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-rw-r--r--Master/texmf-dist/source/latex/base/ltmiscen.dtx510
1 files changed, 422 insertions, 88 deletions
diff --git a/Master/texmf-dist/source/latex/base/ltmiscen.dtx b/Master/texmf-dist/source/latex/base/ltmiscen.dtx
index 97b1f4a572b..0c115d3be1b 100644
--- a/Master/texmf-dist/source/latex/base/ltmiscen.dtx
+++ b/Master/texmf-dist/source/latex/base/ltmiscen.dtx
@@ -32,7 +32,7 @@
%<*driver>
% \fi
\ProvidesFile{ltmiscen.dtx}
- [2019/11/02 v1.1s LaTeX Kernel (Misc. Environments)]
+ [2020/08/21 v1.1v LaTeX Kernel (Misc. Environments)]
% \iffalse
\documentclass{ltxdoc}
\GetFileInfo{ltmiscen.dtx}
@@ -73,6 +73,7 @@
% \cs{@noligs}.}
% \changes{v1.1g}{1998/08/17}{(RmS) Minor documentation fixes.}
% \changes{v1.1p}{2019/08/27}{Make various commands robust}
+% \changes{v1.1v}{2020/08/21}{Integration of new hook management interface}
%
% \section{Miscellaneous Environments}
% This section implements the basic environment mechanism, and also
@@ -182,6 +183,7 @@
% \end{macrocode}
% \end{macro}
%
+% \begin{environment}{document}
% \begin{macro}{\enddocument}
% \changes{LaTeX2.09}{1993/08/03}
% {Changed redefinition of \cs{global} to redefinition
@@ -190,6 +192,10 @@
% {Added warning in case of undefined references.}%
% \changes{v0.9e}{1993/12/09}{Hook added}
% \begin{macrocode}
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2020/10/01}%
+%<latexrelease> {\enddocument}{Use Hooks}%
\def\enddocument{%
% \end{macrocode}
% The |\end{document}| hook is executed first. If necessary it can
@@ -208,10 +214,15 @@
% \changes{v1.1i}{2000/05/19}
% {Reset \cs{AtEndDocument} for latex/3060}
% \begin{macrocode}
- \let\AtEndDocument\@firstofone
- \@enddocumenthook
+ \UseOneTimeHook{enddocument}%
+ \@kernel@after@enddocument
+% \end{macrocode}
+%
+% \begin{macrocode}
\@checkend{document}%
\clearpage
+ \UseOneTimeHook{enddocument/afterlastpage}%
+ \@kernel@after@enddocument@afterlastpage
\begingroup
\if@filesw
\immediate\closeout\@mainaux
@@ -234,11 +245,52 @@
\@tempswafalse
\makeatletter \@@input\jobname.aux
\fi
+ \UseHook{enddocument/afteraux}%
% \end{macrocode}
-% \changes{v1.0w}{1994/11/30}
-% {(DPC) Use \cs{@dofilelist}}
+% Next hook is expect to contain only code for writing info
+% messages on the terminal.
+% \begin{macrocode}
+ \UseOneTimeHook{enddocument/info}%
+ \endgroup
+ \UseOneTimeHook{enddocument/end}%
+ \deadcycles\z@\@@end}
+% \end{macrocode}
+%
+% The public hooks used in \cs{enddocument}:
+% \begin{macrocode}
+\NewHook{enddocument}
+\NewHook{enddocument/afterlastpage}
+\NewHook{enddocument/afteraux}
+\NewHook{enddocument/info}
+\NewHook{enddocument/end}
+% \end{macrocode}
+%
+% This is one of the few places where we already add data and rules
+% to a hook already in the kernel.
+% \changes{v1.0w}{1994/11/30}{(DPC) Use \cs{@dofilelist}}
+% \begin{macrocode}
+\AddToHook{enddocument/info}[kernel/filelist]{\@dofilelist}
+\AddToHook{enddocument/info}[kernel/warnings]{\@enddocument@kernel@warnings}
+\DeclareHookRule{enddocument/info}{kernel/filelist}{before}{kernel/warnings}
+% \end{macrocode}
+% \end{macro}
+% \end{environment}
+%
+%
+% \begin{macro}{\@kernel@after@enddocument,
+% \@kernel@after@enddocument@afterlastpage}
+%
+% The two kernel hooks above are used by the shipout code.
+% \begin{macrocode}
+\let\@kernel@after@enddocument\@empty
+\let\@kernel@after@enddocument@afterlastpage\@empty
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@enddocument@kernel@warnings}
+%
% \begin{macrocode}
- \@dofilelist
+\def\@enddocument@kernel@warnings{%
% \end{macrocode}
% First we check for font size substitution bigger than
% |\fontsubfuzz|. The |\relax| is necessary because this is a macro
@@ -246,29 +298,29 @@
% \changes{v1.0w}{1994/11/30}
% {(DPC) Do warnings even for \cs{nofiles}}
% \begin{macrocode}
- \ifdim \font@submax >\fontsubfuzz\relax
+ \ifdim \font@submax >\fontsubfuzz\relax
% \end{macrocode}
% In case you wonder about the |\@gobbletwo| inside the message
% below, this is a horrible hack to remove the tokens |\on@line.|
% that are added by |\@font@warning| at the end.
% \changes{v1.1j}{2000/07/11}{Fix typo in warning}
% \begin{macrocode}
- \@font@warning{Size substitutions with differences\MessageBreak
- up to \font@submax\space have occurred.\@gobbletwo}%
- \fi
+ \@font@warning{Size substitutions with differences\MessageBreak
+ up to \font@submax\space have occurred.\@gobbletwo}%
+ \fi
% \end{macrocode}
% The macro |\@defaultsubs| is initially |\relax| but gets redefined
% to produce
% a warning if there have been some default font substitutions.
% \changes{v1.0z}{1995/07/13}{Use \cs{@defaultsubs} instead of switch}
% \begin{macrocode}
- \@defaultsubs
+ \@defaultsubs
% \end{macrocode}
% The macro |\@refundefined| is initially |\relax| but gets redefined
% to produce a warning if there are undefined refs.
% \changes{v1.1b}{1995/10/24}{Use \cs{@refundefined} instead of switch}
% \begin{macrocode}
- \@refundefined
+ \@refundefined
% \end{macrocode}
% If a label is defined more than once, |\@tempswa| will always be
% true and thus produce a ``Label(s) may \ldots'' warning. But
@@ -280,21 +332,78 @@
% \changes{v1.1b}{1995/10/24}{Changed logic for producing
% warning messages and removed switch}
% \begin{macrocode}
- \if@filesw
- \ifx \@multiplelabels \relax
- \if@tempswa
- \@latex@warning@no@line{Label(s) may have changed.
- Rerun to get cross-references right}%
- \fi
- \else
- \@multiplelabels
+ \if@filesw
+ \ifx \@multiplelabels \relax
+ \if@tempswa
+ \@latex@warning@no@line{Label(s) may have changed.
+ Rerun to get cross-references right}%
\fi
+ \else
+ \@multiplelabels
+ \fi
+ \ifx \@extra@page@added \relax
+ \@latex@warning@no@line{Temporary extra page added at the end.
+ Rerun to get it removed}%
\fi
- \endgroup
- \deadcycles\z@\@@end}
+% \end{macrocode}
+% We could think of adding a warning that nothing can be corrected
+% while \cs{nofiles} is in force. In the past the warnings related
+% to the \texttt{aux} file are simply suppressed in this case.
+% \begin{macrocode}
+ \fi
+}
% \end{macrocode}
% \end{macro}
%
+% \begin{macrocode}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\enddocument}{Use Hooks}%
+%<latexrelease>
+%<latexrelease>\def\enddocument{%
+%<latexrelease> \let\AtEndDocument\@firstofone
+%<latexrelease> \@enddocumenthook
+%<latexrelease> \@checkend{document}%
+%<latexrelease> \clearpage
+%<latexrelease> \begingroup
+%<latexrelease> \if@filesw
+%<latexrelease> \immediate\closeout\@mainaux
+%<latexrelease> \let\@setckpt\@gobbletwo
+%<latexrelease> \let\@newl@bel\@testdef
+%<latexrelease> \@tempswafalse
+%<latexrelease> \makeatletter \@@input\jobname.aux
+%<latexrelease> \fi
+%<latexrelease> \@dofilelist
+%<latexrelease> \ifdim \font@submax >\fontsubfuzz\relax
+%<latexrelease> \@font@warning{Size substitutions with differences\MessageBreak
+%<latexrelease> up to \font@submax\space have occurred.\@gobbletwo}%
+%<latexrelease> \fi
+%<latexrelease> \@defaultsubs
+%<latexrelease> \@refundefined
+%<latexrelease> \if@filesw
+%<latexrelease> \ifx \@multiplelabels \relax
+%<latexrelease> \if@tempswa
+%<latexrelease> \@latex@warning@no@line{Label(s) may have changed.
+%<latexrelease> Rerun to get cross-references right}%
+%<latexrelease> \fi
+%<latexrelease> \else
+%<latexrelease> \@multiplelabels
+%<latexrelease> \fi
+%<latexrelease> \fi
+%<latexrelease> \endgroup
+%<latexrelease> \deadcycles\z@\@@end}
+%<latexrelease>
+%<latexrelease>\let\@kernel@after@enddocument\@undefined
+%<latexrelease>\let\@kernel@after@enddocument@afterlastpage\@undefined
+%<latexrelease>\let\@enddocument@kernel@warnings\@undefined
+%<latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
+% \end{macrocode}
+%
+%
+%
% \begin{macro}{\@testdef}
% \begin{macrocode}
\def\@testdef #1#2#3{%
@@ -523,17 +632,107 @@
% \begin{macrocode}
%</2ekernel>
%<*2ekernel|latexrelease>
-%<latexrelease>\IncludeInRelease{2019/10/01}%
-%<latexrelease> {\begin}{Making \begin/\end robust}%
-\DeclareRobustCommand\begin[1]{%
+%<latexrelease>\IncludeInRelease{2020/10/01}%
+%<latexrelease> {\begin}{Use hook system}%
+\DeclareRobustCommand*\begin[1]{%
+ \UseHook{env/#1/before}%
\@ifundefined{#1}%
{\def\reserved@a{\@latex@error{Environment #1 undefined}\@eha}}%
{\def\reserved@a{\def\@currenvir{#1}%
- \edef\@currenvline{\on@line}%
- \csname #1\endcsname}}%
+ \edef\@currenvline{\on@line}%
+ \@execute@begin@hook{#1}%
+ \csname #1\endcsname}}%
\@ignorefalse
\begingroup\@endpefalse\reserved@a}
% \end{macrocode}
+%
+% Before the \cs{document} code is executed we have to first undo
+% the \cs{endgroup} as there should be none for this environment to
+% avoid that changes on top-level unnecessarily go to \TeX's
+% savestack, and we have to initialize all hooks in the hook system.
+% So we need to test for this environment name. But once it has be
+% found all this testing is no longer needed and so we redefine
+% \cs{@execute@begin@hook} to simply use the hook.
+% \begin{macrocode}
+\def\@execute@begin@hook #1{%
+ \expandafter\ifx\csname #1\endcsname\document
+ \endgroup
+ \gdef\@execute@begin@hook##1{\UseHook{env/##1/begin}}%
+ \@expl@@@initialize@all@@
+ \fi
+% \end{macrocode}
+% If this is an environment before \verb=\begin{document}= we just
+% run the hook so this can be outside the test.
+% \begin{macrocode}
+ \UseHook{env/#1/begin}%
+}
+% \end{macrocode}
+%
+% The top level definition for \cs{end}. for an explanation see
+% below (this is the same as the 2019 version where it was
+% introduced, but for rollback we have to repeat it).
+% \begin{macrocode}
+\edef\end
+ {\unexpanded{%
+ \romannumeral
+ \ifx\protect\@typeset@protect
+ \expandafter %1
+ \expandafter %2
+ \expandafter %1
+ \expandafter %3 expands the \csname inside \end<space>
+ \expandafter %1
+ \expandafter %2 expands \end<space>
+ \expandafter %1 expands the \else
+ \z@
+ \else
+ \expandafter\z@\expandafter\protect
+ \fi
+ }%
+ \expandafter\noexpand\csname end \endcsname
+ }
+% \end{macrocode}
+% Version that adds hooks (so different from the 2019 version). It
+% fixes tlb3722 but the change should perhaps be made in
+% \texttt{tabularx} instead.
+% \begin{macrocode}
+\@namedef{end }#1{%
+ \romannumeral
+ \IfHookEmptyTF{env/#1/end}%
+ {\expandafter\z@}%
+ {\z@\UseHook{env/#1/end}}%
+ \csname end#1\endcsname\@checkend{#1}%
+ \expandafter\endgroup\if@endpe\@doendpe\fi
+ \UseHook{env/#1/after}%
+ \if@ignore\@ignorefalse\ignorespaces\fi
+}
+% \end{macrocode}
+% Version without the fix for tlb3722 for the record:
+% \begin{macrocode}
+%\@namedef{end }#1{%
+% \UseHook{env/#1/end}%
+% \csname end#1\endcsname\@checkend{#1}%
+% \expandafter\endgroup\if@endpe\@doendpe\fi
+% \UseHook{env/#1/after}%
+% \if@ignore\@ignorefalse\ignorespaces\fi}%
+% \end{macrocode}
+%
+% \begin{macrocode}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<latexrelease>\IncludeInRelease{2019/10/01}%
+%<latexrelease> {\begin}{Making \begin/\end robust}%
+%<latexrelease>\DeclareRobustCommand\begin[1]{%
+%<latexrelease> \@ifundefined{#1}%
+%<latexrelease> {\def\reserved@a{\@latex@error{Environment #1 undefined}\@eha}}%
+%<latexrelease> {\def\reserved@a{\def\@currenvir{#1}%
+%<latexrelease> \edef\@currenvline{\on@line}%
+%<latexrelease> \csname #1\endcsname}}%
+%<latexrelease> \@ignorefalse
+%<latexrelease> \begingroup\@endpefalse\reserved@a}
+% \end{macrocode}
% A version that doesn't start out with \cs{relax} when in
% typesetting mode would be the following, but since \cs{begin}
% issues a \cs{begingroup} it wouldn't help much with respect to
@@ -606,41 +805,50 @@
% \changes{v1.1p}{2019/08/27}{Make command robust}
%
% \begin{macrocode}
-\edef\end
- {\unexpanded{%
- \romannumeral
- \ifx\protect\@typeset@protect
- \expandafter %1
- \expandafter %2
- \expandafter %1
- \expandafter %3 expands the \csname inside \end<space>
- \expandafter %1
- \expandafter %2 expands \end<space>
- \expandafter %1 expands the \else
- \z@
- \else
- \expandafter\z@\expandafter\protect
- \fi
- }%
- \expandafter\noexpand\csname end \endcsname
- }
+%<latexrelease>\edef\end
+%<latexrelease> {\unexpanded{%
+%<latexrelease> \romannumeral
+%<latexrelease> \ifx\protect\@typeset@protect
+%<latexrelease> \expandafter %1
+%<latexrelease> \expandafter %2
+%<latexrelease> \expandafter %1
+%<latexrelease> \expandafter %3 expands the \csname inside \end<space>
+%<latexrelease> \expandafter %1
+%<latexrelease> \expandafter %2 expands \end<space>
+%<latexrelease> \expandafter %1 expands the \else
+%<latexrelease> \z@
+%<latexrelease> \else
+%<latexrelease> \expandafter\z@\expandafter\protect
+%<latexrelease> \fi
+%<latexrelease> }%
+%<latexrelease> \expandafter\noexpand\csname end \endcsname
+%<latexrelease> }
% \end{macrocode}
% And here is the original definition of \cs{end} the way it was in
% \LaTeX{} for several decades now hidden in \verb*=\end =.
% \begin{macrocode}
-\@namedef{end }#1{%
- \csname end#1\endcsname\@checkend{#1}%
- \expandafter\endgroup\if@endpe\@doendpe\fi
- \if@ignore\@ignorefalse\ignorespaces\fi}
-%</2ekernel|latexrelease>
+%<latexrelease>\@namedef{end }#1{%
+%<latexrelease> \csname end#1\endcsname\@checkend{#1}%
+%<latexrelease> \expandafter\endgroup\if@endpe\@doendpe\fi
+%<latexrelease> \if@ignore\@ignorefalse\ignorespaces\fi}
%<latexrelease>\EndIncludeInRelease
% \end{macrocode}
% An here the rollback in case that is ever needed.
% \begin{macrocode}
%<latexrelease>\IncludeInRelease{0000/00/00}%
%<latexrelease> {\begin}{Making \begin/\end robust}%
-%<latexrelease>\kernel@make@fragile\begin
-%<latexrelease>\kernel@make@fragile\end
+%<latexrelease>\def\begin#1{%
+%<latexrelease> \@ifundefined{#1}%
+%<latexrelease> {\def\reserved@a{\@latex@error{Environment #1 undefined}\@eha}}%
+%<latexrelease> {\def\reserved@a{\def\@currenvir{#1}%
+%<latexrelease> \edef\@currenvline{\on@line}%
+%<latexrelease> \csname #1\endcsname}}%
+%<latexrelease> \@ignorefalse
+%<latexrelease> \begingroup\@endpefalse\reserved@a}
+%<latexrelease>\def\end#1{%
+%<latexrelease> \csname end#1\endcsname\@checkend{#1}%
+%<latexrelease> \expandafter\endgroup\if@endpe\@doendpe\fi
+%<latexrelease> \if@ignore\@ignorefalse\ignorespaces\fi}
%<latexrelease>
%<latexrelease>\EndIncludeInRelease
%<*2ekernel>
@@ -672,6 +880,47 @@
% \end{macro}
%
%
+%
+% \begin{macro}{\AtBeginEnvironment,\AtEndEnvironment,
+% \BeforeBeginEnvironment,\AfterEndEnvironment}
+%
+% We provide 4 high-level hook interfaces directly, the others only when
+% etoolbox is loaded
+% \begin{macrocode}
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2020/10/01}%
+%<latexrelease> {\AtBeginEnvironment}{Hooks for environments}%
+% \end{macrocode}
+%
+% \begin{macrocode}
+\newcommand\AtBeginEnvironment[2][.] {\AddToHook{env/#2/begin}[#1]}
+\newcommand\AtEndEnvironment[2][.] {\AddToHook{env/#2/end}[#1]}
+\newcommand\BeforeBeginEnvironment[2][.]{\AddToHook{env/#2/before}[#1]}
+\newcommand\AfterEndEnvironment[2][.] {\AddToHook{env/#2/after}[#1]}
+% \end{macrocode}
+%
+% \begin{macrocode}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\AtBeginEnvironment}{Hooks for environments}%
+%<latexrelease>
+%<latexrelease>\let\AtBeginEnvironment\@undefined
+%<latexrelease>\let\AtEndEnvironment\@undefined
+%<latexrelease>\let\BeforeBeginEnvironment\@undefined
+%<latexrelease>\let\AfterEndEnvironment\@undefined
+%<latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
+% \end{macrocode}
+% \end{macro}
+%
+%
+%
% \subsection{Center, Flushright, Flushleft}
%
% \begin{macrocode}
@@ -738,10 +987,25 @@
% \end{macro}
%
% \begin{macro}{\@icentercr}
+% \changes{v1.1t}{2020/04/21}{Support calc syntax (gh/152)}
% \begin{macrocode}
-\def\@icentercr[#1]{\vskip #1\ignorespaces}
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2020/10/01}%
+%<latexrelease> {\@icentercr}{centering, etc support calc}%
+\def\@icentercr[#1]{\@vspace@calcify{#1}\ignorespaces}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\@icentercr}{centering, etc support calc}%
+%<latexrelease>
+%<latexrelease>\def\@icentercr[#1]{\vskip #1\ignorespaces}
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
% \end{macrocode}
-%
% \end{macro}
%
%
@@ -763,33 +1027,39 @@
% \begin{macrocode}
%</2ekernel>
%<*2ekernel|latexrelease>
-%<latexrelease>\IncludeInRelease{2019/10/01}%
-%<latexrelease> {\centering}{Make commands robust}%
+%<latexrelease>\IncludeInRelease{2020/10/01}%
+%<latexrelease> {\centering}{Set finaldhypendemerits}%
% \end{macrocode}
%
% \begin{macro}{\centering}
+% \changes{v1.1u}{2020/05/31}{Added \cs{finalhyphendemerits} setting (gh/247)}
% \begin{macrocode}
\DeclareRobustCommand\centering{%
\let\\\@centercr
\rightskip\@flushglue\leftskip\@flushglue
+ \finalhyphendemerits=\z@
\parindent\z@\parfillskip\z@skip}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\raggedright}
+% \changes{v1.1u}{2020/05/31}{Added \cs{finalhyphendemerits} setting (gh/247)}
% \begin{macrocode}
\DeclareRobustCommand\raggedright{%
\let\\\@centercr\@rightskip\@flushglue \rightskip\@rightskip
+ \finalhyphendemerits=\z@
\leftskip\z@skip
\parindent\z@}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\raggedleft}
+% \changes{v1.1u}{2020/05/31}{Added \cs{finalhyphendemerits} setting (gh/247)}
% \begin{macrocode}
\DeclareRobustCommand\raggedleft{%
\let\\\@centercr
\rightskip\z@skip\leftskip\@flushglue
+ \finalhyphendemerits=\z@
\parindent\z@\parfillskip\z@skip}
% \end{macrocode}
% \end{macro}
@@ -797,6 +1067,23 @@
% \begin{macrocode}
%</2ekernel|latexrelease>
%<latexrelease>\EndIncludeInRelease
+%<latexrelease>\IncludeInRelease{2019/10/01}%
+%<latexrelease> {\centering}{Make commands robust}%
+%<latexrelease>
+%<latexrelease>\DeclareRobustCommand\centering{%
+%<latexrelease> \let\\\@centercr
+%<latexrelease> \rightskip\@flushglue\leftskip\@flushglue
+%<latexrelease> \parindent\z@\parfillskip\z@skip}
+%<latexrelease>\DeclareRobustCommand\raggedright{%
+%<latexrelease> \let\\\@centercr\@rightskip\@flushglue \rightskip\@rightskip
+%<latexrelease> \leftskip\z@skip
+%<latexrelease> \parindent\z@}
+%<latexrelease>\DeclareRobustCommand\raggedleft{%
+%<latexrelease> \let\\\@centercr
+%<latexrelease> \rightskip\z@skip\leftskip\@flushglue
+%<latexrelease> \parindent\z@\parfillskip\z@skip}
+%<latexrelease>\EndIncludeInRelease
+%<latexrelease>
%<latexrelease>\IncludeInRelease{0000/00/00}%
%<latexrelease> {\centering}{Make commands robust}%
%<latexrelease>
@@ -983,6 +1270,7 @@
% \end{macrocode}
% \end{macro}
%
+% \begin{environment}{verbatim}
% \begin{macro}{\verbatim}
% \begin{macro}{\endverbatim}
% (RmS 93/09/19) Protected against `missing item' error message
@@ -993,6 +1281,7 @@
% \end{macrocode}
% \end{macro}
% \end{macro}
+% \end{environment}
%
% \begin{macro}{\verbatim@font}
% \changes{v0.9a}{1993/11/21}{Macro added}
@@ -1010,7 +1299,7 @@
%</2ekernel>
%<*2ekernel|latexrelease>
%<latexrelease>\IncludeInRelease{2018/12/01}%
-%<latexrelease> {\verbvisiblespace}{Setup visible space for verb}%
+%<latexrelease> {\verbvisiblespace}{Setup visible space for \verb}%
% \end{macrocode}
%
%
@@ -1092,15 +1381,71 @@
% \end{macrocode}
% \end{macro}
%
+%^^A \@sverb was here
+%
+% \begin{environment}{verbatim*}
+% For \texttt{verbatim*} we also set up the correct visible space
+% character definition and then run |\@vobeyspaces|. As this code
+% is not called as part of the normal verbatim environment (the
+% method is done the other way around this time) we don't have to
+% check if space is already active---it shouldn't be.
+% \changes{v1.1o}{2018/10/11}
+% {Provide visible space in \cs{verb*} also for XeTeX and LuaTeX (github/69)}
+% \begin{macrocode}
+\@namedef{verbatim*}{\@verbatim
+ \@setupverbvisiblespace
+ \frenchspacing\@vobeyspaces\@sxverbatim}
+\expandafter\let\csname endverbatim*\endcsname =\endverbatim
+% \end{macrocode}
+% \end{environment}
+%
+%
+%
+% \begin{macrocode}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\verbvisiblespace}{Setup visible space for \verb}%
+%<latexrelease>
+%<latexrelease>\@namedef{verbatim*}{\@verbatim\@sxverbatim}
+%<latexrelease>
+%<latexrelease>\let\asciispace \@undefined
+%<latexrelease>\let\verbvisiblespace \@undefined
+%<latexrelease>\let\@setupverbvisiblespace\@undefined
+%<latexrelease>\let\@verbvisiblespacebox \@undefined
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
+% \end{macrocode}
+%
+%
%
% \begin{macro}{\@sverb}
+% \begin{macro}{\@@sverb}
% \changes{v1.0j}{1994/05/10}{Slight change in error message text.}
% Definitions of |\@sverb| and |\@verb| changed so |\verb+ foo+|
% does not lose leading blanks when it comes at the beginning of a line.
% Change made 24 May 89. Suggested by Frank Mittelbach and Rainer
% Sch\"opf.
% \begin{macrocode}
-\def\@sverb#1{%
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2020/10/01}%
+%<latexrelease> {\@sverb}{Drop spaces before \verb delimiter}%
+% \end{macrocode}
+%
+% If the users types \verb=\verb !~! foo= then surprisingly we would
+% get the space as the delimiter and thus
+% ``\verb=!~!foo='' in the output.
+% To avoid this scenario we check if \verb=#1= has the character
+% code of a space, if so we recurse otherwise we call \cs{@@sverb}
+% (which is the original definition of \cs{@sverb}.
+% \changes{v1.1u}{2020/04/22}{Drop spaces before \cs{verb} delimiter (gh/327)}
+% \begin{macrocode}
+\def\@sverb#1{\if\noexpand#1 \expandafter\@sverb\else\@@sverb{#1}\fi}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\def\@@sverb#1{%
\catcode`#1\active
\lccode`\~`#1%
\gdef\verb@balance@group{\verb@egroup
@@ -1120,39 +1465,28 @@
\else \@setupverbvisiblespace \@vobeyspaces \fi
}
% \end{macrocode}
-% \end{macro}
-%
-% \begin{environment}{verbatim*}
-% For \texttt{verbatim*} we also set up the correct visible space
-% character definition and then run |\@vobeyspaces|. As this code
-% is not called as part of the normal verbatim environment (the
-% method is done the other way around this time) we don't have to
-% check if space is already active---it shouldn't be.
-% \changes{v1.1o}{2018/10/11}
-% {Provide visible space in \cs{verb*} also for XeTeX and LuaTeX (github/69)}
-% \begin{macrocode}
-\@namedef{verbatim*}{\@verbatim
- \@setupverbvisiblespace
- \frenchspacing\@vobeyspaces\@sxverbatim}
-\expandafter\let\csname endverbatim*\endcsname =\endverbatim
-% \end{macrocode}
-% \end{environment}
-%
-%
-%
+%
% \begin{macrocode}
%</2ekernel|latexrelease>
%<latexrelease>\EndIncludeInRelease
-%<latexrelease>\IncludeInRelease{0000/00/00}%
-%<latexrelease> {\verbvisiblespace}{Setup visible space for verb}%
-%<latexrelease>
-%<latexrelease>\@namedef{verbatim*}{\@verbatim\@sxverbatim}
+%<latexrelease>\IncludeInRelease{2018/12/01}%
+%<latexrelease> {\@sverb}{Setup visible space for \verb}%
%<latexrelease>
-%<latexrelease>\let\asciispace \@undefined
-%<latexrelease>\let\verbvisiblespace \@undefined
-%<latexrelease>\let\@setupverbvisiblespace\@undefined
-%<latexrelease>\let\@verbvisiblespacebox \@undefined
+%<latexrelease>\def\@sverb#1{%
+%<latexrelease> \catcode`#1\active
+%<latexrelease> \lccode`\~`#1%
+%<latexrelease> \gdef\verb@balance@group{\verb@egroup
+%<latexrelease> \@latex@error{\noexpand\verb illegal in command argument}\@ehc}%
+%<latexrelease> \aftergroup\verb@balance@group
+%<latexrelease> \lowercase{\let~\verb@egroup}%
+%<latexrelease> \ifnum\catcode`\ =\active
+%<latexrelease> \else \@setupverbvisiblespace \@vobeyspaces \fi
+%<latexrelease>}
+%<latexrelease>\let\@@sverb\@undefined
+%<latexrelease>\EndIncludeInRelease
%<latexrelease>
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\@sverb}{Setup visible space for \verb}%
%<latexrelease>\def\@sverb#1{%
%<latexrelease> \catcode`#1\active
%<latexrelease> \lccode`\~`#1%
@@ -1164,8 +1498,8 @@
%<latexrelease>\EndIncludeInRelease
%<*2ekernel>
% \end{macrocode}
-%
-%
+% \end{macro}
+% \end{macro}
%
%
% \begin{macro}{\@makeother}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 13:38:43 +0000