breqn (28oct21)

git-svn-id: svn://tug.org/texlive/trunk@60881 c570f23f-e606-0410-a88d-b1316a301751

10 files changed, 101 insertions, 32 deletions

diff --git a/Master/texmf-dist/doc/latex/breqn/CHANGES.md b/Master/texmf-dist/doc/latex/breqn/CHANGES.md
index 26d5849594b..db0f313bcc9 100644
--- a/Master/texmf-dist/doc/latex/breqn/CHANGES.md
+++ b/Master/texmf-dist/doc/latex/breqn/CHANGES.md
@@ -1,5 +1,11 @@
 # Release notes for the `breqn` packages
 
+
+## v0.98l (2021/10/28)
+
+  * Prevent new LaTeX paragraph hooks from running and interfering unnecessarily with breqn internals (thanks Frank)
+
+
 ## v0.98k (2020/09/24)
 
   * Update patch code for new 2e kernel (thanks Ulrike)
diff --git a/Master/texmf-dist/doc/latex/breqn/breqn.pdf b/Master/texmf-dist/doc/latex/breqn/breqn.pdf
index 5db6488b0b8..2bb8adfda5f 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 f48961bd2a2..906adcb9c31 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 62fe0c3bd71..fb554077593 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 ce68c555b6b..bd33b11cfdb 100644
--- a/Master/texmf-dist/source/latex/breqn/breqn.dtx
+++ b/Master/texmf-dist/source/latex/breqn/breqn.dtx
@@ -151,8 +151,8 @@
 %
 %
 % \title{The \pkg{breqn} package}
-% \def\fileversion{0.98k}
-% \def\filedate{2020/09/24}
+% \def\fileversion{0.98l}
+% \def\filedate{2021/10/28}
 % \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}}
 %
@@ -1377,7 +1377,7 @@
 % Declare package name and date.
 %    \begin{macrocode}
 \RequirePackage{expl3}
-\ProvidesExplPackage{breqn}{2020/09/24}{0.98k}{Breaking equations}
+\ProvidesExplPackage{breqn}{2021/10/28}{0.98l}{Breaking equations}
 %    \end{macrocode}
 %   Regrettably, \pkg{breqn} is internally a mess, so we have to take
 %   some odd steps.
@@ -1458,6 +1458,30 @@
 %
 % \section{Some useful tools}
 %
+%
+%
+%  \begin{macro}{\MaybeRawNoindent}
+%    Breqn does a lot of low-level paragraph stuff which iesn't
+%    supposed to execute paragraph hooks, so with a newer \LaTeX{} it
+%    needs to run the versions that prevent the hooks from executing.
+%    \begin{macrocode}
+\providecommand\IfFormatAtLeastTF{\@ifl@t@r\fmtversion}
+%    \end{macrocode}
+%
+%    \begin{macrocode}
+\IfFormatAtLeastTF{2021/06/01}
+  {%
+    \def\MaybeRawNoindent{\ifvmode\expandafter\RawNoindent\fi}%
+  }%
+  {%
+   \let\MaybeRawNoindent\noindent
+   \let\RawParEnd\@@par
+  }
+%    \end{macrocode}
+%  \end{macro}
+%
+%
+%
 % \begin{macro}{\@nx}
 % \begin{macro}{\@xp}
 % The comparative brevity of \cs{@nx} and \cs{@xp} is
@@ -3114,19 +3138,25 @@
 \def\eq@typeset@L@single{%
   \nobreak
   \eq@params\eq@parshape
-  \nointerlineskip\noindent
+  \nointerlineskip
+%  \noindent
+  \MaybeRawNoindent
   \add@grp@label
   \rlap{\kern-\leftskip\box\EQ@numbox}%
   \if F\eq@frame
   \else
     \rlap{\raise\eq@firstht\hbox to\z@{\eq@addframe\hss}}%
   \fi
-  \eq@dump@box\unhbox\EQ@box \@@par
+  \eq@dump@box\unhbox\EQ@box
+  %\@@par
+  \RawParEnd
 }
 \def\eq@typeset@R@single{%
   \nobreak
   \eq@params\eq@parshape
-  \nointerlineskip\noindent
+  \nointerlineskip
+%  \noindent
+  \MaybeRawNoindent
   \add@grp@label
   \if F\eq@frame
   \else
@@ -3134,7 +3164,8 @@
   \fi
   \rlap{\kern-\leftskip\kern\linewidth\kern-\wd\EQ@numbox\copy\EQ@numbox}%
   \eq@dump@box\unhbox\EQ@box
-  \@@par
+  %\@@par
+  \RawParEnd
 }
 %    \end{macrocode}
 %
@@ -3535,7 +3566,9 @@
 \def\eq@startup{%
   \global\let\EQ@hasLHS\@False
   \setbox\z@\vbox\bgroup
-    \noindent \@@math \displaystyle
+%    \noindent
+    \MaybeRawNoindent                   % no matching \RawParEnd (implicit at box end)
+    \@@math \displaystyle
     \penalty-\@Mi
 }
 %    \end{macrocode}
@@ -5332,7 +5365,9 @@
 %    \begin{macrocode}
 \def\eq@dump@box#1#2{%
 %\debug@box#1%
-  \noindent #1#2\setbox\f@ur\lastbox \setbox\tw@\lastbox
+%  \noindent
+  \MaybeRawNoindent                                   % did not find the end yet
+  #1#2\setbox\f@ur\lastbox \setbox\tw@\lastbox
 %    \end{macrocode}
 % If the LHS contains shrinkable glue, in an L layout the alignment
 % could be thrown off if the first line is shrunk noticeably.
@@ -5609,9 +5644,13 @@
 \def\eq@typeset@equation{%
   \nobreak
   \eq@params\eq@parshape
-  \nointerlineskip\noindent
+  \nointerlineskip
+%  \noindent
+  \MaybeRawNoindent
   \add@grp@label
-  \eq@dump@box\unhbox\EQ@box\@@par
+  \eq@dump@box\unhbox\EQ@box
+%  \@@par
+  \RawParEnd
 }
 %    \end{macrocode}
 %
@@ -6007,7 +6046,9 @@
 % 10000, it means a sub and/or superscript is present on the right
 % delimiter and the box containing them must be taken off first.
 %    \begin{macrocode}
-  \noindent\unhbox\z@ \unskip
+%  \noindent
+  \MaybeRawNoindent
+  \unhbox\z@ \unskip
   \subsup@flag-\lastpenalty \unpenalty
   \xdef\right@delim@code{\number\lastpenalty}%
   \unpenalty
@@ -6029,7 +6070,9 @@
 % this complication.    The penalty value $-10001$ is a no-op case
 % in the case statement of \cs{eq@repacka}.
 %    \begin{macrocode}
-  \penalty-\@Mi\z@rule\@@par
+  \penalty-\@Mi\z@rule
+%  \@@par
+  \RawParEnd
   \setbox\z@\lastbox \unskip\unpenalty
 %%{\showboxbreadth\maxdimen\showboxdepth99\showlists}%
 }
diff --git a/Master/texmf-dist/source/latex/breqn/flexisym.dtx b/Master/texmf-dist/source/latex/breqn/flexisym.dtx
index b827447fc60..2973f3abc6d 100644
--- a/Master/texmf-dist/source/latex/breqn/flexisym.dtx
+++ b/Master/texmf-dist/source/latex/breqn/flexisym.dtx
@@ -79,8 +79,8 @@
 % \fi
 %
 % \title{The \textsf{flexisym} package}
-% \def\fileversion{0.98k}
-% \def\filedate{2020/09/24}
+% \def\fileversion{0.98l}
+% \def\filedate{2021/10/28}
 % \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}}
 %
@@ -98,7 +98,7 @@
 %    \begin{macrocode}
 %<*package>
 \RequirePackage{expl3}[2009/08/05]
-\ProvidesExplPackage{flexisym}{2020/09/24}{0.98k}{Make math characters macros}
+\ProvidesExplPackage{flexisym}{2021/10/28}{0.98l}{Make math characters macros}
 
 \edef\do{%
   \noexpand\AtEndOfPackage{%
diff --git a/Master/texmf-dist/source/latex/breqn/mathstyle.dtx b/Master/texmf-dist/source/latex/breqn/mathstyle.dtx
index 479b95b91db..b2c2e472713 100644
--- a/Master/texmf-dist/source/latex/breqn/mathstyle.dtx
+++ b/Master/texmf-dist/source/latex/breqn/mathstyle.dtx
@@ -58,8 +58,8 @@
 % \fi
 %
 % \title{The \textsf{mathstyle} package}
-% \def\fileversion{0.98k}
-% \def\filedate{2020/09/24}
+% \def\fileversion{0.98l}
+% \def\filedate{2021/10/28}
 % \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}}
 %
@@ -152,7 +152,7 @@
 %<*package>
 \NeedsTeXFormat{LaTeX2e}
 \RequirePackage{expl3}
-\ProvidesExplPackage{mathstyle}{2020/09/24}{0.98k}{Tracking mathstyle implicitly}
+\ProvidesExplPackage{mathstyle}{2021/10/28}{0.98l}{Tracking mathstyle implicitly}
 \ExplSyntaxOff
 %    \end{macrocode}
 %
diff --git a/Master/texmf-dist/tex/latex/breqn/breqn.sty b/Master/texmf-dist/tex/latex/breqn/breqn.sty
index aaccfbcd3ce..90ff9feeb5e 100644
--- a/Master/texmf-dist/tex/latex/breqn/breqn.sty
+++ b/Master/texmf-dist/tex/latex/breqn/breqn.sty
@@ -32,7 +32,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}
 \RequirePackage{expl3}
-\ProvidesExplPackage{breqn}{2020/09/24}{0.98k}{Breaking equations}
+\ProvidesExplPackage{breqn}{2021/10/28}{0.98l}{Breaking equations}
 \ExplSyntaxOff
 \edef\breqnpopcats{%
   \catcode\number`\"=\number\catcode`\"
@@ -55,6 +55,15 @@
 }
 \RequirePackage{keyval,calc}\relax
 \newcommand{\breqnsetup}[1]{\setkeys{breqn}{#1}}
+\providecommand\IfFormatAtLeastTF{\@ifl@t@r\fmtversion}
+\IfFormatAtLeastTF{2021/06/01}
+  {%
+    \def\MaybeRawNoindent{\ifvmode\expandafter\RawNoindent\fi}%
+  }%
+  {%
+   \let\MaybeRawNoindent\noindent
+   \let\RawParEnd\@@par
+  }
 \let\@nx\noexpand
 \let\@xp\expandafter
 \@ifundefined{@emptytoks}{\newtoks\@emptytoks}{}
@@ -545,19 +554,23 @@
 \def\eq@typeset@L@single{%
   \nobreak
   \eq@params\eq@parshape
-  \nointerlineskip\noindent
+  \nointerlineskip
+  \MaybeRawNoindent
   \add@grp@label
   \rlap{\kern-\leftskip\box\EQ@numbox}%
   \if F\eq@frame
   \else
     \rlap{\raise\eq@firstht\hbox to\z@{\eq@addframe\hss}}%
   \fi
-  \eq@dump@box\unhbox\EQ@box \@@par
+  \eq@dump@box\unhbox\EQ@box
+  %\@@par
+  \RawParEnd
 }
 \def\eq@typeset@R@single{%
   \nobreak
   \eq@params\eq@parshape
-  \nointerlineskip\noindent
+  \nointerlineskip
+  \MaybeRawNoindent
   \add@grp@label
   \if F\eq@frame
   \else
@@ -565,7 +578,8 @@
   \fi
   \rlap{\kern-\leftskip\kern\linewidth\kern-\wd\EQ@numbox\copy\EQ@numbox}%
   \eq@dump@box\unhbox\EQ@box
-  \@@par
+  %\@@par
+  \RawParEnd
 }
 \def\peek@branch#1#2{%
   \let\peek@b#1\let\peek@space#2\futurelet\@let@token\peek@a
@@ -709,7 +723,8 @@
 \def\eq@startup{%
   \global\let\EQ@hasLHS\@False
   \setbox\z@\vbox\bgroup
-    \noindent \@@math \displaystyle
+    \MaybeRawNoindent                   % no matching \RawParEnd (implicit at box end)
+    \@@math \displaystyle
     \penalty-\@Mi
 }
 \def\eq@setup@a{%
@@ -1274,7 +1289,8 @@
   \tolerance9999 \pretolerance\m@ne
 }
 \def\eq@dump@box#1#2{%
-  \noindent #1#2\setbox\f@ur\lastbox \setbox\tw@\lastbox
+  \MaybeRawNoindent                                   % did not find the end yet
+  #1#2\setbox\f@ur\lastbox \setbox\tw@\lastbox
   \if L\eq@layout \box\tw@ \else\unhbox\tw@\fi
   \adjust@rel@penalty \unhbox\f@ur
 }
@@ -1451,9 +1467,11 @@
 \def\eq@typeset@equation{%
   \nobreak
   \eq@params\eq@parshape
-  \nointerlineskip\noindent
+  \nointerlineskip
+  \MaybeRawNoindent
   \add@grp@label
-  \eq@dump@box\unhbox\EQ@box\@@par
+  \eq@dump@box\unhbox\EQ@box
+  \RawParEnd
 }
 \newcommand\eqframe[2]{%
   \begingroup
@@ -1617,7 +1635,8 @@
 }
 \def\eq@lrunpack{\setbox\z@\lastbox
   \unskip \nointerlineskip
-  \noindent\unhbox\z@ \unskip
+  \MaybeRawNoindent
+  \unhbox\z@ \unskip
   \subsup@flag-\lastpenalty \unpenalty
   \xdef\right@delim@code{\number\lastpenalty}%
   \unpenalty
@@ -1630,7 +1649,8 @@
   \ifvoid\tw@ \unhbox\z@
   \else \lrss@reattach % uses \subsup@flag, box\z@, box\tw@
   \fi
-  \penalty-\@Mi\z@rule\@@par
+  \penalty-\@Mi\z@rule
+  \RawParEnd
   \setbox\z@\lastbox \unskip\unpenalty
 %%{\showboxbreadth\maxdimen\showboxdepth99\showlists}%
 }
diff --git a/Master/texmf-dist/tex/latex/breqn/flexisym.sty b/Master/texmf-dist/tex/latex/breqn/flexisym.sty
index beac414fa82..e6cf3db1049 100644
--- a/Master/texmf-dist/tex/latex/breqn/flexisym.sty
+++ b/Master/texmf-dist/tex/latex/breqn/flexisym.sty
@@ -31,7 +31,7 @@
 %% flexisym.dtx, and mathstyle.dtx.
 %% 
 \RequirePackage{expl3}[2009/08/05]
-\ProvidesExplPackage{flexisym}{2020/09/24}{0.98k}{Make math characters macros}
+\ProvidesExplPackage{flexisym}{2021/10/28}{0.98l}{Make math characters macros}
 
 \edef\do{%
   \noexpand\AtEndOfPackage{%
diff --git a/Master/texmf-dist/tex/latex/breqn/mathstyle.sty b/Master/texmf-dist/tex/latex/breqn/mathstyle.sty
index 7d2e4c97c1a..884eb41e841 100644
--- a/Master/texmf-dist/tex/latex/breqn/mathstyle.sty
+++ b/Master/texmf-dist/tex/latex/breqn/mathstyle.sty
@@ -32,7 +32,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}
 \RequirePackage{expl3}
-\ProvidesExplPackage{mathstyle}{2020/09/24}{0.98k}{Tracking mathstyle implicitly}
+\ProvidesExplPackage{mathstyle}{2021/10/28}{0.98l}{Tracking mathstyle implicitly}
 \ExplSyntaxOff
 \providecommand\@saveprimitive[2]{%
   \begingroup