breqn (15oct19)

git-svn-id: svn://tug.org/texlive/trunk@52397 c570f23f-e606-0410-a88d-b1316a301751

17 files changed, 97 insertions, 534 deletions

diff --git a/Master/texmf-dist/doc/latex/breqn/CHANGES.md b/Master/texmf-dist/doc/latex/breqn/CHANGES.md
index fb079f78cc8..aa4bb125113 100644
--- a/Master/texmf-dist/doc/latex/breqn/CHANGES.md
+++ b/Master/texmf-dist/doc/latex/breqn/CHANGES.md
@@ -1,10 +1,16 @@
 # Release notes for the `breqn` packages
 
-* v0.98f (2018/09/14)
+## v0.98g (2019/10/15)
+
+  * Fix for robustness change in LaTeX 2019.
+
+
+## v0.98f (2018/09/14)
 
   * Insert `\nolinenumbers` inside maths environments if the `lineno` package is loaded.
     It would be better to insert a line number, but at least with this the document still compiles!
 
-* v0.98e (2017/01/27)
+
+## v0.98e (2017/01/27)
 
   * Fix in `\mathchoice` to allow use under recent versions of LuaTeX
diff --git a/Master/texmf-dist/doc/latex/breqn/breqn.pdf b/Master/texmf-dist/doc/latex/breqn/breqn.pdf
index 90f25a563aa..cd7a452ac9a 100644
--- a/Master/texmf-dist/doc/latex/breqn/breqn.pdf
+++ b/Master/texmf-dist/doc/latex/breqn/breqn.pdf
diff --git a/Master/texmf-dist/doc/latex/breqn/flexisym.pdf b/Master/texmf-dist/doc/latex/breqn/flexisym.pdf
index 216df9adabb..0e4b5d1665f 100644
--- a/Master/texmf-dist/doc/latex/breqn/flexisym.pdf
+++ b/Master/texmf-dist/doc/latex/breqn/flexisym.pdf
diff --git a/Master/texmf-dist/doc/latex/breqn/mathstyle.pdf b/Master/texmf-dist/doc/latex/breqn/mathstyle.pdf
index 39d577182c0..3252d99482c 100644
--- a/Master/texmf-dist/doc/latex/breqn/mathstyle.pdf
+++ b/Master/texmf-dist/doc/latex/breqn/mathstyle.pdf
diff --git a/Master/texmf-dist/source/latex/breqn/breqn.dtx b/Master/texmf-dist/source/latex/breqn/breqn.dtx
index 6b93a18506d..1d0bee5c8f6 100644
--- a/Master/texmf-dist/source/latex/breqn/breqn.dtx
+++ b/Master/texmf-dist/source/latex/breqn/breqn.dtx
@@ -27,13 +27,7 @@
 %    CTAN:macros/latex/contrib/mh/breqn.pdf
 %
 % Unpacking:
-%    (a) If breqn.ins is present:
-%           tex breqn.ins
-%    (b) Without breqn.ins:
-%           tex breqn.dtx
-%    (c) If you insist on using LaTeX
-%           latex \let\install=y\input{breqn.dtx}
-%        (quote the arguments according to the demands of your shell)
+%           tex breqnbundle.ins
 %
 % Documentation:
 %    The class ltxdoc loads the configuration file ltxdoc.cfg
@@ -53,78 +47,8 @@
 %    TDS:doc/latex/breqn/breqn.pdf
 %    TDS:source/latex/breqn/breqn.dtx
 %
-%<*ignore>
-\begingroup
-  \def\x{LaTeX2e}
-\expandafter\endgroup
-\ifcase 0\ifx\install y1\fi\expandafter
-         \ifx\csname processbatchFile\endcsname\relax\else1\fi
-         \ifx\fmtname\x\else 1\fi\relax
-\else\csname fi\endcsname
-%</ignore>
-%<*install>
-\input docstrip.tex
-\Msg{************************************************************************}
-\Msg{* Installation: breqn}
-\Msg{************************************************************************}
-
-\keepsilent
-\askforoverwritefalse
-
-\preamble
-
-This is a generated file.
-
-Copyright (C) 1997-2003 by Michael J. Downes
-Copyright (C) 2007-2008 by Morten Hoegholm
-Copyright (C) 2007-2014 by Lars Madsen
-Copyright (C) 2007-2018 by Will Robertson
-Copyright (C) 2010-2017 by Joseph Wright
-
-This work may be distributed and/or modified under the
-conditions of the LaTeX Project Public License, either
-version 1.3 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 1.3 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 Will Robertson.
-
-This work consists of the main source file breqn.dtx
-and the derived files
-   breqn.sty, breqn.pdf, breqn.ins.
-
-\endpreamble
-
-\generate{%
-  \file{breqn.ins}{\from{breqn.dtx}{install}}%
-  \usedir{tex/latex/breqn}%
-  \file{breqn.sty}{\from{breqn.dtx}{package}}%
-}
-
-\obeyspaces
-\Msg{************************************************************************}
-\Msg{*}
-\Msg{* To finish the installation you have to move the following}
-\Msg{* file into a directory searched by TeX:}
-\Msg{*}
-\Msg{*     breqn.sty}
-\Msg{*}
-\Msg{* Happy TeXing!}
-\Msg{*}
-\Msg{************************************************************************}
-
-\endbatchfile
-%</install>
-%<*ignore>
-\fi
-%</ignore>
 %<*driver>
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesFile{breqn.drv}[2018/09/14 0.98f breqn]
 \documentclass{ltxdoc}
 \CodelineIndex
 \EnableCrossrefs
@@ -152,7 +76,6 @@ and the derived files
  \long\gdef\@gobble@percent@space#1{\ifx
    #1%\expandafter\@gobble\else\expandafter#1\fi}}
 
-
 \AtBeginDocument{\def\verbatim@processline{\expandafter\check@percent
   \the\verbatim@line\par}}
 \newwrite\tmp@out
@@ -179,16 +102,12 @@ and the derived files
   \par\medskip
 }
 
-
-
-
 \providecommand*\pkg[1]{\textsf{#1}}
 \providecommand*\cls[1]{\textsf{#1}}
 \providecommand*\opt[1]{\texttt{#1}}
 \providecommand*\env[1]{\texttt{#1}}
 \providecommand*\fn[1]{\texttt{#1}}
 
-
 \providecommand*\cn[1]{\cs{#1}}
 \providecommand*\csarg[1]{\texttt{\char`\{#1\char`\}}}
 
@@ -233,10 +152,10 @@ and the derived files
 % \fi
 %
 %
-% \GetFileInfo{breqn.drv}
-% \let\pkgdate\filedate\let\pkgversion\fileversion
 % \title{The \pkg{breqn} package}
-% \date{\pkg{breqn} bundle: \pkgdate\space\pkgversion}
+% \def\fileversion{0.98g}
+% \def\filedate{2019/10/15}
+% \date{\pkg{breqn} bundle: \filedate\space\fileversion}
 % \author{Authors: Michael J. Downes, Morten H\o gholm\\ Maintained by Morten H\o gholm, Will Robertson\\ Feedback: \texttt{https://github.com/wspr/breqn/issues}}
 %
 % \maketitle
@@ -1465,7 +1384,7 @@ and the derived files
 % Declare package name and date.
 %    \begin{macrocode}
 \RequirePackage{expl3}
-\ProvidesExplPackage{breqn}{2018/09/14}{0.98f}{Breaking equations}
+\ProvidesExplPackage{breqn}{2019/10/15}{0.98g}{Breaking equations}
 %    \end{macrocode}
 %   Regrettably, \pkg{breqn} is internally a mess, so we have to take
 %   some odd steps.
@@ -3476,8 +3395,15 @@ and the derived files
 % little care in saving the original meaning.
 %    \begin{macrocode}
 \def\@tempa#1\endcsname#2\@nil{\def\latex@end##1{#2}}
-\expandafter\@tempa\end{#1}\@nil
-\def\end#1{\csname end#1\endcsname \latex@end{#1}}%
+\ifcsname end \endcsname
+  % 2019: \end was made robust
+  \expandafter\expandafter\expandafter\@tempa\csname end \endcsname{#1}\@nil
+  \@namedef{end }#1{\csname end#1\endcsname \latex@end{#1}}%
+\else
+  % pre-2019: the old approach
+  \expandafter\@tempa\end{#1}\@nil
+  \def\end#1{\csname end#1\endcsname \latex@end{#1}}%
+\fi
 %    \end{macrocode}
 % Why don't we call \cs{CheckCommand} here?    Because that
 % doesn't help end users much; it works better to use it during package
diff --git a/Master/texmf-dist/source/latex/breqn/breqn.ins b/Master/texmf-dist/source/latex/breqn/breqnbundle.ins
index 4c1c5b316f9..e48619eeb21 100644
--- a/Master/texmf-dist/source/latex/breqn/breqn.ins
+++ b/Master/texmf-dist/source/latex/breqn/breqnbundle.ins
@@ -1,35 +1,3 @@
-%%
-%% This is file `breqn.ins',
-%% generated with the docstrip utility.
-%%
-%% The original source files were:
-%%
-%% breqn.dtx  (with options: `install')
-%% 
-%% This is a generated file.
-%% 
-%% Copyright (C) 1997-2003 by Michael J. Downes
-%% Copyright (C) 2007-2008 by Morten Hoegholm
-%% Copyright (C) 2007-2014 by Lars Madsen
-%% Copyright (C) 2007-2018 by Will Robertson
-%% Copyright (C) 2010-2017 by Joseph Wright
-%% 
-%% This work may be distributed and/or modified under the
-%% conditions of the LaTeX Project Public License, either
-%% version 1.3 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 1.3 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 Will Robertson.
-%% 
-%% This work consists of the main source file breqn.dtx
-%% and the derived files
-%%    breqn.sty, breqn.pdf, breqn.ins.
-%% 
 \input docstrip.tex
 \Msg{************************************************************************}
 \Msg{* Installation: breqn}
@@ -45,8 +13,8 @@ This is a generated file.
 Copyright (C) 1997-2003 by Michael J. Downes
 Copyright (C) 2007-2008 by Morten Hoegholm
 Copyright (C) 2007-2014 by Lars Madsen
-Copyright (C) 2007-2018 by Will Robertson
 Copyright (C) 2010-2017 by Joseph Wright
+Copyright (C) 2007-2019 by Will Robertson
 
 This work may be distributed and/or modified under the
 conditions of the LaTeX Project Public License, either
@@ -60,9 +28,8 @@ This work has the LPPL maintenance status "maintained".
 
 The Current Maintainer of this work is Will Robertson.
 
-This work consists of the main source file breqn.dtx
-and the derived files
-   breqn.sty, breqn.pdf, breqn.ins.
+This work consists of the main source file breqn.dtx,
+flexisym.dtx, and mathstyle.dtx.
 
 \endpreamble
 
@@ -72,6 +39,22 @@ and the derived files
   \file{breqn.sty}{\from{breqn.dtx}{package}}%
 }
 
+\generate{%
+  \file{flexisym.ins}{\from{flexisym.dtx}{install}}%
+  \usedir{tex/latex/breqn}%
+  \file{flexisym.sty}{\from{flexisym.dtx}{package}}%
+  \file{cmbase.sym}{\from{flexisym.dtx}{cmbase}}%
+  \file{mathpazo.sym}{\from{flexisym.dtx}{mathpazo}}%
+  \file{mathptmx.sym}{\from{flexisym.dtx}{mathptmx}}%
+  \file{msabm.sym}{\from{flexisym.dtx}{msabm}}%
+}
+
+\generate{%
+  \file{mathstyle.ins}{\from{mathstyle.dtx}{install}}%
+  \usedir{tex/latex/breqn}%
+  \file{mathstyle.sty}{\from{mathstyle.dtx}{package}}%
+}
+
 \obeyspaces
 \Msg{************************************************************************}
 \Msg{*}
@@ -79,6 +62,8 @@ and the derived files
 \Msg{* file into a directory searched by TeX:}
 \Msg{*}
 \Msg{*     breqn.sty}
+\Msg{*     flexisym.sty, cmbase.sym, mathpazo.sym, mathptmx.sym, msabm.sym}
+\Msg{*     mathstyle.sty}
 \Msg{*}
 \Msg{* Happy TeXing!}
 \Msg{*}
@@ -87,5 +72,3 @@ and the derived files
 \endbatchfile
 
 \endinput
-%%
-%% End of file `breqn.ins'.
diff --git a/Master/texmf-dist/source/latex/breqn/flexisym.dtx b/Master/texmf-dist/source/latex/breqn/flexisym.dtx
index 42188753a26..fe08839094b 100644
--- a/Master/texmf-dist/source/latex/breqn/flexisym.dtx
+++ b/Master/texmf-dist/source/latex/breqn/flexisym.dtx
@@ -3,8 +3,8 @@
 % Copyright (C) 1997-2003 by Michael J. Downes
 % Copyright (C) 2007-2008 by Morten Hoegholm
 % Copyright (C) 2007-2014 by Lars Madsen
-% Copyright (C) 2007-2017 by Will Robertson
 % Copyright (C) 2010-2017 by Joseph Wright
+% Copyright (C) 2007-2019 by Will Robertson
 %
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either
@@ -28,13 +28,7 @@
 %    CTAN:macros/latex/contrib/mh/flexisym.pdf
 %
 % Unpacking:
-%    (a) If flexisym.ins is present:
-%           tex flexisym.ins
-%    (b) Without flexisym.ins:
-%           tex flexisym.dtx
-%    (c) If you insist on using LaTeX
-%           latex \let\install=y\input{flexisym.dtx}
-%        (quote the arguments according to the demands of your shell)
+%           tex breqnbundle.ins
 %
 % Documentation:
 %    The class ltxdoc loads the configuration file ltxdoc.cfg
@@ -58,83 +52,8 @@
 %    TDS:doc/latex/breqn/flexisym.pdf
 %    TDS:source/latex/breqn/flexisym.dtx
 %
-%<*ignore>
-\begingroup
-  \def\x{LaTeX2e}
-\expandafter\endgroup
-\ifcase 0\ifx\install y1\fi\expandafter
-         \ifx\csname processbatchFile\endcsname\relax\else1\fi
-         \ifx\fmtname\x\else 1\fi\relax
-\else\csname fi\endcsname
-%</ignore>
-%<*install>
-\input docstrip.tex
-\Msg{************************************************************************}
-\Msg{* Installation: flexisym}
-\Msg{************************************************************************}
-
-\keepsilent
-\askforoverwritefalse
-
-\preamble
-
-This is a generated file.
-
-Copyright (C) 1997-2003 by Michael J. Downes
-Copyright (C) 2007-2010 by Morten Hoegholm
-Copyright (C) 2007-2014 by Lars Madsen
-Copyright (C) 2007-2017 by Will Robertson
-Copyright (C) 2010-2017 by Joseph Wright
-
-This work may be distributed and/or modified under the
-conditions of the LaTeX Project Public License, either
-version 1.3 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 1.3 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 Will Robertson.
-
-This work consists of the main source file flexisym.dtx
-and the derived files
-   flexisym.sty, flexisym.pdf, flexisym.ins,
-   cmbase.sym, mathpazo.sym, mathptmx.sym, msabm.sym.
-
-\endpreamble
-
-\generate{%
-  \file{flexisym.ins}{\from{flexisym.dtx}{install}}%
-  \usedir{tex/latex/breqn}%
-  \file{flexisym.sty}{\from{flexisym.dtx}{package}}%
-  \file{cmbase.sym}{\from{flexisym.dtx}{cmbase}}%
-  \file{mathpazo.sym}{\from{flexisym.dtx}{mathpazo}}%
-  \file{mathptmx.sym}{\from{flexisym.dtx}{mathptmx}}%
-  \file{msabm.sym}{\from{flexisym.dtx}{msabm}}%
-}
-
-\obeyspaces
-\Msg{************************************************************************}
-\Msg{*}
-\Msg{* To finish the installation you have to move the following}
-\Msg{* files into a directory searched by TeX:}
-\Msg{*}
-\Msg{*     flexisym.sty, cmbase.sym, mathpazo.sym, mathptmx.sym, msabm.sym}
-\Msg{*}
-\Msg{* Happy TeXing!}
-\Msg{*}
-\Msg{************************************************************************}
-
-\endbatchfile
-%</install>
-%<*ignore>
-\fi
-%</ignore>
 %<*driver>
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesFile{flexisym.drv}[2017/01/27 0.98e flexisym]
 \documentclass{ltxdoc}
 \CodelineIndex
 \EnableCrossrefs
@@ -158,8 +77,9 @@ and the derived files
 %</driver>
 % \fi
 %
-% \GetFileInfo{flexisym.drv}
 % \title{The \textsf{flexisym} package}
+% \def\fileversion{0.98g}
+% \def\filedate{2019/10/15}
 % \date{\filedate\space\fileversion}
 % \author{Authors: Michael J. Downes, Morten H\o gholm\\ Maintained by Morten H\o gholm, Will Robertson\\ Feedback: \texttt{https://github.com/wspr/breqn/issues}}
 %
@@ -177,7 +97,7 @@ and the derived files
 %    \begin{macrocode}
 %<*package>
 \RequirePackage{expl3}[2009/08/05]
-\ProvidesExplPackage{flexisym}{2017/01/27}{0.98e}{Make math characters macros}
+\ProvidesExplPackage{flexisym}{2019/10/15}{0.98g}{Make math characters macros}
 
 \edef\do{%
   \noexpand\AtEndOfPackage{%
diff --git a/Master/texmf-dist/source/latex/breqn/flexisym.ins b/Master/texmf-dist/source/latex/breqn/flexisym.ins
deleted file mode 100644
index bed8a528d5b..00000000000
--- a/Master/texmf-dist/source/latex/breqn/flexisym.ins
+++ /dev/null
@@ -1,96 +0,0 @@
-%%
-%% This is file `flexisym.ins',
-%% generated with the docstrip utility.
-%%
-%% The original source files were:
-%%
-%% flexisym.dtx  (with options: `install')
-%% 
-%% This is a generated file.
-%% 
-%% Copyright (C) 1997-2003 by Michael J. Downes
-%% Copyright (C) 2007-2010 by Morten Hoegholm
-%% Copyright (C) 2007-2014 by Lars Madsen
-%% Copyright (C) 2007-2017 by Will Robertson
-%% Copyright (C) 2010-2017 by Joseph Wright
-%% 
-%% This work may be distributed and/or modified under the
-%% conditions of the LaTeX Project Public License, either
-%% version 1.3 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 1.3 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 Will Robertson.
-%% 
-%% This work consists of the main source file flexisym.dtx
-%% and the derived files
-%%    flexisym.sty, flexisym.pdf, flexisym.ins,
-%%    cmbase.sym, mathpazo.sym, mathptmx.sym, msabm.sym.
-%% 
-\input docstrip.tex
-\Msg{************************************************************************}
-\Msg{* Installation: flexisym}
-\Msg{************************************************************************}
-
-\keepsilent
-\askforoverwritefalse
-
-\preamble
-
-This is a generated file.
-
-Copyright (C) 1997-2003 by Michael J. Downes
-Copyright (C) 2007-2010 by Morten Hoegholm
-Copyright (C) 2007-2014 by Lars Madsen
-Copyright (C) 2007-2017 by Will Robertson
-Copyright (C) 2010-2017 by Joseph Wright
-
-This work may be distributed and/or modified under the
-conditions of the LaTeX Project Public License, either
-version 1.3 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 1.3 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 Will Robertson.
-
-This work consists of the main source file flexisym.dtx
-and the derived files
-   flexisym.sty, flexisym.pdf, flexisym.ins,
-   cmbase.sym, mathpazo.sym, mathptmx.sym, msabm.sym.
-
-\endpreamble
-
-\generate{%
-  \file{flexisym.ins}{\from{flexisym.dtx}{install}}%
-  \usedir{tex/latex/breqn}%
-  \file{flexisym.sty}{\from{flexisym.dtx}{package}}%
-  \file{cmbase.sym}{\from{flexisym.dtx}{cmbase}}%
-  \file{mathpazo.sym}{\from{flexisym.dtx}{mathpazo}}%
-  \file{mathptmx.sym}{\from{flexisym.dtx}{mathptmx}}%
-  \file{msabm.sym}{\from{flexisym.dtx}{msabm}}%
-}
-
-\obeyspaces
-\Msg{************************************************************************}
-\Msg{*}
-\Msg{* To finish the installation you have to move the following}
-\Msg{* files into a directory searched by TeX:}
-\Msg{*}
-\Msg{*     flexisym.sty, cmbase.sym, mathpazo.sym, mathptmx.sym, msabm.sym}
-\Msg{*}
-\Msg{* Happy TeXing!}
-\Msg{*}
-\Msg{************************************************************************}
-
-\endbatchfile
-\endinput
-%%
-%% End of file `flexisym.ins'.
diff --git a/Master/texmf-dist/source/latex/breqn/mathstyle.dtx b/Master/texmf-dist/source/latex/breqn/mathstyle.dtx
index cc99d8b842c..73b90525167 100644
--- a/Master/texmf-dist/source/latex/breqn/mathstyle.dtx
+++ b/Master/texmf-dist/source/latex/breqn/mathstyle.dtx
@@ -3,8 +3,8 @@
 % Copyright (C) 1997-2003 by Michael J. Downes
 % Copyright (C) 2007-2008 by Morten Hoegholm
 % Copyright (C) 2007-2014 by Lars Madsen
-% Copyright (C) 2007-2017 by Will Robertson
 % Copyright (C) 2010-2017 by Joseph Wright
+% Copyright (C) 2007-2019 by Will Robertson
 %
 % This work may be distributed and/or modified under the
 % conditions of the LaTeX Project Public License, either
@@ -27,13 +27,7 @@
 %    CTAN:macros/latex/contrib/mh/mathstyle.pdf
 %
 % Unpacking:
-%    (a) If mathstyle.ins is present:
-%           tex mathstyle.ins
-%    (b) Without mathstyle.ins:
-%           tex mathstyle.dtx
-%    (c) If you insist on using LaTeX
-%           latex \let\install=y\input{mathstyle.dtx}
-%        (quote the arguments according to the demands of your shell)
+%           tex breqnbundle.ins
 %
 % Documentation:
 %    The class ltxdoc loads the configuration file ltxdoc.cfg
@@ -53,89 +47,8 @@
 %    TDS:doc/latex/breqn/mathstyle.pdf
 %    TDS:source/latex/breqn/mathstyle.dtx
 %
-%<*ignore>
-\begingroup
-  \def\x{LaTeX2e}
-\expandafter\endgroup
-\ifcase 0\ifx\install y1\fi\expandafter
-         \ifx\csname processbatchFile\endcsname\relax\else1\fi
-         \ifx\fmtname\x\else 1\fi\relax
-\else\csname fi\endcsname
-%</ignore>
-%<*install>
-\input docstrip.tex
-\Msg{************************************************************************}
-\Msg{* Installation for package: mathstyle}
-\Msg{************************************************************************}
-
-\keepsilent
-\askforoverwritefalse
-
-\preamble
-
-This is a generated file.
-
-Copyright (C) 1997-2003 by Michael J. Downes
-Copyright (C) 2007-2011 by Morten Hoegholm et al
-Copyright (C) 2007-2014 by Lars Madsen
-Copyright (C) 2007-2017 by Will Robertson
-Copyright (C) 2010-2017 by Joseph Wright
-
-This work may be distributed and/or modified under the
-conditions of the LaTeX Project Public License, either
-version 1.3 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 1.3 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 Will Robertson.
-
-This work consists of the main source file mathstyle.dtx
-and the derived files
-   mathstyle.sty, mathstyle.pdf, mathstyle.ins.
-
-\endpreamble
-
-\generate{%
-  \file{mathstyle.ins}{\from{mathstyle.dtx}{install}}%
-  \usedir{tex/latex/breqn}%
-  \file{mathstyle.sty}{\from{mathstyle.dtx}{package}}%
-}
-
-\obeyspaces
-\Msg{************************************************************************}
-\Msg{*}
-\Msg{* To finish the installation you have to move the following}
-\Msg{* file into a directory searched by TeX:}
-\Msg{*}
-\Msg{*     mathstyle.sty}
-\Msg{*}
-\Msg{* Happy TeXing!}
-\Msg{*}
-\Msg{************************************************************************}
-
-\endbatchfile
-%</install>
-%<*ignore>
-\fi
-%</ignore>
-%
-%<*driver>
-\ProvidesFile{mathstyle.drv}
-%</driver>
-%<package>\NeedsTeXFormat{LaTeX2e}
-%<package>\ProvidesPackage{mathstyle}
-%<*package|driver>
-  [2017/01/27 0.98e Tracking mathstyle implicitly]
-%</package|driver>
 %<*driver>
 \documentclass{ltxdoc}
-\CodelineIndex
-\EnableCrossrefs
-\setcounter{IndexColumns}{2}
 \providecommand*\pkg[1]{\textsf{#1}}
 \begin{document}
   \DocInput{mathstyle.dtx}
@@ -143,8 +56,9 @@ and the derived files
 %</driver>
 % \fi
 %
-% \GetFileInfo{mathstyle.drv}
 % \title{The \textsf{mathstyle} package}
+% \def\fileversion{0.98g}
+% \def\filedate{2019/10/15}
 % \date{\filedate\quad\fileversion}
 % \author{Authors: Michael J. Downes, Morten H\o gholm\\ Maintained by Morten H\o gholm, Will Robertson\\ Feedback: \texttt{https://github.com/wspr/breqn/issues}}
 %
@@ -235,6 +149,10 @@ and the derived files
 %
 %    \begin{macrocode}
 %<*package>
+\NeedsTeXFormat{LaTeX2e}
+\RequirePackage{expl3}
+\ProvidesExplPackage{mathstyle}{2019/10/15}{0.98g}{Tracking mathstyle implicitly}
+\ExplSyntaxOff
 %    \end{macrocode}
 %
 % \begin{macro}{\@saveprimitive}
diff --git a/Master/texmf-dist/source/latex/breqn/mathstyle.ins b/Master/texmf-dist/source/latex/breqn/mathstyle.ins
deleted file mode 100644
index 79d6f7390c6..00000000000
--- a/Master/texmf-dist/source/latex/breqn/mathstyle.ins
+++ /dev/null
@@ -1,90 +0,0 @@
-%%
-%% This is file `mathstyle.ins',
-%% generated with the docstrip utility.
-%%
-%% The original source files were:
-%%
-%% mathstyle.dtx  (with options: `install')
-%% 
-%% This is a generated file.
-%% 
-%% Copyright (C) 1997-2003 by Michael J. Downes
-%% Copyright (C) 2007-2011 by Morten Hoegholm et al
-%% Copyright (C) 2007-2014 by Lars Madsen
-%% Copyright (C) 2007-2017 by Will Robertson
-%% Copyright (C) 2010-2017 by Joseph Wright
-%% 
-%% This work may be distributed and/or modified under the
-%% conditions of the LaTeX Project Public License, either
-%% version 1.3 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 1.3 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 Will Robertson.
-%% 
-%% This work consists of the main source file mathstyle.dtx
-%% and the derived files
-%%    mathstyle.sty, mathstyle.pdf, mathstyle.ins.
-%% 
-\input docstrip.tex
-\Msg{************************************************************************}
-\Msg{* Installation for package: mathstyle}
-\Msg{************************************************************************}
-
-\keepsilent
-\askforoverwritefalse
-
-\preamble
-
-This is a generated file.
-
-Copyright (C) 1997-2003 by Michael J. Downes
-Copyright (C) 2007-2011 by Morten Hoegholm et al
-Copyright (C) 2007-2014 by Lars Madsen
-Copyright (C) 2007-2017 by Will Robertson
-Copyright (C) 2010-2017 by Joseph Wright
-
-This work may be distributed and/or modified under the
-conditions of the LaTeX Project Public License, either
-version 1.3 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 1.3 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 Will Robertson.
-
-This work consists of the main source file mathstyle.dtx
-and the derived files
-   mathstyle.sty, mathstyle.pdf, mathstyle.ins.
-
-\endpreamble
-
-\generate{%
-  \file{mathstyle.ins}{\from{mathstyle.dtx}{install}}%
-  \usedir{tex/latex/breqn}%
-  \file{mathstyle.sty}{\from{mathstyle.dtx}{package}}%
-}
-
-\obeyspaces
-\Msg{************************************************************************}
-\Msg{*}
-\Msg{* To finish the installation you have to move the following}
-\Msg{* file into a directory searched by TeX:}
-\Msg{*}
-\Msg{*     mathstyle.sty}
-\Msg{*}
-\Msg{* Happy TeXing!}
-\Msg{*}
-\Msg{************************************************************************}
-
-\endbatchfile
-\endinput
-%%
-%% End of file `mathstyle.ins'.
diff --git a/Master/texmf-dist/tex/latex/breqn/breqn.sty b/Master/texmf-dist/tex/latex/breqn/breqn.sty
index 93b49aa70b8..aec20ed3411 100644
--- a/Master/texmf-dist/tex/latex/breqn/breqn.sty
+++ b/Master/texmf-dist/tex/latex/breqn/breqn.sty
@@ -11,8 +11,8 @@
 %% Copyright (C) 1997-2003 by Michael J. Downes
 %% Copyright (C) 2007-2008 by Morten Hoegholm
 %% Copyright (C) 2007-2014 by Lars Madsen
-%% Copyright (C) 2007-2018 by Will Robertson
 %% Copyright (C) 2010-2017 by Joseph Wright
+%% Copyright (C) 2007-2019 by Will Robertson
 %% 
 %% This work may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either
@@ -26,13 +26,12 @@
 %% 
 %% The Current Maintainer of this work is Will Robertson.
 %% 
-%% This work consists of the main source file breqn.dtx
-%% and the derived files
-%%    breqn.sty, breqn.pdf, breqn.ins.
+%% This work consists of the main source file breqn.dtx,
+%% flexisym.dtx, and mathstyle.dtx.
 %% 
 \NeedsTeXFormat{LaTeX2e}
 \RequirePackage{expl3}
-\ProvidesExplPackage{breqn}{2018/09/14}{0.98f}{Breaking equations}
+\ProvidesExplPackage{breqn}{2019/10/15}{0.98g}{Breaking equations}
 \ExplSyntaxOff
 \edef\breqnpopcats{%
   \catcode\number`\"=\number\catcode`\"
@@ -645,8 +644,15 @@
   \end{#2}%
 }
 \def\@tempa#1\endcsname#2\@nil{\def\latex@end##1{#2}}
-\expandafter\@tempa\end{#1}\@nil
-\def\end#1{\csname end#1\endcsname \latex@end{#1}}%
+\ifcsname end \endcsname
+  % 2019: \end was made robust
+  \expandafter\expandafter\expandafter\@tempa\csname end \endcsname{#1}\@nil
+  \@namedef{end }#1{\csname end#1\endcsname \latex@end{#1}}%
+\else
+  % pre-2019: the old approach
+  \expandafter\@tempa\end{#1}\@nil
+  \def\end#1{\csname end#1\endcsname \latex@end{#1}}%
+\fi
 \def\check@punct@or@qed#1{%
   \xdef\found@punct{\@empty}% BRM: punctuation was being remembered past this eqn.
   % WSPR: err, why isn't that just \global\let\found@punct\@empty ?
diff --git a/Master/texmf-dist/tex/latex/breqn/cmbase.sym b/Master/texmf-dist/tex/latex/breqn/cmbase.sym
index 12022833aa7..7bb63424150 100644
--- a/Master/texmf-dist/tex/latex/breqn/cmbase.sym
+++ b/Master/texmf-dist/tex/latex/breqn/cmbase.sym
@@ -9,10 +9,10 @@
 %% This is a generated file.
 %% 
 %% Copyright (C) 1997-2003 by Michael J. Downes
-%% Copyright (C) 2007-2010 by Morten Hoegholm
+%% Copyright (C) 2007-2008 by Morten Hoegholm
 %% Copyright (C) 2007-2014 by Lars Madsen
-%% Copyright (C) 2007-2017 by Will Robertson
 %% Copyright (C) 2010-2017 by Joseph Wright
+%% Copyright (C) 2007-2019 by Will Robertson
 %% 
 %% This work may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either
@@ -26,10 +26,8 @@
 %% 
 %% The Current Maintainer of this work is Will Robertson.
 %% 
-%% This work consists of the main source file flexisym.dtx
-%% and the derived files
-%%    flexisym.sty, flexisym.pdf, flexisym.ins,
-%%    cmbase.sym, mathpazo.sym, mathptmx.sym, msabm.sym.
+%% This work consists of the main source file breqn.dtx,
+%% flexisym.dtx, and mathstyle.dtx.
 %% 
 \ProvidesSymbols{cmbase}[2007/12/19 v0.92]
 \ExplSyntaxOn
diff --git a/Master/texmf-dist/tex/latex/breqn/flexisym.sty b/Master/texmf-dist/tex/latex/breqn/flexisym.sty
index fafe12f071a..153fe52a140 100644
--- a/Master/texmf-dist/tex/latex/breqn/flexisym.sty
+++ b/Master/texmf-dist/tex/latex/breqn/flexisym.sty
@@ -9,10 +9,10 @@
 %% This is a generated file.
 %% 
 %% Copyright (C) 1997-2003 by Michael J. Downes
-%% Copyright (C) 2007-2010 by Morten Hoegholm
+%% Copyright (C) 2007-2008 by Morten Hoegholm
 %% Copyright (C) 2007-2014 by Lars Madsen
-%% Copyright (C) 2007-2017 by Will Robertson
 %% Copyright (C) 2010-2017 by Joseph Wright
+%% Copyright (C) 2007-2019 by Will Robertson
 %% 
 %% This work may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either
@@ -26,13 +26,11 @@
 %% 
 %% The Current Maintainer of this work is Will Robertson.
 %% 
-%% This work consists of the main source file flexisym.dtx
-%% and the derived files
-%%    flexisym.sty, flexisym.pdf, flexisym.ins,
-%%    cmbase.sym, mathpazo.sym, mathptmx.sym, msabm.sym.
+%% This work consists of the main source file breqn.dtx,
+%% flexisym.dtx, and mathstyle.dtx.
 %% 
 \RequirePackage{expl3}[2009/08/05]
-\ProvidesExplPackage{flexisym}{2017/01/27}{0.98e}{Make math characters macros}
+\ProvidesExplPackage{flexisym}{2019/10/15}{0.98g}{Make math characters macros}
 
 \edef\do{%
   \noexpand\AtEndOfPackage{%
diff --git a/Master/texmf-dist/tex/latex/breqn/mathpazo.sym b/Master/texmf-dist/tex/latex/breqn/mathpazo.sym
index 186e92057d7..804d6c880d8 100644
--- a/Master/texmf-dist/tex/latex/breqn/mathpazo.sym
+++ b/Master/texmf-dist/tex/latex/breqn/mathpazo.sym
@@ -9,10 +9,10 @@
 %% This is a generated file.
 %% 
 %% Copyright (C) 1997-2003 by Michael J. Downes
-%% Copyright (C) 2007-2010 by Morten Hoegholm
+%% Copyright (C) 2007-2008 by Morten Hoegholm
 %% Copyright (C) 2007-2014 by Lars Madsen
-%% Copyright (C) 2007-2017 by Will Robertson
 %% Copyright (C) 2010-2017 by Joseph Wright
+%% Copyright (C) 2007-2019 by Will Robertson
 %% 
 %% This work may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either
@@ -26,10 +26,8 @@
 %% 
 %% The Current Maintainer of this work is Will Robertson.
 %% 
-%% This work consists of the main source file flexisym.dtx
-%% and the derived files
-%%    flexisym.sty, flexisym.pdf, flexisym.ins,
-%%    cmbase.sym, mathpazo.sym, mathptmx.sym, msabm.sym.
+%% This work consists of the main source file breqn.dtx,
+%% flexisym.dtx, and mathstyle.dtx.
 %% 
 \ProvidesSymbols{mathpazo}[2010/07/11 v0.3]
 \ExplSyntaxOn
diff --git a/Master/texmf-dist/tex/latex/breqn/mathptmx.sym b/Master/texmf-dist/tex/latex/breqn/mathptmx.sym
index f8427ebc1ca..75b56b21469 100644
--- a/Master/texmf-dist/tex/latex/breqn/mathptmx.sym
+++ b/Master/texmf-dist/tex/latex/breqn/mathptmx.sym
@@ -9,10 +9,10 @@
 %% This is a generated file.
 %% 
 %% Copyright (C) 1997-2003 by Michael J. Downes
-%% Copyright (C) 2007-2010 by Morten Hoegholm
+%% Copyright (C) 2007-2008 by Morten Hoegholm
 %% Copyright (C) 2007-2014 by Lars Madsen
-%% Copyright (C) 2007-2017 by Will Robertson
 %% Copyright (C) 2010-2017 by Joseph Wright
+%% Copyright (C) 2007-2019 by Will Robertson
 %% 
 %% This work may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either
@@ -26,10 +26,8 @@
 %% 
 %% The Current Maintainer of this work is Will Robertson.
 %% 
-%% This work consists of the main source file flexisym.dtx
-%% and the derived files
-%%    flexisym.sty, flexisym.pdf, flexisym.ins,
-%%    cmbase.sym, mathpazo.sym, mathptmx.sym, msabm.sym.
+%% This work consists of the main source file breqn.dtx,
+%% flexisym.dtx, and mathstyle.dtx.
 %% 
 \ProvidesSymbols{mathptmx}[2010/07/11 v0.3]
 \ExplSyntaxOn
diff --git a/Master/texmf-dist/tex/latex/breqn/mathstyle.sty b/Master/texmf-dist/tex/latex/breqn/mathstyle.sty
index 6910ff6f92a..7001fa84726 100644
--- a/Master/texmf-dist/tex/latex/breqn/mathstyle.sty
+++ b/Master/texmf-dist/tex/latex/breqn/mathstyle.sty
@@ -9,10 +9,10 @@
 %% This is a generated file.
 %% 
 %% Copyright (C) 1997-2003 by Michael J. Downes
-%% Copyright (C) 2007-2011 by Morten Hoegholm et al
+%% Copyright (C) 2007-2008 by Morten Hoegholm
 %% Copyright (C) 2007-2014 by Lars Madsen
-%% Copyright (C) 2007-2017 by Will Robertson
 %% Copyright (C) 2010-2017 by Joseph Wright
+%% Copyright (C) 2007-2019 by Will Robertson
 %% 
 %% This work may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either
@@ -26,13 +26,13 @@
 %% 
 %% The Current Maintainer of this work is Will Robertson.
 %% 
-%% This work consists of the main source file mathstyle.dtx
-%% and the derived files
-%%    mathstyle.sty, mathstyle.pdf, mathstyle.ins.
+%% This work consists of the main source file breqn.dtx,
+%% flexisym.dtx, and mathstyle.dtx.
 %% 
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesPackage{mathstyle}
-  [2017/01/27 0.98e Tracking mathstyle implicitly]
+\RequirePackage{expl3}
+\ProvidesExplPackage{mathstyle}{2019/10/15}{0.98g}{Tracking mathstyle implicitly}
+\ExplSyntaxOff
 \providecommand\@saveprimitive[2]{%
   \begingroup
   \edef\@tempa{\string#1}\edef\@tempb{\meaning#1}%
diff --git a/Master/texmf-dist/tex/latex/breqn/msabm.sym b/Master/texmf-dist/tex/latex/breqn/msabm.sym
index 8bea04f8a29..044ab1bacd7 100644
--- a/Master/texmf-dist/tex/latex/breqn/msabm.sym
+++ b/Master/texmf-dist/tex/latex/breqn/msabm.sym
@@ -9,10 +9,10 @@
 %% This is a generated file.
 %% 
 %% Copyright (C) 1997-2003 by Michael J. Downes
-%% Copyright (C) 2007-2010 by Morten Hoegholm
+%% Copyright (C) 2007-2008 by Morten Hoegholm
 %% Copyright (C) 2007-2014 by Lars Madsen
-%% Copyright (C) 2007-2017 by Will Robertson
 %% Copyright (C) 2010-2017 by Joseph Wright
+%% Copyright (C) 2007-2019 by Will Robertson
 %% 
 %% This work may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either
@@ -26,10 +26,8 @@
 %% 
 %% The Current Maintainer of this work is Will Robertson.
 %% 
-%% This work consists of the main source file flexisym.dtx
-%% and the derived files
-%%    flexisym.sty, flexisym.pdf, flexisym.ins,
-%%    cmbase.sym, mathpazo.sym, mathptmx.sym, msabm.sym.
+%% This work consists of the main source file breqn.dtx,
+%% flexisym.dtx, and mathstyle.dtx.
 %% 
 \ProvidesSymbols{msabm}[2001/09/08 v0.91]
 \ExplSyntaxOn