++++++++--
 3 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/base/changes.txt b/base/changes.txt
index 0c399317..461b0b16 100644
--- a/base/changes.txt
+++ b/base/changes.txt
@@ -6,6 +6,12 @@ completeness or accuracy and it contains some references to files that
 are not part of the distribution.
 ================================================================================
 
+2021-07-16  Frank Mittelbach  <Frank.Mittelbach at latex-project.org>
+
+	* ltplain.dtx (section{Plain \TeX}):
+	Use 2 as value for \tracinglostchars so that one gets at least warnings
+	on the terminal (3 would be better as a missing char is an error).
+
 2021-07-11  Frank Mittelbach  <Frank.Mittelbach at latex-project.org>
 
 	* lterror.dtx (subsection{General commands}):
diff --git a/base/doc/ltnews34.tex b/base/doc/ltnews34.tex
index 8b1c20d0..a3386e3a 100644
--- a/base/doc/ltnews34.tex
+++ b/base/doc/ltnews34.tex
@@ -176,6 +176,26 @@ amsmath \cs{numberwithin}.
 \emph{write appropriate description}
   
 
+
+\subsection{New default for \cs{tracinglostchars}}
+
+In 2021 the \TeX{} engines got enhanced so that \cs{tracinglostchars}
+is supporting other values than zero and one.  It now accepts the
+values \texttt{2} (warning on the terminal) and \texttt{3} (error on
+the terminal). Using \texttt{3} would really be the best, but for
+compatibility reasons we only set it \texttt{2} in the kernel.
+However, we recommend to add \cs{tracinglostchars}\texttt{=3} to the
+preamble of documents because missing glyphs in the output are an
+error and should therefore be properly looked at.
+    
+Use 2 as value for
+\tracinglostchars so that one gets at least warnings on the terminal
+(3 would be better as a missing char is an error).
+
+
+
+
+
 \subsection{???}
 
 %
diff --git a/base/ltplain.dtx b/base/ltplain.dtx
index e0fbcecf..41dc3f57 100644
--- a/base/ltplain.dtx
+++ b/base/ltplain.dtx
@@ -32,7 +32,7 @@
 %<*driver>
 % \fi
 \ProvidesFile{ltplain.dtx}
-             [2021/04/18 v2.3f LaTeX Kernel (Plain TeX)]
+             [2021/07/16 v2.3g LaTeX Kernel (Plain TeX)]
 % \iffalse
 \documentclass{ltxdoc}
 \GetFileInfo{ltplain.dtx}
@@ -906,6 +906,7 @@
 \finalhyphendemerits=5000
 \adjdemerits=10000
 %    \end{macrocode}
+%    \begin{macrocode}
 % \looseness=0, cleared by TeX after each paragraph
 % \pausing=0
 % \holdinginserts=0
@@ -915,9 +916,19 @@
 % \tracingparagraphs=0
 % \tracingpages=0
 % \tracingoutput=0
+%    \end{macrocode}
+%    In the past \LaTeX{} used the value of \texttt{1} for
+%    \cs{tracinglostchar} because this was the best it could do.  This
+%    way one would at least get a warning in the \texttt{.log}
+%    file. In 2021 this parameter was improved on and now also accepts
+%    the values \texttt{2} (warning on the terminal) and \texttt{3}
+%    (error on the terminal). Using \texttt{3} would really be the
+%    best, but for compatibility reasons we only use \texttt{2}.
+% \changes{v2.3g}{2021/07/16}{Use 2 as value for \cs{tracinglostchars}}
 %    \begin{macrocode}
-\tracinglostchars=1
+\tracinglostchars=2
 %    \end{macrocode}
+%    \begin{macrocode}
 % \tracingcommands=0
 % \tracingrestores=0
 %    \end{macrocode}