snapshot (22oct20)

git-svn-id: svn://tug.org/texlive/trunk@56735 c570f23f-e606-0410-a88d-b1316a301751

2 files changed, 114 insertions, 12 deletions

diff --git a/Master/texmf-dist/doc/latex/snapshot/README b/Master/texmf-dist/doc/latex/snapshot/README
index 570861d37d4..4c50606d36c 100644
--- a/Master/texmf-dist/doc/latex/snapshot/README
+++ b/Master/texmf-dist/doc/latex/snapshot/README
@@ -1,17 +1,119 @@
-README for snapshot                                    2019/09/17
-https://www.ams.org/arc/resources/snapshot-about.html
-tech-support@ams.org
+README file for package snapshot 2.14 [2020/06/17]
 
-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.
+Copyright 1999-2003, 2004, 2010, 2012, 2020 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.
+
+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@ams.org
+
+========================================================================
+                               CONTENTS
+I.   OVERVIEW
+II.  REMARKS ON THIS RELEASE
+II.  CHANGE LOG
+
+========================================================================
+I. OVERVIEW
+
+Complete documentation of all package options is available in
+snapshot.pdf.
+
+Typical usage involves the following steps:
+
+1. Add a \RequirePackage statement at the top of the document:
+
+       \RequirePackage{snapshot}
+       \documentclass{article}
+
+       \usepackage{graphicx}
+
+       \begin{document}
+
+       hello, world
+
+       \end{document}
+
+   Note that snapshot should be the very first thing loaded, even
+   before the \documentclass.  Otherwise snapshot will not be able to
+   capture the information for the document class and any packages
+   loaded inside it.
+
+2. Run LaTeX on the document. This will produce a dependency list in a
+   file \jobname.dep.
+
+3. Insert the .dep file at the top of the document, before
+   \documentclass. The following example shows what you would
+   typically end up with for a document that used the article
+   documentclass and the graphicx package:
+
+       \RequirePackage{snapshot}
+
+       \RequireVersions{
+         *{application}{pdfTeX}  {0000/00/00 v1.40.21}
+         *{format} {LaTeX2e}     {2020-02-02 v2.e}
+         *{package}{snapshot}    {2020/06/17 v2.14}
+         *{class}  {article}     {2019/12/20 v1.4l}
+         *{file}   {size10.clo}  {2019/12/20 v1.4l}
+         *{package}{graphicx}    {2019/11/30 v1.2a}
+         *{package}{keyval}      {2014/10/28 v1.15}
+         *{package}{graphics}    {2019/11/30 v1.4a}
+         *{package}{trig}        {2016/01/03 v1.10}
+         *{file}   {graphics.cfg}{2016/06/04 v1.11}
+         *{file}   {dvips.def}   {2017/06/20 v3.1d}
+         *{file}   {l3backend-dvips.def}{2020-05-05 v3}
+       }
+
+       \documentclass{article}
+       [...]
+
+   Now each time you recompile the document, snapshot will compare the
+   list of files actually loaded against the list recorded in
+   \RequireVersions and warn you of any changes.
+
+========================================================================
+II. REMARKS ON THIS RELEASE
+
+Since the snapshot package was originally released, there has been a
+tremendous amount of evolution among TeX engines (what snapshot calls
+the "application").  In addition to the introduction of two major new
+engines, three other engines that were once distinct have effectively
+merged.  The algorithm for detecting the identify of the engine has
+been updated to reflect the state of the TeX world as reflected in TeX
+Live 2020.
+
+COMPATIBILITY NOTE: As a result of these improvements, the
+*{application} entry of your documents will almost certainly change.
+The snapshot package does not warn of changes in this entry, but if
+you have an external application that makes use of this information,
+you will probably need to update it.
+
+========================================================================
+III. CHANGE LOG
+
+2020-06-17 snapshot.dtx v2.14
+    -- Added code to detect the aleph, ptex, eptex, uptex, euptex,
+       luatex, and xetex engines in addition to etex, pdftex, and
+       pdfetex.  Also distinguish between the various engines which
+       incorporate the eTeX extensions.
+    -- Made snapshot more tolerant of macros in the optional argument
+       to \Provides... declarations.
diff --git a/Master/texmf-dist/doc/latex/snapshot/snapshot.pdf b/Master/texmf-dist/doc/latex/snapshot/snapshot.pdf
index 0dfa0f13f6c..45cc249e311 100644
--- a/Master/texmf-dist/doc/latex/snapshot/snapshot.pdf
+++ b/Master/texmf-dist/doc/latex/snapshot/snapshot.pdf