texlive[52115] Master/texmf-dist: snapshot (18sep19)
commits+karl at tug.org
commits+karl at tug.org
Wed Sep 18 23:56:21 CEST 2019
Revision: 52115
http://tug.org/svn/texlive?view=revision&revision=52115
Author: karl
Date: 2019-09-18 23:56:20 +0200 (Wed, 18 Sep 2019)
Log Message:
-----------
snapshot (18sep19)
Modified Paths:
--------------
trunk/Master/texmf-dist/doc/latex/snapshot/snapshot.pdf
trunk/Master/texmf-dist/source/latex/snapshot/snapshot.dtx
trunk/Master/texmf-dist/source/latex/snapshot/snapshot.ins
trunk/Master/texmf-dist/tex/latex/snapshot/snapshot.sty
Added Paths:
-----------
trunk/Master/texmf-dist/doc/latex/snapshot/README
Added: trunk/Master/texmf-dist/doc/latex/snapshot/README
===================================================================
--- trunk/Master/texmf-dist/doc/latex/snapshot/README (rev 0)
+++ trunk/Master/texmf-dist/doc/latex/snapshot/README 2019-09-18 21:56:20 UTC (rev 52115)
@@ -0,0 +1,17 @@
+README for snapshot 2019/09/17
+https://www.ams.org/arc/resources/snapshot-about.html
+tech-support at ams.org
+
+The snapshot package helps the owner of a LaTeX document
+obtain a list of the external dependencies of the document, in a
+form that can be embedded at the top of the document. To put it
+another way, it provides a snapshot of the current processing
+context of the document, insofar as it can be determined from
+inside LaTeX.
+
+Originally written by Michael J. Downes, the snapshot package
+is currently maintained by the American Mathematical Society.
+
+This work may be distributed and/or modified under the
+conditions of the LaTeX Project Public License, either version 1.3c
+of this license or (at your option) any later version.
Property changes on: trunk/Master/texmf-dist/doc/latex/snapshot/README
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Modified: trunk/Master/texmf-dist/doc/latex/snapshot/snapshot.pdf
===================================================================
(Binary files differ)
Modified: trunk/Master/texmf-dist/source/latex/snapshot/snapshot.dtx
===================================================================
--- trunk/Master/texmf-dist/source/latex/snapshot/snapshot.dtx 2019-09-18 21:53:06 UTC (rev 52114)
+++ trunk/Master/texmf-dist/source/latex/snapshot/snapshot.dtx 2019-09-18 21:56:20 UTC (rev 52115)
@@ -1,50 +1,55 @@
-%%% ====================================================================
-%%% @LaTeX-doc-source-file{
-%%% filename = "snapshot.dtx",
-%%% version = "1.14",
-%%% date = "2002/03/05",
-%%% time = "15:29:00 EST",
-%%% checksum = "39090 807 3449 29761",
-%%% author = "American Mathematical Society",
-%%% copyright = "Copyright 2001 American Mathematical Society,
-%%% all rights reserved. Copying of this file is
-%%% authorized only if either:
-%%% (1) you make absolutely no changes to your copy,
-%%% including name; OR
-%%% (2) if you do make changes, you first rename it
-%%% to some other name.",
-%%% address = "American Mathematical Society,
-%%% Electronic Products and Services,
-%%% PO Box 6248,
-%%% Providence, RI 02940,
-%%% USA",
-%%% email = "tech-support at ams.org",
-%%% URL = "http://www.ams.org/",
-%%% supported = "yes",
-%%% keywords = "version, compatibility, dependencies, LaTeX",
-%%% abstract = "This package provides a way for a LaTeX
-%%% document to specify, for each external file
-%%% on which the document depends, which version
-%%% is required to guarantee output fidelity.",
-%%% docstring = "The checksum field above contains a CRC-16
-%%% checksum as the first value, followed by the
-%%% equivalent of the standard UNIX wc (word
-%%% count) utility output of lines, words, and
-%%% characters. This is produced by Robert
-%%% Solovay's checksum utility.",
-%%% }
-%%% ====================================================================
+% \def\filename{snapshot.dtx}
+% \def\fileversion{2.13}
+% \def\filedate{2012/08/06}
+%
+% \iffalse meta-comment
+%
+% American Mathematical Society
+% Technical Support
+% Publications Technical Group
+% 201 Charles Street
+% Providence, RI 02904
+% USA
+% tel: (401) 455-4080
+% (800) 321-4267 (USA and Canada only)
+% fax: (401) 331-3842
+% email: tech-support at ams.org
+%
+% Copyright 1999-2003, 2004, 2010, 2012 American Mathematical Society.
+%
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3c
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+% http://www.latex-project.org/lppl.txt
+% and version 1.3c or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status `maintained'.
+%
+% The Current Maintainer of this work is the American Mathematical
+% Society.
+%
+% \fi
+%
% \iffalse
%<*driver>
\NeedsTeXFormat{LaTeX2e}
-\documentclass{amsdtx}
+\documentclass[oneside]{amsdtx}
\providecommand{\qq}[1]{\textquotedblleft#1\textquotedblright}
-\providecommand{\mdash}{\textemdash}
+\providecommand{\mdash}{\textemdash\penalty\exhyphenpenalty}
+\providecommand{\lat}[1]{\protect\LaTeX{}}
+\providecommand{\strong}[1]{\textbf{#1}}
+\providecommand{\secref}[1]{Section~\ref{#1}}
+
+\CodelineIndex
+
\begin{document}
\title{The \pkg{snapshot} package}
\author{American Mathematical Society\\Michael Downes}
\date{Version \fileversion, \filedate}
-\hDocInput{snapshot.dtx}
+\DocInput{snapshot.dtx}
+\PrintIndex
\end{document}
%</driver>
% \fi
@@ -82,7 +87,9 @@
% \end{verbatim}
%
% \item Run \latex/ on the document. This will produce a dependency
-% list in a file \verb'\jobname.dep'.
+% list in a file \verb'\jobname.dep'. (I.e., if the document name is
+% \fn{vermont.ltx}, the dependency list will be named
+% \fn{vermont.dep}.)
%
% \item Insert the \fn{.dep} file at the top of the document, before
% \cn{documentclass}. The following example shows what you would end
@@ -132,7 +139,9 @@
% the dependency list, but standard \tex/ 3.x does not provide direct
% access to font checksums for macro programmers. This information
% could be added by a separate script that scans the DVI file.
+% (Certain nontrivial complications are possible, however.)
%
+% \section{Graphics files}
% When a graphics file is read in by a \latex/ document using the
% standard \cn{includegraphics} command, it gets a dummy version
% number string of
@@ -153,10 +162,12 @@
% It would be possible, for \fn{.eps} files at least, to read the
% CreationDate comment that is normally included in the file header
% and use that as the basis of comparison. Recording the bounding box
-% numbers instead of a dummy version number would also be a possibly
-% useful stratagem. But I have left these possibilities untouched for
-% the time being [mjd,2001-05-14].
+% numbers instead of a dummy version number is another possibility,
+% which you can get with the
+% \opt{bbinfo} option (as of \pkg{snapshot} version 2.05).
%
+% \section{Formalities}
+%
% \DescribeMacro{\RequireVersions} The \cn{RequireVersions} command
% scans its argument for file names and associated version number
% information. The syntax of a version line for a particular file is
@@ -182,14 +193,31 @@
% \opt{tfm} to turn on the logging of metric files. (Not yet
% implemented [mjd,1999/09/23])
%
-% \item[format] This is almost always \fn{LaTeX2e}. Other possibilities
-% would be \fn{elatex} or \fn{lambda}. The information comes from
-% \cs{fmtname}.
-% \item[application] This is usually \fn{TeX} with version number
-% \fn{3.x}. From inside \latex/ there is no reliable way to get the
-% exact version number (one could check to see if version 2.x is in
-% use, but this is unlikely to be relevant, nowadays, so I have not
-% bothered).
+% \item[format] This is almost always \fn{LaTeX2e}. The information
+% comes from \cs{fmtname}. Lambda, e\LaTeX{}, and pdf\LaTeX{} leave
+% \cs{fmtname} unchanged, and although this may seem dubious at first
+% sight, I guess they have little choice: the widespread use of
+% \cs{NeedsTeXFormat} in existing package files makes them produce an
+% error message if \cs{fmtname} is changed. (Maybe the thing to do
+% would be to modify the definition of \cs{NeedsTeXFormat} as well.)
+%
+% For a \LaTeX{} format that uses the Babel mechanism for preloading
+% hyphenation patterns, the version number of \fn{babel.def} that was
+% used in building the format might be of interest. But at first
+% glance there does not seem to be any easy way of dealing with that,
+% and in the normal course of things, a document that relies on Babel
+% features will also have a \verb'\usepackage{babel}' statement at
+% the top, and that will yield adequate (I think) information for the
+% snapshot dependency list.
+%
+% \item[application] With standard \fn{TeX} there is no reliable way to
+% get the exact version number from inside \LaTeX{}. If a document is
+% processed with one of the recent variants that address this
+% deficiency (such as e-\TeX{}, pdf\TeX{} and Omega) the available
+% version info is used, but otherwise a presumptive value of
+% \verb'1990/03/25 v3.x' is used (the official release date of \TeX{}
+% 3.0).
+%
% \item[file] None of the above: some other file of miscellaneous type,
% e.g., \fn{.clo}, \fn{.cfg}, \fn{.tex}, or \fn{.def}.
% \end{description}
@@ -200,8 +228,25 @@
% assign a label to particular groups of files in case that helps
% with external processing.
%
-% \section{Warning and error options}
+% \section{Package options}
%
+% The list of options supported by the \pkg{snapshot} package is as
+% follows:
+% \begin{center}\begin{tabular}{lll}
+% dep & date\\
+% log & version\\
+% tfm & major-version\\
+% warning & bbinfo \\
+% error & test \\
+% self-warning
+% \end{tabular}
+% \end{center}
+%
+% \begin{description}
+% \item[dep, log] Write file date and version information to
+% \textit{jobname}\fn{.dep} or to the \LaTeX{} log file, respectively.
+%
+% \item[error, warning, self-warning]
% If the \pkg{snapshot} package is invoked with the \opt{error}
% option \emph{and also} the document contains a \cn{RequireVersions}
% statement, then each subsequent \cn{ProvidesFile},
@@ -219,13 +264,69 @@
% comparing.
% \end{description}
%
+% The \opt{self-warning} causes a warning to be given, instead of an
+% error, if the \pkg{snapshot} package itself has a date or
+% version mismatch.
+%
% \textbf{Note:} A file that doesn't have any sort of
% \cn{ProvidesFile} or \cn{ProvidesPackage} statement in it will show
% up in the dependency list, with a dummy date and version number of
-% 0000/00/00 v0.0, but there is no way, of course, to give any
-% meaningful warning or error message about version mismatches for
-% such a file.
+% 0000/00/00 v0.0, but testing for a version mismatch with such a
+% file is then infeasible.
%
+% \item[bbinfo] For files of type ``graphic'', include bounding-box info
+% as the ``version number''. A normal date and version number are
+% seldom available for such files, and \LaTeX{} does not attempt
+% to read them, which means that the \pkg{snapshot} package could not
+% obtain the information except by drastically modifying the
+% low-level \LaTeX{} operations that read graphics file
+% information\mdash which seems overly risky.
+%
+% \item[tfm] \emph{Not implemented yet!} Include information about which
+% \TeX{} font metric files are called by \LaTeX{}. This list is
+% usually somewhat different from the list of fonts that are actually
+% used in the output file (\fn{.dvi} or \fn{.pdf}), primarily because
+% the setup for math formulas will normally preload font metric
+% information for all the fonts from which \LaTeX{}'s basic math
+% symbols are drawn (the symbols documented in the \LaTeX{} book),
+% even if the document does not use symbols from all of those fonts.
+%
+% \item[test] This option is for a special purpose. It drastically
+% changes the action of the \cs{RequireVersions} command so that it
+% does not merely record the information for later reference, but
+% does a \qq{trial load attempt} for each file in the list, and then
+% stops the \LaTeX{} job as soon as the list is finished, without
+% continuing any further.
+%
+% By \qq{trial load attempt} I mean that the \cs{RequireVersions}
+% command will actually input each file, but with various bits
+% redefined so that \cs{ProvidesPackage} and variants will execute
+% \cs{endinput}\mdash in other words, only the first few lines of
+% each file will be read.
+%
+% What this means, practically speaking, is that if you run such a
+% test on a document, it gives a relatively quick check on two useful
+% pieces of information without having to retypeset the entire
+% document (which for some documents might be very tedious)
+% \begin{enumerate}
+% \item The actual location on your system from which the file will be
+% loaded.
+%
+% \item The date and version info from \cs{Provides...} line, if present.
+% \end{enumerate}
+%
+% Similar results could be obtained by a combination of
+% \fn{kpsewhich} and \fn{grep}, but because the \pkg{snapshot} \opt{test}
+% option works through \LaTeX{}, it is a system-independent method.
+%
+% Caveat: If a file does not contain any \cs{ProvidesSomething} line,
+% it will be read in its entirety, which might lead to errors. Or if
+% there is any weird stuff preceding the \cs{ProvidesWhatever} line.
+% But for well-behaved files the option seemed useful enough to be
+% worth implementing.
+%
+% \end{description}
+%
% \StopEventually{}
%
% \section{Implementation}
@@ -232,13 +333,9 @@
% Standard declaration of package name and date.
% \begin{macrocode}
\NeedsTeXFormat{LaTeX2e}[1994/12/01]
-\ProvidesPackage{snapshot}[2002/03/05 v1.14]
+\ProvidesPackage{snapshot}[2012/08/06 v2.13]
% \end{macrocode}
%
-% \begin{macrocode}
-\let\@xp\expandafter \let\@nx\noexpand
-% \end{macrocode}
-%
% Calling the \pkg{snapshot} package in a document causes \latex/ to
% list the file names and versions in the \tex/ log or in a \fn{.dep}
% file, so that the information may be easily copied into the
@@ -260,12 +357,32 @@
% available; if the second piece is not present, a dummy number
% \verb'0.0' is supplied. Similarly, files that don't include any
% \cn{ProvidesWhatever} statement will get a dummy date of
-% \verb'0000/00/00'; \tex/ system administrators who want to ensure
+% \verb'0000/00/00';
+% \begin{center}\begin{minipage}{.9\columnwidth}\bfseries
+% \medskip
+% \tex/ system administrators who want to ensure
% maximal accuracy of the snapshot information should therefore make
% it a practice to use \cn{ProvidesFile} in \fn{.cfg} files and other
% local files that might have an impact on the output fidelity of
% their documents.
+% \end{minipage}\end{center}
%
+% A couple of shorthand forms.
+% \begin{macrocode}
+\let\@xp=\expandafter \let\@nx=\noexpand
+% \end{macrocode}
+%
+% A function to compare two strings and return FT or TT (for use with
+% \cs{if}).
+% \begin{macrocode}
+\def\str at cmp#1#2\str at cmp#3{%
+ \if #1#3\else F\@car\fi \str at cmp#2\str at cmp
+}
+\def\string at equal#1#2{%
+ \str at cmp#1\relax\str at cmp#2{\relax\@gobbletwo}\@nil TT%
+}
+% \end{macrocode}
+%
% \begin{macro}{\RequireVersions}
%
% Optional argument of \cn{RequireVersions} allows assigning a name to a
@@ -272,15 +389,47 @@
% particular collection of files. This might be useful for setting a
% \tex/ inputs path.
% \begin{macrocode}
-\newcommand{\RequireVersions}[2][]{%
- \let\snap at check\snap at compare@versions
- \let\snap at selfcheck\snap at selfcheck@a
- \@ifnextchar *\snap at store@version\snap at store@error#2*{end}{}{}%
+\newcommand{\RequireVersions}[2][]{}%
+\renewcommand{\RequireVersions}[1][]{%
+ \def\snap at check{\snap at compare@versions}%
+ \toks@{#1}\afterassignment\snap at storem
+ \let\@let at token=
}
+\def\snap at storem{%
+ \ifx\@let at token\bgroup
+ \else
+ \PackageError{snapshot}{Expected a `\@charlb' character here}\@ehc
+ \@xp\@gobblefour
+ \fi
+ \futurelet\@let at token\snap at branch
+}
\@onlypreamble\RequireVersions
% \end{macrocode}
%
% \begin{macrocode}
+\let\snap at check\@gobble
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\snap at finish{\toks@\bgroup}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\snap at branch{%
+ \ifx\@let at token\egroup
+ \@xp\snap at finish
+ \else\ifx\@let at token *%
+ \let\reserved at c\snap at store@version
+ \else\ifx\@let at token\@sptoken
+ \lowercase{\def\reserved at c} {\futurelet\@let at token\snap at branch}%
+ \else
+ \let\reserved at c\snap at store@error
+ \fi\fi\fi
+ \reserved at c
+}
+% \end{macrocode}
+%
+% \begin{macrocode}
\def\snap at store@error#1{%
\PackageError{snapshot}{Expected '*' here, not '#1'}\@ehc
}
@@ -294,7 +443,49 @@
\@onlypreamble\snap at store@version
% \end{macrocode}
%
+% Detection of e-\LaTeX{}, pdf\LaTeX{}, pdfe\LaTeX{}, and Lambda
+% [Omega]:
% \begin{macrocode}
+\ifx\OmegaVersion\@@undefined
+\else
+ \edef\snapshotApplication{%
+ {Omega}\space\space\space
+ {0000/00/00 v\OmegaVersion}%
+ }%
+\fi
+\ifx\eTeXversion\@@undefined
+\else
+ \edef\snapshotApplication{%
+ {eTeX}\space\space\space\space
+ {0000/00/00 v\number\eTeXversion\eTeXrevision}%
+ }%
+\fi
+\ifx\pdftexversion\@@undefined
+\else
+ \edef\snapshotApplication{%
+ \ifx\eTeXversion\@@undefined
+ {pdfTeX}\space\space
+ \else
+ {pdfeTeX}\space
+ \fi
+ {0000/00/00 v0.\number\pdftexversion\pdftexrevision}%
+ }%
+\fi
+% \end{macrocode}
+% If none of the above information is available, the exact version
+% number of \TeX{} is not accessible from inside \latex/. We then
+% fall back to using a nominal date of 1990/03/25, which is when
+% version 3.0 of \fn{tex.web} was released by Knuth.
+% \begin{macrocode}
+\@ifundefined{snapshotApplication}{%
+ \edef\snapshotApplication{%
+ {TeX}\space\space\space\space\space
+ {1990/03/25 v3.x}%
+ }%
+}{}
+% \end{macrocode}
+%
+% \begin{macrocode}
\def\@fmtextension{fmt}
\def\@tfmextension{tfm}
\edef\snapx at package{.\@pkgextension}
@@ -301,9 +492,11 @@
\edef\snapx at class{.\@clsextension}
\edef\snapx at format{.\@fmtextension}
\edef\snapx at tfm{.\@tfmextension}
-\long\def\snapx at application{}
-\let\snap at file=\@empty
+\long\def\snapx at ignore{}
+\let\snapx at application=\snapx at ignore
+\let\snapx at file=\@empty
\let\snapx at end\@@end
+\expandafter\let\csname snapx at -------\endcsname\snapx at end
% \end{macrocode}
%
% For a package named \fn{foo.sty}, this function defines
@@ -311,7 +504,7 @@
% \begin{macrocode}
\def\snap at store@b#1#2#3#4{%
\ifx#1\snapx at end
- \@xp\@gobblefour
+ \@xp\snap at finish
\else
\ifx#1\relax \let#1\@empty\fi
\def\@tempa##1 ##2 ##3\@nil{##1 ##2}%
@@ -319,18 +512,23 @@
%
% \begin{macrocode}
\ifx#1\snapx at application
+ \@xp\xdef\csname rqv@#3#1\endcsname{\@tempa#4 v?.? ? \relax\@nil}%
\else
- \xdef\rqv at list{\rqv at list
- \ifx\@empty\rqv at list\else,\fi
- #3#1%
- }%
+ \xdef\rqv at list{\rqv at list{#3#1}}%
+ \@xp\xdef\csname rqv@#3#1\endcsname{\@tempa#4 v?.? ? \relax\@nil}%
+ \snap at intest{#3}{#1}%
+ \ifx#1\snapx at format \snap at check{#3.fmt}%
+% \end{macrocode}
+% Test if current file is \fn{snapshot.sty}. Need to pre-expand the
+% extension part to ensure the test is correct.
+% \begin{macrocode}
+ \else
+ \edef\@tempa{\@nx\string at equal{snapshot.sty}{#3#1}}%
+ \if\@tempa \snap at selfcheck \fi
+ \fi
\fi
- \@xp\xdef\csname rqv@#3#1\endcsname{\@tempa#4 v?.? ? \relax\@nil}%
- \ifx#1\snapx at format \snap at check{#3.fmt}%
- \else \snap at selfcheck{#3.sty}%
- \fi
\fi
- \@ifnextchar *\snap at store@version\snap at store@error
+ \futurelet\@let at token\snap at branch
}
\@onlypreamble\snap at store@b
% \end{macrocode}
@@ -356,21 +554,11 @@
% \end{macrocode}
%
% The purpose of the `test' option is to support a separate testing
-% procedure that resolves file names. If the \cs{RequireVersions}
-% data is extracted to a separate file, and
-%\begin{verbatim}
-%\RequirePackage[test]{snapshot}
-%\end{verbatim}
-% is added at the top, then the file can be run as a small separate
-% \LaTeX{} job whose sole purpose is to produce in the log file a
-% nice list of fully resolved file names. A limited, but
-% system-independent variant of the \fn{kpsewhich} idea.
-%
+% procedure for resolving file names and pre-checking version
+% numbers. See \secref{test} for more information.
% \begin{macrocode}
-\let\snap at fake@b\relax
-\DeclareOption{test}{%
- \def\snap at fake@b{\endinput \futurelet\@let at token\snap at ignoline}%
-}
+\let\snap at intest=\@gobbletwo
+\DeclareOption{test}{\def\snap at intest{True}}
% \end{macrocode}
%
% For each font used by a document, we would like to list the
@@ -402,6 +590,7 @@
% \begin{macrocode}
\DeclareOption{error}{%
\def\snap at mismatch{\PackageError}%
+ \def\snap at selfcheck{\snap at selfcheck@a}%
\ifx\snap at select\@empty \let\snap at select\snap at select@all \fi
}
% \end{macrocode}
@@ -409,26 +598,35 @@
% \begin{macrocode}
\DeclareOption{warning}{%
\def\snap at mismatch{\snap at mismatch@warning}%
+ \def\snap at selfcheck{\snap at selfcheck@a}%
\ifx\snap at select\@empty \let\snap at select\snap at select@all \fi
}
% \end{macrocode}
%
% Because the exact form of the version number is not mandated by
-% LaTeX, just take the first two ``words'' delimited by spaces. And
-% take a little extra care to properly handle multiple spaces between
-% the words.
+% \LaTeX{}, just take the first two ``words'' delimited by spaces.
+% And take a little extra care to properly handle multiple spaces
+% between the words.
% \begin{macrocode}
\def\snap at select@all#1#2 #3#4 #5\@nil{#1#2 #3#4}
\let\snap at select\@empty
% \end{macrocode}
%
+% If the naming conventions seem a little peculiar here, it's because
+% I had to add some pieces later that I didn't think of initially,
+% and I wanted to minimize the chances of compatibility problems for
+% client packages [mjd,2002-11-04].
% \begin{macrocode}
-\DeclareOption{date}{%
- \def\snap at select#1#2 #3\@nil{#1#2}%
-}
+\def\snap at seldate#1#2 #3\@nil{#1#2}%
+\def\snap at selversion#1#2 #3{\snap at select@version #3}%
+\def\snap at selmajor#1#2 #3{\snap at select@major #3}%
% \end{macrocode}
%
% \begin{macrocode}
+\DeclareOption{date}{\let\snap at select=\snap at seldate}
+% \end{macrocode}
+%
+% \begin{macrocode}
\def\snap at select@version#1{%
\ifodd 0#11 \@xp\snap at sva\@xp#1\else\@xp\snap at select@version\fi
}
@@ -440,19 +638,45 @@
% \end{macrocode}
%
% \begin{macrocode}
-\DeclareOption{version}{%
- \def\snap at select#1#2 #3{\snap at select@version #3}%
+\DeclareOption{version}{\let\snap at select\snap at selversion}
+\DeclareOption{major-version}{\let\snap at select\snap at selmajor}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\snap at bbinfo{01}
+\DeclareOption{bbinfo}{\def\snap at bbinfo{00}}
+% \end{macrocode}
+%
+% Give this an inert definition, for the time being, until we are
+% ready to do the split.
+% \begin{macrocode}
+\let\snap at splitter=?
+\AtBeginDocument{%
+ \xdef\@filelist{\@filelist\snap at splitter}%
}
% \end{macrocode}
%
% \begin{macrocode}
-\DeclareOption{major-version}{%
- \def\snap at select#1#2 #3{\snap at select@major #3}%
+\let\snap at selfcheck\@empty
+\let\snap at selfcheck@a\@empty
+% \end{macrocode}
+%
+% The \opt{self-warning} option would normally be used in conjunction
+% with the \opt{error} option.
+% \begin{macrocode}
+\DeclareOption{self-warning}{%
+ \def\snap at selfcheck{%
+ \begingroup
+ \def\snap at mismatch{\snap at mismatch@warning}%
+ \snap at selfcheck@a
+ \endgroup
+ }
}
% \end{macrocode}
%
% \begin{macrocode}
-\ProcessOptions\par
+\ExecuteOptions{warning}
+\ProcessOptions\relax
% \end{macrocode}
%
% We need the following patch to make up for the fact that
@@ -510,54 +734,36 @@
v\ifx\@tempc\fmtname 2.e\else ?.?\fi
}%
\fi
+% \end{macrocode}
+% Ensure that files get recorded.
+% \begin{macrocode}
\listfiles
-\def\@dofilelist{%
- \snap at restore@extensions
- \ifx\rqv at list\@empty
- \else \rqv at compare@lists
- \fi
- \ifx\snap at write\typeout
- \else
- \newwrite\snap at out
- \immediate\openout\snap at out=\jobname.dep \relax
- \fi
- \snap at write{\string\RequireVersions\@charlb}%
% \end{macrocode}
-% Since the exact version number of \TeX{} is not normally accessible
-% from inside \latex/, we use a nominal date of 1990/03/25, which is
-% when version 3.0 of \fn{tex.web} was released by Knuth.
+%
% \begin{macrocode}
- \snap at write{\space\space *{application}{TeX}%
- \space\space\space\space\space{1990/03/25 v3.x}}%
- \@for\@currname:=\@filelist\do{%
- \filename at parse\@currname
+\def\snap at doit#1{%
+ \begingroup
+ \ifx\delimiter#1\delimiter
+ \else
+ \filename at parse{#1}%
+ \let\@tempd\@empty
\ifx\filename at ext\relax
- \def\@tempa{file}\def\@tempd{.tex}\def\filename at ext{tex}%
- \def\@tempb{~~~}%
+ \def\@tempa{file}\def\@tempb{~~~}%
\else\ifx\filename at ext\@pkgextension
- \def\@tempa{package}\let\@tempd\@empty
- \def\@tempb{}%
+ \def\@tempa{package}\let\@tempb\@empty
\else\ifx\filename at ext\@clsextension
- \def\@tempa{class}\let\@tempd\@empty
- \def\@tempb{~~}%
+ \def\@tempa{class}\def\@tempb{~~}%
\else\ifx\filename at ext\@fmtextension
- \def\@tempa{format}\let\@tempd\@empty
- \def\@tempb{~}%
+ \def\@tempa{format}\def\@tempb{~}%
\else\ifx\filename at ext\@tfmextension
- \def\@tempa{tfm}\let\@tempd\@empty
- \def\@tempb{~~~~}%
+ \def\@tempa{tfm}\def\@tempb{~~~~}%
\else
\def\@tempa{file}\edef\@tempd{.\filename at ext}%
\def\@tempb{~~~}%
\fi\fi\fi\fi\fi
\@xp\let\@xp\@tempe
- \csname ver@\filename at base.\filename at ext\endcsname
-% \end{macrocode}
-% If a file contains just \verb'\ProvidesFoo{xyz}' without \emph{any}
-% optional argument, then \cs{ver at xyz} ends up empty. Resetting it to
-% \cs{relax} is the easiest way to get the fallback version
-% number in that case also.
-% \begin{macrocode}
+ \csname ver@\filename at base %
+ \ifx\filename at ext\relax\else.\filename at ext\fi\endcsname
\ifx\@tempe\@empty \let\@tempe\relax \fi
\edef\@tempe{%
\ifx\@tempe\relax 0000/00/00 v0.0%
@@ -567,10 +773,91 @@
}%
\edef\@tempc{\filename at area\filename at base\@tempd}% full file name
\@xp\snap at pad\@tempc\space~~~~~~~~~~~~~~~~\@nil\@tempd
- \begingroup \let~\space
- \snap at write{\space\space *{\@tempa}\@tempb{\@tempc}\@tempd{\@tempe}}%
- \endgroup
+ \let~\space
+ \snap at write{\space\space *{\@tempa}\@tempb{\@tempc}\@tempd{\@tempe}}%
+ \fi
+ \aftergroup\snap at doit
+ \endgroup
+}%
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\snap at bracify#1#2,{%
+ \ifx\@empty#1\expandafter\@gobble\else {#1#2}\fi \snap at bracify
+}
+\def\snap at splitter@a{%
+ \iffalse{{\fi }}% close current file name, end definition
+ \xdef\specific at files{%
+ \iffalse}\fi
+ \specific at files
+ \expandafter\@gobble\string % discard one closing brace
+}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\snap at fdcheck#1{%
+ \ifx\delimiter#1\@xp\@gobble
+ \else\snap at fda#1\@empty.fd\@empty ?\@nil
+ \fi
+ \snap at fdcheck
+}
+\def\snap at fda#1.fd\@empty#2#3\@nil{%
+ \if ?#2%
+ \xdef\specific at files{\specific at files {#1}}%
+ \else
+ \xdef\general at files{\general at files {#1.fd}}%
+ \fi
+}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\let\general at files\@empty
+\let\specific at files\@empty
+% \end{macrocode}
+%
+% The \cn{SpecialInput} command is related to the \opt{packages-only}
+% option. Apart from some ad hoc handling for \fn{.fd} files that get
+% loaded on demand, all files that are input after
+% \verb'\begin{document}' are put into the specific-files list, and
+% all files before \verb'\begin{document}' go into the general-files
+% (packages-only) list. If there is a macro file for a book (say),
+% that contains definitions specific to that book, and that is loaded
+% in the preamble, loading it with \cs{SpecialInput} will cause it to
+% go in the specific-files list.
+% \begin{macrocode}
+\newcommand{\SpecialInput}[1]{%
+ \xdef\specific at files{\specific at files{#1}}%
+ \@@input#1\relax
+}
+% \end{macrocode}
+%
+% Our definition of \cs{@dofilelist} does not retain much resemblance
+% to the original in the \LaTeX{} kernel.
+% \begin{macrocode}
+\def\@dofilelist{%
+ \snap at restore@extensions
+ \xdef\general at files{\@xp\snap at bracify \@filelist \@empty,\@empty,}%
+ \let\snap at splitter\snap at splitter@a
+ \xdef\general at files{\general at files}%
+ \let\@tempa\specific at files \global\let\specific at files\@empty
+ \@xp\snap at fdcheck\@tempa{\delimiter}%
+ \ifx\rqv at list\@empty
+ \else \rqv at compare@lists
+ \fi
+ \ifx\snap at write\typeout
+ \else
+ \newwrite\snap at out
+ \immediate\openout\snap at out=\jobname.dep \relax
+ \fi
+ \snap at write{\string\RequireVersions\@charlb}%
+ \snap at write{\space\space *{application}%
+ \snapshotApplication
}%
+ \@xp\snap at doit\general at files{\delimiter\aftergroup\@gobble\@gobble}%
+ \ifx\specific at files\@empty
+ \else
+ \snap at specific
+ \fi
\snap at write{\@charrb}%
\ifx\snap at write\typeout
\else \immediate\closeout\snap at out
@@ -579,102 +866,86 @@
}%
% \end{macrocode}
%
+% \begin{macrocode}
+\def\snap at specific{%
+ \snap at write{ \space *{-------}{Document-specific files:}{----}}%
+ \@xp\snap at doit\specific at files{\delimiter\aftergroup\@gobble\@gobble}%
+}
+% \end{macrocode}
+%
% The \cs{rqv at compare@lists} function checks to see if any files
-% are found only in the RequireVersions list or only in
-% \cs{@filelist}. To see which files are only in \cs{@filelist}, we
-% map the \cs{rqv at condense} function across both lists, reinitializing
-% \cs{L} (used here as a scratch variable) in between. As a side
-% effect this leaves the desired file names in \cs{L}. Then the same
-% process with the order of the lists reversed tells us which ones
-% are only in \cs{rqv at list}.
+% are found only in the RequireVersions list or only in the
+% \cs{general at files} list.
% \begin{macrocode}
-\def\rqv at condense#1,{%
- \if ,#1,%
+\def\rqv at condense#1{%
+ \@xp\ifx\csname ver@#1\endcsname\N
\else
- \@xp\ifx\csname ver@#1\endcsname\N
- \else
- \edef\L{\L,#1}%
- \@xp\let\csname ver@#1\endcsname=\N
- \fi
+ \edef\L{\L{#1}}%
+ \@xp\let\csname ver@#1\endcsname=\N
\fi
\rqv at condense
}
+\def\rqv at condend{\endcsname ?\fi
+ \@xp\@xp\@xp\@gobbletwo\csname @xp\iftrue}
% \end{macrocode}
%
% \begin{macrocode}
-\def\rqv at compare@lists{%
- \begingroup
- \def\N{1}\let\L=\@gobble
- \@xp\rqv at condense \rqv at list,TeX,{,\relax\@xp\@gobbletwo\@xp},%
- \ifx\L\@gobble\let\L\@empty\fi
- \let\rqv at list=\L
- \let\L=\@gobble
- \@xp\rqv at condense \@filelist,{,\relax\@xp\@gobbletwo\@xp},%
- \ifx\L\@gobble\let\L\@empty\fi
- \@for\@currname:=\L\do{%
- \snap at mismatch{snapshot}{^^J%
- File \@currname\space loaded though not in
- \noexpand\RequireVersions list%
- }\@ehc
- }%
- \def\N{2}\let\L=\@gobble
- \@xp\rqv at condense\@filelist,TeX,{,\relax\@xp\@gobbletwo\@xp},%
- \let\L=\@gobble
- \@xp\rqv at condense\rqv at list,{,\relax\@xp\@gobbletwo\@xp},%
- \ifx\L\@gobble\let\L\@empty\fi
- \@for\@currname:=\L\do{%
- \snap at mismatch{snapshot}{^^J%
- File \@currname\space [\csname rqv@\@currname\endcsname]
- required but not loaded%
- }\@ehc
- }%
- \endgroup
+\def\rqv at overloaded#1{%
+ \snap at mismatch{snapshot}{^^J%
+ File #1 loaded though not in \noexpand\RequireVersions list%
+ }\@ehc
}
% \end{macrocode}
%
-% See the documentation above for the `test' option.
% \begin{macrocode}
-\begingroup \catcode\endlinechar=12\relax %
-\long\gdef\snap at ignoline#1
-{}\endgroup %
+\def\rqv at notloaded#1{%
+ \snap at mismatch{snapshot}{^^J%
+ File #1 [\csname rqv@#1\endcsname] required but not loaded%
+ }\@ehc
+}
% \end{macrocode}
%
% \begin{macrocode}
-\def\snap at fake@input#1#2#3#4{%
- \ifx#1\snapx at end
- \aftergroup\@@end \@xp\@gobblefour
- \else
- \ifx#1\snapx at format
- \else
- \message{^^J}%
- \@xp\snap at fake@b\@@input #3#1\relax
- \fi
- \fi
- \@ifnextchar *\snap at store@version\snap at store@error
-}
+\def\rqv at set#1{\@xp\let\csname ver@#1\endcsname\N \rqv at set}
+\def\rqv at test#1{\csname ver@#1\endcsname{#1}\rqv at test}
% \end{macrocode}
%
% \begin{macrocode}
-\newcommand{\rqvTest}[2][]{%
- \begingroup \catcode\endlinechar=12
- \catcode`\%=12 \catcode`\{=12 \catcode`\}=12\relax
+\def\rqv at compare@lists{%
+ \begingroup
% \end{macrocode}
-% Since \cs{snap at fake@input} just compares \cs{snapx at foo} with
-% \cs{ifx}, making \cs{snapx at application}
-% and \cs{snapx at tfm} compare equal to \cs{snap at format}
-% ensures that only one comparison is needed to tell if
-% we shouldn't attempt to input the current file type.
+% Clear up duplicate file names (just in case) to avoid redundant
+% warning messages. This should seldom be necessary in practice.
% \begin{macrocode}
- \let\snapx at application=\snapx at format \let\snapx at tfm=\snap at format
- \@ifnextchar *\snap at store@version\snap at store@error#2*{end}{}{}%
- \endgroup
-}
+ \def\N{1}\let\L\@empty
+ \@xp\rqv at condense\rqv at list\rqv at condend
+ \global\let\rqv at list=\L
+ \def\N{2}\let\L\@empty
+ \@xp\rqv at condense\general at files\rqv at condend
+ \global\let\general at files=\L
% \end{macrocode}
-%
+% Let's make a shorthand for the code that terminates our recursion.
% \begin{macrocode}
-\@ifundefined{snap at fake@b}{}{%
- \let\snap at store@b\snap at fake@input
- \let\RequireVersions\rqvTest
+ \def\T{\@firstoftwo{\endcsname\@empty\@gobbletwo}}%
+% \end{macrocode}
+% Set all the loaded general files to an error function.
+% \begin{macrocode}
+ \let\N\rqv at overloaded \@xp\rqv at set\general at files \T
+% \end{macrocode}
+% Set all the required files to an ignore function.
+% \begin{macrocode}
+ \let\N\@gobble \@xp\rqv at set\rqv at list \T
+% \end{macrocode}
+% Execute all the general files.
+% \begin{macrocode}
+ \@xp\rqv at test\general at files{\endcsname\csname @gobbletwo}%
+% \end{macrocode}
+% And now do essentially the same thing in the reverse direction.
+% \begin{macrocode}
+ \let\N\rqv at notloaded \@xp\rqv at set\rqv at list \T
+ \let\N\@gobble \@xp\rqv at set\general at files \T
+ \@xp\rqv at test\rqv at list{\endcsname\csname @gobbletwo}%
+ \endgroup
}
% \end{macrocode}
%
@@ -694,27 +965,97 @@
}
% \end{macrocode}
%
-% Terminate here without touching \LaTeX{} internals, unless
-% one of the relevant snapshot options was chosen.
+% Because \cs{ProvidesFile} is used in \fn{.fd} files which are
+% normally read with special catcodes, there tend to
+% be problems with whitespace characters being erroneously lost from
+% the second argument. Since we have to put in a \cs{snap at check} call
+% anyway, while we're at it let's fix a bug of this type that
+% affected some older versions of \latex/.
% \begin{macrocode}
-\let\snap at compare@versions\@gobble \let\snap at check\@gobble
-\let\snap at selfcheck\@gobble \let\snap at selfcheck@a\@gobble
-\ifx\snap at select\@empty \endinput \fi
+\def\ProvidesFile#1{%
+ \def\snap at checker{\snap at check{#1}}%
+ \begingroup
+ \aftergroup\snap at checker
+ \catcode`\ 10
% \end{macrocode}
+% Added guards from 2001/06/01 version of \latex/. These are
+% necessary because, for example, \pkg{inputenc} sets
+% \cs{endlinechar} to a large (nonvalid character) value when
+% reading input encoding files. The guards prevent an ``invalid
+% character'' error.
+% \begin{macrocode}
+ \ifnum\endlinechar < 256
+ \ifnum \endlinechar>\m at ne
+ \catcode\endlinechar 10
+ \fi
+ \fi
+ \@makeother\/%
+ \@makeother\&%
+ \kernel at ifnextchar[{\snap at providesfile{#1}}{\snap at providesfile{#1}[]}%
+}
+% \end{macrocode}
%
+% Normally the string found in the second arg of \cs{ProvidesFile}
+% (for a nongraphics file) would begin with the usual date string.
+% The \cs{includegraphics} command, however, begins the second arg
+% with \texttt{Graphic file} instead. This test therefore just checks
+% if the first two letters are \texttt{Gr}; this is enough,
+% ordinarily, for us to conclude that we are dealing with a graphic
+% file.
% \begin{macrocode}
-\begingroup \catcode`\.=11\relax
-\gdef\snap at selfcheck@b#1\rqv at snapshot.sty#2#3\@nil{T#2}
-\gdef\snap at selfcheck@a#1{%
- \if\@xp\snap at selfcheck@b\csname rqv@#1\endcsname T%
- \rqv at snapshot.sty F\@nil
- \snap at check{#1}%
+\def\snap at graphic@test#1#2#3\@nil{r\if G#1#2\else X\fi}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\snap at providesfile#1[#2]{%
+ \wlog{File: #1 #2}%
+ \if\snap at graphic@test#2@@\@nil
+ \snap at record@graphic#1\relax #2 (type ??)\@nil
+ \else
+ \expandafter\xdef\csname ver@#1\endcsname{#2}%
\fi
+ \endgroup
}
-\endgroup
% \end{macrocode}
%
+% This is what \cn{includegraphics} does to record graphic file
+% information.
+%\begin{verbatim}
+%\@providesfile #1[#2]->
+%\wlog {File: #1 #2}\expandafter \xdef \csname ver@#1\endcsname {#2}
+%\endgroup
+%#1<-\Gin at base \Gin at ext
+%#2<-Graphic file (type eps)
+%\end{verbatim}
+%
+% Check the graphics info.
% \begin{macrocode}
+\def\snap at record@graphic#1\relax #2(type #3)#4\@nil{%
+ \expandafter\xdef\csname ver@#1\endcsname{%
+ Graphic%
+ \if\snap at bbinfo :bb=\Gin at llx/\Gin at lly/\Gin at urx/\Gin at ury\fi
+ \space v0.0%
+ }%
+}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\@pr at videpackage [#1]{%
+ \expandafter\xdef\csname ver@\@currname.\@currext\endcsname{#1}%
+ \ifx\@currext\@clsextension
+ \typeout{Document Class: \@gtempa\space#1}%
+ \else
+ \wlog{Package: \@gtempa\space#1}%
+ \fi
+ \snap at check{\@currname.\@currext}%
+}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\snap at selfcheck@a{\snap at check{snapshot.sty}}
+% \end{macrocode}
+%
+% \begin{macrocode}
\def\@nofmt#1.fmt.#2 {#1 }
% \end{macrocode}
%
@@ -747,39 +1088,205 @@
\fi
}%
\endgroup
+% \end{macrocode}
+% When the \opt{test} option is in effect, jump out of the current
+% file instead of continuing.
+% \begin{macrocode}
+ \snap at test@abort
}
% \end{macrocode}
%
-% Because \cs{ProvidesFile} is used in \fn{.fd} files which are
-% normally read with special catcodes, there tend to
-% be problems with whitespace characters being erroneously lost from
-% the second argument. Since we have to put in a \cs{snap at check} call
-% anyway, while we're at it let's fix a bug of this type that
-% affected some older versions of \latex/.
% \begin{macrocode}
-\def\ProvidesFile#1{%
- \def\snap at checker{\snap at check{#1}}%
- \begingroup
- \aftergroup\snap at checker
- \catcode`\ 10\catcode\endlinechar 10 %
- \@makeother\/%
- \@makeother\&%
- \@ifnextchar[{\@providesfile{#1}}{\@providesfile{#1}[]}%
+\let\snap at test@abort=\@empty
+% \end{macrocode}
+%
+% \section{Compatibility}
+%
+% Suppose that I have a \lat/ document containing a
+% \cs{RequireVersions} statement generated by \pkg{snapshot} and I
+% send this to my colleague who, we believe, has a \lat/ setup that
+% is for our purposes identical. Suppose that our belief is erroneous
+% in the following way: My colleague has a newer version of
+% \pkg{snapshot} and a newer version of one of the affected files.
+%
+% Here is what we \strong{don't} want to happen: That the differing
+% version of snapshot would cause the other differing file to be
+% accepted without demur.
+%
+% Conversely, if it is I who have the newer version of
+% \pkg{snapshot}, the main concern is that some difference in the
+% contents of the \cs{RequireVersions} statement would lead to an
+% error when my colleague attempts to process the document.
+%
+% \section{In conclusion}
+%
+% \begin{macrocode}
+\ifx\snap at select\@empty
+ \let\snap at compare@versions\@gobble
+ \let\snap at check\@gobble
+\fi
+% \end{macrocode}
+%
+% Fallback for a command that is sometimes used in AMS journal
+% production.
+% \begin{macrocode}
+\providecommand{\controldates}[1]{}
+% \end{macrocode}
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% \section{And finally \dots}\label{test}
+%
+% If the embedded \cs{RequireVersions}
+% data in a \lat/ document is extracted to a separate file, and
+%\begin{verbatim}
+%\RequirePackage[test]{snapshot}
+%\end{verbatim}
+% is added at the top, then the file can be run as a small separate
+% \LaTeX{} job that will, among other things, produce in the log file
+% a nice list of fully resolved file names\mdash sort of a limited,
+% but system-independent variant of the \fn{kpsewhich} idea.
+% \begin{macrocode}
+\ifx\snap at intest\@gobbletwo \endinput \fi
+% \end{macrocode}
+%
+% Some old, ill-behaved packages might throw in a \cs{makeatother} at
+% the end which can cause problems for the next file that comes along
+% when testing.
+% \begin{macrocode}
+\def\restore at some@catcodes{}
+\def\save at some@catcodes{%
+ \edef\restore at some@catcodes{%
+ \catcode\number`\@=\number\catcode`\@
+ \catcode\number`\"=\number\catcode`\"
+ \catcode\number`\^=\number\catcode`\^
+ \catcode\number`\_=\number\catcode`\_
+ \relax
+ }%
}
% \end{macrocode}
%
+% Some typical calls of \cs{snap at intest}:
+%\begin{verbatim}
+% \snap at intest{LaTeX2e}{\snapx at format}
+% \snap at intest{snapshot}{\snapx at package}
+% \snap at intest{mcom-l}{\snapx at class}
+% \snap at intest{amsmath}{\snapx at package}
+% \snap at intest{umsa.fd}{\snapx at file}
+% \snap at intest{pictex}{\snapx at file}
+%\end{verbatim}
+%
+% The extant public versions of the following files (in the teTeX
+% distribution, at least) are known to be problematic when we are
+% trying to read a \cs{ProvidesWhatever} line from the top of the
+% file: psfig.sty, pictex.sty, pictex.tex, epic.sty, amstex.sty,
+% xy.tex. Either (a) they don't have a \cs{ProvidesWhatever} line at
+% all, or (b) they include some code before the \cs{ProvidesWhatever}
+% line that makes some assumption true in normal processing but false
+% in snapshot-test processing. E.g., there is code in \fn{amstex.sty}
+% that assumes \cs{documentstyle} or \cs{documentclass} was already
+% executed and that the \cs{if at compatibility} switch got set
+% accordingly.
+%
% \begin{macrocode}
-\def\@pr at videpackage[#1]{%
- \expandafter\xdef\csname ver@\@currname.\@currext\endcsname{#1}%
- \ifx\@currext\@clsextension
- \typeout{Document Class: \@gtempa\space#1}%
+\def\snap at intest#1#2{%
+ \message{^^J}%
+ \begingroup \edef\0{#1#2}\def\9{latex209.def}%
+ \ifx\0\9\global\@compatibilitytrue \fi
+ \ifx#2\snapx at format
+% \end{macrocode}
+% If arg1 + arg2 = ``LaTeX2e.fmt'', the calling function
+% \cs{snap at storeb} will run \cs{snap at check} separately.
+% This is a crude way of making things work in that case without
+% much extra trouble.
+% \begin{macrocode}
+ \def\snap at test@abort{\endgroup}%
\else
- \wlog{Package: \@gtempa\space#1}%
+ \edef\N{%
+ \noexpand\snap at intest@b{#1#2}%
+ {#1}{\@xp\@gobble#2\@empty}%
+ {\csname rqv@#1#2\endcsname}}%
+ \expandafter\endgroup\N
\fi
- \snap at check{\@currname.\@currext}%
}
% \end{macrocode}
%
+% \begin{macrocode}
+\def\snap at intest@b#1#2#3#4{%
+ \def\@currname{#2}\def\@currext{#3}%
+ \begingroup \lccode`\/=`\0\relax\lowercase{\endgroup
+ \ifnum\snap at seldate#4 00 0\@nil>\z@
+ }% matches \lowercase
+ \save at some@catcodes
+ \@@input #1 \relax
+ \restore at some@catcodes
+ \else
+ \snap at specialtest{#1}{#4}%
+ \fi
+}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\snap at specialtest#1#2{%
+ \fake at input{#1}%
+}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\fake at input#1{%
+ \begingroup
+ % Ensure that outer \foo or unmatched braces don't trip us up
+ \catcode`\\=12 \catcode`\{=12 \catcode`\}=12
+ \endinput
+% \end{macrocode}
+% Note that these definitions of \cs{G} and \cs{?} are local, and
+% recall that one-letter cs names don't use up hash table entries.
+% \begin{macrocode}
+ \def\G{\@car\endgroup}%
+ \expandafter\futurelet\expandafter\?\expandafter\G\@@input#1 \relax\@nil
+}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\let\snap at test@abort=\endinput
+\let\snap at selfcheck=\@empty
+% \end{macrocode}
+%
+% There's an extra close-brace left hanging around at the end, but I
+% guess we don't care.
+% \begin{macrocode}
+\def\snap at finish{%%
+ \endgroup \message{^^J}%
+ \def\X##1{##1,\X}%
+ \edef\@filelist{\@xp\X\rqv at list{\@gobbletwo}}%
+ \def\X##1,?{##1}\edef\@filelist{\@xp\X\@filelist ?}%
+ \@dofilelist
+ \@@end
+}%
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\snap at mismatch#1#2#3{}
+% \end{macrocode}
+%
+% Problematic: xy.sty, because it calls xy.tex before it calls
+% \cs{ProvidesPackage}. And pictex.tex because it doesnt use
+% \cs{ProvidesFile} at all.
+% \begin{macrocode}
+\renewcommand{\RequireVersions}[2][]{%
+ \begingroup
+ \makeatletter
+ \def\snap at check{\snap at compare@versions}%%
+ \let\snapx at tfm=\snap at ignore
+% \end{macrocode}
+% This seems to help, with english.ldf for example, to prevent an
+% endless loop when attempting to load babel.def.
+% \begin{macrocode}
+ \def\ProvidesLanguage##1{\ProvidesFile{##1.ldf}}%
+ \iffalse{\fi \futurelet\@let at token\snap at branch #2}%
+ \endgroup
+}
+% \end{macrocode}
+%
% The usual \cs{endinput} to ensure that random garbage at the end of
% the file doesn't get copied by \fn{docstrip}.
% \begin{macrocode}
@@ -786,22 +1293,5 @@
\endinput
% \end{macrocode}
%
-% \section*{To Do}
-%
-% \begin{itemize}
-% \item Provide a test to distinguish between shared-use files and
-% document-specific files? Document-specific files would be things
-% like graphics files loaded via \cs{includegraphics} or book
-% chapters loaded via \cs{include}. But there might also be something
-% like \verb'\input{my-book-macros}' in the preamble. Maybe authors
-% should be encouraged to put this after \verb'\begin{document}'? Or,
-% even, after \verb'\begin{abstract}' so that the abstract will
-% contain only lowest-common-denominator \LaTeX{} commands?
-%
-% The non-document-specific files most commonly loaded after
-% \verb'\begin{document}' would be \fn{.fd} files, but there is also
-% the possibility of autoloaded stuff (\fn{alatex} format).
-% \end{itemize}
-%
-% \CheckSum{777}
+% \CheckSum{1209}
% \Finale
Modified: trunk/Master/texmf-dist/source/latex/snapshot/snapshot.ins
===================================================================
--- trunk/Master/texmf-dist/source/latex/snapshot/snapshot.ins 2019-09-18 21:53:06 UTC (rev 52114)
+++ trunk/Master/texmf-dist/source/latex/snapshot/snapshot.ins 2019-09-18 21:56:20 UTC (rev 52115)
@@ -1,12 +1,77 @@
-% Normal installation of this package in a standard TDS texmf tree:
-% Put snapshot.sty into the directory texmf/tex/latex/misc.
-% Put snapshot.dvi (produced by running LaTeX on snapshot.dtx) into
-% texmf/doc/latex/misc.
+%% filename: snapshot.ins
+%% version: 1.00
+%% date: 2010/08/13
+%%
+%% American Mathematical Society
+%% Technical Support
+%% Publications Technical Group
+%% 201 Charles Street
+%% Providence, RI 02904
+%% USA
+%% tel: (401) 455-4080
+%% (800) 321-4267 (USA and Canada only)
+%% fax: (401) 331-3842
+%% email: tech-support at ams.org
+%%
+%% Copyright 2010 American Mathematical Society.
+%%
+%% This work may be distributed and/or modified under the
+%% conditions of the LaTeX Project Public License, either version 1.3c
+%% of this license or (at your option) any later version.
+%% The latest version of this license is in
+%% http://www.latex-project.org/lppl.txt
+%% and version 1.3c or later is part of all distributions of LaTeX
+%% version 2005/12/01 or later.
+%%
+%% This work has the LPPL maintenance status `maintained'.
+%%
+%% The Current Maintainer of this work is the American Mathematical
+%% Society.
+%%
+%% ====================================================================
-\def\batchfile{snapshot.ins}
-\input docstrip.tex
+\input docstrip
+
+\askforoverwritefalse
+
+\keepsilent
+
\preamble
+
+Copyright 2001, 2004, 2006, 2007, 2010, 2012 American Mathematical Society.
+
+American Mathematical Society
+Technical Support
+Publications Technical Group
+201 Charles Street
+Providence, RI 02904
+USA
+tel: (401) 455-4080
+ (800) 321-4267 (USA and Canada only)
+fax: (401) 331-3842
+email: tech-support at ams.org
+
+This work may be distributed and/or modified under the
+conditions of the LaTeX Project Public License, either version 1.3c
+of this license or (at your option) any later version.
+The latest version of this license is in
+ http://www.latex-project.org/lppl.txt
+and version 1.3c or later is part of all distributions of LaTeX
+version 2005/12/01 or later.
+
+This work has the LPPL maintenance status `maintained'.
+
+The Current Maintainer of this work is the American Mathematical
+Society.
+
\endpreamble
-\keepsilent
+
+\usedir{tex/latex/snapshot}
+
+\generate{%
+ \file{snapshot.sty}{\from{snapshot.dtx}{}}
+}
+
\generateFile{snapshot.sty}{f}{\from{snapshot.dtx}{}}
-\endinput
+
+\endbatchfile
Modified: trunk/Master/texmf-dist/tex/latex/snapshot/snapshot.sty
===================================================================
--- trunk/Master/texmf-dist/tex/latex/snapshot/snapshot.sty 2019-09-18 21:53:06 UTC (rev 52114)
+++ trunk/Master/texmf-dist/tex/latex/snapshot/snapshot.sty 2019-09-18 21:56:20 UTC (rev 52115)
@@ -6,51 +6,70 @@
%%
%% snapshot.dtx
%%
-%%% ====================================================================
-%%% @LaTeX-doc-source-file{
-%%% filename = "snapshot.dtx",
-%%% version = "1.14",
-%%% date = "2002/03/05",
-%%% time = "15:29:00 EST",
-%%% checksum = "39090 807 3449 29761",
-%%% author = "American Mathematical Society",
-%%% copyright = "Copyright 2001 American Mathematical Society,
-%%% all rights reserved. Copying of this file is
-%%% authorized only if either:
-%%% (1) you make absolutely no changes to your copy,
-%%% including name; OR
-%%% (2) if you do make changes, you first rename it
-%%% to some other name.",
-%%% address = "American Mathematical Society,
-%%% Electronic Products and Services,
-%%% PO Box 6248,
-%%% Providence, RI 02940,
-%%% USA",
-%%% email = "tech-support at ams.org",
-%%% URL = "http://www.ams.org/",
-%%% supported = "yes",
-%%% keywords = "version, compatibility, dependencies, LaTeX",
-%%% abstract = "This package provides a way for a LaTeX
-%%% document to specify, for each external file
-%%% on which the document depends, which version
-%%% is required to guarantee output fidelity.",
-%%% docstring = "The checksum field above contains a CRC-16
-%%% checksum as the first value, followed by the
-%%% equivalent of the standard UNIX wc (word
-%%% count) utility output of lines, words, and
-%%% characters. This is produced by Robert
-%%% Solovay's checksum utility.",
-%%% }
-%%% ====================================================================
+%% Copyright 2001, 2004, 2006, 2007, 2010, 2012 American Mathematical Society.
+%%
+%% American Mathematical Society
+%% Technical Support
+%% Publications Technical Group
+%% 201 Charles Street
+%% Providence, RI 02904
+%% USA
+%% tel: (401) 455-4080
+%% (800) 321-4267 (USA and Canada only)
+%% fax: (401) 331-3842
+%% email: tech-support at ams.org
+%%
+%% This work may be distributed and/or modified under the
+%% conditions of the LaTeX Project Public License, either version 1.3c
+%% of this license or (at your option) any later version.
+%% The latest version of this license is in
+%% http://www.latex-project.org/lppl.txt
+%% and version 1.3c or later is part of all distributions of LaTeX
+%% version 2005/12/01 or later.
+%%
+%% This work has the LPPL maintenance status `maintained'.
+%%
+%% The Current Maintainer of this work is the American Mathematical
+%% Society.
+%%
\NeedsTeXFormat{LaTeX2e}[1994/12/01]
-\ProvidesPackage{snapshot}[2002/03/05 v1.14]
-\let\@xp\expandafter \let\@nx\noexpand
-\newcommand{\RequireVersions}[2][]{%
- \let\snap at check\snap at compare@versions
- \let\snap at selfcheck\snap at selfcheck@a
- \@ifnextchar *\snap at store@version\snap at store@error#2*{end}{}{}%
+\ProvidesPackage{snapshot}[2012/08/06 v2.13]
+\let\@xp=\expandafter \let\@nx=\noexpand
+\def\str at cmp#1#2\str at cmp#3{%
+ \if #1#3\else F\@car\fi \str at cmp#2\str at cmp
}
+\def\string at equal#1#2{%
+ \str at cmp#1\relax\str at cmp#2{\relax\@gobbletwo}\@nil TT%
+}
+\newcommand{\RequireVersions}[2][]{}%
+\renewcommand{\RequireVersions}[1][]{%
+ \def\snap at check{\snap at compare@versions}%
+ \toks@{#1}\afterassignment\snap at storem
+ \let\@let at token=
+}
+\def\snap at storem{%
+ \ifx\@let at token\bgroup
+ \else
+ \PackageError{snapshot}{Expected a `\@charlb' character here}\@ehc
+ \@xp\@gobblefour
+ \fi
+ \futurelet\@let at token\snap at branch
+}
\@onlypreamble\RequireVersions
+\let\snap at check\@gobble
+\def\snap at finish{\toks@\bgroup}
+\def\snap at branch{%
+ \ifx\@let at token\egroup
+ \@xp\snap at finish
+ \else\ifx\@let at token *%
+ \let\reserved at c\snap at store@version
+ \else\ifx\@let at token\@sptoken
+ \lowercase{\def\reserved at c} {\futurelet\@let at token\snap at branch}%
+ \else
+ \let\reserved at c\snap at store@error
+ \fi\fi\fi
+ \reserved at c
+}
\def\snap at store@error#1{%
\PackageError{snapshot}{Expected '*' here, not '#1'}\@ehc
}
@@ -59,6 +78,37 @@
\@xp\snap at store@b\csname snapx@#2\endcsname{#2}{#3}{#4}%
}
\@onlypreamble\snap at store@version
+\ifx\OmegaVersion\@@undefined
+\else
+ \edef\snapshotApplication{%
+ {Omega}\space\space\space
+ {0000/00/00 v\OmegaVersion}%
+ }%
+\fi
+\ifx\eTeXversion\@@undefined
+\else
+ \edef\snapshotApplication{%
+ {eTeX}\space\space\space\space
+ {0000/00/00 v\number\eTeXversion\eTeXrevision}%
+ }%
+\fi
+\ifx\pdftexversion\@@undefined
+\else
+ \edef\snapshotApplication{%
+ \ifx\eTeXversion\@@undefined
+ {pdfTeX}\space\space
+ \else
+ {pdfeTeX}\space
+ \fi
+ {0000/00/00 v0.\number\pdftexversion\pdftexrevision}%
+ }%
+\fi
+\@ifundefined{snapshotApplication}{%
+ \edef\snapshotApplication{%
+ {TeX}\space\space\space\space\space
+ {1990/03/25 v3.x}%
+ }%
+}{}
\def\@fmtextension{fmt}
\def\@tfmextension{tfm}
\edef\snapx at package{.\@pkgextension}
@@ -65,28 +115,31 @@
\edef\snapx at class{.\@clsextension}
\edef\snapx at format{.\@fmtextension}
\edef\snapx at tfm{.\@tfmextension}
-\long\def\snapx at application{}
-\let\snap at file=\@empty
+\long\def\snapx at ignore{}
+\let\snapx at application=\snapx at ignore
+\let\snapx at file=\@empty
\let\snapx at end\@@end
+\expandafter\let\csname snapx at -------\endcsname\snapx at end
\def\snap at store@b#1#2#3#4{%
\ifx#1\snapx at end
- \@xp\@gobblefour
+ \@xp\snap at finish
\else
\ifx#1\relax \let#1\@empty\fi
\def\@tempa##1 ##2 ##3\@nil{##1 ##2}%
\ifx#1\snapx at application
+ \@xp\xdef\csname rqv@#3#1\endcsname{\@tempa#4 v?.? ? \relax\@nil}%
\else
- \xdef\rqv at list{\rqv at list
- \ifx\@empty\rqv at list\else,\fi
- #3#1%
- }%
+ \xdef\rqv at list{\rqv at list{#3#1}}%
+ \@xp\xdef\csname rqv@#3#1\endcsname{\@tempa#4 v?.? ? \relax\@nil}%
+ \snap at intest{#3}{#1}%
+ \ifx#1\snapx at format \snap at check{#3.fmt}%
+ \else
+ \edef\@tempa{\@nx\string at equal{snapshot.sty}{#3#1}}%
+ \if\@tempa \snap at selfcheck \fi
+ \fi
\fi
- \@xp\xdef\csname rqv@#3#1\endcsname{\@tempa#4 v?.? ? \relax\@nil}%
- \ifx#1\snapx at format \snap at check{#3.fmt}%
- \else \snap at selfcheck{#3.sty}%
- \fi
\fi
- \@ifnextchar *\snap at store@version\snap at store@error
+ \futurelet\@let at token\snap at branch
}
\@onlypreamble\snap at store@b
\def\snap at write{\immediate\write\snap at out}
@@ -97,10 +150,8 @@
\DeclareOption{log}{%
\let\snap at write\typeout
}
-\let\snap at fake@b\relax
-\DeclareOption{test}{%
- \def\snap at fake@b{\endinput \futurelet\@let at token\snap at ignoline}%
-}
+\let\snap at intest=\@gobbletwo
+\DeclareOption{test}{\def\snap at intest{True}}
\DeclareOption{tfm}{%
\typeout{Option 'tfm' not implemented yet [1999/09/23]}%
}
@@ -108,17 +159,20 @@
\def\snap at mismatch{\snap at mismatch@warning}
\DeclareOption{error}{%
\def\snap at mismatch{\PackageError}%
+ \def\snap at selfcheck{\snap at selfcheck@a}%
\ifx\snap at select\@empty \let\snap at select\snap at select@all \fi
}
\DeclareOption{warning}{%
\def\snap at mismatch{\snap at mismatch@warning}%
+ \def\snap at selfcheck{\snap at selfcheck@a}%
\ifx\snap at select\@empty \let\snap at select\snap at select@all \fi
}
\def\snap at select@all#1#2 #3#4 #5\@nil{#1#2 #3#4}
\let\snap at select\@empty
-\DeclareOption{date}{%
- \def\snap at select#1#2 #3\@nil{#1#2}%
-}
+\def\snap at seldate#1#2 #3\@nil{#1#2}%
+\def\snap at selversion#1#2 #3{\snap at select@version #3}%
+\def\snap at selmajor#1#2 #3{\snap at select@major #3}%
+\DeclareOption{date}{\let\snap at select=\snap at seldate}
\def\snap at select@version#1{%
\ifodd 0#11 \@xp\snap at sva\@xp#1\else\@xp\snap at select@version\fi
}
@@ -127,13 +181,26 @@
\ifodd 0#11 \@xp\snap at svm\@xp#1\else\@xp\snap at select@major\fi
}
\def\snap at svm#1.#2\@nil{#1}
-\DeclareOption{version}{%
- \def\snap at select#1#2 #3{\snap at select@version #3}%
+\DeclareOption{version}{\let\snap at select\snap at selversion}
+\DeclareOption{major-version}{\let\snap at select\snap at selmajor}
+\def\snap at bbinfo{01}
+\DeclareOption{bbinfo}{\def\snap at bbinfo{00}}
+\let\snap at splitter=?
+\AtBeginDocument{%
+ \xdef\@filelist{\@filelist\snap at splitter}%
}
-\DeclareOption{major-version}{%
- \def\snap at select#1#2 #3{\snap at select@major #3}%
+\let\snap at selfcheck\@empty
+\let\snap at selfcheck@a\@empty
+\DeclareOption{self-warning}{%
+ \def\snap at selfcheck{%
+ \begingroup
+ \def\snap at mismatch{\snap at mismatch@warning}%
+ \snap at selfcheck@a
+ \endgroup
+ }
}
-\ProcessOptions\par
+\ExecuteOptions{warning}
+\ProcessOptions\relax
\edef\snap at restore@extensions{%
\def\@nx\@pkgextension{\@pkgextension}%
\def\@nx\@clsextension{\@clsextension}%
@@ -157,42 +224,29 @@
}%
\fi
\listfiles
-\def\@dofilelist{%
- \snap at restore@extensions
- \ifx\rqv at list\@empty
- \else \rqv at compare@lists
- \fi
- \ifx\snap at write\typeout
+\def\snap at doit#1{%
+ \begingroup
+ \ifx\delimiter#1\delimiter
\else
- \newwrite\snap at out
- \immediate\openout\snap at out=\jobname.dep \relax
- \fi
- \snap at write{\string\RequireVersions\@charlb}%
- \snap at write{\space\space *{application}{TeX}%
- \space\space\space\space\space{1990/03/25 v3.x}}%
- \@for\@currname:=\@filelist\do{%
- \filename at parse\@currname
+ \filename at parse{#1}%
+ \let\@tempd\@empty
\ifx\filename at ext\relax
- \def\@tempa{file}\def\@tempd{.tex}\def\filename at ext{tex}%
- \def\@tempb{~~~}%
+ \def\@tempa{file}\def\@tempb{~~~}%
\else\ifx\filename at ext\@pkgextension
- \def\@tempa{package}\let\@tempd\@empty
- \def\@tempb{}%
+ \def\@tempa{package}\let\@tempb\@empty
\else\ifx\filename at ext\@clsextension
- \def\@tempa{class}\let\@tempd\@empty
- \def\@tempb{~~}%
+ \def\@tempa{class}\def\@tempb{~~}%
\else\ifx\filename at ext\@fmtextension
- \def\@tempa{format}\let\@tempd\@empty
- \def\@tempb{~}%
+ \def\@tempa{format}\def\@tempb{~}%
\else\ifx\filename at ext\@tfmextension
- \def\@tempa{tfm}\let\@tempd\@empty
- \def\@tempb{~~~~}%
+ \def\@tempa{tfm}\def\@tempb{~~~~}%
\else
\def\@tempa{file}\edef\@tempd{.\filename at ext}%
\def\@tempb{~~~}%
\fi\fi\fi\fi\fi
\@xp\let\@xp\@tempe
- \csname ver@\filename at base.\filename at ext\endcsname
+ \csname ver@\filename at base %
+ \ifx\filename at ext\relax\else.\filename at ext\fi\endcsname
\ifx\@tempe\@empty \let\@tempe\relax \fi
\edef\@tempe{%
\ifx\@tempe\relax 0000/00/00 v0.0%
@@ -202,10 +256,65 @@
}%
\edef\@tempc{\filename at area\filename at base\@tempd}% full file name
\@xp\snap at pad\@tempc\space~~~~~~~~~~~~~~~~\@nil\@tempd
- \begingroup \let~\space
- \snap at write{\space\space *{\@tempa}\@tempb{\@tempc}\@tempd{\@tempe}}%
- \endgroup
+ \let~\space
+ \snap at write{\space\space *{\@tempa}\@tempb{\@tempc}\@tempd{\@tempe}}%
+ \fi
+ \aftergroup\snap at doit
+ \endgroup
+}%
+\def\snap at bracify#1#2,{%
+ \ifx\@empty#1\expandafter\@gobble\else {#1#2}\fi \snap at bracify
+}
+\def\snap at splitter@a{%
+ \iffalse{{\fi }}% close current file name, end definition
+ \xdef\specific at files{%
+ \iffalse}\fi
+ \specific at files
+ \expandafter\@gobble\string % discard one closing brace
+}
+\def\snap at fdcheck#1{%
+ \ifx\delimiter#1\@xp\@gobble
+ \else\snap at fda#1\@empty.fd\@empty ?\@nil
+ \fi
+ \snap at fdcheck
+}
+\def\snap at fda#1.fd\@empty#2#3\@nil{%
+ \if ?#2%
+ \xdef\specific at files{\specific at files {#1}}%
+ \else
+ \xdef\general at files{\general at files {#1.fd}}%
+ \fi
+}
+\let\general at files\@empty
+\let\specific at files\@empty
+\newcommand{\SpecialInput}[1]{%
+ \xdef\specific at files{\specific at files{#1}}%
+ \@@input#1\relax
+}
+\def\@dofilelist{%
+ \snap at restore@extensions
+ \xdef\general at files{\@xp\snap at bracify \@filelist \@empty,\@empty,}%
+ \let\snap at splitter\snap at splitter@a
+ \xdef\general at files{\general at files}%
+ \let\@tempa\specific at files \global\let\specific at files\@empty
+ \@xp\snap at fdcheck\@tempa{\delimiter}%
+ \ifx\rqv at list\@empty
+ \else \rqv at compare@lists
+ \fi
+ \ifx\snap at write\typeout
+ \else
+ \newwrite\snap at out
+ \immediate\openout\snap at out=\jobname.dep \relax
+ \fi
+ \snap at write{\string\RequireVersions\@charlb}%
+ \snap at write{\space\space *{application}%
+ \snapshotApplication
}%
+ \@xp\snap at doit\general at files{\delimiter\aftergroup\@gobble\@gobble}%
+ \ifx\specific at files\@empty
+ \else
+ \snap at specific
+ \fi
\snap at write{\@charrb}%
\ifx\snap at write\typeout
\else \immediate\closeout\snap at out
@@ -212,71 +321,49 @@
\typeout{Dependency list written on \jobname.dep.}%
\fi
}%
-\def\rqv at condense#1,{%
- \if ,#1,%
+\def\snap at specific{%
+ \snap at write{ \space *{-------}{Document-specific files:}{----}}%
+ \@xp\snap at doit\specific at files{\delimiter\aftergroup\@gobble\@gobble}%
+}
+\def\rqv at condense#1{%
+ \@xp\ifx\csname ver@#1\endcsname\N
\else
- \@xp\ifx\csname ver@#1\endcsname\N
- \else
- \edef\L{\L,#1}%
- \@xp\let\csname ver@#1\endcsname=\N
- \fi
+ \edef\L{\L{#1}}%
+ \@xp\let\csname ver@#1\endcsname=\N
\fi
\rqv at condense
}
+\def\rqv at condend{\endcsname ?\fi
+ \@xp\@xp\@xp\@gobbletwo\csname @xp\iftrue}
+\def\rqv at overloaded#1{%
+ \snap at mismatch{snapshot}{^^J%
+ File #1 loaded though not in \noexpand\RequireVersions list%
+ }\@ehc
+}
+\def\rqv at notloaded#1{%
+ \snap at mismatch{snapshot}{^^J%
+ File #1 [\csname rqv@#1\endcsname] required but not loaded%
+ }\@ehc
+}
+\def\rqv at set#1{\@xp\let\csname ver@#1\endcsname\N \rqv at set}
+\def\rqv at test#1{\csname ver@#1\endcsname{#1}\rqv at test}
\def\rqv at compare@lists{%
\begingroup
- \def\N{1}\let\L=\@gobble
- \@xp\rqv at condense \rqv at list,TeX,{,\relax\@xp\@gobbletwo\@xp},%
- \ifx\L\@gobble\let\L\@empty\fi
- \let\rqv at list=\L
- \let\L=\@gobble
- \@xp\rqv at condense \@filelist,{,\relax\@xp\@gobbletwo\@xp},%
- \ifx\L\@gobble\let\L\@empty\fi
- \@for\@currname:=\L\do{%
- \snap at mismatch{snapshot}{^^J%
- File \@currname\space loaded though not in
- \noexpand\RequireVersions list%
- }\@ehc
- }%
- \def\N{2}\let\L=\@gobble
- \@xp\rqv at condense\@filelist,TeX,{,\relax\@xp\@gobbletwo\@xp},%
- \let\L=\@gobble
- \@xp\rqv at condense\rqv at list,{,\relax\@xp\@gobbletwo\@xp},%
- \ifx\L\@gobble\let\L\@empty\fi
- \@for\@currname:=\L\do{%
- \snap at mismatch{snapshot}{^^J%
- File \@currname\space [\csname rqv@\@currname\endcsname]
- required but not loaded%
- }\@ehc
- }%
+ \def\N{1}\let\L\@empty
+ \@xp\rqv at condense\rqv at list\rqv at condend
+ \global\let\rqv at list=\L
+ \def\N{2}\let\L\@empty
+ \@xp\rqv at condense\general at files\rqv at condend
+ \global\let\general at files=\L
+ \def\T{\@firstoftwo{\endcsname\@empty\@gobbletwo}}%
+ \let\N\rqv at overloaded \@xp\rqv at set\general at files \T
+ \let\N\@gobble \@xp\rqv at set\rqv at list \T
+ \@xp\rqv at test\general at files{\endcsname\csname @gobbletwo}%
+ \let\N\rqv at notloaded \@xp\rqv at set\rqv at list \T
+ \let\N\@gobble \@xp\rqv at set\general at files \T
+ \@xp\rqv at test\rqv at list{\endcsname\csname @gobbletwo}%
\endgroup
}
-\begingroup \catcode\endlinechar=12\relax %
-\long\gdef\snap at ignoline#1
-{}\endgroup %
-\def\snap at fake@input#1#2#3#4{%
- \ifx#1\snapx at end
- \aftergroup\@@end \@xp\@gobblefour
- \else
- \ifx#1\snapx at format
- \else
- \message{^^J}%
- \@xp\snap at fake@b\@@input #3#1\relax
- \fi
- \fi
- \@ifnextchar *\snap at store@version\snap at store@error
-}
-\newcommand{\rqvTest}[2][]{%
- \begingroup \catcode\endlinechar=12
- \catcode`\%=12 \catcode`\{=12 \catcode`\}=12\relax
- \let\snapx at application=\snapx at format \let\snapx at tfm=\snap at format
- \@ifnextchar *\snap at store@version\snap at store@error#2*{end}{}{}%
- \endgroup
-}
-\@ifundefined{snap at fake@b}{}{%
- \let\snap at store@b\snap at fake@input
- \let\RequireVersions\rqvTest
-}
\AtBeginDocument{%
\@ifundefined{ver at amsgen}{}{%
\@xp\let\csname ver at amsgen.sty\@xp\endcsname
@@ -283,18 +370,47 @@
\csname ver at amsgen\endcsname
}%
}
-\let\snap at compare@versions\@gobble \let\snap at check\@gobble
-\let\snap at selfcheck\@gobble \let\snap at selfcheck@a\@gobble
-\ifx\snap at select\@empty \endinput \fi
-\begingroup \catcode`\.=11\relax
-\gdef\snap at selfcheck@b#1\rqv at snapshot.sty#2#3\@nil{T#2}
-\gdef\snap at selfcheck@a#1{%
- \if\@xp\snap at selfcheck@b\csname rqv@#1\endcsname T%
- \rqv at snapshot.sty F\@nil
- \snap at check{#1}%
+\def\ProvidesFile#1{%
+ \def\snap at checker{\snap at check{#1}}%
+ \begingroup
+ \aftergroup\snap at checker
+ \catcode`\ 10
+ \ifnum\endlinechar < 256
+ \ifnum \endlinechar>\m at ne
+ \catcode\endlinechar 10
+ \fi
+ \fi
+ \@makeother\/%
+ \@makeother\&%
+ \kernel at ifnextchar[{\snap at providesfile{#1}}{\snap at providesfile{#1}[]}%
+}
+\def\snap at graphic@test#1#2#3\@nil{r\if G#1#2\else X\fi}
+\def\snap at providesfile#1[#2]{%
+ \wlog{File: #1 #2}%
+ \if\snap at graphic@test#2@@\@nil
+ \snap at record@graphic#1\relax #2 (type ??)\@nil
+ \else
+ \expandafter\xdef\csname ver@#1\endcsname{#2}%
\fi
+ \endgroup
}
-\endgroup
+\def\snap at record@graphic#1\relax #2(type #3)#4\@nil{%
+ \expandafter\xdef\csname ver@#1\endcsname{%
+ Graphic%
+ \if\snap at bbinfo :bb=\Gin at llx/\Gin at lly/\Gin at urx/\Gin at ury\fi
+ \space v0.0%
+ }%
+}
+\def\@pr at videpackage [#1]{%
+ \expandafter\xdef\csname ver@\@currname.\@currext\endcsname{#1}%
+ \ifx\@currext\@clsextension
+ \typeout{Document Class: \@gtempa\space#1}%
+ \else
+ \wlog{Package: \@gtempa\space#1}%
+ \fi
+ \snap at check{\@currname.\@currext}%
+}
+\def\snap at selfcheck@a{\snap at check{snapshot.sty}}
\def\@nofmt#1.fmt.#2 {#1 }
\def\snap at mismatch@a#1#2#3{%
\snap at mismatch{snapshot}{^^J%
@@ -317,25 +433,83 @@
\fi
}%
\endgroup
+ \snap at test@abort
}
-\def\ProvidesFile#1{%
- \def\snap at checker{\snap at check{#1}}%
- \begingroup
- \aftergroup\snap at checker
- \catcode`\ 10\catcode\endlinechar 10 %
- \@makeother\/%
- \@makeother\&%
- \@ifnextchar[{\@providesfile{#1}}{\@providesfile{#1}[]}%
+\let\snap at test@abort=\@empty
+\ifx\snap at select\@empty
+ \let\snap at compare@versions\@gobble
+ \let\snap at check\@gobble
+\fi
+\providecommand{\controldates}[1]{}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\ifx\snap at intest\@gobbletwo \endinput \fi
+\def\restore at some@catcodes{}
+\def\save at some@catcodes{%
+ \edef\restore at some@catcodes{%
+ \catcode\number`\@=\number\catcode`\@
+ \catcode\number`\"=\number\catcode`\"
+ \catcode\number`\^=\number\catcode`\^
+ \catcode\number`\_=\number\catcode`\_
+ \relax
+ }%
}
-\def\@pr at videpackage[#1]{%
- \expandafter\xdef\csname ver@\@currname.\@currext\endcsname{#1}%
- \ifx\@currext\@clsextension
- \typeout{Document Class: \@gtempa\space#1}%
+\def\snap at intest#1#2{%
+ \message{^^J}%
+ \begingroup \edef\0{#1#2}\def\9{latex209.def}%
+ \ifx\0\9\global\@compatibilitytrue \fi
+ \ifx#2\snapx at format
+ \def\snap at test@abort{\endgroup}%
\else
- \wlog{Package: \@gtempa\space#1}%
+ \edef\N{%
+ \noexpand\snap at intest@b{#1#2}%
+ {#1}{\@xp\@gobble#2\@empty}%
+ {\csname rqv@#1#2\endcsname}}%
+ \expandafter\endgroup\N
\fi
- \snap at check{\@currname.\@currext}%
}
+\def\snap at intest@b#1#2#3#4{%
+ \def\@currname{#2}\def\@currext{#3}%
+ \begingroup \lccode`\/=`\0\relax\lowercase{\endgroup
+ \ifnum\snap at seldate#4 00 0\@nil>\z@
+ }% matches \lowercase
+ \save at some@catcodes
+ \@@input #1 \relax
+ \restore at some@catcodes
+ \else
+ \snap at specialtest{#1}{#4}%
+ \fi
+}
+\def\snap at specialtest#1#2{%
+ \fake at input{#1}%
+}
+\def\fake at input#1{%
+ \begingroup
+ % Ensure that outer \foo or unmatched braces don't trip us up
+ \catcode`\\=12 \catcode`\{=12 \catcode`\}=12
+ \endinput
+ \def\G{\@car\endgroup}%
+ \expandafter\futurelet\expandafter\?\expandafter\G\@@input#1 \relax\@nil
+}
+\let\snap at test@abort=\endinput
+\let\snap at selfcheck=\@empty
+\def\snap at finish{%%
+ \endgroup \message{^^J}%
+ \def\X##1{##1,\X}%
+ \edef\@filelist{\@xp\X\rqv at list{\@gobbletwo}}%
+ \def\X##1,?{##1}\edef\@filelist{\@xp\X\@filelist ?}%
+ \@dofilelist
+ \@@end
+}%
+\def\snap at mismatch#1#2#3{}
+\renewcommand{\RequireVersions}[2][]{%
+ \begingroup
+ \makeatletter
+ \def\snap at check{\snap at compare@versions}%%
+ \let\snapx at tfm=\snap at ignore
+ \def\ProvidesLanguage##1{\ProvidesFile{##1.ldf}}%
+ \iffalse{\fi \futurelet\@let at token\snap at branch #2}%
+ \endgroup
+}
\endinput
%%
%% End of file `snapshot.sty'.
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