summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/source/latex/latex-lab/latex-lab-mathtools.dtx
diff options
context:
space:
mode:
Diffstat (limited to 'Master/texmf-dist/source/latex/latex-lab/latex-lab-mathtools.dtx')
-rw-r--r--Master/texmf-dist/source/latex/latex-lab/latex-lab-mathtools.dtx223
1 files changed, 223 insertions, 0 deletions
diff --git a/Master/texmf-dist/source/latex/latex-lab/latex-lab-mathtools.dtx b/Master/texmf-dist/source/latex/latex-lab/latex-lab-mathtools.dtx
new file mode 100644
index 00000000000..c3f43243b10
--- /dev/null
+++ b/Master/texmf-dist/source/latex/latex-lab/latex-lab-mathtools.dtx
@@ -0,0 +1,223 @@
+% \iffalse meta-comment
+%
+%% File: latex-lab-mathtools.dtx
+%
+% Copyright (C) 2022,2023 The LaTeX Project
+%
+% It may be distributed and/or modified under the conditions of the
+% LaTeX Project Public License (LPPL), either version 1.3c of this
+% license or (at your option) any later version. The latest version
+% of this license is in the file
+%
+% https://www.latex-project.org/lppl.txt
+%
+%
+% The development version of the bundle can be found below
+%
+% https://github.com/latex3/latex2e/required/latex-lab
+%
+% for those people who are interested or want to report an issue.
+%
+%<*driver>
+\documentclass{l3doc}
+\EnableCrossrefs
+\CodelineIndex
+\begin{document}
+ \DocInput{latex-lab-amsmath.dtx}
+\end{document}
+%</driver>
+%
+% \fi
+%
+%
+% \title{The \texttt{latex-lab-mathtools} code\thanks{}}
+% \author{\LaTeX{} Project}
+%
+% \maketitle
+%
+% \newcommand\fmi[1]{\begin{quote} TODO: \itshape #1\end{quote}}
+% \newcommand\NEW[1]{\marginpar{\mbox{}\hfill\fbox{New: #1}}}
+% \providecommand\class[1]{\texttt{#1.cls}}
+% \providecommand\pkg[1]{\texttt{#1}}
+% \providecommand\hook[1]{\texttt{#1}}
+%
+% \begin{abstract}
+% \end{abstract}
+%
+% \tableofcontents
+%
+% \section{Introduction}
+%
+% This file implements adaptions to the \pkg{mathtools} package needed for
+% the tagging project.
+%
+% \MaybeStop{\setlength\IndexMin{200pt} \PrintIndex }
+%
+% \section{The Implementation}
+%
+% \begin{macrocode}
+%<@@=math>
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<*kernel>
+% \end{macrocode}
+%
+% \subsection{File declaration}
+% \begin{macrocode}
+\ProvidesFile{latex-lab-mathtools.ltx}
+ [2023-01-05 v0.1a mathtools adaptions]
+% \end{macrocode}
+% \subsection{Tagpdf support}
+% To make the code independent from tagging being loaded and active
+% we load the \pkg{tagpdf-base} package:
+%
+% \begin{macrocode}
+\RequirePackage{tagpdf-base}
+% \end{macrocode}
+%
+% \subsection{\cs{shortintertext}}
+% Similar to the \cs{intertext} command from amsmath,
+% \cs{shortintertext} errors with active tagging as it is processed twice
+% which leads to duplicated structures.
+% The fix is similar but is complicated as \pkg{mathtools} defines two version (and
+% an additional \cs{intertext} version) and package options to switch between the variants.
+%
+% At first we redefine all the internal commands
+% \begin{macrocode}
+\ExplSyntaxOn
+\tl_new:N\l_@@_mathtools_init_tl
+\AddToHook{package/mathtools/after}
+ {%
+ \cs_if_eq:NNTF\intertext@ \MT_intertext:
+ {
+ \tl_set:Nn \l_@@_mathtools_init_tl {\MT_orig_intertext_false:}
+ }
+ {
+ \tl_set:Nn \l_@@_mathtools_init_tl {\MT_orig_intertext_true:}
+ }
+ \cs_if_eq:NNTF\shortintertext@ \MT_shortintertext:n
+ {
+ \tl_put_right:Nn \l_@@_mathtools_init_tl
+ {\MT_orig_shortintertext_false:}
+ }
+ {
+ \tl_put_right:Nn \l_@@_mathtools_init_tl
+ {\MT_orig_shortintertext_true:}
+ }
+ \def\MT_intertext: {%
+ \def\intertext##1{%
+ \ifvmode\else\\\@empty\fi
+ \noalign{%
+ \penalty\postdisplaypenalty\vskip\belowdisplayskip
+ \vskip-\lineskiplimit % CCS
+ \vskip\normallineskiplimit % CCS
+ \vskip\l_MT_above_intertext_sep
+ \vbox{%
+% \end{macrocode}
+% Stop tagging when measuring:
+% \begin{macrocode}
+ \ifmeasuring@\tag_stop:\fi
+ \normalbaselines
+ \ifdim
+ \ifdim\@totalleftmargin=\z@
+ \linewidth
+ \else
+ -\maxdimen
+ \fi
+ =\columnwidth
+ \else \parshape\@ne \@totalleftmargin \linewidth
+ \fi
+% \end{macrocode}
+% End the previous mc:
+% \begin{macrocode}
+ \tag_mc_end_push:
+% \end{macrocode}
+% We are already in a par so we change now to Span:
+% \begin{macrocode}
+ \tagpdfsetup{paratag=Span}
+ \noindent\ignorespaces##1\par
+% \end{macrocode}
+% Restart the MC
+% \begin{macrocode}
+ \tag_mc_begin_pop:n{}}%
+ \penalty\predisplaypenalty\vskip\abovedisplayskip%
+ \vskip-\lineskiplimit % CCS
+ \vskip\normallineskiplimit % CCS
+ \vskip\l_MT_below_intertext_sep
+ }%
+ }%
+ \MH_let:NwN \shortintertext \shortintertext@
+ }
+% \end{macrocode}
+% \begin{macrocode}
+ \def\MT_orig_shortintertext:n #1{%
+ \ifvmode\else\\\@empty\fi
+ \noalign{%
+ \penalty\postdisplaypenalty\vskip\abovedisplayshortskip
+ \vbox{%
+ \ifmeasuring@\tag_stop:\fi
+ \normalbaselines
+ \MH_if_dim:w
+ \MH_if_dim:w \@totalleftmargin=\z@
+ \linewidth
+ \MH_else:
+ -\maxdimen
+ \MH_fi:
+ =\columnwidth
+ \MH_else:
+ \parshape\@ne \@totalleftmargin \linewidth
+ \MH_fi:
+ \tag_mc_end_push:
+ \tagpdfsetup{paratag=Span}
+ \noindent\ignorespaces#1\par
+ \tag_mc_begin_pop:n{}}
+ \penalty\predisplaypenalty\vskip\abovedisplayshortskip%
+ }%
+ }
+
+ \def\MT_shortintertext:n #1{%
+ \ifvmode\else\\\@empty\fi
+ \noalign{%
+ \penalty\postdisplaypenalty\vskip\abovedisplayshortskip
+ \vskip-\lineskiplimit
+ \vskip\normallineskiplimit
+ \vskip\l_MT_above_shortintertext_sep
+ \vbox{%
+ \ifmeasuring@\tag_stop:\fi
+ \normalbaselines
+ \MH_if_dim:w
+ \MH_if_dim:w \@totalleftmargin=\z@
+ \linewidth
+ \MH_else:
+ -\maxdimen
+ \MH_fi:
+ =\columnwidth
+ \MH_else:
+ \parshape\@ne \@totalleftmargin \linewidth
+ \MH_fi:
+ \tag_mc_end_push:
+ \tagpdfsetup{paratag=Span}
+ \noindent\ignorespaces#1\par
+ \tag_mc_begin_pop:n{}}%
+ \penalty\predisplaypenalty\vskip\abovedisplayshortskip%
+ \vskip-\lineskiplimit
+ \vskip\normallineskiplimit
+ \vskip\l_MT_below_shortintertext_sep
+ }%
+ }
+
+% \end{macrocode}
+% end hook
+% \begin{macrocode}
+ \l_@@_mathtools_init_tl
+}
+\ExplSyntaxOff
+% \end{macrocode}
+%
+% \begin{macrocode}
+%</kernel>
+% \end{macrocode}
+%
+% \Finale
+%