summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/source/latex-dev
diff options
context:
space:
mode:
authorKarl Berry <karl@freefriends.org>2021-02-27 21:53:07 +0000
committerKarl Berry <karl@freefriends.org>2021-02-27 21:53:07 +0000
commit3aeabb285aafc636e2ce6657efe30fa08145072d (patch)
tree619045befb3794f7d490b90a26ca6f333b9ffd05 /Master/texmf-dist/source/latex-dev
parentf4e4089505eb2d3b2b3c7e7576f777981c6b8622 (diff)
latex-dev (27feb21)
git-svn-id: svn://tug.org/texlive/trunk@57982 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/source/latex-dev')
-rw-r--r--Master/texmf-dist/source/latex-dev/base/alltt.dtx23
-rw-r--r--Master/texmf-dist/source/latex-dev/base/alltt.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/classes.dtx26
-rw-r--r--Master/texmf-dist/source/latex-dev/base/classes.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/cmextra.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/cmfonts.fdd2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/cmfonts.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/doc.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/docstrip.dtx6
-rw-r--r--Master/texmf-dist/source/latex-dev/base/docstrip.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ec.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/exscale.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/exscale.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/fix-cm.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/fix-cm.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/fontdef.dtx6
-rw-r--r--Master/texmf-dist/source/latex-dev/base/format.ins15
-rw-r--r--Master/texmf-dist/source/latex-dev/base/graphpap.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/graphpap.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ifthen.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ifthen.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/inputenc.dtx6
-rw-r--r--Master/texmf-dist/source/latex-dev/base/inputenc.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/latex209.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/latex209.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/latexrelease.dtx27
-rw-r--r--Master/texmf-dist/source/latex-dev/base/latexrelease.ins5
-rw-r--r--Master/texmf-dist/source/latex-dev/base/latexsym.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/latexsym.ins6
-rw-r--r--Master/texmf-dist/source/latex-dev/base/letter.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/letter.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltalloc.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltbibl.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltboxes.dtx112
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltclass.dtx148
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltcmd.dtx4041
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltcntrl.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltcounts.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltdefns.dtx6
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltdirchk.dtx12
-rw-r--r--Master/texmf-dist/source/latex-dev/base/lterror.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltexpl.dtx68
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltfilehook.dtx73
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltfiles.dtx18
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltfinal.dtx56
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltfloat.dtx106
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltfntcmd.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltfssaxes.dtx10
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltfssbas.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltfsscmp.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltfssdcl.dtx14
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltfssini.dtx36
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltfsstrc.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/lthooks.dtx31
-rw-r--r--Master/texmf-dist/source/latex-dev/base/lthyphen.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltidxglo.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltlength.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltlists.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltlogos.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltluatex.dtx12
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltmath.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltmiscen.dtx13
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltoutenc.dtx89
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltoutenc.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltoutput.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltpage.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltpageno.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltpar.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltpara.dtx1159
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltpictur.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltplain.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltsect.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltshipout.dtx608
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltspace.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/lttab.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/lttextcomp.dtx458
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltthm.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltvers.dtx30
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltxdoc.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/ltxref.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/makeindx.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/makeindx.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/newdc.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/newlfont.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/nfssfont.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/nfssfont.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/olddc.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/oldlfont.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/preload.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/proc.dtx6
-rw-r--r--Master/texmf-dist/source/latex-dev/base/proc.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/slides.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/slides.ins8
-rw-r--r--Master/texmf-dist/source/latex-dev/base/slifonts.fdd4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/syntonly.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/syntonly.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/tulm.fdd6
-rw-r--r--Master/texmf-dist/source/latex-dev/base/tulm.ins4
-rw-r--r--Master/texmf-dist/source/latex-dev/base/unpack.ins2
-rw-r--r--Master/texmf-dist/source/latex-dev/base/utf8ienc.dtx18
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/afterpage.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/afterpage.ins8
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/array.dtx61
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/bm.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/bm.ins8
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/calc.dtx6
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/dcolumn.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/delarray.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/enumerate.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/fileerr.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/fontsmpl.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/ftnright.dtx6
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/hhline.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/indentfirst.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/layout.dtx31
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/longtable.dtx114
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/longtable.ins8
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/multicol.dtx2
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/multicol.ins8
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/rawfonts.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/shellesc.dtx6
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/showkeys.dtx6
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/somedefs.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/tabularx.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/tabularx.ins8
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/theorem.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/tools.ins8
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/trace.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/varioref.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/varioref.ins8
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/verbatim.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/xr.dtx4
-rw-r--r--Master/texmf-dist/source/latex-dev/tools/xspace.dtx4
133 files changed, 7056 insertions, 752 deletions
diff --git a/Master/texmf-dist/source/latex-dev/base/alltt.dtx b/Master/texmf-dist/source/latex-dev/base/alltt.dtx
index 0810cd73023..350229ab40f 100644
--- a/Master/texmf-dist/source/latex-dev/base/alltt.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/alltt.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -30,7 +30,7 @@
%%
%% File `alltt.dtx'.
%% Copyright (C) 1987 by Leslie Lamport
-%% Copyright (C) 1994--2020 LaTeX3 project, Johannes Braams
+%% Copyright (C) 1994-2021 LaTeX Project, Johannes Braams
%% all rights reserved.
%%
%<*dtx>
@@ -40,10 +40,11 @@
%<package>\ProvidesPackage{alltt}
%<driver>\ProvidesFile{alltt.drv}
%\ProvidesFile{alltt.dtx}
- [2020/11/23 v2.0g defines alltt environment]
+ [2021/01/29 v2.0g defines alltt environment]
%
%<*driver>
\documentclass{ltxdoc}
+\usepackage{alltt}
\begin{document}
\providecommand{\Lenv}[1]{\textsf{#1}}
\providecommand{\pkg}[1]{\texttt{#1}}
@@ -55,6 +56,8 @@
%
% \changes{v2.0g}{1997/06/16}{A few documentation fixes (PR 2520)}
% \changes{v2.0d}{1995/04/02}{A few documentation fixes (PR 1517)}
+% \changes{v2.0g}{2021-01-29}{Added a warning about OT1 versus T1 font
+% encoding}
%
% \GetFileInfo{alltt.dtx}
% \title{The \texttt{alltt} environment\thanks{This file
@@ -88,11 +91,19 @@
% extra blank line if you're not careful.
%
% \item Insert a math formula. Note that |$| just produces a dollar
-% sign, so you'll have to type |\(...\)| or |\[...\]|. Also, |^|
-% and |_| just produce their characters; use |\sp| or |\sb| for
-% super- and subscripts, as in |\(x\sp{2}\)|.
+% sign, so you'll have to type |\(...\)| or |\[...\]|. Also, |^|
+% and |_| just produce their characters; use |\sp| or |\sb| for
+% super- and subscripts, as in |\(x\sp{2}\)|.
% \end{itemize}
%
+% \textbf{NB} When you are using \textsf{OT1} encoded fonts you might
+% be surprsied when you switch to italics, becuase those fonts have
+% a different set of glyphs:
+% \begin{alltt}
+% The glyph at the position of the $ in a slanted font: \textsl{$}.
+% The glyph at the position of the $ in an italic font: \textit{$}.
+% \end{alltt}
+%
% \StopEventually{}
%
% \section{The Implementation}
diff --git a/Master/texmf-dist/source/latex-dev/base/alltt.ins b/Master/texmf-dist/source/latex-dev/base/alltt.ins
index 817a00f3a68..7ce21032079 100644
--- a/Master/texmf-dist/source/latex-dev/base/alltt.ins
+++ b/Master/texmf-dist/source/latex-dev/base/alltt.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/classes.dtx b/Master/texmf-dist/source/latex-dev/base/classes.dtx
index c91b3381435..ffe04c620fa 100644
--- a/Master/texmf-dist/source/latex-dev/base/classes.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/classes.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -53,7 +53,7 @@
%<*driver>
\ProvidesFile{classes.drv}
%</driver>
- [2020/11/23 v1.4m
+ [2021/02/12 v1.4n
%<article|report|book> Standard LaTeX document class]
%<10pt|11pt|12pt> Standard LaTeX file (size option)]
% \end{macrocode}
@@ -221,9 +221,9 @@
% file has version number \fileversion, last revised \filedate.}}
%
% \author{%
-% Copyright (C) 1992 by Leslie Lamport \and
-% Copyright (C) 1994-2020 by Frank Mittelbach \and Johannes Braams \and
-% \LaTeX3 Project Team
+% Copyright (C) 1992 by Leslie Lamport and
+% Copyright (C) 1994-2020 by Frank Mittelbach and Johannes Braams and
+% LaTeX Project Team
% }
% \date{\filedate}
% \MaintainedByLaTeXTeam{latex}
@@ -2953,11 +2953,12 @@
% the labels of the various itemization levels: the symbols used are
% bullet, bold en-dash, centered asterisk and centred dot.
%
+% \changes{v1.4n}{2021/06/11}{Drop incorrect space in \cs{labelitemiv} (gh/496)}
% \begin{macrocode}
\newcommand\labelitemi {\labelitemfont \textbullet}
\newcommand\labelitemii {\labelitemfont \bfseries \textendash}
\newcommand\labelitemiii{\labelitemfont \textasteriskcentered}
-\newcommand\labelitemiv{ \labelitemfont \textperiodcentered}
+\newcommand\labelitemiv {\labelitemfont \textperiodcentered}
% \end{macrocode}
%
% \begin{macro}{\labelitemfont}
@@ -2966,13 +2967,16 @@
% produced regardless of surrounding conditions.
%
% \changes{v1.4l}{2019/12/20}{Normalize label fonts}
-% A possible alternative would be
+% Possible alternatives would be, for example,
%\begin{verbatim}
-%\renewcommand\labelitemfont{%
-% \fontseries\seriesdefault
-% \fontshape\shapedefault\selectfont}
+% \renewcommand\labelitemfont
+% {\normalfont\fontfamily{lmss}\selectfont}
+% \renewcommand\labelitemfont
+% {\rmfamily\normalshape}
%\end{verbatim}
-% which resets series and shape doesn't touch the family.
+% the first would use symbols from Latin Modern Sans, the second
+% would only allow changes in the font series so that an
+% \texttt{itemize} in a bold context would produce bolder symbols.
% \begin{macrocode}
\newcommand\labelitemfont{\normalfont}
% \end{macrocode}
diff --git a/Master/texmf-dist/source/latex-dev/base/classes.ins b/Master/texmf-dist/source/latex-dev/base/classes.ins
index b3f3e19fc40..be0dcaf8ff3 100644
--- a/Master/texmf-dist/source/latex-dev/base/classes.ins
+++ b/Master/texmf-dist/source/latex-dev/base/classes.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/cmextra.ins b/Master/texmf-dist/source/latex-dev/base/cmextra.ins
index f96b04221a7..c530e04d0bb 100644
--- a/Master/texmf-dist/source/latex-dev/base/cmextra.ins
+++ b/Master/texmf-dist/source/latex-dev/base/cmextra.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/cmfonts.fdd b/Master/texmf-dist/source/latex-dev/base/cmfonts.fdd
index 1eb318b0492..f991ee564ee 100644
--- a/Master/texmf-dist/source/latex-dev/base/cmfonts.fdd
+++ b/Master/texmf-dist/source/latex-dev/base/cmfonts.fdd
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright 1993-2019
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/cmfonts.ins b/Master/texmf-dist/source/latex-dev/base/cmfonts.ins
index 430abdd5f96..d54a325f42e 100644
--- a/Master/texmf-dist/source/latex-dev/base/cmfonts.ins
+++ b/Master/texmf-dist/source/latex-dev/base/cmfonts.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/doc.dtx b/Master/texmf-dist/source/latex-dev/base/doc.dtx
index c860a674382..c1a96948a89 100644
--- a/Master/texmf-dist/source/latex-dev/base/doc.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/doc.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/docstrip.dtx b/Master/texmf-dist/source/latex-dev/base/docstrip.dtx
index ea3a443c395..c7480988b44 100644
--- a/Master/texmf-dist/source/latex-dev/base/docstrip.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/docstrip.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -42,7 +42,7 @@
%% Frank Mittelbach
%% Copyright (C) 1995 Marcin Woli\'nski
%% Copyright (C) 1996-1997 Mark Wooding, Marcin Woli\'nski
-%% Copyright (C) 1998-2020 LaTeX3 project and the above authors
+%% Copyright (C) 1998-2021 LaTeX Project and the above authors.
%% All rights are reserved.
%%
%
@@ -789,7 +789,7 @@
%
% \section{Internal functions and variables}
%
-% An important consideration for \LaTeX3 development is separating
+% An important consideration for \LaTeX\ development is separating
% out public and internal functions. Functions and variables which
% are private to one module should not be used or modified by any
% other module. As \TeX{} does not have any formal namespacing
diff --git a/Master/texmf-dist/source/latex-dev/base/docstrip.ins b/Master/texmf-dist/source/latex-dev/base/docstrip.ins
index edc75d8258c..e34281fc365 100644
--- a/Master/texmf-dist/source/latex-dev/base/docstrip.ins
+++ b/Master/texmf-dist/source/latex-dev/base/docstrip.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -53,7 +53,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ec.ins b/Master/texmf-dist/source/latex-dev/base/ec.ins
index ce702d8a27f..90b7b2e61f3 100644
--- a/Master/texmf-dist/source/latex-dev/base/ec.ins
+++ b/Master/texmf-dist/source/latex-dev/base/ec.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/exscale.dtx b/Master/texmf-dist/source/latex-dev/base/exscale.dtx
index b6f465443f5..ea67cb6fb72 100644
--- a/Master/texmf-dist/source/latex-dev/base/exscale.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/exscale.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/exscale.ins b/Master/texmf-dist/source/latex-dev/base/exscale.ins
index 8a22a7f9385..cfd2c535a77 100644
--- a/Master/texmf-dist/source/latex-dev/base/exscale.ins
+++ b/Master/texmf-dist/source/latex-dev/base/exscale.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/fix-cm.dtx b/Master/texmf-dist/source/latex-dev/base/fix-cm.dtx
index d844b65aa51..1be2e16cc09 100644
--- a/Master/texmf-dist/source/latex-dev/base/fix-cm.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/fix-cm.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/fix-cm.ins b/Master/texmf-dist/source/latex-dev/base/fix-cm.ins
index 840d5e408c2..95931970f47 100644
--- a/Master/texmf-dist/source/latex-dev/base/fix-cm.ins
+++ b/Master/texmf-dist/source/latex-dev/base/fix-cm.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/fontdef.dtx b/Master/texmf-dist/source/latex-dev/base/fontdef.dtx
index 6900a020744..581cfeb7895 100644
--- a/Master/texmf-dist/source/latex-dev/base/fontdef.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/fontdef.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -39,7 +39,7 @@
%<driver, >\ProvidesFile{fontdef.drv}
% \fi
% \ProvidesFile{fontdef.dtx}
-%<-latexrelease> [2020/11/24 v3.0i LaTeX Kernel
+%<-latexrelease> [2021/01/15 v3.0i LaTeX Kernel
% \iftrue (\else
%<text, >(Text
%<math, >(Math
@@ -227,7 +227,7 @@
% described in \texttt{ltoutenc.dtx}.
%
% By convention, text encoding specific declarations, including the
-% declaration |\DeclareFontEncoding|, are kept in separate file of
+% |\DeclareFontEncoding| declaration, are kept in separate file of
% the form \meta{enc}\texttt{enc.def}, e.g.~\texttt{ot1enc.def}. This
% allows other applications to make use of the declarations as
% well.
diff --git a/Master/texmf-dist/source/latex-dev/base/format.ins b/Master/texmf-dist/source/latex-dev/base/format.ins
index f872c31a3e4..9c90555b9f3 100644
--- a/Master/texmf-dist/source/latex-dev/base/format.ins
+++ b/Master/texmf-dist/source/latex-dev/base/format.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
@@ -88,8 +88,8 @@ reports for it can be opened at https://latex-project.org/bugs.html
(but please observe conditions on bug reports sent to that address!)
-Copyright 2015
-The LaTeX3 Project and any individual authors listed elsewhere
+Copyright (C) 2015-2021
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
@@ -124,7 +124,7 @@ extension .ins) which are part of the distribution.
This is a generated file.
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
@@ -166,6 +166,7 @@ the system are in the document `cfgguide.tex'.
% we have the extensions as soon as possible.
\from{ltexpl.dtx}{2ekernel} % expl3-based extensions
\from{ltdefns.dtx}{2ekernel}
+ \from{ltcmd.dtx}{2ekernel} % Used to be xparse
\from{lthooks.dtx}{2ekernel} % L3 layer module
\from{ltalloc.dtx}{2ekernel}
\from{ltcntrl.dtx}{2ekernel}
@@ -233,13 +234,15 @@ the system are in the document `cfgguide.tex'.
% hook management support
-\generate{\file{everyshi-ltx.sty}{\from{ltshipout.dtx}{everyshi-ltx}}} % emulating everyshi
\generate{\file{atbegshi-ltx.sty}{\from{ltshipout.dtx}{atbegshi-ltx}}} % emulating atbegshi
\generate{\file{atveryend-ltx.sty}{\from{ltfilehook.dtx}{atveryend-ltx}}} % emulating atveryend
\generate{\file{structuredlog.sty}{\from{ltfilehook.dtx}{structuredlog}}}
+% hook managed para
+
+\generate{\file{ltpara.ltx}{\from{ltpara.dtx}{2ekernel}}}
% luatex support (TeX part)
diff --git a/Master/texmf-dist/source/latex-dev/base/graphpap.dtx b/Master/texmf-dist/source/latex-dev/base/graphpap.dtx
index 0a89a25fe11..cc9f4da3cb1 100644
--- a/Master/texmf-dist/source/latex-dev/base/graphpap.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/graphpap.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/graphpap.ins b/Master/texmf-dist/source/latex-dev/base/graphpap.ins
index 9528f3dcdc5..65156ad9176 100644
--- a/Master/texmf-dist/source/latex-dev/base/graphpap.ins
+++ b/Master/texmf-dist/source/latex-dev/base/graphpap.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ifthen.dtx b/Master/texmf-dist/source/latex-dev/base/ifthen.dtx
index f07e4aa8f16..acb5cf19670 100644
--- a/Master/texmf-dist/source/latex-dev/base/ifthen.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ifthen.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -30,7 +30,7 @@
%%
%% File `ifthen.dtx'.
%% Copyright (C) 1991 by Leslie Lamport
-%% Copyright (C) 1994-2001 LaTeX3 project, David Carlisle
+%% Copyright (C) 1994-2001 LaTeX project, David Carlisle
%% all rights reserved.
%%
%
diff --git a/Master/texmf-dist/source/latex-dev/base/ifthen.ins b/Master/texmf-dist/source/latex-dev/base/ifthen.ins
index d589deaafca..42e1d3f5d93 100644
--- a/Master/texmf-dist/source/latex-dev/base/ifthen.ins
+++ b/Master/texmf-dist/source/latex-dev/base/ifthen.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/inputenc.dtx b/Master/texmf-dist/source/latex-dev/base/inputenc.dtx
index d8649c778df..1b8691d30fa 100644
--- a/Master/texmf-dist/source/latex-dev/base/inputenc.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/inputenc.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% LaTeX3 Project and any individual authors listed elsewhere
+% LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -283,7 +283,7 @@
% with the |utf8| option.
%
% The |\DeclareUnicodeCharacter| takes UTF-8 code point as its first argument
-% (in form of a a hexadecimal number) and the definition that this maps to as
+% (in form of a hexadecimal number) and the definition that this maps to as
% its second argument. For example, the code point |00E4| which is
% ``LATIN SMALL LETTER A WITH DIAERESIS'' would be set up via:
%\begin{verbatim}
@@ -410,7 +410,7 @@
%<cp1252&!ansinew> \ProvidesFile{cp1252.def}
%<cp1250> \ProvidesFile{cp1250.def}
%<cp1257> \ProvidesFile{cp1257.def}
- [2020/11/26 v1.3d Input encoding file]
+ [2021/02/14 v1.3d Input encoding file]
%<cp850>%%
%<cp850>%% If you need a Euro symbol, try cp858 instead.
%<cp850>%%
diff --git a/Master/texmf-dist/source/latex-dev/base/inputenc.ins b/Master/texmf-dist/source/latex-dev/base/inputenc.ins
index 19a8606e5d4..920a585bffc 100644
--- a/Master/texmf-dist/source/latex-dev/base/inputenc.ins
+++ b/Master/texmf-dist/source/latex-dev/base/inputenc.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/latex209.dtx b/Master/texmf-dist/source/latex-dev/base/latex209.dtx
index 183028fca77..bf92f8ef1e8 100644
--- a/Master/texmf-dist/source/latex-dev/base/latex209.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/latex209.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/latex209.ins b/Master/texmf-dist/source/latex-dev/base/latex209.ins
index 7c5197b9bd4..33ebc2488c4 100644
--- a/Master/texmf-dist/source/latex-dev/base/latex209.ins
+++ b/Master/texmf-dist/source/latex-dev/base/latex209.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/latexrelease.dtx b/Master/texmf-dist/source/latex-dev/base/latexrelease.dtx
index 19a1d0db806..cfcac4b3971 100644
--- a/Master/texmf-dist/source/latex-dev/base/latexrelease.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/latexrelease.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -40,7 +40,7 @@
%<*!fixltx2e>
% \fi
% \ProvidesFile{latexrelease.dtx}
- [2020/12/06 v1.0k LaTeX release emulation and tests
+ [2021/01/23 v1.0l LaTeX release emulation and tests
(including releases up to \latexreleaseversion)]
% \iffalse
%</!fixltx2e>
@@ -69,7 +69,7 @@
% \title{The \Lpack{latexrelease} package\thanks{This file
% has version number \fileversion, last
% revised \filedate.}}
-% \author{The \LaTeX3 Project}
+% \author{The \LaTeX Project}
% \date{\filedate}
% \MaintainedByLaTeXTeam{latex}
% \maketitle
@@ -129,7 +129,6 @@
% package has no information will generate a warning. Dates
% earlier than 2015 will work but will roll back to some point in 2015
% when the method was introduced.
-% |\IncludeInRelease| command is defined.
% The |\requestedLaTeXdate| is set to the normalized date argument
% so that package rollback defaults to the specified date.
%
@@ -137,9 +136,6 @@
% |current| This is the default behaviour, it does not change the
% effective date of the format but does ensure that the
% |\IncludeInRelease| command is defined.
-% the |\requestedLaTeXdate| is reset to 0 so that package rollback
-% does not use the implicit date.
-% |\IncludeInRelease| command is defined.
% The |\requestedLaTeXdate| macro is reset to 0 so that package rollback
% does not use the implicit date.
%
@@ -147,11 +143,16 @@
% |latest| sets the effective date of the format to the release date
% of this file, so in an older format applies all patches currently
% available.
-% |\IncludeInRelease| command is defined.
% The |\requestedLaTeXdate| macro is reset to 0 so that package rollback
% does not use the implicit date.
% \end{itemize}
%
+% In all cases, when the package is loaded, the |\sourceLaTeXdate| is
+% defined to be the numerical representation of |\fmtversion| before the
+% rollback/forward actually happens, so it is possible to test from which
+% was the original \LaTeX{} version before \Lpack{latexrelease} was loaded.
+% This is particularly useful when some code in a package has to be
+% redefined differently if rolling backwards in time or forwards.
%
% \section{Release Specific Code}
%
@@ -388,6 +389,16 @@
%
% \section{Setup}
%
+% \begin{macro}{\sourceLaTeXdate}
+% \changes{v1.0l}{2021/01/23}{\cs{sourceLaTeXdate} added}
+% Store the original \LaTeX{} format version
+% as a number in the format |YYYYMMDD|:
+% \begin{macrocode}
+\edef\sourceLaTeXdate{%
+ \expandafter\@parse@version\fmtversion//00\@nil}
+% \end{macrocode}
+% \end{macro}
+%
% \begin{macro}{\IncludeInRelease}
% \begin{macro}{\EndIncludeInRelease}
% \begin{macrocode}
diff --git a/Master/texmf-dist/source/latex-dev/base/latexrelease.ins b/Master/texmf-dist/source/latex-dev/base/latexrelease.ins
index 141a677b48c..b4d0aef5677 100644
--- a/Master/texmf-dist/source/latex-dev/base/latexrelease.ins
+++ b/Master/texmf-dist/source/latex-dev/base/latexrelease.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
@@ -93,6 +93,7 @@ extension .ins) which are part of the distribution.
\from{ltluatex.dtx} {latexrelease}% empty
\from{ltexpl.dtx} {latexrelease}% empty
\from{ltdefns.dtx} {latexrelease}%
+ \from{ltcmd.dtx} {latexrelease}%
\from{lthooks.dtx} {latexrelease}% empty % L3 layer module
\from{ltalloc.dtx} {latexrelease}% empty
\from{ltcntrl.dtx} {latexrelease}% empty
diff --git a/Master/texmf-dist/source/latex-dev/base/latexsym.dtx b/Master/texmf-dist/source/latex-dev/base/latexsym.dtx
index c53dac62f0c..7a97aa4318c 100644
--- a/Master/texmf-dist/source/latex-dev/base/latexsym.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/latexsym.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/latexsym.ins b/Master/texmf-dist/source/latex-dev/base/latexsym.ins
index 620046ac9ba..902bbfc9e8e 100644
--- a/Master/texmf-dist/source/latex-dev/base/latexsym.ins
+++ b/Master/texmf-dist/source/latex-dev/base/latexsym.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
@@ -88,7 +88,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/letter.dtx b/Master/texmf-dist/source/latex-dev/base/letter.dtx
index faece887f86..3c7fe56ba15 100644
--- a/Master/texmf-dist/source/latex-dev/base/letter.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/letter.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -165,7 +165,7 @@
% \changes{v1.3a}{2020/03/07}{merged changes to classes.dtx into letter.dtx}
%
% \iffalse
-% Copyright (C) 1994 LaTeX3 project, Frank Mittelbach
+% Copyright (C) 1994 LaTeX Project, Frank Mittelbach
% and Rainer Sch\"opf, all rights reserved.
% \fi
%
diff --git a/Master/texmf-dist/source/latex-dev/base/letter.ins b/Master/texmf-dist/source/latex-dev/base/letter.ins
index 1c2b2f9f010..44777393eb6 100644
--- a/Master/texmf-dist/source/latex-dev/base/letter.ins
+++ b/Master/texmf-dist/source/latex-dev/base/letter.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltalloc.dtx b/Master/texmf-dist/source/latex-dev/base/ltalloc.dtx
index 3328c1f504d..59c492836f9 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltalloc.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltalloc.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltbibl.dtx b/Master/texmf-dist/source/latex-dev/base/ltbibl.dtx
index 7f5066542f3..0319342dd49 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltbibl.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltbibl.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltboxes.dtx b/Master/texmf-dist/source/latex-dev/base/ltboxes.dtx
index ec192293f10..8281b4b712b 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltboxes.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltboxes.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -33,7 +33,7 @@
%<*driver>
% \fi
\ProvidesFile{ltboxes.dtx}
- [2020/12/05 v1.4a LaTeX Kernel (Box Commands)]
+ [2021/02/10 v1.4b LaTeX Kernel (Box Commands)]
% \iffalse
\documentclass{ltxdoc}
\GetFileInfo{ltboxes.dtx}
@@ -222,7 +222,7 @@
% \changes{v1.0j}{1994/10/18}
% {stuff from ltpatch done}
% \changes{v1.0p}{1994/11/09}
-% {more colour changes\ldots}
+% {more color changes\ldots}
% \changes{v1.0q}{1994/11/17}
% {\cs{@tempa} to \cs{reserved@a}}
% \changes{v1.0t}{1995/05/07}{Use \cs{hb@xt@}}
@@ -422,7 +422,7 @@
% {macro added}
% \changes{v0.1a}{1993/12/03}
% {color support}
-% This macro is initially a no-op, but the colour package will redefine
+% This macro is initially a no-op, but the color package will redefine
% it to insert a |\special|.
% \begin{macrocode}
\let\set@color\relax
@@ -431,38 +431,66 @@
%
% \begin{macro}{\color@begingroup}
% \changes{v1.0b}{1994/03/14}
-% {macro added for colour support}
+% {macro added for color support}
% \begin{macro}{\color@endgroup}
% \changes{v1.0b}{1994/03/14}
-% {macro added for colour support}
+% {macro added for color support}
% \begin{macro}{\color@setgroup}
% \changes{v1.0f}{1994/05/11}
-% {macro added for colour support}
+% {macro added for color support}
% \begin{macro}{\normalcolor}
% \changes{v1.0g}{1994/05/12}
-% {macro added for colour support}
+% {macro added for color support}
% \begin{macro}{\color@hbox}
% \changes{v1.0n}{1994/11/05}
-% {macro added for colour support}
+% {macro added for color support}
% \begin{macro}{\color@vbox}
% \changes{v1.0r}{1994/11/18}
-% {macro added for colour support}
+% {macro added for color support}
% \begin{macro}{\color@endbox}
% \changes{v1.0n}{1994/11/05}
-% {macro added for colour support}
-% These macros are initially a no-op, but the colour package will
+% {macro added for color support}
+% \changes{v1.4b}{2021/02/04}
+% {Always add the color groups (gh/488)}
+% In the past these macros were initially no-ops, and the \pkg{color}
+% package redefined
% redefine them to be |\begingroup|, |\endgroup|,
% |\begingroup\set@color|,\\ |\hbox\bgroup\color@begingroup|,
% |\color@endgroup\egroup|.
-% and \meta{set to main document colour} respectively.
+% and \meta{set to main document color} respectively.
+%
+% Nowadays we always set the group already in the kernel as this makes the
+% coding simpler.
% \begin{macrocode}
-\let\color@begingroup\relax
-\let\color@endgroup\relax
-\let\color@setgroup\relax
-\let\normalcolor\relax
-\let\color@hbox\relax
-\let\color@vbox\relax
-\let\color@endbox\relax
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2021/05/01}%
+%<latexrelease> {\color@begingroup}{color group settings}%
+\let\color@begingroup\begingroup
+\def\color@endgroup{\endgraf\endgroup}
+\def\color@setgroup{\color@begingroup} % changed further in color package
+\let\normalcolor\relax % remains untouched; only changed in a color package
+\def\color@hbox{\hbox\bgroup\color@begingroup}
+\def\color@vbox{\vbox\bgroup\color@begingroup}
+\def\color@endbox{\color@endgroup\egroup}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\color@begingroup}{color group settings}%
+%<latexrelease>
+%<latexrelease>\let\color@begingroup\relax
+%<latexrelease>\let\color@endgroup\relax
+%<latexrelease>\let\color@setgroup\relax
+%<latexrelease>\let\normalcolor\relax
+%<latexrelease>\let\color@hbox\relax
+%<latexrelease>\let\color@vbox\relax
+%<latexrelease>\let\color@endbox\relax
+%<latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
% \end{macrocode}
% \end{macro}
% \end{macro}
@@ -1016,7 +1044,7 @@
%
% \begin{macro}{\@iiiminipage}
% \changes{v1.0e}{1994/04/21}
-% {Extra \cs{bgroup} for colour}
+% {Extra \cs{bgroup} for color}
% \changes{v1.0f}{1994/05/11}
% {Use new \cs{color@setgroup} concept.}
% Internal form of |minipage|.
@@ -1054,11 +1082,11 @@
% {(RmS) replaced \cs{vskip}-\cs{lastskip} by \cs{unskip}
% (proposed by FMi)}
% \changes{v1.0e}{1994/04/21}
-% {Extra \cs{egroup} for colour}
+% {Extra \cs{egroup} for color}
% \changes{v1.0f}{1994/05/11}
% {Use new \cs{color@setgroup} concept.}
% \changes{v1.0n}{1994/11/05}
-% {Colour resetting for footnotes moved to here: as for main
+% {Color resetting for footnotes moved to here: as for main
% page.}
% \begin{macrocode}
\def\endminipage{%
@@ -1093,9 +1121,9 @@
% Final |\strut| added 27 Mar 89, on suggestion by Don Hosek
% \changes{LaTeX2.09}{1991/09/29}{(RmS) added \cs{reset@font}}
% \changes{LaTeX2.09}{1992/11/26}{(RmS) added protection for \cs{edef}}
-% \changes{v0.1a}{1994/03/07}{Extra group for colour}
+% \changes{v0.1a}{1994/03/07}{Extra group for color}
% \changes{v1.0e}{1994/04/21}
-% {Extra \cs{endgraf} for colour}
+% {Extra \cs{endgraf} for color}
% \changes{v1.0f}{1994/05/11}
% {Use new \cs{color@setgroup} concept.}
% \changes{v1.0f}{1994/05/11}
@@ -1103,11 +1131,17 @@
% \changes{v1.0m}{1994/11/04}
% {Added \cs{protected@edef}. ASAJ.}
% \changes{v1.0n}{1994/11/05}
-% {Colour resetting for footnotes moved to endminipage: as for main
+% {Color resetting for footnotes moved to endminipage: as for main
% page.}
% \changes{v1.0o}{1994/11/05}
-% {Colour groups restored here.}
+% {Color groups restored here.}
+% \changes{v1.4b}{2021/02/10}
+% {Explicitly run \cs{par} in support for paragraph tagging}
% \begin{macrocode}
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2021/05/01}%
+%<latexrelease> {\@mpfootnotetext}{footnotetext tagging}%
\long\def\@mpfootnotetext#1{%
\global\setbox\@mpfootins\vbox{%
\unvbox\@mpfootins
@@ -1119,7 +1153,31 @@
\color@begingroup
\@makefntext{%
\rule\z@\footnotesep\ignorespaces#1\@finalstrut\strutbox}%
+ \par
\color@endgroup}}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\@mpfootnotetext}{footnotetext tagging}%
+%<latexrelease>
+%<latexrelease>\long\def\@mpfootnotetext#1{%
+%<latexrelease> \global\setbox\@mpfootins\vbox{%
+%<latexrelease> \unvbox\@mpfootins
+%<latexrelease> \reset@font\footnotesize
+%<latexrelease> \hsize\columnwidth
+%<latexrelease> \@parboxrestore
+%<latexrelease> \protected@edef\@currentlabel
+%<latexrelease> {\csname p@mpfootnote\endcsname\@thefnmark}%
+%<latexrelease> \color@begingroup
+%<latexrelease> \@makefntext{%
+%<latexrelease> \rule\z@\footnotesep\ignorespaces#1\@finalstrut\strutbox}%
+%<latexrelease> \color@endgroup}}
+%<latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
% \end{macrocode}
% \end{macro}
%
diff --git a/Master/texmf-dist/source/latex-dev/base/ltclass.dtx b/Master/texmf-dist/source/latex-dev/base/ltclass.dtx
index 1400ec0a62d..26667cbeb1b 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltclass.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltclass.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -33,7 +33,7 @@
%<*driver>
% \fi
\ProvidesFile{ltclass.dtx}
- [2020/12/17 v1.3v LaTeX Kernel (Class & Package Interface)]
+ [2021/02/18 v1.3x LaTeX Kernel (Class & Package Interface)]
% \iffalse
\documentclass{ltxdoc}
\GetFileInfo{ltclass.dtx}
@@ -712,6 +712,7 @@
% Path to the current file if explicitly given. The auxiliary is
% needed here to insert a \cs{@empty} to prevent the loss of braces.
% \changes{v1.3u}{2020/11/20}{Macro added}
+% \changes{v1.3w}{2021/01/21}{Add empty entry for latexrelease}
% \begin{macrocode}
%</2ekernel>
%<*2ekernel|latexrelease>
@@ -719,6 +720,7 @@
%<latexrelease>\IncludeInRelease{2020/10/01}{\@kernel@currpathstack}%
%<latexrelease> {Add \@kernel@currpathstack}%
\gdef\@kernel@currpathstack{}
+%<latexrelease>\g@addto@macro\@kernel@currpathstack{{}}
\def\@p@pfilepath#1{%
\gdef\@currpath{#1}\@p@pfilepath@aux\@empty}
\def\@p@pfilepath@aux#1\@nil{%
@@ -1164,13 +1166,14 @@
%
% \begin{macro}{\PassOptionsToPackage}
% \begin{macro}{\PassOptionsToClass}
-% If the package has been loaded, we check that it was first loaded with
-% the options. Otherwise we add the option list to that of the package.
+% If the package has been loaded, we check that it was first loaded with
+% the options. Otherwise we add the option list to that of the package.
% \changes{v1.3t}{2020/10/18}{Drop path from \cs{input@path} (gh/414).}
+% \changes{v1.3x}{2021/02/18}{save raw option lists (gh/85)}
% \begin{macrocode}
%</2ekernel>
-%<latexrelease>\IncludeInRelease{2020/10/01}{\@pass@ptions}
-%<latexrelease> {Add file replacement in \@pass@ptions}%
+%<latexrelease>\IncludeInRelease{2021/05/01}%
+%<latexrelease> {\@pass@ptions}{Raw option lists}%
%<*2ekernel|latexrelease>
\def\@pass@ptions#1#2#3{%
\@expl@@@filehook@set@curr@file@@nNN
@@ -1187,12 +1190,41 @@
% \begin{macrocode}
\expandafter\let
\csname opt@#3.#1\expandafter\endcsname
- \csname opt@\reserved@a\endcsname}
+ \csname opt@\reserved@a\endcsname
+% \end{macrocode}
+% Extend raw option list
+% \begin{macrocode}
+ \@ifundefined{@raw@opt@#3.#1}%
+ {\expandafter\gdef\csname @raw@opt@#3.#1\endcsname{#2}}%
+ {\expandafter\g@addto@macro\csname @raw@opt@#3.#1\endcsname{,#2}}%
+}
%</2ekernel|latexrelease>
%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<latexrelease>\IncludeInRelease{2020/10/01}{\@pass@ptions}
+%<latexrelease> {Add file replacement in \@pass@ptions}%
+%<latexrelease>
+%<latexrelease>\def\@pass@ptions#1#2#3{%
+%<latexrelease> \@expl@@@filehook@set@curr@file@@nNN
+%<latexrelease> {\@expl@@@filehook@resolve@file@subst@@w #3.#1\@nil}%
+%<latexrelease> \reserved@a\reserved@b
+%<latexrelease> \@expl@@@filehook@clear@replacement@flag@@
+%<latexrelease> \expandafter\xdef\csname opt@\reserved@a\endcsname{%
+%<latexrelease> \@ifundefined{opt@\reserved@a}\@empty
+%<latexrelease> {\csname opt@\reserved@a\endcsname,}%
+%<latexrelease> \zap@space#2 \@empty}%
+%<latexrelease> \expandafter\let
+%<latexrelease> \csname opt@#3.#1\expandafter\endcsname
+%<latexrelease> \csname opt@\reserved@a\endcsname}
+%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
%
+% \begin{macrocode}
%<latexrelease>\IncludeInRelease{0000/00/00}{\@pass@ptions}
%<latexrelease> {\@pass@ptions}%
+%<latexrelease>
%<latexrelease>\def\@pass@ptions#1#2#3{%
%<latexrelease> \expandafter\xdef\csname opt@#3.#1\endcsname{%
%<latexrelease> \@ifundefined{opt@#3.#1}\@empty
@@ -1200,6 +1232,9 @@
%<latexrelease> \zap@space#2 \@empty}}
%<latexrelease>\EndIncludeInRelease
%<*2ekernel>
+% \end{macrocode}
+%
+% \begin{macrocode}
\@onlypreamble\@pass@ptions
% \end{macrocode}
%
@@ -1241,18 +1276,49 @@
% \end{macro}
%
% \begin{macro}{\OptionNotUsed}
+% \changes{v1.3x}{2021/02/18}{filter out =value from unused option list (gh/85)}
+% \begin{macro}{\@remove@eq@value}
+% \changes{v1.3x}{2021/02/18}{macro added (gh/85)}
% If we are in a class file, add |\CurrentOption| to the list of
% unused options. Otherwise, in a package file do nothing.
% \begin{macrocode}
+%</2ekernel>
+%<latexrelease>\IncludeInRelease{2021/05/01}%
+%<latexrelease> {\OptionNotUsed}{filter unused option list}%
+%<*2ekernel|latexrelease>
+\def\@remove@eq@value#1=#2\@nil{#1}
+% \end{macrocode}
+%
+% \begin{macrocode}
\def\OptionNotUsed{%
\ifx\@currext\@clsextension
\xdef\@unusedoptionlist{%
\ifx\@unusedoptionlist\@empty\else\@unusedoptionlist,\fi
- \CurrentOption}%
+ \expandafter\@remove@eq@value\CurrentOption=\@nil}%
\fi}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\OptionNotUsed}{filter unused option list}%
+%<latexrelease>\let\@remove@eq@value\@undefined
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<latexrelease>\def\OptionNotUsed{%
+%<latexrelease> \ifx\@currext\@clsextension
+%<latexrelease> \xdef\@unusedoptionlist{%
+%<latexrelease> \ifx\@unusedoptionlist\@empty\else\@unusedoptionlist,\fi
+%<latexrelease> \CurrentOption}%
+%<latexrelease> \fi}
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
+% \end{macrocode}
+%
+% \begin{macrocode}
\@onlypreamble\OptionNotUsed
% \end{macrocode}
% \end{macro}
+% \end{macro}
%
% \begin{macro}{\default@ds}
% The default option code.
@@ -1403,11 +1469,30 @@
% {Name changed from \cs{@executeoption}}
% \changes{v1.0e}{1994/05/17}
% {Execute option after removing from list, not before}
+% \changes{v1.3x}{2021/02/18}{filter out =value from unused option list (gh/85)}
% \begin{macrocode}
+%</2ekernel>
+%<latexrelease>\IncludeInRelease{2021/05/01}%
+%<latexrelease> {\@use@ption}{filter unused option list}%
+%<*2ekernel|latexrelease>
\def\@use@ption{%
- \@expandtwoargs\@removeelement\CurrentOption
+ \@expandtwoargs\@removeelement
+ {\expandafter\@remove@eq@value\CurrentOption=\@nil}%
\@unusedoptionlist\@unusedoptionlist
\csname ds@\CurrentOption\endcsname}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\@use@ption}{filter unused option list}%
+%<latexrelease>\def\@use@ption{%
+%<latexrelease> \@expandtwoargs\@removeelement\CurrentOption
+%<latexrelease> \@unusedoptionlist\@unusedoptionlist
+%<latexrelease> \csname ds@\CurrentOption\endcsname}
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
+% \end{macrocode}
+%
+% \begin{macrocode}
\@onlypreamble\@use@ption
% \end{macrocode}
% \end{macro}
@@ -1721,15 +1806,23 @@
% {Prevent loss of brackets PR/3965}
% \changes{v2.1b}{2016/11/09}
% {Improve \cs{ifx} tests PR/4497}
+% \changes{v1.3x}{2021/02/18}{save raw class option list (gh/85)}
% \begin{macrocode}
%</2ekernel>
-%<latexrelease>\IncludeInRelease{2017/01/01}%
+%<latexrelease>\IncludeInRelease{2020/10/01}%
%<latexrelease> {\@fileswith@pti@ns}{ifx tests in \@fileswith@pti@ns}%
%<*2ekernel|latexrelease>
\def\@fileswith@pti@ns#1[#2]#3[#4]{%
\ifx#1\@clsextension
\ifx\@classoptionslist\relax
\xdef\@classoptionslist{\zap@space#2 \@empty}%
+% \end{macrocode}
+% Save raw class list.
+% \begin{macrocode}
+ \gdef\@raw@classoptionslist{#2}%
+% \end{macrocode}
+%
+% \begin{macrocode}
\def\reserved@a{%
\@onefilewithoptions#3[{#2}][{#4}]#1%
\@documentclasshook}%
@@ -1768,6 +1861,33 @@
\fi
\reserved@a}
%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<latexrelease>\IncludeInRelease{2017/01/01}%
+%<latexrelease> {\@fileswith@pti@ns}{ifx tests in \@fileswith@pti@ns}%
+%<latexrelease>\def\@fileswith@pti@ns#1[#2]#3[#4]{%
+%<latexrelease> \ifx#1\@clsextension
+%<latexrelease> \ifx\@classoptionslist\relax
+%<latexrelease> \xdef\@classoptionslist{\zap@space#2 \@empty}%
+%<latexrelease> \def\reserved@a{%
+%<latexrelease> \@onefilewithoptions#3[{#2}][{#4}]#1%
+%<latexrelease> \@documentclasshook}%
+%<latexrelease> \else
+%<latexrelease> \def\reserved@a{%
+%<latexrelease> \@onefilewithoptions#3[{#2}][{#4}]#1}%
+%<latexrelease> \fi
+%<latexrelease> \else
+%<latexrelease> \def\reserved@b##1,{%
+%<latexrelease> \ifx\@nnil##1\relax\else
+%<latexrelease> \ifx\@nnil##1\@nnil\else
+%<latexrelease> \noexpand\@onefilewithoptions##1[{#2}][{#4}]%
+%<latexrelease> \noexpand\@pkgextension
+%<latexrelease> \fi
+%<latexrelease> \expandafter\reserved@b
+%<latexrelease> \fi}%
+%<latexrelease> \edef\reserved@a{\zap@space#3 \@empty}%
+%<latexrelease> \edef\reserved@a{\expandafter\reserved@b\reserved@a,\@nnil,}%
+%<latexrelease> \fi
+%<latexrelease> \reserved@a}
% \end{macrocode}
%
% \begin{macrocode}
@@ -2640,7 +2760,8 @@
% Text before the |\end|, write it with a warning.
% \begin{macrocode}
\@latex@warning{Writing text `##1' before %
- \string\end{\@currenvir}\MessageBreak as last line of \@curr@file}%
+ \string\end{\@currenvir}\MessageBreak
+ as last line of \@curr@file}%
\immediate\write\reserved@c{##1}%
\fi%
\ifx\relax##2\relax%
@@ -2675,7 +2796,8 @@
%</2ekernel|latexrelease>
%<latexrelease>\EndIncludeInRelease
%<latexrelease>\IncludeInRelease{2019/10/01}%
-%<latexrelease> {\filec@ntents}{Spaces in file names + optional arg}%
+%<latexrelease> {\filec@ntents}{Spaces in file names + optional arg}%
+%<latexrelease>
%<latexrelease>\def\filecontents{\@tempswatrue\@fileswtrue
%<latexrelease> \@ifnextchar[\filec@ntents@opt\filec@ntents
%<latexrelease>}
@@ -2805,7 +2927,7 @@
%<latexrelease>\endgroup%
%<latexrelease>\EndIncludeInRelease
%<latexrelease>\IncludeInRelease{0000/00/00}%
-%<latexrelease> {\filec@ntents}{Spaces in file names + optional arg}%
+%<latexrelease> {\filec@ntents}{Spaces in file names + optional arg}%
%<latexrelease>
%<latexrelease>\let\filec@ntents@opt \@undefined
%<latexrelease>\let\filec@ntents@force \@undefined
diff --git a/Master/texmf-dist/source/latex-dev/base/ltcmd.dtx b/Master/texmf-dist/source/latex-dev/base/ltcmd.dtx
new file mode 100644
index 00000000000..26ce75224fb
--- /dev/null
+++ b/Master/texmf-dist/source/latex-dev/base/ltcmd.dtx
@@ -0,0 +1,4041 @@
+% \iffalse meta-comment
+%
+% Copyright (C) 1999 Frank Mittelbach, Chris Rowley, David Carlisle
+% Copyright (C) 2004-2008 Frank Mittelbach, The LaTeX3 Project
+% Copyright (C) 2009-2021
+% The LaTeX Project and any individual authors listed elsewhere
+% in this file.
+%
+% This file is part of the LaTeX base system.
+% -------------------------------------------
+%
+% It 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
+% https://www.latex-project.org/lppl.txt
+% and version 1.3c or later is part of all distributions of LaTeX
+% version 2008 or later.
+%
+% This file has the LPPL maintenance status "maintained".
+%
+% The list of all files belonging to the LaTeX base distribution is
+% given in the file `manifest.txt'. See also `legal.txt' for additional
+% information.
+%
+% The list of derived (unpacked) files belonging to the distribution
+% and covered by LPPL is defined by the unpacking scripts (with
+% extension .ins) which are part of the distribution.
+%
+% \fi
+%
+% \iffalse
+%
+%%% From File: ltcmd.dtx
+%
+% \begin{macrocode}
+\def\ltcmdversion{v1.0a}
+\def\ltcmddate{2021/01/21}
+% \end{macrocode}
+%
+%<*driver>
+% \fi
+\ProvidesFile{ltcmd.dtx}
+ [2020-11-20 v1.0 LaTeX Kernel (Document commands)]
+% \iffalse
+\documentclass{l3doc}
+\GetFileInfo{ltcmd.dtx}
+\title{\filename}
+\date{\filedate}
+\author{Frank Mittelbach, Chris Rowley, David Carlisle, \LaTeX{} Project Team}
+\begin{document}
+ \maketitle
+ \DocInput{ltcmd.dtx}
+\end{document}
+%</driver>
+% \fi
+%
+% \section{Creating document commands}
+%
+% \changes{v1.0}{2020-11-20}{Initial version derived from \texttt{xparse.dtx}}
+%
+% Document commands should be created using the tools provided by this module:
+% \cs{NewDocumentCommand}, etc.\@, in almost all cases. This allows clean
+% separation of document-level syntax from code-level interfaces. Users have
+% a need to create new document commands, and as such a significant amount of
+% documentation for \pkg{ltcmd} is provided as part of \texttt{usrguide3}. Here,
+% additional material aimed at programmers is provided
+%
+% \StopEventually{}
+%
+% \begin{macrocode}
+%<@@=cmd>
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<*2ekernel>
+\message{document commands,}
+%</2ekernel>
+% \end{macrocode}
+%
+% \pkg{ltcmd} code contains an |^^@| character, which usually has
+% catcode~15, so \cs{IncludeInRelease} will break when this code is
+% being skipped, so we'll save the catcode of |^^@| to restore later:
+% \begin{macrocode}
+%<*2ekernel|latexrelease>
+%<latexrelease>\edef\@latexrelease@catcode@null{\the\catcode`\^^@ }
+%<latexrelease>\catcode`\^^@=12
+%<latexrelease>\IncludeInRelease{2021/05/01}%
+%<latexrelease> {\NewDocumentCommand}{Document commands}%
+% \end{macrocode}
+%
+% \begin{macrocode}
+\ExplSyntaxOn
+% \end{macrocode}
+%
+% \subsection{Variables and constants}
+%
+% \begin{variable}{\l_@@_arg_spec_tl}
+% Holds the argument specification after normalization of shorthands.
+% \begin{macrocode}
+\tl_new:N \l_@@_arg_spec_tl
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_args_tl}
+% Token list variable for grabbed arguments.
+% \begin{macrocode}
+\tl_new:N \l_@@_args_tl
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_args_i_tl, \l_@@_args_ii_tl}
+% Hold the modified arguments when dealing with default values or
+% processors.
+% \begin{macrocode}
+\tl_new:N \l_@@_args_i_tl
+\tl_new:N \l_@@_args_ii_tl
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_current_arg_int}
+% The number of the current argument being set up: this is used to
+% make sure there are at most 9 arguments, then for creating the
+% expandable auxiliary functions and knowing how many arguments the
+% code function should take.
+% \begin{macrocode}
+\int_new:N \l_@@_current_arg_int
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_defaults_bool, \l_@@_defaults_tl}
+% The boolean indicates whether there are any argument with default
+% value other than |-NoValue-|; the token list holds the code to
+% determine these default values in terms of other arguments.
+% \begin{macrocode}
+\bool_new:N \l_@@_defaults_bool
+\tl_new:N \l_@@_defaults_tl
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_environment_bool}
+% Generating environments uses the same mechanism as generating functions.
+% However, full processing of arguments is always needed for environments,
+% and so the function-generating code needs to know this.
+% This variable is also used at run time to give correct error messages.
+% \begin{macrocode}
+\bool_new:N \l_@@_environment_bool
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_environment_str}
+% Name of the environment, used at definition time and at run time.
+% \begin{macrocode}
+\str_new:N \l_@@_environment_str
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_expandable_bool}
+% Used to indicate if an expandable command is begin generated, as this
+% affects both the acceptable argument types and how they are implemented.
+% \begin{macrocode}
+\bool_new:N \l_@@_expandable_bool
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_expandable_aux_name_tl}
+% Used to create pretty-printing names for the auxiliaries: although the
+% immediate definition does not vary, the full expansion does and so it
+% does not count as a constant.
+% \begin{macrocode}
+\tl_new:N \l_@@_expandable_aux_name_tl
+\tl_set:Nn \l_@@_expandable_aux_name_tl
+ {
+ \l_@@_function_tl \c_space_tl
+ ( arg~ \int_use:N \l_@@_current_arg_int )
+ }
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\g_@@_grabber_int}
+% Used (in exceptional cases) to get unique names for grabbers used by
+% expandable commands.
+% \begin{macrocode}
+\int_new:N \g_@@_grabber_int
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_fn_tl}
+% For passing the pre-formed name of the auxiliary to be used as the
+% parsing function.
+% \begin{macrocode}
+\tl_new:N \l_@@_fn_tl
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_fn_code_tl}
+% For passing the pre-formed name of the auxiliary that contains the
+% actual code.
+% \begin{macrocode}
+\tl_new:N \l_@@_fn_code_tl
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_function_tl}
+% Holds the control sequence name of the function currently being
+% defined: used to avoid passing this as an argument and to avoid repeated
+% use of \cs{cs_to_str:N}.
+% \begin{macrocode}
+\tl_new:N \l_@@_function_tl
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_grab_expandably_bool}
+% When defining a non-expandable command, indicates whether the
+% arguments can all safely be grabbed by expandable grabbers. This is
+% to support abuses of \pkg{xparse} that use protected functions
+% inside csname constructions.
+% \begin{macrocode}
+\bool_new:N \l_@@_grab_expandably_bool
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_obey_spaces_bool}
+% For trailing optionals.
+% \begin{macrocode}
+\bool_new:N \l_@@_obey_spaces_bool
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_last_delimiters_tl}
+% Holds the delimiters (first tokens) of all optional arguments since
+% the previous mandatory argument, to warn about cases where it would
+% be impossible to omit optional arguments completely because the
+% following mandatory argument has the same delimiter as one of the
+% optional arguments.
+% \begin{macrocode}
+\tl_new:N \l_@@_last_delimiters_tl
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_long_bool}
+% Used to indicate that an argument is long, on a per-argument basis.
+% \begin{macrocode}
+\bool_new:N \l_@@_long_bool
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_m_args_int}
+% The number of \texttt{m} arguments: if this is the same as the total
+% number of arguments, then a short-cut can be taken in the creation of
+% the grabber code.
+% \begin{macrocode}
+\int_new:N \l_@@_m_args_int
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_prefixed_bool}
+% When preparing the signature of non-expandable commands, indicates
+% that the current argument is affected by a processor or by |+|
+% (namely is long).
+% \begin{macrocode}
+\bool_new:N \l_@@_prefixed_bool
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_process_all_tl, \l_@@_process_one_tl, \l_@@_process_some_bool}
+% When preparing the signature, the processors that will be applied to
+% a given argument are collected in \cs{l_@@_process_one_tl}, while
+% \cs{l_@@_process_all_tl} contains processors for all arguments. The
+% boolean indicates whether there are any processors (to bypass the
+% whole endeavour otherwise).
+% \begin{macrocode}
+\tl_new:N \l_@@_process_all_tl
+\tl_new:N \l_@@_process_one_tl
+\bool_new:N \l_@@_process_some_bool
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_saved_args_tl}
+% Stores \cs{l_@@_args_tl} to deal with space-trimming of
+% \texttt{b}-type arguments.
+% \begin{macrocode}
+\tl_new:N \l_@@_saved_args_tl
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_signature_tl}
+% Used when constructing the signature (code for argument grabbing) to
+% hold what will become the implementation of the main function.
+% When arguments are grabbed (at point of use of the command/environment),
+% it also stores the code for grabbing the remaining arguments.
+% \begin{macrocode}
+\tl_new:N \l_@@_signature_tl
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}
+% {\l_@@_some_obey_spaces_bool, \l_@@_some_long_bool, \l_@@_some_short_bool}
+% These flags are set while normalizing the argument specification.
+% The \texttt{obey_spaces} one is used to detect when |!| is used on
+% an argument that is not a trailing optional argument.
+% The other two are used to check whether all short arguments appear
+% before long arguments: this is needed to grab arguments expandably.
+% As soon as the first long argument is seen (other than
+% \texttt{t}-type, whose long status is ignored) the
+% \texttt{some_long} flag is set. The \texttt{some_short} flag is
+% used for expandable commands, to know whether to define a short
+% auxiliary too.
+% \begin{macrocode}
+\bool_new:N \l_@@_some_obey_spaces_bool
+\bool_new:N \l_@@_some_long_bool
+\bool_new:N \l_@@_some_short_bool
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_tmp_prop, \l_@@_tmpa_tl, \l_@@_tmpb_tl}
+% \begin{macro}{\@@_tmp:w}
+% Scratch space.
+% \begin{macrocode}
+\prop_new:N \l_@@_tmp_prop
+\tl_new:N \l_@@_tmpa_tl
+\tl_new:N \l_@@_tmpb_tl
+\cs_new_eq:NN \@@_tmp:w ?
+% \end{macrocode}
+% \end{macro}
+% \end{variable}
+%
+% With \pkg{xparse}, information about commands being (re)defined was
+% switched off by default, unless the |log-declarations| package
+% option was used, so here we'll switch that off as well.
+% \begin{macrocode}
+\msg_redirect_module:nnn { LaTeX / ltcmd } { info } { none }
+% \end{macrocode}
+%
+% \subsection{Declaring commands and environments}
+%
+% \begin{macro}{\@@_declare_cmd:Nnn, \@@_declare_expandable_cmd:Nnn}
+% \begin{macro}{\@@_declare_cmd_aux:Nnn}
+% \begin{macro}
+% {\@@_declare_cmd_internal:Nnnn, \@@_declare_cmd_internal:cnxn}
+% The main functions for creating commands set the appropriate flag then
+% use the same internal code to do the definition.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_declare_cmd:Nnn
+ {
+ \bool_set_false:N \l_@@_expandable_bool
+ \@@_declare_cmd_aux:Nnn
+ }
+\cs_new_protected:Npn \@@_declare_expandable_cmd:Nnn
+ {
+ \bool_set_true:N \l_@@_expandable_bool
+ \@@_declare_cmd_aux:Nnn
+ }
+% \end{macrocode}
+% The first stage is to log information, both for the user in the log and
+% for programmatic use in a property list of all declared commands.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_declare_cmd_aux:Nnn #1#2#3
+ {
+ \cs_if_exist:NTF #1
+ {
+ \__kernel_msg_info:nnxx { ltcmd } { redefine-command }
+ { \token_to_str:N #1 } { \tl_to_str:n {#2} }
+ }
+ {
+ \bool_lazy_or:nnT
+ { \cs_if_exist_p:c { \cs_to_str:N #1 ~ code } }
+ { \cs_if_exist_p:c { \cs_to_str:N #1 ~ defaults } }
+ {
+ \__kernel_msg_warning:nnx { ltcmd } { unsupported-let }
+ { \token_to_str:N #1 }
+ }
+ \__kernel_msg_info:nnxx { ltcmd } { define-command }
+ { \token_to_str:N #1 } { \tl_to_str:n {#2} }
+ }
+ \bool_set_false:N \l_@@_environment_bool
+ \@@_declare_cmd_internal:Nnnn #1 {#2} {#3} { }
+ }
+% \end{macrocode}
+% At definition time, the variable \cs{l_@@_fn_tl} is only used for error messages.
+% The real business of defining a document command starts with setting up
+% the appropriate name, then normalizing the argument specification to get rid of
+% shorthands.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_declare_cmd_internal:Nnnn #1#2#3#4
+ {
+ \tl_set:Nx \l_@@_function_tl { \cs_to_str:N #1 }
+ \tl_set:Nx \l_@@_fn_tl
+ { \exp_not:c { \l_@@_function_tl \c_space_tl } }
+ \@@_normalize_arg_spec:n {#2}
+ \exp_args:No \@@_prepare_signature:n \l_@@_arg_spec_tl
+ \@@_declare_cmd_code:Nnn #1 {#2} {#3}
+ #4
+ \@@_break_point:n {#2}
+ }
+\cs_generate_variant:Nn \@@_declare_cmd_internal:Nnnn { cnx }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_break_point:n}
+% A marker used to escape from creating a definition if necessary.
+% \begin{macrocode}
+\cs_new_eq:NN \@@_break_point:n \use_none:n
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_declare_cmd_code:Nnn}
+% \begin{macro}
+% {\@@_declare_cmd_code_aux:Nnn, \@@_declare_cmd_code_expandable:Nnn}
+% The appropriate auxiliary is called.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_declare_cmd_code:Nnn
+ {
+ \bool_if:NTF \l_@@_grab_expandably_bool
+ { \@@_declare_cmd_code_expandable:Nnn }
+ { \@@_declare_cmd_code_aux:Nnn }
+ }
+% \end{macrocode}
+% Standard functions call \cs{@@_start:nNNnnn}, which receives the
+% argument specification, an auxiliary used for
+% grabbing arguments, an auxiliary containing the code, and then the
+% signature, default arguments, and processors.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_declare_cmd_code_aux:Nnn #1#2#3
+ {
+ \cs_generate_from_arg_count:cNnn
+ { \l_@@_function_tl \c_space_tl code }
+ \cs_set_protected:Npn \l_@@_current_arg_int {#3}
+ \cs_set_protected_nopar:Npx #1
+ {
+ \bool_if:NTF \l_@@_environment_bool
+ {
+ \@@_start_env:nnnnn { \exp_not:n {#2} }
+ { \l_@@_environment_str }
+ }
+ {
+ \@@_start:nNNnnn { \exp_not:n {#2} }
+ \exp_not:c { \l_@@_function_tl \c_space_tl }
+ \exp_not:c { \l_@@_function_tl \c_space_tl code }
+ }
+ { \exp_not:o \l_@@_signature_tl }
+ {
+ \bool_if:NT \l_@@_defaults_bool
+ { \exp_not:o \l_@@_defaults_tl }
+ }
+ {
+ \bool_if:NT \l_@@_process_some_bool
+ { \exp_not:o \l_@@_process_all_tl }
+ }
+ }
+ }
+% \end{macrocode}
+% Expandable functions and functions whose arguments can be grabbed
+% expandably call \cs{@@_start_expandable:nNNNNn}, which receives the
+% argument specification, four auxiliaries (two for grabbing arguments, one for
+% the code, and one for default arguments), and finally the signature.
+% Non-expandable functions that take this branch should nevertheless
+% be protected, as well as their \texttt{code} function. They will
+% only be expanded in contexts such as constructing a csname.
+% The two grabbers (named after the function with one or two spaces)
+% are needed when there are both short and long arguments; otherwise
+% the same grabber is included twice in the definition. If all
+% arguments are long or all are short the (only) grabber is defined
+% correspondingly to be long/short. Otherwise two grabbers are
+% defined, one long, one short.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_declare_cmd_code_expandable:Nnn #1#2#3
+ {
+ \exp_args:Ncc \cs_generate_from_arg_count:NNnn
+ { \l_@@_function_tl \c_space_tl code }
+ { cs_set \bool_if:NF \l_@@_expandable_bool { _protected } :Npn }
+ \l_@@_current_arg_int {#3}
+ \bool_if:NT \l_@@_defaults_bool
+ {
+ \use:x
+ {
+ \cs_generate_from_arg_count:cNnn
+ { \l_@@_function_tl \c_space_tl defaults }
+ \cs_set:Npn \l_@@_current_arg_int
+ { \exp_not:o \l_@@_defaults_tl }
+ }
+ }
+ \bool_if:NTF \l_@@_expandable_bool
+ { \cs_set_nopar:Npx } { \cs_set_protected_nopar:Npx } #1
+ {
+ \exp_not:N \@@_start_expandable:nNNNNn
+ { \exp_not:n {#2} }
+ \exp_not:c { \l_@@_function_tl \c_space_tl }
+ \exp_not:c
+ {
+ \l_@@_function_tl \c_space_tl
+ \bool_if:NT \l_@@_some_short_bool
+ { \bool_if:NT \l_@@_some_long_bool { \c_space_tl } }
+ }
+ \exp_not:c { \l_@@_function_tl \c_space_tl code }
+ \bool_if:NTF \l_@@_defaults_bool
+ { \exp_not:c { \l_@@_function_tl \c_space_tl defaults } }
+ { ? }
+ { \exp_not:o \l_@@_signature_tl }
+ }
+ \bool_if:NTF \l_@@_some_long_bool
+ {
+ \bool_if:NT \l_@@_some_short_bool
+ {
+ \cs_set_nopar:cpx { \l_@@_function_tl \c_space_tl \c_space_tl }
+ ##1##2 { ##1 {##2} }
+ }
+ \cs_set:cpx
+ }
+ { \cs_set_nopar:cpx }
+ { \l_@@_function_tl \c_space_tl } ##1##2 { ##1 {##2} }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_declare_env:nnnn}
+% \begin{macro}{\@@_declare_env_internal:nnnn}
+% The lead-off to creating an environment is much the same as that for
+% creating a command: issue the appropriate message, store the argument
+% specification then hand off to an internal function.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_declare_env:nnnn #1#2
+ {
+ \str_set:Nx \l_@@_environment_str {#1}
+ \str_set:Nx \l_@@_environment_str
+ { \tl_trim_spaces:o { \l_@@_environment_str } }
+ \cs_if_exist:cTF { \l_@@_environment_str }
+ {
+ \__kernel_msg_info:nnxx { ltcmd } { redefine-environment }
+ { \l_@@_environment_str } { \tl_to_str:n {#2} }
+ }
+ {
+ \__kernel_msg_info:nnxx { ltcmd } { define-environment }
+ { \l_@@_environment_str } { \tl_to_str:n {#2} }
+ }
+ \bool_set_false:N \l_@@_expandable_bool
+ \bool_set_true:N \l_@@_environment_bool
+ \exp_args:NV \@@_declare_env_internal:nnnn
+ \l_@@_environment_str {#2}
+ }
+% \end{macrocode}
+% Creating a document environment requires a few more steps than creating
+% a single command. In order to pass the arguments of the command to the
+% end of the function, it is necessary to store the grabbed arguments.
+% To do that, the function used at the end of the environment has to be
+% redefined to contain the appropriate information. To minimize the amount
+% of expansion at point of use, the code here is expanded now as well as
+% when used.
+% The last argument of \cs{@@_declare_cmd_internal:Nnnn} is only run
+% if the definition succeeded. In package mode this ensures that the
+% original definition of the environment is not changed if the
+% definition fails for any reason. This also avoids an error when
+% defining the \verb*|end aux | function when the user asks for more
+% than $9$ arguments.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_declare_env_internal:nnnn #1#2#3#4
+ {
+ \@@_declare_cmd_internal:cnxn { environment~ #1 } {#2}
+ {
+ \cs_set_nopar:Npx \exp_not:c { environment~ #1 ~end~aux }
+ {
+ \exp_not:N \exp_not:N \exp_not:c { environment~ #1~end~aux~ }
+ \exp_not:n { \exp_not:o \l_@@_args_tl }
+ }
+ \exp_not:n {#3}
+ }
+ {
+ \cs_set_nopar:cpx { environment~ #1 ~end }
+ { \exp_not:c { environment~ #1 ~end~aux } }
+ \cs_generate_from_arg_count:cNnn
+ { environment~ #1 ~end~aux~ } \cs_set:Npn
+ \l_@@_current_arg_int {#4}
+ \cs_set_eq:cc {#1} { environment~ #1 }
+ \cs_set_eq:cc { end #1 } { environment~ #1 ~end }
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Structure of \pkg{xparse} commands}
+%
+% \begin{macro}{\@@_start_env:nnnnn, \@@_start:nNNnnn}
+% For error messages that occur during run-time when getting arguments
+% of environments it is necessary to keep track of the environment
+% name. We begin non-expandable commands with a token equal to
+% \cs{scan_stop:}, whose name gives a reasonable error message if the
+% command is used inside a csname and protects against
+% \texttt{f}-expansion. This is useless for environments since
+% \cs{begin} is already not expandable. Both the command and
+% environment codes start with \cs{group_align_safe_begin:}, then
+% \cs{@@_run_code:} (used by both) does \cs{group_align_safe_end:}, so
+% that delimited arguments may be grabbed in alignments if they
+% contain and alignment tab token (see latex3/latex3/issues/839).
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_start_env:nnnnn #1#2
+ {
+ \conditionally@traceoff
+ \group_align_safe_begin:
+ \str_set:Nn \l_@@_environment_str {#2}
+ \bool_set_true:N \l_@@_environment_bool
+ \@@_start_aux:ccnnnn
+ { environment~ \l_@@_environment_str \c_space_tl }
+ { environment~ \l_@@_environment_str \c_space_tl code }
+ {#1}
+ }
+\cs_new_protected:Npx \@@_start:nNNnnn #1#2#3
+ {
+ \exp_not:c { xparse~function~is~not~expandable }
+ \exp_not:N \conditionally@traceoff
+ \exp_not:N \group_align_safe_begin:
+ \exp_not:n { \bool_set_false:N \l_@@_environment_bool }
+ \exp_not:N \@@_start_aux:NNnnnn
+ #2 #3 {#1}
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_start_aux:NNnnnn, \@@_start_aux:ccnnnn}
+% This sets up a few variables to minimize the boilerplate code
+% included in all \pkg{xparse}-defined commands. It then runs the
+% grabbers~|#4|. Again, the argument specification |#1| is only for
+% diagnostics.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_start_aux:NNnnnn #1#2#3#4#5#6
+ {
+ \tl_clear:N \l_@@_args_tl
+ \tl_set:Nn \l_@@_fn_tl {#1}
+ \tl_set:Nn \l_@@_fn_code_tl {#2}
+ \tl_set:Nn \l_@@_defaults_tl {#5}
+ \tl_set:Nn \l_@@_process_all_tl {#6}
+ #4 \@@_run_code:
+ }
+\cs_generate_variant:Nn \@@_start_aux:NNnnnn { cc }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_run_code:}
+% After arguments are grabbed, this function is responsible for
+% inserting default values, running processors, and finally doing
+% \cs{group_align_safe_end:} as promised, and running the code.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_run_code:
+ {
+ \tl_if_empty:NF \l_@@_defaults_tl { \@@_defaults: }
+ \tl_if_empty:NF \l_@@_process_all_tl { \@@_args_process: }
+ \group_align_safe_end:
+ \conditionally@traceon
+ \exp_after:wN \l_@@_fn_code_tl \l_@@_args_tl
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_defaults:}
+% \begin{macro}{\@@_defaults_def:, \@@_defaults_def:nn, \@@_defaults_def:nnn}
+% \begin{macro}{\@@_defaults_aux:, \@@_defaults_error:w}
+% First construct \cs{@@_tmp:w} (see below) that will receive
+% the arguments found so far and determine default values for any
+% missing argument. Then call it repeatedly until the set of
+% arguments stabilizes. Since that could lead to an infinite loop we
+% only call it up to nine times, the maximal number needed for
+% stabilization if there is a chain of arguments that depend on each
+% other. If that fails to stabilize raise an error.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_defaults:
+ {
+ \@@_defaults_def:
+ \tl_set_eq:NN \l_@@_args_i_tl \l_@@_args_tl
+ \@@_defaults_aux: \@@_defaults_aux: \@@_defaults_aux:
+ \@@_defaults_aux: \@@_defaults_aux: \@@_defaults_aux:
+ \@@_defaults_aux: \@@_defaults_aux: \@@_defaults_aux:
+ \@@_defaults_error:w
+ \q_recursion_stop
+ \tl_set_eq:NN \l_@@_args_tl \l_@@_args_i_tl
+ }
+\cs_new_protected:Npn \@@_defaults_aux:
+ {
+ \tl_set:Nx \l_@@_args_ii_tl
+ { \exp_after:wN \@@_tmp:w \l_@@_args_i_tl }
+ \tl_if_eq:NNT \l_@@_args_ii_tl \l_@@_args_i_tl
+ { \use_none_delimit_by_q_recursion_stop:w }
+ \tl_set_eq:NN \l_@@_args_i_tl \l_@@_args_ii_tl
+ }
+\cs_new_protected:Npn \@@_defaults_error:w \q_recursion_stop
+ {
+ \__kernel_msg_error:nnx { ltcmd } { loop-in-defaults }
+ { \@@_environment_or_command: }
+ }
+% \end{macrocode}
+% To construct \cs{@@_tmp:w}, first go through the arguments
+% found and the corresponding defaults, building a token list with
+% |{#|\meta{arg number}|}| for arguments found in the input (whose
+% default will not be used) and otherwise
+% |{|\cs{exp_not:n}\Arg{default}|}| for arguments whose default will
+% be used.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_defaults_def:
+ {
+ \tl_clear:N \l_@@_tmpa_tl
+ \int_zero:N \l_@@_current_arg_int
+ \@@_tl_mapthread_function:NNN \l_@@_args_tl \l_@@_defaults_tl
+ \@@_defaults_def:nn
+ \cs_generate_from_arg_count:NNVo \@@_tmp:w \cs_set:Npn
+ \l_@@_current_arg_int \l_@@_tmpa_tl
+ }
+\cs_generate_variant:Nn \cs_generate_from_arg_count:NNnn { NNVo }
+\cs_new_protected:Npn \@@_defaults_def:nn
+ {
+ \int_incr:N \l_@@_current_arg_int
+ \exp_args:NV \@@_defaults_def:nnn \l_@@_current_arg_int
+ }
+\cs_new_protected:Npn \@@_defaults_def:nnn #1#2#3
+ {
+ \tl_put_right:Nx \l_@@_tmpa_tl
+ {
+ {
+ \exp_not:N \exp_not:n
+ {
+ \tl_if_novalue:nTF {#2}
+ { \exp_not:o {#3} }
+ { \exp_not:n { ## #1 } }
+ }
+ }
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_args_process:}
+% \begin{macro}{\@@_args_process_loop:nn, \@@_args_process_aux:n}
+% Loop through arguments (stored in \cs{l_@@_args_tl}) and the
+% corresponding processors (in \cs{l_@@_process_all_tl})
+% simultaneously, apply all processors for each argument and store the
+% result back into \cs{l_@@_args_tl}. To allow processors to depend
+% on other arguments, for every processor define a temporary auxiliary
+% that receives all arguments \cs{l_@@_args_tl}.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_args_process:
+ {
+ \tl_clear:N \l_@@_args_ii_tl
+ \@@_tl_mapthread_function:NNN
+ \l_@@_args_tl
+ \l_@@_process_all_tl
+ \@@_args_process_loop:nn
+ \tl_set_eq:NN \l_@@_args_tl \l_@@_args_ii_tl
+ }
+\cs_new_protected:Npn \@@_args_process_loop:nn #1#2
+ {
+ \tl_set:Nn \ProcessedArgument {#1}
+ \tl_if_novalue:nF {#1}
+ { \tl_map_function:nN {#2} \@@_args_process_aux:n }
+ \tl_put_right:No \l_@@_args_ii_tl
+ { \exp_after:wN { \ProcessedArgument } }
+ }
+\cs_new_protected:Npn \@@_args_process_aux:n #1
+ {
+ \cs_generate_from_arg_count:NNnn \@@_tmp:w \cs_set:Npn
+ { \tl_count:N \l_@@_args_tl } {#1}
+ \exp_args:NNNo \exp_after:wN \@@_tmp:w \l_@@_args_tl
+ { \ProcessedArgument }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}[EXP]{\@@_start_expandable:nNNNNn}
+% This is called for all expandable commands. |#6| is the signature,
+% responsible for grabbing arguments. |#5| is used to determine
+% default values (or is |?| if there are none). |#4| is the code to run.
+% |#2|~and~|#3| are functions (named after the command) that grab a single
+% argument in the input stream (|#3|~is~short). The argument specification |#1| is
+% only used by diagnostic functions. Same as for the non-expandable
+% version, this starts with \cs{group_align_safe_begin:}, which
+% expands to nothing, so may be safely used in an expandable context.
+% \begin{macrocode}
+\cs_new:Npn \@@_start_expandable:nNNNNn #1#2#3#4#5#6
+ {
+ \group_align_safe_begin:
+ #6 \@@_end_expandable:NNw #5 #4 \q_@@ #2#3
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[EXP]{\@@_end_expandable:NNw}
+% \begin{macro}[EXP]{\@@_end_expandable_aux:w}
+% \begin{macro}[EXP]{\@@_end_expandable_aux:nNNNN}
+% \begin{macro}[EXP]{\@@_end_expandable_defaults:nnnNNn}
+% \begin{macro}[EXP]{\@@_end_expandable_defaults:nnw}
+% \begin{macro}[EXP]{\@@_end_expandable_defaults:nw}
+% Followed by a function |#1| to determine default values (or |?| if
+% there are no defaults), the code
+% |#2|, arguments that have been grabbed, then \cs{q_@@} and two generic
+% grabbers. The idea to find default values is similar to the
+% non-expandable case but we cannot define an auxiliary function, so
+% at every step in the loop we need to go through all arguments
+% searching for which ones started out as |-NoValue-| and replacing
+% these by the newly computed values. In fact we need to keep track
+% of three versions of all arguments: the original version, the
+% previous version with default values, and the currently built
+% version (first argument of \cs{@@_end_expandable_defaults:nnnNNn}).
+% \begin{macrocode}
+\cs_new:Npn \@@_end_expandable:NNw #1#2
+ { \@@_end_expandable_aux:w #1#2 \prg_do_nothing: }
+\cs_new:Npn \@@_end_expandable_aux:w #1#2#3 \q_@@
+ { \exp_args:No \@@_end_expandable_aux:nNNNN {#3} #1 #2 }
+\cs_new:Npn \@@_end_expandable_aux:nNNNN #1#2#3#4#5
+ {
+ \token_if_eq_charcode:NNT ? #2 { \exp_after:wN \use_iv:nnnn }
+ \@@_end_expandable_defaults:nnnNNn {#1} { } {#1} #2#3
+ { } { } { } { } { } { } { } { } { } { }
+ {
+ \__kernel_msg_expandable_error:nnf
+ { ltcmd } { loop-in-defaults }
+ { \exp_args:Nf \tl_trim_spaces:n { \token_to_str:N #4 } }
+ \use_iv:nnnn
+ }
+ \q_stop
+ }
+\cs_new:Npn \@@_end_expandable_defaults:nnnNNn #1#2#3#4#5#6
+ {
+ #6
+ \str_if_eq:nnTF {#1} {#2}
+ { \use_i_delimit_by_q_stop:nw { \group_align_safe_end: #5 #1 } }
+ {
+ \exp_args:No \@@_tl_mapthread_function:nnN
+ { #4 #1 } {#3}
+ \@@_end_expandable_defaults:nnw
+ \@@_end_expandable_defaults:nnnNNn { } {#1} {#3} #4 #5
+ }
+ }
+\cs_new:Npn \@@_end_expandable_defaults:nnw #1#2
+ {
+ \tl_if_novalue:nTF {#2}
+ { \exp_args:No \@@_end_expandable_defaults:nw {#1} }
+ { \@@_end_expandable_defaults:nw {#2} }
+ }
+\cs_new:Npn \@@_end_expandable_defaults:nw
+ #1#2 \@@_end_expandable_defaults:nnnNNn #3
+ { #2 \@@_end_expandable_defaults:nnnNNn { #3 {#1} } }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Normalizing the argument specifications}
+%
+% The goal here is to expand aliases and check that the argument
+% specification is valid before the main parsing run. If it is not
+% valid the entire set up is abandoned to avoid any strange internal
+% errors. A function is provided for each argument type that will grab
+% any extra data items and call the loop function after performing the
+% following checks and tasks.
+% \begin{itemize}
+% \item Check that each argument has the correct number of data items
+% associated with it, and that where a single character is required,
+% one has actually been supplied.
+% \item Check that processors and the markers~|+| and~|!| are followed
+% by an argument for which they make sense, and are not redundant.
+% \item Check the absence of forbidden types for expandable commands,
+% namely \texttt{G}/\texttt{v} always, and \texttt{l}/\texttt{u}
+% after optional arguments (\pkg{xparse} may have inserted braces
+% due to a failed search for an optional argument).
+% \item Check that no optional argument is followed by a mandatory
+% argument with the same delimiter, as otherwise the optional
+% argument could never be omitted.
+% \item Keep track in \cs{l_@@_some_long_bool} and
+% \cs{l_@@_some_short_bool} of whether the command has some
+% long/short arguments.
+% \item Keep track in \cs{l_@@_grab_expandably_bool} of whether all
+% arguments are \texttt{m}/\texttt{l}/\texttt{u} type and short
+% arguments appear before long ones, in which case they can be
+% grabbed expandably just as safely as they could be grabbed
+% nonexpandably. Regardless of that, arguments of expandable
+% commands will be grabbed expandably and arguments of environments
+% will not (because the list of arguments built by non-expandable
+% grabbing is used to pass them to the end-environment code).
+% \end{itemize}
+% Further checks happen at the end of the loop:
+% \begin{itemize}
+% \item that there are at most $9$ arguments;
+% \item that an expandable command does not end with an optional
+% argument (this case is detected by using the fact that
+% \cs{l_@@_last_delimiters_tl} is cleared by every mandatory argument
+% and filled by every optional argument).
+% \end{itemize}
+%
+% \begin{macro}{\@@_normalize_arg_spec:n}
+% \begin{macro}{\@@_normalize_arg_spec_loop:n}
+% Loop through the argument specification, calling an auxiliary
+% specific to each argument type. If any argument is unknown stop the
+% definition.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_normalize_arg_spec:n #1
+ {
+ \int_zero:N \l_@@_current_arg_int
+ \tl_clear:N \l_@@_last_delimiters_tl
+ \tl_clear:N \l_@@_arg_spec_tl
+ \bool_set_true:N \l_@@_grab_expandably_bool
+ \bool_set_false:N \l_@@_obey_spaces_bool
+ \bool_set_false:N \l_@@_long_bool
+ \bool_set_false:N \l_@@_some_obey_spaces_bool
+ \bool_set_false:N \l_@@_some_long_bool
+ \bool_set_false:N \l_@@_some_short_bool
+ \@@_normalize_arg_spec_loop:n #1
+ \q_recursion_tail \q_recursion_tail \q_recursion_tail \q_recursion_stop
+ \int_compare:nNnT \l_@@_current_arg_int > 9
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { too-many-arguments }
+ { \@@_environment_or_command: } { \tl_to_str:n {#1} }
+ \@@_bad_def:wn
+ }
+ \bool_if:NT \l_@@_expandable_bool
+ {
+ \tl_if_empty:NF \l_@@_last_delimiters_tl
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { expandable-ending-optional }
+ { \iow_char:N \\ \l_@@_function_tl } { \tl_to_str:n {#1} }
+ \@@_bad_def:wn
+ }
+ }
+ \bool_if:NT \l_@@_expandable_bool
+ { \bool_set_true:N \l_@@_grab_expandably_bool }
+ \bool_if:NT \l_@@_environment_bool
+ { \bool_set_false:N \l_@@_grab_expandably_bool }
+ }
+\cs_new_protected:Npn \@@_normalize_arg_spec_loop:n #1
+ {
+ \quark_if_recursion_tail_stop:n {#1}
+ \int_incr:N \l_@@_current_arg_int
+ \cs_if_exist_use:cF { @@_normalize_type_ \tl_to_str:n {#1} :w }
+ {
+ \bool_lazy_any:nTF
+ {
+ { \str_if_eq_p:nn {#1} { G } }
+ { \str_if_eq_p:nn {#1} { g } }
+ { \str_if_eq_p:nn {#1} { l } }
+ { \str_if_eq_p:nn {#1} { u } }
+ }
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { xparse-argument-type }
+ { \@@_environment_or_command: } { \tl_to_str:n {#1} }
+ }
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { unknown-argument-type }
+ { \@@_environment_or_command: } { \tl_to_str:n {#1} }
+ }
+ \@@_bad_def:wn
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}
+% {
+% \@@_normalize_type_d:w,
+% \@@_normalize_type_e:w,
+% \@@_normalize_type_o:w,
+% \@@_normalize_type_O:w,
+% \@@_normalize_type_r:w,
+% \@@_normalize_type_s:w,
+% }
+% These argument types are aliases of more general ones, for example
+% with the default argument |-NoValue-|. To easily insert that marker
+% expanded in the definitions we call \cs{@@_tmp:w} with the argument
+% |-NoValue-|. For argument types that need additional data, check
+% that the data is present (not \cs{q_recursion_tail}) before
+% proceeding.
+% \begin{macrocode}
+\cs_set_protected:Npn \@@_tmp:w #1
+ {
+ \cs_new_protected:Npn \@@_normalize_type_d:w ##1##2
+ {
+ \quark_if_recursion_tail_stop_do:nn {##2} { \@@_bad_arg_spec:wn }
+ \@@_normalize_type_D:w {##1} {##2} {#1}
+ }
+ \cs_new_protected:Npn \@@_normalize_type_e:w ##1
+ {
+ \quark_if_recursion_tail_stop_do:nn {##1} { \@@_bad_arg_spec:wn }
+ \@@_normalize_type_E:w {##1} { }
+ }
+ \cs_new_protected:Npn \@@_normalize_type_o:w
+ { \@@_normalize_type_D:w [ ] {#1} }
+ \cs_new_protected:Npn \@@_normalize_type_O:w
+ { \@@_normalize_type_D:w [ ] }
+ \cs_new_protected:Npn \@@_normalize_type_r:w ##1##2
+ {
+ \quark_if_recursion_tail_stop_do:nn {##2} { \@@_bad_arg_spec:wn }
+ \@@_normalize_type_R:w {##1} {##2} {#1}
+ }
+ \cs_new_protected:Npn \@@_normalize_type_s:w
+ { \@@_normalize_type_t:w * }
+ }
+\exp_args:No \@@_tmp:w { \c_novalue_tl }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}
+% {
+% \@@_normalize_type_>:w,
+% \@@_normalize_type_+:w,
+% \@@_normalize_type_!:w,
+% }
+% Check that these prefixes have arguments, namely that the next token
+% is not \cs{q_recursion_tail}, and remember to leave it after the
+% looping macro. Processors are forbidden in expandable commands.
+% If all is good, store the prefix in the cleaned up
+% \cs{l_@@_arg_spec_tl}, and decrement the argument number as prefixes
+% do not correspond to arguments.
+% \begin{macrocode}
+\cs_new_protected:cpn { @@_normalize_type_>:w } #1#2
+ {
+ \quark_if_recursion_tail_stop_do:nn {#2} { \@@_bad_arg_spec:wn }
+ \bool_if:NT \l_@@_expandable_bool
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { processor-in-expandable }
+ { \iow_char:N \\ \l_@@_function_tl } { \tl_to_str:n {#1} }
+ \@@_bad_def:wn
+ }
+ \tl_put_right:Nx \l_@@_arg_spec_tl { > { \tl_trim_spaces:n {#1} } }
+ \int_decr:N \l_@@_current_arg_int
+ \bool_set_false:N \l_@@_grab_expandably_bool
+ \@@_normalize_arg_spec_loop:n {#2}
+ }
+\cs_new_protected:cpn { @@_normalize_type_+:w } #1
+ {
+ \quark_if_recursion_tail_stop_do:nn {#1} { \@@_bad_arg_spec:wn }
+ \bool_if:NT \l_@@_long_bool
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { two-markers }
+ { \@@_environment_or_command: } { + }
+ \@@_bad_def:wn
+ }
+ \bool_set_true:N \l_@@_long_bool
+ \int_decr:N \l_@@_current_arg_int
+ \@@_normalize_arg_spec_loop:n {#1}
+ }
+\cs_new_protected:cpn { @@_normalize_type_!:w } #1
+ {
+ \quark_if_recursion_tail_stop_do:nn {#1} { \@@_bad_arg_spec:wn }
+ \bool_if:NT \l_@@_obey_spaces_bool
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { two-markers }
+ { \@@_environment_or_command: } { ! }
+ \@@_bad_def:wn
+ }
+ \bool_set_true:N \l_@@_obey_spaces_bool
+ \bool_set_true:N \l_@@_some_obey_spaces_bool
+ \int_decr:N \l_@@_current_arg_int
+ \@@_normalize_arg_spec_loop:n {#1}
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}
+% {
+% \@@_normalize_type_D:w,
+% \@@_normalize_type_E:w,
+% \@@_normalize_type_t:w,
+% }
+% \begin{macro}{\@@_normalize_E_unique_check:w}
+% Optional argument types. Check that all required data is present
+% (and consists of single characters if applicable) and check for
+% forbidden types for expandable commands. For \texttt{E}-type
+% require that there is at least one embellishment, that each one is a
+% single character, and that there aren't more optional arguments than
+% embellishments; also remember that each embellishment counts as one
+% argument for \cs{l_@@_current_arg_int}. Then in each case
+% store the data in \cs{l_@@_arg_spec_tl}, and
+% for later checks store in \cs{l_@@_last_delimiters_tl} the tokens
+% whose presence determines whether there is an optional argument (for
+% braces store |{}|, seen later as an empty delimiter).
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_normalize_type_D:w #1#2#3
+ {
+ \quark_if_recursion_tail_stop_do:nn {#3} { \@@_bad_arg_spec:wn }
+ \@@_single_token_check:n {#1} \@@_allowed_token_check:N #1
+ \@@_single_token_check:n {#2}
+ \@@_add_arg_spec:n { D #1 #2 {#3} }
+ \tl_put_right:Nn \l_@@_last_delimiters_tl {#1}
+ \bool_set_false:N \l_@@_grab_expandably_bool
+ \@@_normalize_arg_spec_loop:n
+ }
+\cs_new_protected:Npn \@@_normalize_type_E:w #1#2
+ {
+ \quark_if_recursion_tail_stop_do:nn {#2} { \@@_bad_arg_spec:wn }
+ \tl_if_blank:nT {#1} { \@@_bad_arg_spec:wn }
+ \tl_map_function:nN {#1} \@@_single_token_check:n
+ \tl_map_function:nN {#1} \@@_allowed_token_check:N
+ \@@_normalize_E_unique_check:w #1 \q_nil \q_stop
+ \int_compare:nNnT { \tl_count:n {#2} } > { \tl_count:n {#1} }
+ { \@@_bad_arg_spec:wn }
+ \@@_add_arg_spec:n { E {#1} {#2} }
+ \tl_put_right:Nn \l_@@_last_delimiters_tl {#1}
+ \bool_set_false:N \l_@@_grab_expandably_bool
+ \int_add:Nn \l_@@_current_arg_int { \tl_count:n {#1} - 1 }
+ \@@_normalize_arg_spec_loop:n
+ }
+\cs_new_protected:Npn \@@_normalize_E_unique_check:w #1#2 \q_stop
+ {
+ \quark_if_nil:NF #1
+ {
+ \tl_if_in:nnT {#2} {#1} { \@@_bad_arg_spec:wn }
+ \@@_normalize_E_unique_check:w #2 \q_stop
+ }
+ }
+\cs_new_protected:Npn \@@_normalize_type_t:w #1
+ {
+ \quark_if_recursion_tail_stop_do:Nn #1 { \@@_bad_arg_spec:wn }
+ \@@_single_token_check:n {#1} \@@_allowed_token_check:N #1
+ \tl_put_right:Nx \l_@@_arg_spec_tl
+ {
+ \bool_if:NT \l_@@_obey_spaces_bool { ! }
+ t \exp_not:n {#1}
+ }
+ \tl_put_right:Nn \l_@@_last_delimiters_tl {#1}
+ \bool_set_false:N \l_@@_grab_expandably_bool
+ \bool_set_false:N \l_@@_obey_spaces_bool
+ \bool_set_false:N \l_@@_long_bool
+ \@@_normalize_arg_spec_loop:n
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}
+% {
+% \@@_normalize_type_m:w,
+% \@@_normalize_type_R:w,
+% \@@_normalize_type_v:w
+% }
+% Mandatory arguments. First check the required data is present,
+% consists of single characters where applicable, and that the argument
+% type is allowed for expandable commands if applicable. For the
+% \texttt{m} and \texttt{R} argument types check that they do not
+% follow some optional argument with that delimiter as otherwise the
+% optional argument could not be omitted. Then save data in
+% \cs{l_@@_arg_spec_tl}, count the mandatory argument, and empty the
+% list of last delimiters.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_normalize_type_m:w
+ {
+ \@@_delimiter_check:nnn { } { m } { \iow_char:N \{ }
+ \@@_add_arg_spec_mandatory:n { m }
+ \@@_normalize_arg_spec_loop:n
+ }
+\cs_new_protected:Npn \@@_normalize_type_R:w #1#2#3
+ {
+ \quark_if_recursion_tail_stop_do:nn {#3} { \@@_bad_arg_spec:wn }
+ \@@_single_token_check:n {#1} \@@_allowed_token_check:N #1
+ \@@_single_token_check:n {#2}
+ \@@_delimiter_check:nnn {#1} { R/r } { \tl_to_str:n {#1} }
+ \bool_set_false:N \l_@@_grab_expandably_bool
+ \@@_add_arg_spec_mandatory:n { R #1 #2 {#3} }
+ \@@_normalize_arg_spec_loop:n
+ }
+\cs_new_protected:Npn \@@_normalize_type_v:w
+ {
+ \@@_normalize_check_gv:N v
+ \@@_add_arg_spec_mandatory:n { v }
+ \@@_normalize_arg_spec_loop:n
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_normalize_type_b:w}
+% This argument type is not allowed for commands. This is only
+% allowed at the end of the argument specification, hence we check
+% that |#1| is the end.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_normalize_type_b:w #1
+ {
+ \bool_if:NF \l_@@_environment_bool
+ {
+ \__kernel_msg_error:nnxx
+ { ltcmd } { invalid-command-arg }
+ { \@@_environment_or_command: } { b }
+ \@@_bad_def:wn
+ }
+ \tl_clear:N \l_@@_last_delimiters_tl
+ \@@_add_arg_spec:n { b }
+ \quark_if_recursion_tail_stop:n {#1}
+ \__kernel_msg_error:nnxx { ltcmd } { arg-after-body }
+ { \@@_environment_or_command: }
+ { \tl_to_str:n {#1} }
+ \@@_bad_def:wn
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_single_token_check:n}
+% Checks that the argument is a single (non-space) token (possibly
+% surrounded by spaces), and aborts the definition otherwise.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_single_token_check:n #1
+ {
+ \tl_trim_spaces_apply:nN {#1} \tl_if_single_token:nF
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { not-single-token }
+ { \@@_environment_or_command: } { \tl_to_str:n {#1} }
+ \@@_bad_def:wn
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_allowed_token_check:N}
+% Some tokens are now allowed as delimiters for some argument types,
+% notably implicit begin/end-group tokens (|\bgroup|/|\egroup|).
+% The major problem with these tokens is that for |\peek_...| functions,
+% a literal~|{|$_1$. is virtually indistinguishable from a |\bgroup| or
+% other token which was |\let| to a~|{|$_1$, and the same goes
+% for~|}|$_2$. All other tokens can be easily distingushed from their
+% implicit counterparts by grabbing them and looking at the string
+% length (see \cs{@@_token_if_cs:NTF}), but for begin/end group tokens
+% that is not possible without the risk of mistakenly grabbing the
+% entire brace group (potentially leading to a~\texttt{!~Runaway argument}
+% error) or trying to grab a |}|$_2$, leading to
+% an~\verb|! Argument of \dots has an extra }| error.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_allowed_token_check:N #1
+ {
+ \token_if_eq_meaning:NNTF #1 \c_group_begin_token
+ { \use:n }
+ {
+ \token_if_eq_meaning:NNTF #1 \c_group_end_token
+ { \use:n }
+ { \use_none:n }
+ }
+ {
+ \__kernel_msg_error:nnxxx
+ { ltcmd } { forbidden-implicit-group-token }
+ { \@@_environment_or_command: } { \tl_to_str:n {#1} }
+ {
+ \token_if_eq_meaning:NNTF #1 \c_group_begin_token
+ { begin } { end }
+ }
+ \@@_bad_def:wn
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_normalize_check_gv:N, \@@_normalize_check_lu:N}
+% Called for arguments that are always forbidden, or forbidden after
+% an optional argument, for expandable commands.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_normalize_check_gv:N #1
+ {
+ \bool_if:NT \l_@@_expandable_bool
+ {
+ \__kernel_msg_error:nnxx
+ { ltcmd } { invalid-expandable-argument-type }
+ { \iow_char:N \\ \l_@@_function_tl } { \tl_to_str:n {#1} }
+ \@@_bad_def:wn
+ }
+ \bool_set_false:N \l_@@_grab_expandably_bool
+ }
+\cs_new_protected:Npn \@@_normalize_check_lu:N #1
+ {
+ \bool_if:NT \l_@@_expandable_bool
+ {
+ \tl_if_empty:NF \l_@@_last_delimiters_tl
+ {
+ \__kernel_msg_error:nnxx
+ { ltcmd } { invalid-after-optional-expandably }
+ { \iow_char:N \\ \l_@@_function_tl } { \tl_to_str:n {#1} }
+ \@@_bad_def:wn
+ }
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_delimiter_check:nnn}
+% Called for \texttt{m} and \texttt{R} arguments. Checks that the
+% leading token does not coincide with the token denoting the presence
+% of a previous optional argument. Instead of dealing with braces for
+% the \texttt{m}-type we use an empty delimiter to denote that case.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_delimiter_check:nnn #1#2#3
+ {
+ \tl_map_inline:Nn \l_@@_last_delimiters_tl
+ {
+ \tl_if_eq:nnT {##1} {#1}
+ {
+ \__kernel_msg_warning:nnxx { ltcmd } { optional-mandatory }
+ {#2} {#3}
+ }
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_bad_arg_spec:wn, \@@_bad_def:wn}
+% If the argument specification is wrong, this provides an escape from
+% the entire definition process.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_bad_arg_spec:wn #1 \@@_break_point:n #2
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { bad-arg-spec }
+ { \@@_environment_or_command: } { \tl_to_str:n {#2} }
+ }
+\cs_new_protected:Npn \@@_bad_def:wn #1 \@@_break_point:n #2 { }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_arg_spec:n, \@@_add_arg_spec_mandatory:n}
+% When adding an argument to the argument specification, set the
+% \texttt{some_long} or \texttt{some_short} booleans as appropriate
+% and clear the booleans keeping track of |+| and |!| markers.
+% Before that, test for a short argument following some long
+% arguments: this is forbidden for expandable commands and prevents
+% grabbing arguments expandably.
+%
+% For mandatory arguments do some more work, in particular complain if
+% they were preceeded by~|!|.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_arg_spec:n #1
+ {
+ \bool_lazy_and:nnT
+ { ! \l_@@_long_bool }
+ { \l_@@_some_long_bool }
+ {
+ \bool_if:NT \l_@@_expandable_bool
+ {
+ \__kernel_msg_error:nnx { ltcmd } { inconsistent-long }
+ { \iow_char:N \\ \l_@@_function_tl }
+ \@@_bad_def:wn
+ }
+ \bool_set_false:N \l_@@_grab_expandably_bool
+ }
+ \bool_if:NTF \l_@@_long_bool
+ { \bool_set_true:N \l_@@_some_long_bool }
+ { \bool_set_true:N \l_@@_some_short_bool }
+ \tl_put_right:Nx \l_@@_arg_spec_tl
+ {
+ \bool_if:NT \l_@@_long_bool { + }
+ \bool_if:NT \l_@@_obey_spaces_bool { ! }
+ \exp_not:n {#1}
+ }
+ \bool_set_false:N \l_@@_long_bool
+ \bool_set_false:N \l_@@_obey_spaces_bool
+ }
+\cs_new_protected:Npn \@@_add_arg_spec_mandatory:n #1
+ {
+ \bool_if:NT \l_@@_some_obey_spaces_bool
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { non-trailing-obey-spaces }
+ { \@@_environment_or_command: } { \tl_to_str:n {#1} }
+ \@@_bad_def:wn
+ }
+ \tl_clear:N \l_@@_last_delimiters_tl
+ \@@_add_arg_spec:n {#1}
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \subsection{Preparing the signature: general mechanism}
+%
+% \begin{macro}{\@@_prepare_signature:n}
+% \begin{macro}{\@@_prepare_signature:N}
+% \begin{macro}{\@@_prepare_signature_bypass:N}
+% Actually creating the signature uses the same loop approach as
+% normalizing the signature. There are first a number of variables which need
+% to be set to track what is going on. Many of these variables are unused
+% when defining expandable commands.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_prepare_signature:n #1
+ {
+ \int_zero:N \l_@@_current_arg_int
+ \bool_set_false:N \l_@@_long_bool
+ \bool_set_false:N \l_@@_obey_spaces_bool
+ \int_zero:N \l_@@_m_args_int
+ \bool_set_false:N \l_@@_defaults_bool
+ \tl_clear:N \l_@@_defaults_tl
+ \tl_clear:N \l_@@_process_all_tl
+ \tl_clear:N \l_@@_process_one_tl
+ \bool_set_false:N \l_@@_process_some_bool
+ \tl_clear:N \l_@@_signature_tl
+ \@@_prepare_signature:N #1 \q_recursion_tail \q_recursion_stop
+ \bool_if:NF \l_@@_expandable_bool { \@@_flush_m_args: }
+ }
+% \end{macrocode}
+% The main looping function does not take an argument, but carries out the
+% reset on the processor boolean. This is split off from the rest of the
+% process so that when actually setting up processors the flag-reset can
+% be bypassed.
+%
+% For each known argument type there is an appropriate function to actually
+% do the addition to the signature. These are separate for expandable and
+% standard functions, as the approaches are different.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_prepare_signature:N
+ {
+ \bool_set_false:N \l_@@_prefixed_bool
+ \@@_prepare_signature_bypass:N
+ }
+\cs_new_protected:Npn \@@_prepare_signature_bypass:N #1
+ {
+ \quark_if_recursion_tail_stop:N #1
+ \use:c
+ {
+ @@_add
+ \bool_if:NT \l_@@_grab_expandably_bool { _expandable }
+ _type_ \token_to_str:N #1 :w
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Setting up a standard signature}
+%
+% Each argument-adding function appends to the signature a grabber (and
+% for some types, the delimiters or default value), except the one for
+% \texttt{m} arguments. These are collected and added to the signature
+% all at once by \cs{@@_flush_m_args:}, called for every other argument
+% type. All of the functions then call the loop function
+% \cs{@@_prepare_signature:N}. Default values of arguments are
+% collected by \cs{@@_add_default:n} rather than being stored with the
+% argument; this function and \cs{@@_add_default:} are also responsible
+% for keeping track of \cs{l_@@_current_arg_int}.
+%
+% \begin{macro}{\@@_add_type_+:w}
+% Making the next argument long means setting the flag. The \texttt{m}
+% arguments are recorded here as
+% this has to be done for every case where there is then a long argument.
+% \begin{macrocode}
+\cs_new_protected:cpn { @@_add_type_+:w }
+ {
+ \@@_flush_m_args:
+ \bool_set_true:N \l_@@_long_bool
+ \bool_set_true:N \l_@@_prefixed_bool
+ \@@_prepare_signature_bypass:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_type_!:w}
+% Much the same for controlling trailing optional arguments.
+% \begin{macrocode}
+\cs_new_protected:cpn { @@_add_type_!:w }
+ {
+ \@@_flush_m_args:
+ \bool_set_true:N \l_@@_obey_spaces_bool
+ \bool_set_true:N \l_@@_prefixed_bool
+ \@@_prepare_signature_bypass:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_type_>:w}
+% When a processor is found, the processor code is stored. It will be
+% used by \cs{@@_args_process:} once arguments are all found. Here too
+% the loop calls \cs{@@_prepare_signature_bypass:N} rather than
+% \cs{@@_prepare_signature:N} so that the flag is not reset.
+% \begin{macrocode}
+\cs_new_protected:cpn { @@_add_type_>:w } #1
+ {
+ \@@_flush_m_args:
+ \bool_set_true:N \l_@@_prefixed_bool
+ \bool_set_true:N \l_@@_process_some_bool
+ \tl_put_left:Nn \l_@@_process_one_tl { {#1} }
+ \@@_prepare_signature_bypass:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_type_b:w}
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_type_b:w
+ {
+ \@@_flush_m_args:
+ \@@_add_default:
+ \@@_add_grabber:N b
+ \@@_prepare_signature:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_type_D:w}
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_type_D:w #1#2#3
+ {
+ \@@_flush_m_args:
+ \@@_add_default:n {#3}
+ \@@_add_grabber:N D
+ \tl_put_right:Nn \l_@@_signature_tl { #1 #2 }
+ \@@_prepare_signature:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_type_E:w}
+% The \texttt{E}-type argument needs a special handling of default
+% values.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_type_E:w #1#2
+ {
+ \@@_flush_m_args:
+ \@@_add_default_E:nn {#1} {#2}
+ \@@_add_grabber:N E
+ \tl_put_right:Nn \l_@@_signature_tl { {#1} }
+ \@@_prepare_signature:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_type_m:w}
+% The \texttt{m} type is special as short arguments which are not
+% post-processed are simply counted at this stage. Thus there is a check
+% to see if either of these cases apply. If so, a one-argument grabber
+% is added to the signature. On the other hand, if a standard short
+% argument is required it is simply counted at this stage, to be
+% added later using \cs{@@_flush_m_args:}.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_type_m:w
+ {
+ \@@_add_default:
+ \bool_if:NTF \l_@@_prefixed_bool
+ { \@@_add_grabber:N m }
+ { \int_incr:N \l_@@_m_args_int }
+ \@@_prepare_signature:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_type_R:w}
+% The \texttt{R}-type argument is very similar to the \texttt{D}-type.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_type_R:w #1#2#3
+ {
+ \@@_flush_m_args:
+ \@@_add_default:n {#3}
+ \@@_add_grabber:N R
+ \tl_put_right:Nn \l_@@_signature_tl { #1 #2 }
+ \@@_prepare_signature:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_type_t:w}
+% Setting up a \texttt{t} argument means collecting one token for the test,
+% and adding it along with the grabber to the signature.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_type_t:w #1
+ {
+ \@@_flush_m_args:
+ \@@_add_default:
+ \@@_add_grabber:N t
+ \tl_put_right:Nn \l_@@_signature_tl {#1}
+ \@@_prepare_signature:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_type_v:w}
+% At this stage, the \texttt{v} argument is identical to \texttt{l}
+% except that since the grabber may fail to read a verbatim argument
+% we need a default value.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_type_v:w
+ {
+ \@@_flush_m_args:
+ \exp_args:No \@@_add_default:n \c_novalue_tl
+ \@@_add_grabber:N v
+ \@@_prepare_signature:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_flush_m_args:}
+% As \texttt{m} arguments are simply counted, there is a need to add
+% them to the token register in a block. As this function can only
+% be called if something other than \texttt{m} turns up, the flag can
+% be switched here.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_flush_m_args:
+ {
+ \int_compare:nNnT \l_@@_m_args_int > 0
+ {
+ \tl_put_right:Nx \l_@@_signature_tl
+ { \exp_not:c { @@_grab_m_ \int_use:N \l_@@_m_args_int :w } }
+ \tl_put_right:Nx \l_@@_process_all_tl
+ { \prg_replicate:nn { \l_@@_m_args_int } { { } } }
+ }
+ \int_zero:N \l_@@_m_args_int
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_grabber:N}
+% To keep the various checks needed in one place, adding the grabber
+% to the signature is done here. The only questions are whether the
+% grabber should be long or not, and whether to obey spaces. The
+% \cs{l_@@_obey_spaces_bool} boolean can only be \texttt{true} for
+% trailing optional arguments. In that case spaces will not be
+% ignored when looking for that optional argument.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_grabber:N #1
+ {
+ \tl_put_right:Nx \l_@@_signature_tl
+ {
+ \exp_not:c
+ {
+ @@_grab_ #1
+ \bool_if:NT \l_@@_long_bool { _long }
+ \bool_if:NT \l_@@_obey_spaces_bool { _obey_spaces }
+ :w
+ }
+ }
+ \bool_set_false:N \l_@@_long_bool
+ \bool_set_false:N \l_@@_obey_spaces_bool
+ \tl_put_right:Nx \l_@@_process_all_tl
+ { { \exp_not:o \l_@@_process_one_tl } }
+ \tl_clear:N \l_@@_process_one_tl
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_default:n, \@@_add_default:, \@@_add_default_E:nn}
+% Store the default value of an argument, or rather code that gives
+% that default value (it may involve other arguments). This is
+% \cs{c_novalue_tl} for arguments with no actual default or with
+% default |-NoValue-|; and (in a brace group) \cs{prg_do_nothing:}
+% followed by a default value for others. For \texttt{E}-type
+% arguments, pad the defaults |#2| with some \cs{c_novalue_tl}
+% until there are as many as embellishments~|#1|. These functions are
+% also used when defining expandable commands.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_default:n #1
+ {
+ \tl_if_novalue:nTF {#1}
+ { \@@_add_default: }
+ {
+ \int_incr:N \l_@@_current_arg_int
+ \bool_set_true:N \l_@@_defaults_bool
+ \tl_put_right:Nn \l_@@_defaults_tl { { \prg_do_nothing: #1 } }
+ }
+ }
+\cs_new_protected:Npn \@@_add_default:
+ {
+ \int_incr:N \l_@@_current_arg_int
+ \tl_put_right:Nn \l_@@_defaults_tl { \c_novalue_tl }
+ }
+\cs_new_protected:Npn \@@_add_default_E:nn #1#2
+ {
+ \tl_map_function:nN {#2} \@@_add_default:n
+ \prg_replicate:nn
+ { \tl_count:n {#1} - \tl_count:n {#2} }
+ { \@@_add_default: }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \subsection{Setting up expandable types}
+%
+% The approach here is not dissimilar to that for standard types, but fewer types
+% are supported. There is
+% also a need to define the per-function auxiliaries: this is done here, while
+% the general grabbers are dealt with later.
+%
+% \begin{macro}{\@@_add_expandable_type_+:w}
+% We have already checked that short arguments are before long
+% arguments, so \cs{l_@@_long_bool} only changes from \texttt{false}
+% to \texttt{true} once (and there is no need to reset it after each
+% argument). Also knock back the argument count because |+| is not an
+% argument. Continue the loop.
+% \begin{macrocode}
+\cs_new_protected:cpn { @@_add_expandable_type_+:w }
+ {
+ \bool_set_true:N \l_@@_long_bool
+ \@@_prepare_signature:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_expandable_type_D:w}
+% \begin{macro}{\@@_add_expandable_type_D_aux:NNNn}
+% \begin{macro}{\@@_add_expandable_type_D_aux:NNN}
+% \begin{macro}{\@@_add_expandable_type_D_aux:NN}
+% The set up for \texttt{D}-type arguments involves constructing a
+% rather complex auxiliary which is used
+% repeatedly when grabbing. There is an auxiliary here so that the
+% \texttt{R}-type can share code readily: |#1| is |D| or~|R|.
+% The |_aux:NN| auxiliary is needed if the two delimiting tokens are
+% identical: in contrast to the non-expandable route, the grabber here
+% has to act differently for this case.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_expandable_type_D:w
+ { \@@_add_expandable_type_D_aux:NNNn D }
+\cs_new_protected:Npn \@@_add_expandable_type_D_aux:NNNn #1#2#3#4
+ {
+ \@@_add_default:n {#4}
+ \tl_if_eq:nnTF {#2} {#3}
+ { \@@_add_expandable_type_D_aux:NN #1 #2 }
+ { \@@_add_expandable_type_D_aux:NNN #1 #2 #3 }
+ \@@_prepare_signature:N
+ }
+\cs_new_protected:Npn \@@_add_expandable_type_D_aux:NNN #1#2#3
+ {
+ \bool_if:NTF \l_@@_long_bool
+ { \cs_set:cpx }
+ { \cs_set_nopar:cpx }
+ { \l_@@_expandable_aux_name_tl } ##1 ##2 #2 ##3 \q_@@ ##4 #3
+ { ##1 {##2} {##3} {##4} }
+ \@@_add_expandable_grabber:nn {#1}
+ {
+ \exp_not:c { \l_@@_expandable_aux_name_tl }
+ \exp_not:n { #2 #3 }
+ }
+ }
+\cs_new_protected:Npn \@@_add_expandable_type_D_aux:NN #1#2
+ {
+ \bool_if:NTF \l_@@_long_bool
+ { \cs_set:cpx }
+ { \cs_set_nopar:cpx }
+ { \l_@@_expandable_aux_name_tl } ##1 #2 ##2 #2
+ { ##1 {##2} }
+ \@@_add_expandable_grabber:nn { #1_alt }
+ {
+ \exp_not:c { \l_@@_expandable_aux_name_tl }
+ \exp_not:n {#2}
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_expandable_type_E:w}
+% \begin{macro}{\@@_add_expandable_type_E_aux:n}
+% For each embellishment, use \cs{@@_get_grabber:NN} to obtain an
+% auxiliary delimited by that token and store a pair constituted of
+% the auxiliary and the token in \cs{l_@@_tmpb_tl}, before appending
+% the whole set of these pairs to the signature, and an equal number
+% of |-NoValue-| markers (regardless of the default values of
+% arguments). Set the current argument appropriately.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_expandable_type_E:w #1#2
+ {
+ \@@_add_default_E:nn {#1} {#2}
+ \tl_clear:N \l_@@_tmpb_tl
+ \tl_map_function:nN {#1} \@@_add_expandable_type_E_aux:n
+ \@@_add_expandable_grabber:nn
+ { E \bool_if:NT \l_@@_long_bool { _long } }
+ {
+ { \exp_not:o \l_@@_tmpb_tl }
+ {
+ \prg_replicate:nn { \tl_count:n {#1} }
+ { { \c_novalue_tl } }
+ }
+ }
+ \@@_prepare_signature:N
+ }
+\cs_new_protected:Npn \@@_add_expandable_type_E_aux:n #1
+ {
+ \@@_get_grabber:NN #1 \l_@@_tmpa_tl
+ \tl_put_right:Nx \l_@@_tmpb_tl
+ { \exp_not:o \l_@@_tmpa_tl \exp_not:N #1 }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_expandable_type_m:w}
+% Unlike the standard case, when working expandably each argument is always
+% grabbed separately.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_expandable_type_m:w
+ {
+ \@@_add_default:
+ \@@_add_expandable_grabber:nn
+ { m \bool_if:NT \l_@@_long_bool { _long } } { }
+ \@@_prepare_signature:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_expandable_type_R:w}
+% The \texttt{R}-type is very similar to the \texttt{D}-type
+% argument, and so the same internals are used.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_expandable_type_R:w
+ { \@@_add_expandable_type_D_aux:NNNn R }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_expandable_type_t:w}
+% An auxiliary delimited by |#1| is built now. It will be used to
+% test for the presence of that token.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_expandable_type_t:w #1
+ {
+ \@@_add_default:
+ \@@_get_grabber:NN #1 \l_@@_tmpa_tl
+ \@@_add_expandable_grabber:nn { t }
+ {
+ \exp_not:o \l_@@_tmpa_tl
+ \exp_not:N #1
+ }
+ \@@_prepare_signature:N
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_expandable_grabber:nn}
+% This is called for all arguments to place the right grabber in the
+% signature.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_expandable_grabber:nn #1#2
+ {
+ \tl_put_right:Nx \l_@@_signature_tl
+ { \exp_not:c { @@_expandable_grab_ #1 :w } #2 }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_get_grabber:NN}
+% \begin{macro}{\@@_get_grabber_auxi:NN}
+% \begin{macro}{\@@_get_grabber_auxii:NN}
+% Given a token |#1|, defines an expandable function delimited by that
+% token and stores it in the token list~|#2|. The function is named
+% after the token, unless that function name is already taken by some
+% other grabber (this can happen in the rare case where delimiters
+% with different category codes are used in the same document): in
+% that case use a global counter to get a unique name. Since the
+% grabbers are not named after \pkg{xparse} commands they should not
+% be used to get material from the input stream.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_get_grabber:NN #1#2
+ {
+ \cs_set:Npn \@@_tmp:w ##1 #1 {##1}
+ \exp_args:Nc \@@_get_grabber_auxi:NN
+ { @@_grabber_ \token_to_str:N #1 :w } #2
+ }
+\cs_new_protected:Npn \@@_get_grabber_auxi:NN #1#2
+ {
+ \cs_if_eq:NNTF \@@_tmp:w #1
+ { \tl_set:Nn #2 {#1} }
+ {
+ \cs_if_exist:NTF #1
+ {
+ \int_gincr:N \g_@@_grabber_int
+ \exp_args:Nc \@@_get_grabber_auxi:NN
+ {
+ @@_grabber_
+ - \int_use:N \g_@@_grabber_int :w
+ }
+ #2
+ }
+ { \@@_get_grabber_auxii:NN #1 #2 }
+ }
+ }
+\cs_new_protected:Npn \@@_get_grabber_auxii:NN #1#2
+ {
+ \cs_set_eq:NN #1 \@@_tmp:w
+ \tl_set:Nn #2 {#1}
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Grabbing arguments}
+%
+% All of the grabbers follow the same basic pattern. The initial
+% function stores in \cs{l_@@_signature_tl} the code to grab further
+% arguments, defines (the function in) \cs{l_@@_fn_tl} that will grab
+% the argument, and calls it.
+%
+% Defining \cs{l_@@_fn_tl} means determining whether to use
+% \cs{cs_set:Npn} or \cs{cs_set_nopar:Npn}, and for optional arguments
+% whether to skip spaces. Once the argument is found, \cs{l_@@_fn_tl}
+% calls \cs{@@_add_arg:n}, responsible for calling processors and
+% grabbing further arguments.
+%
+% \begin{macro}
+% {
+% \@@_grab_b:w,
+% \@@_grab_b_long:w,
+% \@@_grab_b_obey_spaces:w,
+% \@@_grab_b_long_obey_spaces:w,
+% \@@_grab_b_aux:NNw,
+% \@@_grab_b_end:Nw
+% }
+% This uses the well-tested code of \texttt{D}-type arguments,
+% skipping the peeking step because the \texttt{b}-type argument is
+% always present, and adding a cleanup stage at the end by hijacking
+% the signature. The clean-up consists of properly
+% dealing with \cs{l_@@_args_tl} and also putting back the \cs{end}
+% that served as an end-delimiter: this \cs{end} receives the
+% environment name as its argument and is run normally. The
+% \texttt{D}-type code stores the argument found (body of the
+% environment) as a brace group in \cs{l_@@_args_tl} and depending on
+% the presence of a prefix~|!| we trim spaces or not before adding
+% this braced argument into the saved \cs{l_@@_args_tl}.
+% The strange \verb*|\begin | control sequence is there for display
+% purposes only: it has to look like |\begin| in the terminal but
+% not to delimited arguments.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_b:w
+ { \@@_grab_b_aux:NNw \cs_set_protected_nopar:Npn \tl_trim_spaces:n }
+\cs_new_protected:Npn \@@_grab_b_long:w
+ { \@@_grab_b_aux:NNw \cs_set_protected:Npn \tl_trim_spaces:n }
+\cs_new_protected:Npn \@@_grab_b_obey_spaces:w
+ { \@@_grab_b_aux:NNw \cs_set_protected_nopar:Npn \exp_not:n }
+\cs_new_protected:Npn \@@_grab_b_long_obey_spaces:w
+ { \@@_grab_b_aux:NNw \cs_set_protected:Npn \exp_not:n }
+\cs_new_protected:Npn \@@_grab_b_aux:NNw #1#2#3 \@@_run_code:
+ {
+ \@@_grab_D_aux:NNnN \begin \end {#3} #1
+ \tl_put_left:Nn \l_@@_signature_tl { \@@_grab_b_end:Nw #2 }
+ \tl_set_eq:NN \l_@@_saved_args_tl \l_@@_args_tl
+ \tl_clear:N \l_@@_args_tl
+ \exp_args:Nc \l_@@_fn_tl { begin ~ }
+ }
+\cs_new_protected:Npn \@@_grab_b_end:Nw #1#2 \@@_run_code:
+ {
+ \tl_set:Nx \l_@@_args_tl
+ {
+ \exp_not:V \l_@@_saved_args_tl
+ { \exp_after:wN #1 \l_@@_args_tl }
+ }
+ #2
+ \@@_run_code:
+ \end
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_grab_D:w}
+% \begin{macro}{\@@_grab_D_long:w}
+% \begin{macro}{\@@_grab_D_obey_spaces:w}
+% \begin{macro}{\@@_grab_D_long_obey_spaces:w}
+% The generic delimited argument grabber. The auxiliary function does
+% a peek test before calling \cs{@@_grab_D_call:Nw}, so that the
+% optional nature of the argument works as expected.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_D:w #1#2#3 \@@_run_code:
+ {
+ \@@_grab_D_aux:NNnNN #1 #2 {#3} \cs_set_protected_nopar:Npn
+ \@@_peek_nonspace_remove:NTF
+ }
+\cs_new_protected:Npn \@@_grab_D_long:w #1#2#3 \@@_run_code:
+ {
+ \@@_grab_D_aux:NNnNN #1 #2 {#3} \cs_set_protected:Npn
+ \@@_peek_nonspace_remove:NTF
+ }
+\cs_new_protected:Npn \@@_grab_D_obey_spaces:w #1#2#3 \@@_run_code:
+ {
+ \@@_grab_D_aux:NNnNN #1 #2 {#3} \cs_set_protected_nopar:Npn
+ \@@_peek_meaning_remove:NTF
+ }
+\cs_new_protected:Npn \@@_grab_D_long_obey_spaces:w #1#2#3 \@@_run_code:
+ {
+ \@@_grab_D_aux:NNnNN #1 #2 {#3} \cs_set_protected:Npn
+ \@@_peek_meaning_remove:NTF
+ }
+% \end{macrocode}
+% \begin{macro}{\@@_grab_D_aux:NNnNN}
+% \begin{macro}{\@@_grab_D_aux:NNnN}
+% This is a bit complicated. The idea is that, in order to check for
+% nested optional argument tokens (\texttt{[[...]]} and so on) the
+% argument needs to be grabbed without removing any braces at all. If
+% this is not done, then cases like |[{[}]| fail. So after testing for
+% an optional argument, it is collected piece-wise. Inserting a quark
+% prevents loss of braces, and there is then a test to see if there are
+% nested delimiters to handle.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_D_aux:NNnNN #1#2#3#4#5
+ {
+ \@@_grab_D_aux:NNnN #1#2 {#3} #4
+ #5 #1
+ { \@@_grab_D_call:Nw #1 }
+ { \@@_add_arg:o \c_novalue_tl }
+ }
+% \end{macrocode}
+% Inside the \enquote{standard} grabber, there is a test to see if the
+% grabbed argument is entirely enclosed by braces. There are a couple of
+% extra factors to allow for: the argument might be entirely empty, and
+% spaces at the start and end of the input must be retained around a brace
+% group. Also notice that a \emph{blank} argument might still contain
+% spaces.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_D_aux:NNnN #1#2#3#4
+ {
+ \tl_set:Nn \l_@@_signature_tl {#3}
+ \exp_after:wN #4 \l_@@_fn_tl ##1 #2
+ {
+ \tl_if_in:nnTF {##1} {#1}
+ { \@@_grab_D_nested:NNnN #1 #2 {##1} #4 }
+ {
+ \tl_if_blank:oTF { \use_none:n ##1 }
+ { \@@_add_arg:o { \use_none:n ##1 } }
+ {
+ \str_if_eq:eeTF
+ { \exp_not:o { \use_none:n ##1 } }
+ { { \exp_not:o { \use_ii:nnn ##1 \q_nil } } }
+ { \@@_add_arg:o { \use_ii:nn ##1 } }
+ { \@@_add_arg:o { \use_none:n ##1 } }
+ }
+ }
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\@@_grab_D_nested:NNnN}
+% \begin{macro}{\@@_grab_D_nested:w}
+% \begin{macro}{\l_@@_nesting_a_tl}
+% \begin{macro}{\l_@@_nesting_b_tl}
+% \begin{macro}{\q_@@}
+% Catching nested optional arguments means more work. The aim here is
+% to collect up each pair of optional tokens without \TeX{} helping out,
+% and without counting anything. The code above will already have
+% removed the leading opening token and a closing token, but the
+% wrong one. The aim is then to work through the material grabbed
+% so far and divide it up on each opening token, grabbing a closing
+% token to match (thus working in pairs). Once there are no opening
+% tokens, then there is a second check to see if there are any
+% opening tokens in the second part of the argument (for things
+% like |[][]|). Once everything has been found, the entire collected
+% material is added to the output as a single argument. The only tricky part
+% here is ensuring that any grabbing function that might run away is named
+% after the function currently being parsed and not after \pkg{xparse}. That
+% leads to some rather complex nesting! There is also a need to prevent the
+% loss of any braces, hence the insertion and removal of quarks along the
+% way.
+% \begin{macrocode}
+\tl_new:N \l_@@_nesting_a_tl
+\tl_new:N \l_@@_nesting_b_tl
+\quark_new:N \q_@@
+\cs_new_protected:Npn \@@_grab_D_nested:NNnN #1#2#3#4
+ {
+ \tl_clear:N \l_@@_nesting_a_tl
+ \tl_clear:N \l_@@_nesting_b_tl
+ \exp_after:wN #4 \l_@@_fn_tl ##1 #1 ##2 \q_@@ ##3 #2
+ {
+ \tl_put_right:No \l_@@_nesting_a_tl { \use_none:n ##1 #1 }
+ \tl_put_right:No \l_@@_nesting_b_tl { \use_i:nn #2 ##3 }
+ \tl_if_in:nnTF {##2} {#1}
+ {
+ \l_@@_fn_tl
+ \q_nil ##2 \q_@@ \ERROR
+ }
+ {
+ \tl_put_right:Nx \l_@@_nesting_a_tl
+ { \@@_grab_D_nested:w \q_nil ##2 \q_stop }
+ \tl_if_in:NnTF \l_@@_nesting_b_tl {#1}
+ {
+ \tl_set_eq:NN \l_@@_tmpa_tl \l_@@_nesting_b_tl
+ \tl_clear:N \l_@@_nesting_b_tl
+ \exp_after:wN \l_@@_fn_tl \exp_after:wN
+ \q_nil \l_@@_tmpa_tl \q_nil \q_@@ \ERROR
+ }
+ {
+ \tl_put_right:No \l_@@_nesting_a_tl
+ \l_@@_nesting_b_tl
+ \@@_add_arg:V \l_@@_nesting_a_tl
+ }
+ }
+ }
+ \l_@@_fn_tl #3 \q_nil \q_@@ \ERROR
+ }
+\cs_new:Npn \@@_grab_D_nested:w #1 \q_nil \q_stop
+ { \exp_not:o { \use_none:n #1 } }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\@@_grab_D_call:Nw}
+% For \texttt{D} and \texttt{R}-type arguments, to avoid losing any
+% braces, a token needs to be inserted before the argument to be grabbed.
+% If the argument runs away because the closing token is missing then this
+% inserted token shows up in the terminal. Ideally, |#1| would therefore be
+% used directly, but that is no good as it will mess up the rest of the
+% grabber. Instead, a copy of |#1| with an altered category code is used,
+% as this will look right in the terminal but will not mess up the grabber.
+% The only issue then is that the category code of |#1| is unknown. So there
+% is a quick test to ensure that the inserted token can never be matched by
+% the grabber. (This assumes that the open and close delimiters are not the
+% same character with different category codes, but that really should not
+% happen in any sensible document-level syntax.)
+% An exception is when |#1| is a control sequence token, in which case the
+% character-token treatment is no good because if hit with \cs{token_to_str:N}
+% it would add sputios tokens to the argument. In this case a different
+% branch is taken. The token inserted is then the same \meta{csname} as |#1|,
+% but with a space appended, so that the grabber don't see it as another
+% of the same delimiter.
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_grab_D_call:Nw #1
+ {
+ \token_if_eq_catcode:NNTF + #1
+ {
+ \exp_after:wN \exp_after:wN \exp_after:wN
+ \l_@@_fn_tl \char_generate:nn { `#1 } { 11 }
+ }
+ {
+ \@@_token_if_cs:NTF #1
+ {
+ \exp_after:wN \l_@@_fn_tl
+ \cs:w \cs_to_str:N #1 ~ \cs_end:
+ }
+ {
+ \exp_after:wN \l_@@_fn_tl
+ \token_to_str:N #1
+ }
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}
+% {
+% \@@_grab_E:w, \@@_grab_E_long:w,
+% \@@_grab_E_obey_spaces:w, \@@_grab_E_long_obey_spaces:w
+% }
+% \begin{macro}{\@@_grab_E:nnNN}
+% \begin{macro}{\@@_grab_E_loop:NnN}
+% \begin{macro}{\@@_grab_E_finalise:}
+% Everything here needs to point to a loop.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_E:w #1#2 \@@_run_code:
+ {
+ \@@_grab_E:nnNN {#1} {#2}
+ \cs_set_protected_nopar:Npn
+ \@@_peek_nonspace_remove:NTF
+ }
+\cs_new_protected:Npn \@@_grab_E_long:w #1#2 \@@_run_code:
+ {
+ \@@_grab_E:nnNN {#1} {#2}
+ \cs_set_protected:Npn
+ \@@_peek_nonspace_remove:NTF
+ }
+\cs_new_protected:Npn \@@_grab_E_obey_spaces:w #1#2 \@@_run_code:
+ {
+ \@@_grab_E:nnNN {#1} {#2}
+ \cs_set_protected_nopar:Npn
+ \@@_peek_meaning_remove:NTF
+ }
+\cs_new_protected:Npn \@@_grab_E_long_obey_spaces:w #1#2 \@@_run_code:
+ {
+ \@@_grab_E:nnNN {#1} {#2}
+ \cs_set_protected:Npn
+ \@@_peek_meaning_remove:NTF
+ }
+% \end{macrocode}
+% A loop is needed here to allow a random ordering of keys. These are
+% searched for one at a time, with any not found needing to be tracked:
+% they can appear later. The grabbed values are held in a property list
+% which is then turned into an ordered list to be passed back to the user.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_E:nnNN #1#2#3#4
+ {
+ \exp_after:wN #3 \l_@@_fn_tl ##1##2##3
+ {
+ \prop_put:Nnn \l_@@_tmp_prop {##1} {##3}
+ \@@_grab_E_loop:NnN #4 { } ##2 \q_recursion_stop
+ }
+ \prop_clear:N \l_@@_tmp_prop
+ \tl_set:Nn \l_@@_signature_tl {#2}
+ \cs_set_protected:Npn \@@_grab_E_finalise:
+ {
+ \tl_map_inline:nn {#1}
+ {
+ \prop_get:NnNF \l_@@_tmp_prop {####1} \l_@@_tmpb_tl
+ { \tl_set_eq:NN \l_@@_tmpb_tl \c_novalue_tl }
+ \tl_put_right:Nx \l_@@_args_tl
+ { { \exp_not:V \l_@@_tmpb_tl } }
+ }
+ \l_@@_signature_tl \@@_run_code:
+ }
+ \@@_grab_E_loop:NnN #4 { } #1 \q_recursion_tail \q_recursion_stop
+ }
+\cs_new_protected:Npn \@@_grab_E_loop:NnN #1#2#3#4 \q_recursion_stop
+ {
+ \cs_if_eq:NNTF #3 \q_recursion_tail
+ { \@@_grab_E_finalise: }
+ {
+ #1 #3
+ { \l_@@_fn_tl #3 {#2#4} }
+ { \@@_grab_E_loop:NnN #1 {#2#3} #4 \q_recursion_stop }
+ }
+ }
+\cs_new_protected:Npn \@@_grab_E_finalise: { }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+%
+% \begin{macro}{\@@_grab_m:w}
+% \begin{macro}{\@@_grab_m_long:w}
+% Collecting a single mandatory argument is quite easy.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_m:w #1 \@@_run_code:
+ {
+ \tl_set:Nn \l_@@_signature_tl {#1}
+ \exp_after:wN \cs_set_protected_nopar:Npn \l_@@_fn_tl ##1
+ { \@@_add_arg:n {##1} }
+ \l_@@_fn_tl
+ }
+\cs_new_protected:Npn \@@_grab_m_long:w #1 \@@_run_code:
+ {
+ \tl_set:Nn \l_@@_signature_tl {#1}
+ \exp_after:wN \cs_set_protected:Npn \l_@@_fn_tl ##1
+ { \@@_add_arg:n {##1} }
+ \l_@@_fn_tl
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_grab_m_1:w}
+% \begin{macro}{\@@_grab_m_2:w}
+% \begin{macro}{\@@_grab_m_3:w}
+% \begin{macro}{\@@_grab_m_4:w}
+% \begin{macro}{\@@_grab_m_5:w}
+% \begin{macro}{\@@_grab_m_6:w}
+% \begin{macro}{\@@_grab_m_7:w}
+% \begin{macro}{\@@_grab_m_8:w}
+% \begin{macro}{\@@_grab_m_9:w}
+% \begin{macro}{\@@_grab_m_aux:Nnnnnnnnn}
+% Grabbing 1--8 mandatory arguments is done by giving 8--1 known
+% arguments to a 9-argument function that stores them in
+% \cs{l_@@_args_tl}. For simplicity, grabbing 9 mandatory arguments
+% is done by grabbing 5 then 4 arguments.
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_grab_m_aux:Nnnnnnnnn #1#2#3#4#5#6#7#8#9
+ {
+ \tl_put_right:No \l_@@_args_tl
+ { #1 {#2} {#3} {#4} {#5} {#6} {#7} {#8} {#9} }
+ \l_@@_signature_tl \@@_run_code:
+ }
+\cs_new_protected:cpn { @@_grab_m_1:w } #1 \@@_run_code:
+ {
+ \tl_set:Nn \l_@@_signature_tl {#1}
+ \exp_after:wN \cs_set_eq:NN \l_@@_fn_tl \@@_grab_m_aux:Nnnnnnnnn
+ \l_@@_fn_tl \use_none:nnnnnnn { } { } { } { } { } { } { }
+ }
+\cs_new_protected:cpn { @@_grab_m_2:w } #1 \@@_run_code:
+ {
+ \tl_set:Nn \l_@@_signature_tl {#1}
+ \exp_after:wN \cs_set_eq:NN \l_@@_fn_tl \@@_grab_m_aux:Nnnnnnnnn
+ \l_@@_fn_tl \use_none:nnnnnn { } { } { } { } { } { }
+ }
+\cs_new_protected:cpn { @@_grab_m_3:w } #1 \@@_run_code:
+ {
+ \tl_set:Nn \l_@@_signature_tl {#1}
+ \exp_after:wN \cs_set_eq:NN \l_@@_fn_tl \@@_grab_m_aux:Nnnnnnnnn
+ \l_@@_fn_tl \use_none:nnnnn { } { } { } { } { }
+ }
+\cs_new_protected:cpn { @@_grab_m_4:w } #1 \@@_run_code:
+ {
+ \tl_set:Nn \l_@@_signature_tl {#1}
+ \exp_after:wN \cs_set_eq:NN \l_@@_fn_tl \@@_grab_m_aux:Nnnnnnnnn
+ \l_@@_fn_tl \use_none:nnnn { } { } { } { }
+ }
+\cs_new_protected:cpn { @@_grab_m_5:w } #1 \@@_run_code:
+ {
+ \tl_set:Nn \l_@@_signature_tl {#1}
+ \exp_after:wN \cs_set_eq:NN \l_@@_fn_tl \@@_grab_m_aux:Nnnnnnnnn
+ \l_@@_fn_tl \use_none:nnn { } { } { }
+ }
+\cs_new_protected:cpn { @@_grab_m_6:w } #1 \@@_run_code:
+ {
+ \tl_set:Nn \l_@@_signature_tl {#1}
+ \exp_after:wN \cs_set_eq:NN \l_@@_fn_tl \@@_grab_m_aux:Nnnnnnnnn
+ \l_@@_fn_tl \use_none:nn { } { }
+ }
+\cs_new_protected:cpn { @@_grab_m_7:w } #1 \@@_run_code:
+ {
+ \tl_set:Nn \l_@@_signature_tl {#1}
+ \exp_after:wN \cs_set_eq:NN \l_@@_fn_tl \@@_grab_m_aux:Nnnnnnnnn
+ \l_@@_fn_tl \use_none:n { }
+ }
+\cs_new_protected:cpn { @@_grab_m_8:w } #1 \@@_run_code:
+ {
+ \tl_set:Nn \l_@@_signature_tl {#1}
+ \exp_after:wN \cs_set_eq:NN \l_@@_fn_tl \@@_grab_m_aux:Nnnnnnnnn
+ \l_@@_fn_tl \prg_do_nothing:
+ }
+\cs_new_protected:cpx { @@_grab_m_9:w }
+ {
+ \exp_not:c { @@_grab_m_5:w }
+ \exp_not:c { @@_grab_m_4:w }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_grab_R:w, \@@_grab_R_long:w}
+% \begin{macro}{\@@_grab_R_aux:NNnN}
+% The grabber for \texttt{R}-type arguments is basically the same as
+% that for \texttt{D}-type ones, but always skips spaces (as it is mandatory)
+% and has a hard-coded error message.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_R:w #1#2#3 \@@_run_code:
+ { \@@_grab_R_aux:NNnN #1 #2 {#3} \cs_set_protected_nopar:Npn }
+\cs_new_protected:Npn \@@_grab_R_long:w #1#2#3 \@@_run_code:
+ { \@@_grab_R_aux:NNnN #1 #2 {#3} \cs_set_protected:Npn }
+\cs_new_protected:Npn \@@_grab_R_aux:NNnN #1#2#3#4
+ {
+ \@@_grab_D_aux:NNnN #1 #2 {#3} #4
+ \@@_peek_nonspace_remove:NTF #1
+ { \@@_grab_D_call:Nw #1 }
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { missing-required }
+ { \@@_environment_or_command: }
+ { \token_to_str:N #1 }
+ \@@_add_arg:o \c_novalue_tl
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_grab_t:w}
+% \begin{macro}{\@@_grab_t_obey_spaces:w}
+% \begin{macro}{\@@_grab_t_aux:NNw}
+% Dealing with a token is quite easy. Check the match, remove the
+% token if needed and add a flag to the output.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_t:w
+ { \@@_grab_t_aux:NNw \@@_peek_nonspace_remove:NTF }
+\cs_new_protected:Npn \@@_grab_t_obey_spaces:w
+ { \@@_grab_t_aux:NNw \@@_peek_meaning_remove:NTF }
+\cs_new_protected:Npn \@@_grab_t_aux:NNw #1#2#3 \@@_run_code:
+ {
+ \tl_set:Nn \l_@@_signature_tl {#3}
+ \exp_after:wN \cs_set_protected:Npn \l_@@_fn_tl
+ {
+ #1 #2
+ { \@@_add_arg:n { \BooleanTrue } }
+ { \@@_add_arg:n { \BooleanFalse } }
+ }
+ \l_@@_fn_tl
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{variable}{\l_@@_v_arg_tl}
+% \begin{macrocode}
+\tl_new:N \l_@@_v_arg_tl
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{\@@_grab_v:w}
+% \begin{macro}{\@@_grab_v_long:w}
+% \begin{macro}{\@@_grab_v_aux:w}
+% \begin{macro}{\@@_grab_v_group_end:}
+% The opening delimiter is the first non-space token, and is never
+% read verbatim. This is required by consistency with the case where
+% the preceding argument was optional and absent: then \TeX{} has
+% already read and tokenized that token when looking for the optional
+% argument. The first thing is thus to check is that this delimiter
+% is a character, and to distinguish the case of a left brace (in that
+% case, \cs{group_align_safe_end:} is needed to compensate for the
+% begin-group character that was just seen). Then set verbatim
+% catcodes with \cs{@@_grab_v_aux_catcodes:}.
+%
+% The group keep catcode changes local, and
+% \cs{group_align_safe_begin/end:} allow to use a character
+% with category code~$4$ (normally |&|) as the delimiter (all commands
+% do \cs{group_align_safe_begin/end:}, so there's no need to do that
+% again here).
+% It is ended by \cs{@@_grab_v_group_end:}, which smuggles
+% the collected argument out of the group.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_v:w
+ {
+ \bool_set_false:N \l_@@_long_bool
+ \@@_grab_v_aux:w
+ }
+\cs_new_protected:Npn \@@_grab_v_long:w
+ {
+ \bool_set_true:N \l_@@_long_bool
+ \@@_grab_v_aux:w
+ }
+\cs_new_protected:Npn \@@_grab_v_aux:w #1 \@@_run_code:
+ {
+ \tl_set:Nn \l_@@_signature_tl {#1}
+ \group_begin:
+ \tex_escapechar:D = 92 \scan_stop:
+ \tl_clear:N \l_@@_v_arg_tl
+ \peek_remove_spaces:n
+ {
+ \peek_meaning_remove:NTF \c_group_begin_token
+ {
+ \group_align_safe_end:
+ \@@_grab_v_bgroup:
+ }
+ {
+ \peek_N_type:TF
+ { \@@_grab_v_aux_test:N }
+ { \@@_grab_v_aux_abort:n { } }
+ }
+ }
+ }
+\cs_new_protected:Npn \@@_grab_v_group_end:
+ {
+ \exp_args:NNNo
+ \group_end:
+ \tl_set:Nn \l_@@_v_arg_tl { \l_@@_v_arg_tl }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_grab_v_aux_test:N}
+% \begin{macro}
+% {
+% \@@_grab_v_aux_loop:N,
+% \@@_grab_v_aux_loop:NN,
+% \@@_grab_v_aux_loop_end:
+% }
+% Check that the opening delimiter is a character, setup category codes,
+% then start reading tokens one by one, keeping the delimiter as an argument.
+% If the verbatim was not nested, we will be grabbing one character
+% at each step. Unfortunately, it can happen that what follows the
+% verbatim argument is already tokenized. Thus, we check at each step
+% that the next token is indeed a \enquote{nice}
+% character, \emph{i.e.}, is not a character with
+% category code $1$ (begin-group), $2$ (end-group)
+% or $6$ (macro parameter), nor the space character,
+% with category code~$10$ and character code~$32$,
+% nor a control sequence.
+% The partially built argument is stored in \cs{l_@@_v_arg_tl}.
+% If we ever meet a token which we cannot grab (non-N-type),
+% or which is not a character according to
+% \cs{@@_grab_v_token_if_char:NTF}, then we bail out with
+% \cs{@@_grab_v_aux_abort:n}. Otherwise, we stop at the first
+% character matching the delimiter.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_v_aux_test:N #1
+ {
+ \@@_grab_v_token_if_char:NTF #1
+ {
+ \@@_grab_v_aux_put:N #1
+ \@@_grab_v_aux_catcodes:
+ \@@_grab_v_aux_loop:N #1
+ }
+ { \@@_grab_v_aux_abort:n {#1} #1 }
+ }
+\cs_new_protected:Npn \@@_grab_v_aux_loop:N #1
+ {
+ \peek_N_type:TF
+ { \@@_grab_v_aux_loop:NN #1 }
+ { \@@_grab_v_aux_abort:n { } }
+ }
+\cs_new_protected:Npn \@@_grab_v_aux_loop:NN #1#2
+ {
+ \@@_grab_v_token_if_char:NTF #2
+ {
+ \token_if_eq_charcode:NNTF #1 #2
+ { \@@_grab_v_aux_loop_end: }
+ {
+ \@@_grab_v_aux_put:N #2
+ \@@_grab_v_aux_loop:N #1
+ }
+ }
+ { \@@_grab_v_aux_abort:n {#2} #2 }
+ }
+\cs_new_protected:Npn \@@_grab_v_aux_loop_end:
+ {
+ \@@_grab_v_group_end:
+ \@@_add_arg:x { \tl_tail:N \l_@@_v_arg_tl }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{variable}{\l_@@_v_nesting_int}
+% \begin{macrocode}
+\int_new:N \l_@@_v_nesting_int
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{\@@_grab_v_bgroup:}
+% \begin{macro}{\@@_grab_v_bgroup_loop:}
+% \begin{macro}{\@@_grab_v_bgroup_loop:N}
+% If the opening delimiter is a left brace, we keep track of
+% how many left and right braces were encountered so far in
+% \cs{l_@@_v_nesting_int} (the methods used for optional
+% arguments cannot apply here), and stop as soon as it reaches~$0$.
+%
+% Some care was needed when removing the opening delimiter, which
+% has already been assigned category code~$1$: using
+% \cs{peek_meaning_remove:NTF} in the \cs{@@_grab_v_aux:w}
+% function would break within alignments. Instead, we first
+% convert that token to a string, and remove the result as a
+% normal undelimited argument.
+% \begin{macrocode}
+\cs_new_protected:Npx \@@_grab_v_bgroup:
+ {
+ \exp_not:N \@@_grab_v_aux_catcodes:
+ \exp_not:n { \int_set:Nn \l_@@_v_nesting_int { 1 } }
+ \exp_not:N \@@_grab_v_aux_put:N \iow_char:N \{
+ \exp_not:N \@@_grab_v_bgroup_loop:
+ }
+\cs_new_protected:Npn \@@_grab_v_bgroup_loop:
+ {
+ \peek_N_type:TF
+ { \@@_grab_v_bgroup_loop:N }
+ { \@@_grab_v_aux_abort:n { } }
+ }
+\cs_new_protected:Npn \@@_grab_v_bgroup_loop:N #1
+ {
+ \@@_grab_v_token_if_char:NTF #1
+ {
+ \token_if_eq_charcode:NNTF \c_group_end_token #1
+ {
+ \int_decr:N \l_@@_v_nesting_int
+ \int_compare:nNnTF \l_@@_v_nesting_int > 0
+ {
+ \@@_grab_v_aux_put:N #1
+ \@@_grab_v_bgroup_loop:
+ }
+ { \@@_grab_v_aux_loop_end: }
+ }
+ {
+ \token_if_eq_charcode:NNT \c_group_begin_token #1
+ { \int_incr:N \l_@@_v_nesting_int }
+ \@@_grab_v_aux_put:N #1
+ \@@_grab_v_bgroup_loop:
+ }
+ }
+ { \@@_grab_v_aux_abort:n {#1} #1 }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_grab_v_aux_catcodes:}
+% \begin{macro}{\@@_grab_v_aux_abort:n}
+% The approach for short verbatim arguments is to make the end-line
+% character a macro parameter character: this is forbidden by the
+% rest of the code. Then the error branch can check what caused the
+% bail out and give the appropriate error message.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_v_aux_catcodes:
+ {
+ \cs_set_eq:NN \do \char_set_catcode_other:N
+ \dospecials
+ \tex_endlinechar:D = `\^^M \scan_stop:
+ \bool_if:NTF \l_@@_long_bool
+ { \char_set_catcode_other:n { \tex_endlinechar:D } }
+ { \char_set_catcode_parameter:n { \tex_endlinechar:D } }
+ }
+\cs_new_protected:Npn \@@_grab_v_aux_abort:n #1
+ {
+ \@@_grab_v_group_end:
+ \exp_after:wN \exp_after:wN \exp_after:wN
+ \peek_meaning_remove:NTF \char_generate:nn { \tex_endlinechar:D } { 6 }
+ {
+ \__kernel_msg_error:nnxxx { ltcmd } { verbatim-newline }
+ { \@@_environment_or_command: }
+ { \tl_to_str:N \l_@@_v_arg_tl }
+ { \tl_to_str:n {#1} }
+ \@@_add_arg:o \c_novalue_tl
+ }
+ {
+ \__kernel_msg_error:nnxxx { ltcmd } { verbatim-tokenized }
+ { \@@_environment_or_command: }
+ { \tl_to_str:N \l_@@_v_arg_tl }
+ { \tl_to_str:n {#1} }
+ \@@_add_arg:o \c_novalue_tl
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_grab_v_aux_put:N}
+% Storing one token in the collected argument. Most tokens are
+% converted to category code $12$, with the exception of active
+% characters, and spaces (not sure what should be done for those).
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_v_aux_put:N #1
+ {
+ \tl_put_right:Nx \l_@@_v_arg_tl
+ {
+ \token_if_active:NTF #1
+ { \exp_not:N #1 } { \token_to_str:N #1 }
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_grab_v_token_if_char:NTF}
+% This function assumes that the escape character is printable.
+% Then the string representation of control sequences is at least
+% two characters, and \cs{str_tail:n} only removes the escape
+% character. Macro parameter characters are doubled by
+% \cs{tl_to_str:n}, and will also yield a non-empty result,
+% hence are not considered as characters.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_grab_v_token_if_char:NTF #1
+ { \str_if_eq:eeTF { } { \str_tail:n {#1} } }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_arg:n, \@@_add_arg:V, \@@_add_arg:o, \@@_add_arg:x}
+% When an argument is found it is stored, then further arguments are
+% grabbed by calling \cs{l_@@_signature_tl}.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_add_arg:n #1
+ {
+ \tl_put_right:Nn \l_@@_args_tl { {#1} }
+ \l_@@_signature_tl \@@_run_code:
+ }
+\cs_generate_variant:Nn \@@_add_arg:n { V , o , x }
+% \end{macrocode}
+% \end{macro}
+%
+% \subsection{Grabbing arguments expandably}
+%
+% \begin{macro}[EXP]{\@@_expandable_grab_D:w}
+% \begin{macro}[EXP]{\@@_expandable_grab_D:NNNwNNn}
+% \begin{macro}[EXP]{\@@_expandable_grab_D:NNNwNNnnn}
+% \begin{macro}[EXP]{\@@_expandable_grab_D:Nw}
+% \begin{macro}[EXP]{\@@_expandable_grab_D:nnNNNwNN}
+% The first step is to grab the first token or group. The generic grabbers
+% \cs{\meta{function}}\verb*| | and \cs{\meta{function}}\verb*| | are just after \cs{q_@@}, we go and find
+% them (and use the long one).
+% \begin{macrocode}
+\cs_new:Npn \@@_expandable_grab_D:w #1 \q_@@ #2#3
+ { #2 { \@@_expandable_grab_D:NNNwNNn #1 \q_@@ #2 #3 } }
+% \end{macrocode}
+% We then wish to test whether |#7|, which we just grabbed, is exactly |#2|.
+% A preliminary test is whether their string representations coincide, then
+% expand the only grabber function we have, |#1|, once: the two strings below
+% are equal if and only if |#7| matches |#2| exactly.\footnote{It is obvious
+% that if \texttt{\#7} matches \texttt{\#2} then the strings are equal. We
+% must check the converse. The right-hand-side of \cs{str_if_eq:onTF} does
+% not end with \texttt{\#3}, implying that the grabber function took
+% everything as its arguments. The first brace group can only be empty if
+% \texttt{\#7} starts with \texttt{\#2}, otherwise the brace group preceding
+% \texttt{\#7} would not vanish. The third brace group is empty, thus the
+% \cs{q_@@} that was used by our grabber \texttt{\#1} must be the one
+% that we inserted (not some token in \texttt{\#7}), hence the second brace
+% group contains the end of \texttt{\#7} followed by \texttt{\#2}. Since this
+% is \texttt{\#2} on the right-hand-side, and no brace can be lost there,
+% \texttt{\#7} must contain nothing else than its leading \texttt{\#2}.}
+% The preliminary test is needed as |#7| could validly contain
+% \tn{par} (because a later mandatory argument could be long) and our
+% grabber may be short. If
+% |#7| does not match |#2|, then the optional argument is missing, we use the
+% default |-NoValue-|, and put back the argument |#7| in the input stream.
+%
+% If it does match, then interesting things need to be done. We will grab the
+% argument piece by piece, with the following pattern:
+% \begin{quote}
+% \meta{grabber} \Arg{tokens} \\
+% ~~\cs{q_nil} \Arg{piece 1} \meta{piece 2} \cs{ERROR} \cs{q_@@}\\
+% ~~\cs{q_nil} \meta{input stream}
+% \end{quote}
+% The \meta{grabber} will find an opening delimiter in \meta{piece 2}, take
+% the \cs{q_@@} as a second delimiter, and find more material delimited
+% by the closing delimiter in the \meta{input stream}. We then move the part
+% before the opening delimiter from \meta{piece 2} to \meta{piece 1}, and the
+% material taken from the \meta{input stream} to the \meta{piece 2}. Thus,
+% the argument moves gradually from the \meta{input stream} to the
+% \meta{piece 2}, then to the \meta{piece 1} when we have made sure to find
+% all opening and closing delimiters. This two-step process ensures that
+% nesting works: the number of opening delimiters minus closing delimiters in
+% \meta{piece 1} is always equal to the number of closing delimiters in
+% \meta{piece 2}. We stop grabbing arguments once the \meta{piece 2} contains
+% no opening delimiter any more, hence the balance is reached, and the final
+% argument is \meta{piece 1} \meta{piece 2}.
+% The indirection via \cs{@@_tmp:w} allows to insert |-NoValue-| expanded.
+% \begin{macrocode}
+\cs_set_protected:Npn \@@_tmp:w #1
+ {
+ \cs_new:Npn \@@_expandable_grab_D:NNNwNNn ##1##2##3##4 \q_@@ ##5##6##7
+ {
+ \str_if_eq:nnTF {##2} {##7}
+ {
+ \str_if_eq:onTF
+ { ##1 { } { } ##7 ##2 \q_@@ ##3 }
+ { { } {##2} { } }
+ }
+ { \use_ii:nn }
+ {
+ ##1
+ { \@@_expandable_grab_D:NNNwNNnnn ##1##2##3##4 \q_@@ ##5##6 }
+ \q_nil { } ##2 \ERROR \q_@@ \ERROR
+ }
+ { ##4 {#1} \q_@@ ##5 ##6 {##7} }
+ }
+ }
+\exp_args:No \@@_tmp:w { \c_novalue_tl }
+% \end{macrocode}
+% At this stage, |#7| is \cs{q_nil} \Arg{piece 1} \meta{more for piece 1},
+% and we want to concatenate all that, removing \cs{q_nil}, and keeping the
+% opening delimiter |#2|. Simply use \cs{use_ii:nn}. Also, |#8| is
+% \meta{remainder of piece 2} \cs{ERROR}, and |#9| is \cs{ERROR} \meta{more
+% for piece 2}. We concatenate those, replacing the two \cs{ERROR} by the
+% closing delimiter |#3|.
+% \begin{macrocode}
+\cs_new:Npn \@@_expandable_grab_D:NNNwNNnnn #1#2#3#4 \q_@@ #5#6#7#8#9
+ {
+ \exp_args:Nof \@@_expandable_grab_D:nnNNNwNN
+ { \use_ii:nn #7 #2 }
+ { \@@_expandable_grab_D:Nw #3 \exp_stop_f: #8 #9 }
+ #1#2#3 #4 \q_@@ #5 #6
+ }
+\cs_new:Npn \@@_expandable_grab_D:Nw #1#2 \ERROR \ERROR { #2 #1 }
+% \end{macrocode}
+% Armed with our two new \meta{pieces}, we are ready to loop. However, we
+% must first see if \meta{piece 2} (here |#2|) contains any opening
+% delimiter |#4|. Again, we expand |#3|, this time removing its whole output
+% with \cs{use_none:nnn}. The test is similar to \cs{tl_if_in:nnTF}. The
+% token list is empty if and only if |#2| does not contain the opening
+% delimiter. In that case, we are done, and put the argument (from which we
+% remove a spurious pair of delimiters coming from how we started the loop).
+% Otherwise, we go back to looping with
+% \cs{@@_expandable_grab_D:NNNwNNnnn}. The code to deal with brace stripping
+% is much the same as for the non-expandable case.
+% \begin{macrocode}
+\cs_new:Npn \@@_expandable_grab_D:nnNNNwNN #1#2#3#4#5#6 \q_@@ #7#8
+ {
+ \exp_args:No \tl_if_empty:oTF
+ { #3 { \use_none:nnn } #2 \q_@@ #5 #4 \q_@@ #5 }
+ {
+ \tl_if_blank:oTF { \use_none:nn #1#2 }
+ { \@@_put_arg_expandable:ow { \use_none:nn #1#2 } }
+ {
+ \str_if_eq:eeTF
+ { \exp_not:o { \use_none:nn #1#2 } }
+ { { \exp_not:o { \use_iii:nnnn #1#2 \q_nil } } }
+ { \@@_put_arg_expandable:ow { \use_iii:nnn #1#2 } }
+ { \@@_put_arg_expandable:ow { \use_none:nn #1#2 } }
+ }
+ #6 \q_@@ #7 #8
+ }
+ {
+ #3
+ { \@@_expandable_grab_D:NNNwNNnnn #3#4#5#6 \q_@@ #7 #8 }
+ \q_nil {#1} #2 \ERROR \q_@@ \ERROR
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}[EXP]{\@@_expandable_grab_D_alt:w}
+% \begin{macro}[EXP]{\@@_expandable_grab_D_alt:NNwNNn}
+% \begin{macro}[EXP]{\@@_expandable_grab_D_alt:Nwn}
+% When the delimiters are identical, nesting is not possible and a simplified
+% approach is used. The test concept here is the same as for the case where
+% the delimiters are different but there cannot be any nesting.
+% \begin{macrocode}
+\cs_new:Npn \@@_expandable_grab_D_alt:w #1 \q_@@ #2#3
+ { #2 { \@@_expandable_grab_D_alt:NNwNNn #1 \q_@@ #2 #3 } }
+\cs_set_protected:Npn \@@_tmp:w #1
+ {
+ \cs_new:Npn \@@_expandable_grab_D_alt:NNwNNn ##1##2##3 \q_@@ ##4##5##6
+ {
+ \str_if_eq:nnTF {##6} {##2}
+ {
+ \str_if_eq:onTF
+ { ##1 { } ##6 ##2 ##2 }
+ { { } ##2 }
+ }
+ { \use_ii:nn }
+ {
+ ##1
+ { \@@_expandable_grab_D_alt:NNwn ##4 ##5 ##3 \q_@@ }
+ ##6 \ERROR
+ }
+ { ##3 {#1} \q_@@ ##4 ##5 {##6} }
+ }
+ }
+\exp_args:No \@@_tmp:w { \c_novalue_tl }
+\cs_new:Npn \@@_expandable_grab_D_alt:NNwn #1#2#3 \q_@@ #4
+ {
+ \tl_if_blank:oTF { \use_none:n #4 }
+ { \@@_put_arg_expandable:ow { \use_none:n #4 } }
+ {
+ \str_if_eq:eeTF
+ { \exp_not:o { \use_none:n #4 } }
+ { { \exp_not:o { \use_ii:nnn #4 \q_nil } } }
+ { \@@_put_arg_expandable:ow { \use_ii:nn #4 } }
+ { \@@_put_arg_expandable:ow { \use_none:n #4 } }
+ }
+ #3 \q_@@ #1 #2
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}[EXP]{\@@_expandable_grab_E:w, \@@_expandable_grab_E_long:w}
+% \begin{macro}[EXP]{\@@_expandable_grab_E_aux:w}
+% \begin{macro}[EXP]{\@@_expandable_grab_E_test:nnw}
+% \begin{macro}[EXP]{\@@_expandable_grab_E_loop:nnnNNw}
+% \begin{macro}[EXP]{\@@_expandable_grab_E_find:w}
+% \begin{macro}[EXP]{\@@_expandable_grab_E_find:nnw}
+% \begin{macro}[EXP]{\@@_expandable_grab_E_end:nnw}
+% We keep track of long/short by placing the appropriate grabber as
+% the third token after \cs{q_@@}; it is eventually removed by the
+% \texttt{end:nnw} auxiliary. The \texttt{aux:w} auxiliary will be
+% called repeatedly with two arguments: the set
+% of pairs \meta{parser} \meta{token}, and the set of arguments found
+% so far (initially all |{-NoValue-}|). At each step, grab what
+% follows in the input stream then call the \texttt{loop:nnnNNw}
+% auxiliary to compare it with each possible embellishment in turn.
+% This auxiliary's |#1| is what was found in the input, |#2| collects
+% \meta{parser} \meta{token} pairs that did not match, |#3| collects
+% the corresponding arguments found previously, |#4| and |#5| is the
+% current pair, |#6| is the remaining pairs, |#7| is empty or two
+% \cs{q_nil}, and |#8| is the current argument. If none of the pairs
+% matched (determined by \cs{quark_if_nil:NTF}) then call the
+% \texttt{end} auxiliary to stop looking for embellishments,
+% remembering to put what was grabbed in the input back where it
+% belongs, and storing the arguments found just before \cs{q_@@}. If
+% the current argument |#8| is not |-NoValue-| or if the input |#1|
+% does not match |#5| (see \texttt{t}-type arguments below for a
+% similar \cs{str_if_eq:onTF} test) then carry on the loop.
+% Otherwise, we found a new embellishment: grab the corresponding
+% argument in the input using the \texttt{find:w} auxiliary. To avoid
+% losing braces around that auxiliary's argument we include a
+% space, which will be eliminated in the next loop through
+% embellishments.
+% \begin{macrocode}
+\cs_new:Npn \@@_expandable_grab_E:w #1 \q_@@ #2#3
+ { \@@_expandable_grab_E_aux:w #1 \q_@@ #2 #3 #3 }
+\cs_new:Npn \@@_expandable_grab_E_long:w #1 \q_@@ #2#3
+ { \@@_expandable_grab_E_aux:w #1 \q_@@ #2 #3 #2 }
+\cs_new:Npn \@@_expandable_grab_E_aux:w #1 \q_@@ #2#3#4
+ { #2 { \@@_expandable_grab_E_test:nnw #1 \q_@@ #2 #3 #4 } }
+\cs_new:Npn \@@_expandable_grab_E_test:nnw #1#2#3 \q_@@ #4#5#6#7
+ {
+ \@@_expandable_grab_E_loop:nnnNNw {#7} { } { }
+ #1 \q_nil \q_nil \q_nil \q_mark #2 \q_nil
+ #3 \q_@@ #4 #5 #6
+ }
+\cs_new:Npn \@@_expandable_grab_E_loop:nnnNNw
+ #1#2#3#4#5#6 \q_nil #7 \q_mark #8
+ {
+ \quark_if_nil:NTF #4
+ { \@@_expandable_grab_E_end:nnw {#1} {#3} }
+ {
+ \tl_if_novalue:nTF {#8}
+ { \str_if_eq:onTF { #4 { } #1 #5 } {#5} }
+ { \use_ii:nn }
+ { \@@_expandable_grab_E_find:w { #2 #4 #5 #6 } {#3} ~ }
+ {
+ \@@_expandable_grab_E_loop:nnnNNw
+ {#1} { #2 #4 #5 } { #3 {#8} }
+ #6 \q_nil #7 \q_mark
+ }
+ }
+ }
+\cs_new:Npn \@@_expandable_grab_E_find:w #1 \q_@@ #2#3#4
+ { #4 { \@@_expandable_grab_E_find:nnw #1 \q_@@ #2 #3 #4 } }
+\cs_new:Npn \@@_expandable_grab_E_find:nnw #1#2#3 \q_nil #4 \q_@@ #5#6#7#8
+ { \@@_expandable_grab_E_aux:w {#1} { #2 {#8} #3 } #4 \q_@@ #5 #6 #7 }
+\cs_new:Npn \@@_expandable_grab_E_end:nnw #1#2#3 \q_@@ #4#5#6
+ { #3 #2 \q_@@ #4 #5 {#1} }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}[EXP]{\@@_expandable_grab_m:w, \@@_expandable_grab_m_long:w}
+% \begin{macro}[EXP]{\@@_expandable_grab_m_aux:wNn}
+% The mandatory case is easy: find the auxiliary after the \cs{q_@@},
+% and use it directly to grab the argument, then correctly position
+% the argument before \cs{q_@@}.
+% \begin{macrocode}
+\cs_new:Npn \@@_expandable_grab_m:w #1 \q_@@ #2#3
+ { #3 { \@@_expandable_grab_m_aux:wNn #1 \q_@@ #2 #3 } }
+\cs_new:Npn \@@_expandable_grab_m_long:w #1 \q_@@ #2#3
+ { #2 { \@@_expandable_grab_m_aux:wNn #1 \q_@@ #2 #3 } }
+\cs_new:Npn \@@_expandable_grab_m_aux:wNn #1 \q_@@ #2#3#4
+ { #1 {#4} \q_@@ #2 #3 }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}[EXP]{\@@_expandable_grab_R:w}
+% \begin{macro}[EXP]{\@@_expandable_grab_R_aux:NNNwNNn}
+% Much the same as for the \texttt{D}-type argument, with only the lead-off
+% function varying.
+% \begin{macrocode}
+\cs_new:Npn \@@_expandable_grab_R:w #1 \q_@@ #2#3
+ { #2 { \@@_expandable_grab_R_aux:NNNwNNn #1 \q_@@ #2#3 } }
+\cs_set_protected:Npn \@@_tmp:w #1
+ {
+ \cs_new:Npn \@@_expandable_grab_R_aux:NNNwNNn ##1##2##3##4 \q_@@ ##5##6##7
+ {
+ \str_if_eq:nnTF {##7} {##2}
+ {
+ \str_if_eq:onTF
+ { ##1 { } { } ##7 ##2 \q_@@ ##3 }
+ { { } {##2} { } }
+ }
+ { \use_ii:nn }
+ {
+ ##1
+ { \@@_expandable_grab_D:NNNwNNnnn ##1##2##3##4 \q_@@ ##5##6 }
+ \q_nil { } ##2 \ERROR \q_@@ \ERROR
+ }
+ {
+ \__kernel_msg_expandable_error:nnff
+ { ltcmd } { missing-required }
+ { \exp_args:Nf \tl_trim_spaces:n { \token_to_str:N ##5 } }
+ { \tl_to_str:n {##2} }
+ ##4 {#1} \q_@@ ##5 ##6 {##7}
+ }
+ }
+ }
+\exp_args:No \@@_tmp:w { \c_novalue_tl }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}[EXP]{\@@_expandable_grab_R_alt:w}
+% \begin{macro}[EXP]{\@@_expandable_grab_R_alt_aux:NNwNNn}
+% When the delimiters are identical, nesting is not possible and a simplified
+% approach is used. The test concept here is the same as for the case where
+% the delimiters are different.
+% \begin{macrocode}
+\cs_new:Npn \@@_expandable_grab_R_alt:w #1 \q_@@ #2#3
+ { #2 { \@@_expandable_grab_R_alt_aux:NNwNNn #1 \q_@@ #2#3 } }
+\cs_set_protected:Npn \@@_tmp:w #1
+ {
+ \cs_new:Npn \@@_expandable_grab_R_alt_aux:NNwNNn ##1##2##3 \q_@@ ##4##5##6
+ {
+ \str_if_eq:nnTF {##6} {##2}
+ {
+ \str_if_eq:onTF
+ { ##1 { } ##6 ##2 ##2 }
+ { { } ##2 }
+ }
+ { \use_ii:nn }
+ {
+ ##1
+ { \@@_expandable_grab_D_alt:NNwn ##4 ##5 ##3 \q_@@ }
+ ##6 \ERROR
+ }
+ {
+ \__kernel_msg_expandable_error:nnff
+ { ltcmd } { missing-required }
+ { \exp_args:Nf \tl_trim_spaces:n { \token_to_str:N ##4 } }
+ { \tl_to_str:n {##2} }
+ ##3 {#1} \q_@@ ##4 ##5 {##6}
+ }
+ }
+ }
+\exp_args:No \@@_tmp:w { \c_novalue_tl }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}[EXP]{\@@_expandable_grab_t:w}
+% \begin{macro}[EXP]{\@@_expandable_grab_t_aux:NNwn}
+% As for a \texttt{D}-type argument, here we compare the grabbed tokens using
+% the only parser we have in order to work out if |#2| is exactly equal to
+% the output of the grabber.
+% \begin{macrocode}
+\cs_new:Npn \@@_expandable_grab_t:w #1 \q_@@ #2#3
+ { #2 { \@@_expandable_grab_t_aux:NNwn #1 \q_@@ #2 #3 } }
+\cs_new:Npn \@@_expandable_grab_t_aux:NNwn #1#2#3 \q_@@ #4#5#6
+ {
+ \str_if_eq:onTF { #1 { } #6 #2 } {#2}
+ { #3 { \BooleanTrue } \q_@@ #4 #5 }
+ { #3 { \BooleanFalse } \q_@@ #4 #5 {#6} }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}[EXP]
+% {\@@_put_arg_expandable:nw, \@@_put_arg_expandable:ow}
+% A useful helper, to store arguments when they are ready.
+% \begin{macrocode}
+\cs_new:Npn \@@_put_arg_expandable:nw #1#2 \q_@@ { #2 {#1} \q_@@ }
+\cs_generate_variant:Nn \@@_put_arg_expandable:nw { o }
+% \end{macrocode}
+% \end{macro}
+%
+% \subsection{Argument processors}
+%
+% \begin{macro}{\@@_bool_reverse:N}
+% A simple reversal.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_bool_reverse:N #1
+ {
+ \bool_if:NTF #1
+ { \tl_set:Nn \ProcessedArgument { \c_false_bool } }
+ { \tl_set:Nn \ProcessedArgument { \c_true_bool } }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{variable}{\l_@@_split_list_seq, \l_@@_split_list_tl}
+% \begin{macro}{\@@_split_list:nn}
+% \begin{macro}{\@@_split_list_multi:nn, \@@_split_list_multi:nV}
+% \begin{macro}{\@@_split_list_single:Nn}
+% Splitting can take place either at a single token or at a longer
+% identifier. To deal with single active tokens, a two-part procedure is
+% needed.
+% \begin{macrocode}
+\seq_new:N \l_@@_split_list_seq
+\tl_new:N \l_@@_split_list_tl
+\cs_new_protected:Npn \@@_split_list:nn #1#2
+ {
+ \tl_if_single:nTF {#1}
+ {
+ \token_if_cs:NTF #1
+ { \@@_split_list_multi:nn {#1} {#2} }
+ { \@@_split_list_single:Nn #1 {#2} }
+ }
+ { \@@_split_list_multi:nn {#1} {#2} }
+ }
+\cs_new_protected:Npn \@@_split_list_multi:nn #1#2
+ {
+ \seq_set_split:Nnn \l_@@_split_list_seq {#1} {#2}
+ \tl_clear:N \ProcessedArgument
+ \seq_map_inline:Nn \l_@@_split_list_seq
+ { \tl_put_right:Nn \ProcessedArgument { {##1} } }
+ }
+\cs_generate_variant:Nn \@@_split_list_multi:nn { nV }
+\group_begin:
+\char_set_catcode_active:N \^^@
+\cs_new_protected:Npn \@@_split_list_single:Nn #1#2
+ {
+ \tl_set:Nn \l_@@_split_list_tl {#2}
+ \group_begin:
+ \char_set_lccode:nn { `\^^@ } { `#1 }
+ \tex_lowercase:D
+ {
+ \group_end:
+ \tl_replace_all:Nnn \l_@@_split_list_tl { ^^@ }
+ } {#1}
+ \@@_split_list_multi:nV {#1} \l_@@_split_list_tl
+ }
+\group_end:
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{variable}
+%
+% \begin{macro}{\@@_split_argument:nnn}
+% \begin{macro}{\@@_split_argument_aux:nnnn}
+% \begin{macro}[EXP]{\@@_split_argument_aux:n}
+% \begin{macro}[rEXP]{\@@_split_argument_aux:wn}
+% Splitting to a known number of items is a special version of splitting
+% a list, in which the limit is hard-coded and where there will always be
+% exactly the correct number of output items. An auxiliary function is
+% used to save on working out the token list length several times.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_split_argument:nnn #1#2#3
+ {
+ \@@_split_list:nn {#2} {#3}
+ \exp_args:Nf \@@_split_argument_aux:nnnn
+ { \tl_count:N \ProcessedArgument }
+ {#1} {#2} {#3}
+ }
+\cs_new_protected:Npn \@@_split_argument_aux:nnnn #1#2#3#4
+ {
+ \int_compare:nNnF {#1} = { #2 + 1 }
+ {
+ \int_compare:nNnTF {#1} > { #2 + 1 }
+ {
+ \tl_set:Nx \ProcessedArgument
+ {
+ \exp_last_unbraced:NnNo
+ \@@_split_argument_aux:n
+ { #2 + 1 }
+ \use_none_delimit_by_q_stop:w
+ \ProcessedArgument
+ \q_stop
+ }
+ \__kernel_msg_error:nnxxx { ltcmd } { split-excess-tokens }
+ { \tl_to_str:n {#3} } { \int_eval:n { #2 + 1 } }
+ { \tl_to_str:n {#4} }
+ }
+ {
+ \tl_put_right:Nx \ProcessedArgument
+ {
+ \prg_replicate:nn { #2 + 1 - (#1) }
+ { { \exp_not:V \c_novalue_tl } }
+ }
+ }
+ }
+ }
+% \end{macrocode}
+% Auxiliaries to leave exactly the correct number of arguments in
+% \cs{ProcessedArgument}.
+% \begin{macrocode}
+\cs_new:Npn \@@_split_argument_aux:n #1
+ { \prg_replicate:nn {#1} { \@@_split_argument_aux:wn } }
+\cs_new:Npn \@@_split_argument_aux:wn #1 \use_none_delimit_by_q_stop:w #2
+ {
+ \exp_not:n { {#2} }
+ #1
+ \use_none_delimit_by_q_stop:w
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_trim_spaces:n}
+% This one is almost trivial.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_trim_spaces:n #1
+ { \tl_set:Nx \ProcessedArgument { \tl_trim_spaces:n {#1} } }
+% \end{macrocode}
+% \end{macro}
+%
+% \subsection{Access to the argument specification}
+%
+% \begin{macro}{\@@_get_arg_spec_error:N, \@@_get_arg_spec_error:n}
+% \begin{macro}{\@@_get_arg_spec_error_aux:n}
+% Provide an informative error when trying to get the argument
+% specification of a non-\pkg{xparse} command or environment.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_get_arg_spec_error:N #1
+ {
+ \bool_set_false:N \l_@@_environment_bool
+ \tl_set:Nn \l_@@_fn_tl {#1}
+ \@@_get_arg_spec_error_aux:n { \cs_if_exist:NTF #1 }
+ }
+\cs_new_protected:Npn \@@_get_arg_spec_error:n #1
+ {
+ \bool_set_true:N \l_@@_environment_bool
+ \str_set:Nx \l_@@_environment_str {#1}
+ \@@_get_arg_spec_error_aux:n
+ { \cs_if_exist:cTF { \l_@@_environment_str } }
+ }
+\cs_new_protected:Npn \@@_get_arg_spec_error_aux:n #1
+ {
+ #1
+ {
+ \__kernel_msg_error:nnx { ltcmd } { non-xparse }
+ { \@@_environment_or_command: }
+ }
+ {
+ \__kernel_msg_error:nnx { ltcmd } { unknown }
+ { \@@_environment_or_command: }
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_get_arg_spec:NTF}
+% If the command is not an \pkg{xparse} command, complain. If it is,
+% its second \enquote{item} is the argument specification.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_get_arg_spec:NTF #1#2#3
+ {
+ \@@_cmd_if_xparse:NTF #1
+ {
+ \tl_set:Nx \ArgumentSpecification { \tl_item:Nn #1 { 2 } }
+ #2
+ }
+ {#3}
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% Rolling forward from 2020-10-01 is tricky because the entire |ltcmd|
+% module is new, but the user-level commands have the same name, so only
+% these will clash. To work around that, in |latexrelease| mode we will
+% (temporarily) disable \cs{__kernel_chk_if_free_cs:N} for this final
+% part of the code, then restore at the end.
+% \begin{macrocode}
+%<latexrelease>\cs_new_eq:NN \@@_chk_if_free_cs:N \__kernel_chk_if_free_cs:N
+%<latexrelease>\cs_gset_eq:NN \__kernel_chk_if_free_cs:N \use_none:n
+% \end{macrocode}
+%
+% \begin{variable}{\ArgumentSpecification}
+% \begin{macrocode}
+\tl_new:N \ArgumentSpecification
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{\@@_get_arg_spec:N}
+% \begin{macro}{\@@_get_arg_spec:n}
+% Recovering the argument specification is now trivial.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_get_arg_spec:N #1
+ {
+ \@@_get_arg_spec:NTF #1 { }
+ { \@@_get_arg_spec_error:N #1 }
+ }
+\cs_new_protected:Npn \@@_get_arg_spec:n #1
+ {
+ \exp_args:Nc \@@_get_arg_spec:NTF
+ { environment~ \tl_to_str:n {#1} }
+ { }
+ { \@@_get_arg_spec_error:n {#1} }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_show_arg_spec:N}
+% \begin{macro}{\@@_show_arg_spec:n}
+% Showing the argument specification simply means finding it and then
+% calling the \cs{tl_show:N} function.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_show_arg_spec:N #1
+ {
+ \@@_get_arg_spec:NTF #1
+ { \tl_show:N \ArgumentSpecification }
+ { \@@_get_arg_spec_error:N #1 }
+ }
+\cs_new_protected:Npn \@@_show_arg_spec:n #1
+ {
+ \exp_args:Nc \@@_get_arg_spec:NTF
+ { environment~ \tl_to_str:n {#1} }
+ { \tl_show:N \ArgumentSpecification }
+ { \@@_get_arg_spec_error:n {#1} }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Utilities}
+%
+% \begin{macro}{\@@_check_definable:nNT, \@@_check_definable_aux:nN}
+% Check that a token list is appropriate as a first argument of
+% \cs{NewDocumentCommand} and similar functions and otherwise
+% produce an error. First trim whitespace to allow for spaces around
+% the actual command to be defined. If the result has multiple
+% tokens, it is not a valid argument. The single token is a control
+% sequence exactly if its string representation has more than one
+% character (using \cs{token_to_str:N} rather than \cs{tl_to_str:n}
+% to avoid problems with macro parameter characters, and setting
+% \cs{tex_escapechar:D} to prevent it from being non-printable).
+% Finally, check for an active character: this is done by lowercasing
+% the token to fix its character code (arbitrarily to that of~|?|)
+% and comparing the result to an active~|?|. Both control sequences
+% and active characters are valid arguments, and non-active character
+% tokens are not. In all cases, the group opened to keep assignments
+% local must be closed.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_check_definable:nNT #1
+ { \tl_trim_spaces_apply:nN {#1} \@@_check_definable_aux:nN }
+\group_begin:
+ \char_set_catcode_active:n { `? }
+ \cs_new_protected:Npn \@@_check_definable_aux:nN #1#2
+ {
+ \group_begin:
+ \tl_if_single_token:nTF {#1}
+ {
+ \int_set:Nn \tex_escapechar:D { 92 }
+ \exp_args:Nx \tl_if_empty:nTF
+ { \exp_args:No \str_tail:n { \token_to_str:N #1 } }
+ {
+ \exp_args:Nx \char_set_lccode:nn
+ { ` \str_head:n {#1} } { `? }
+ \tex_lowercase:D { \tl_if_eq:nnTF {#1} } { ? }
+ { \group_end: \use_iii:nnn }
+ { \group_end: \use_i:nnn }
+ }
+ { \group_end: \use_iii:nnn }
+ }
+ { \group_end: \use_ii:nnn }
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { not-definable }
+ { \tl_to_str:n {#1} } { \token_to_str:N #2 }
+ }
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { not-one-token }
+ { \tl_to_str:n {#1} } { \token_to_str:N #2 }
+ }
+ }
+\group_end:
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_token_if_cs:NTF}
+% Based on the definition of \cs{@@_check_definable_aux:nN} above, but
+% only checks for an actual control sequence (\emph{i.e.},
+% \cs[no-index]{\meta{anything}}). \cs{tex_escapechar:D} is
+% temporarily changed to a known value and then it checks if
+% |\string#1| contains more than one character: if it does, it's a
+% control sequence. This test differs from \cs{token_if_cs:NTF} for
+% example in \verb|\token_if_cs:NTF \c_group_begin_token {T}{F}|,
+% where \cs{token_if_cs:NTF} returns false.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_token_if_cs:NTF #1
+ {
+ \group_begin:
+ \int_set:Nn \tex_escapechar:D { 92 }
+ \exp_args:Nx \tl_if_empty:nTF
+ { \exp_args:No \str_tail:n { \token_to_str:N #1 } }
+ { \group_end: \use_ii:nn }
+ { \group_end: \use_i:nn }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_tl_mapthread_function:NNN, \@@_tl_mapthread_function:nnN}
+% \begin{macro}{\@@_tl_mapthread_loop:w}
+% Analogue of \cs{seq_mapthread_function:NNN} for token lists.
+% \begin{macrocode}
+\cs_new:Npn \@@_tl_mapthread_function:NNN #1#2#3
+ {
+ \exp_after:wN \exp_after:wN
+ \exp_after:wN \@@_tl_mapthread_loop:w
+ \exp_after:wN \exp_after:wN
+ \exp_after:wN #3
+ \exp_after:wN #1
+ \exp_after:wN \q_recursion_tail
+ \exp_after:wN \q_mark
+ #2
+ \q_recursion_tail
+ \q_recursion_stop
+ }
+\cs_new:Npn \@@_tl_mapthread_function:nnN #1#2#3
+ {
+ \@@_tl_mapthread_loop:w #3
+ #1 \q_recursion_tail \q_mark
+ #2 \q_recursion_tail \q_recursion_stop
+ }
+\cs_new:Npn \@@_tl_mapthread_loop:w #1#2#3 \q_mark #4
+ {
+ \quark_if_recursion_tail_stop:n {#2}
+ \quark_if_recursion_tail_stop:n {#4}
+ #1 {#2} {#4}
+ \@@_tl_mapthread_loop:w #1#3 \q_mark
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_cmd_if_xparse:NTF}
+% \begin{macro}{\@@_cmd_if_xparse_aux:N}
+% To determine whether the command is an \pkg{xparse} command check
+% that its |arg_spec| is empty (this also excludes non-macros) and
+% that its |replacement_spec| starts with either \cs{@@_start:nNNnnn}
+% (non-expandable command) or \cs{@@_start_expandable:nNNNNn}
+% (expandable command) or \cs{@@_start_env:nnnnn} (environment).
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_cmd_if_xparse:NTF #1
+ {
+ \exp_args:Nf \str_case_e:nnTF
+ {
+ \exp_args:Nf \tl_if_empty:nT { \cs_argument_spec:N #1 }
+ {
+ \exp_last_unbraced:Nf \@@_cmd_if_xparse_aux:w
+ { \cs_replacement_spec:N #1 } ~ \q_stop
+ }
+ }
+ {
+ { \token_to_str:N \@@_start:nNNnnn } { }
+ { \token_to_str:N \@@_start_expandable:nNNNNn } { }
+ { \token_to_str:N \@@_start_env:nnnnn } { }
+ }
+ }
+\cs_new:Npn \@@_cmd_if_xparse_aux:w #1 ~ #2 \q_stop {#1}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_peek_nonspace:NTF, \@@_peek_nonspace_remove:NTF, \@@_peek_nonspace_aux:nNNTF}
+% Collect spaces in a loop, and put the collected spaces back in the
+% false branch of a call to \cs{peek_meaning:NTF} or
+% \cs{peek_meaning_remove:NTF}.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_peek_nonspace:NTF
+ { \@@_peek_nonspace_aux:nNNTF { } \@@_peek_meaning:NTF }
+\cs_new_protected:Npn \@@_peek_nonspace_remove:NTF
+ { \@@_peek_nonspace_aux:nNNTF { } \@@_peek_meaning_remove:NTF }
+\cs_new_protected:Npn \@@_peek_nonspace_aux:nNNTF #1#2#3#4#5
+ {
+ \peek_meaning_remove:NTF \c_space_token
+ { \@@_peek_nonspace_aux:nNNTF { #1 ~ } #2 #3 {#4} {#5} }
+ { #2 #3 { #4 } { #5 #1 } }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_peek_meaning:NTF, \@@_peek_meaning_remove:NTF}
+% \begin{macro}{\@@_peek_cs_check_equal:NNN, \@@_peek_meaning_aux:NNTF, \@@_peek_true_remove:NNw}
+% Peek ahead for a token with a given meaning. In case the search
+% token is a control sequence, also check that the \meta{csname} is
+% the same as the control sequence peeked at. This extra verification
+% is necessary when the command is delimited by control sequence tokens
+% (as opposed to character tokens), and we want the the exact same
+% control sequence to match.
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_peek_meaning:NTF
+ { \@@_peek_meaning_aux:NNTF \c_false_bool }
+\cs_new_protected:Npn \@@_peek_meaning_remove:NTF
+ { \@@_peek_meaning_aux:NNTF \c_true_bool }
+\cs_new_protected:Npn \@@_peek_meaning_aux:NNTF #1#2#3#4
+ {
+ \tl_set:Nn \l_@@_tmpa_tl {#3}
+ \tl_set:Nn \l_@@_tmpb_tl {#4}
+ \peek_meaning:NTF #2
+ {
+ \token_if_eq_meaning:NNTF #2 \c_group_begin_token
+ { \@@_peek_true_remove:Nw #1 }
+ {
+ \@@_token_if_cs:NTF #2
+ { \@@_peek_cs_check_equal:NNN #1 #2 }
+ { \@@_peek_true_remove:Nw #1 }
+ }
+ }
+ { \l_@@_tmpb_tl }
+ }
+\cs_new_protected:Npn \@@_peek_cs_check_equal:NNN #1#2#3
+ {
+ \str_if_eq:nnTF {#2} {#3}
+ { \@@_peek_true_remove:Nw #1 }
+ { \l_@@_tmpb_tl }
+ #3
+ }
+\cs_new_protected:Npn \@@_peek_true_remove:Nw #1
+ {
+ \bool_if:NTF #1
+ {
+ \tex_afterassignment:D \l_@@_tmpa_tl
+ \cs_set_eq:NN \@@_tmp:w
+ }
+ { \l_@@_tmpa_tl }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Messages}
+%
+% \begin{variable}{\c_@@_ignore_def_tl}
+% \begin{macrocode}
+\tl_const:Nn \c_@@_ignore_def_tl
+ { \\ \\ LaTeX~will~ignore~this~entire~definition. }
+% \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{\@@_environment_or_command:}
+% Two texts used in several messages.
+% \begin{macrocode}
+\cs_new:Npn \@@_environment_or_command:
+ {
+ \bool_if:NTF \l_@@_environment_bool
+ { environment ~ ' \l_@@_environment_str ' }
+ {
+ command ~ '
+ \exp_args:Nf \tl_trim_spaces:n
+ { \exp_after:wN \token_to_str:N \l_@@_fn_tl }
+ '
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% Some messages intended as errors when defining commands/environments.
+% \begin{macrocode}
+\__kernel_msg_new:nnnn { ltcmd } { arg-after-body }
+ { In~the~definition~of~#1,~b~(body)~argument~must~be~last. }
+ {
+ The~'body'~argument~type~is~followed~by~'#2'~in~the~argument~
+ specification~of~the~#1.~This~is~not~allowed.
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { bad-arg-spec }
+ { Bad~argument~specification~'#2'~for~#1. }
+ {
+ The~argument~specification~provided~was~not~valid:~
+ one~or~more~mandatory~pieces~of~information~were~missing.
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { command-already-defined }
+ { Command~'#1'~already~defined! }
+ {
+ You~have~used~#2~
+ with~a~command~that~already~has~a~definition. \\ \\
+ The~existing~definition~of~'#1'~will~not~be~altered.
+ }
+\__kernel_msg_new:nnnn { ltcmd } { command-not-yet-defined }
+ { Command ~'#1'~not~yet~defined! }
+ {
+ You~have~used~#2~
+ with~a~command~that~was~never~defined.
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { environment-already-defined }
+ { Environment~'#1'~already~defined! }
+ {
+ You~have~used~\NewDocumentEnvironment
+ with~an~environment~that~already~has~a~definition. \\ \\
+ The~existing~definition~of~'#1'~will~not~be~altered.
+ }
+\__kernel_msg_new:nnnn { ltcmd } { environment-not-yet-defined }
+ { Environment~'#1'~not~yet~defined! }
+ {
+ You~have~used~\RenewDocumentEnvironment
+ with~an~environment~that~was~never~defined.
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { expandable-ending-optional }
+ {
+ Argument~specification~'#2'~for~expandable~command~'#1'~
+ ends~with~optional~argument.
+ }
+ {
+ Expandable~commands~must~have~a~final~mandatory~argument~
+ (or~no~arguments~at~all).~You~cannot~have~a~terminal~optional~
+ argument~with~expandable~commands.
+ }
+\__kernel_msg_new:nnnn { ltcmd } { inconsistent-long }
+ { Inconsistent~long~arguments~for~expandable~command~'#1'. }
+ {
+ The~arguments~for~an~expandable~command~must~not~involve~short~
+ arguments~after~long~arguments.~You~have~tried~to~mix~the~two~types.
+ }
+\__kernel_msg_new:nnnn { ltcmd } { invalid-command-arg }
+ { Argument~type~'#2'~not~available~for~#1. }
+ {
+ The~letter~'#2'~can~only~be~used~in~environment~argument~
+ specifications,~not~for~commands.
+ \\ \\
+ LaTeX~will~ignore~this~entire~definition.
+ }
+\__kernel_msg_new:nnnn { ltcmd } { invalid-expandable-argument-type }
+ { Argument~type~'#2'~not~available~for~expandable~command~'#1'. }
+ {
+ The~letter~'#2'~specifies~an~argument~type~which~cannot~be~used~
+ in~an~expandable~command.
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { invalid-after-optional-expandably }
+ {
+ Argument~type~'#2'~not~available~after~optional~argument~
+ for~expandable~command~'#1'.
+ }
+ {
+ The~letter~'#2'~specifies~an~argument~type~which~cannot~be~used~
+ in~an~expandable~command~after~an~optional~argument.
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { non-trailing-obey-spaces }
+ { Prefix~'!'~used~before~mandatory~argument~'#2'~of~#1. }
+ {
+ The~prefix~'!'~can~only~apply~to~trailing~optional~arguments.
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { not-definable }
+ { First~argument~of~'#2'~must~be~a~command. }
+ {
+ The~first~argument~of~'#2'~should~be~the~document~command~that~will~
+ be~defined.~The~provided~argument~'#1'~is~a~character.~Perhaps~a~
+ backslash~is~missing?
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { not-one-token }
+ { First~argument~of~'#2'~must~be~a~command. }
+ {
+ The~first~argument~of~'#2'~should~be~the~document~command~that~will~
+ be~defined.~The~provided~argument~'#1'~contains~more~than~one~
+ token.~Perhaps~a~backslash~is~missing?
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { not-single-token }
+ {
+ Argument~delimiter~'#2'~for~the~#1~should~be~
+ a~single~non-space~token.
+ }
+ {
+ The~argument~specification~provided~was~not~valid:~in~a~place~
+ where~a~single~token~is~required,~LaTeX~found~'#2'.
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { forbidden-implicit-group-token }
+ { Argument~delimiter~'#2'~for~the~#1~is~not~allowed. }
+ {
+ The~argument~specification~provided~was~not~valid:~the~implicit~
+ #3-group~token~'#2'~is~not~allowed~as~an~argument~delimiter.
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { processor-in-expandable }
+ { Argument~processor~'>{#2}'~cannot~be~used~for~the~expandable~command~'#1'. }
+ {
+ The~argument~specification~for~#1~contains~a~processor~function:~
+ this~is~only~supported~for~standard~robust~commands.
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { too-many-arguments }
+ { Too~many~arguments~in~argument~specification~'#2'~of~#1. }
+ {
+ The~argument~specification~provided~has~more~than~9~arguments.~
+ This~cannot~be~implemented.
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { two-markers }
+ { Two~'#2'~apply~to~the~same~argument~in~argument~specification~of~#1. }
+ {
+ The~argument~specification~provided~has~two~markers~'#2'~applying~
+ to~the~same~argument;~these~are~redundant.
+ }
+\__kernel_msg_new:nnnn { ltcmd } { unknown-argument-type }
+ { Unknown~argument~type~'#2'~for~the~#1. }
+ {
+ The~letter~'#2'~does~not~specify~a~known~argument~type.
+ \c_@@_ignore_def_tl
+ }
+\__kernel_msg_new:nnnn { ltcmd } { xparse-argument-type }
+ { Deprecated~argument~type~'#2'~for~the~#1~requires~xparse. }
+ {
+ The~letter~'#2'~specifies~a~known~argument~type~that~requires~
+ the~xparse~package.
+ \c_@@_ignore_def_tl
+ }
+% \end{macrocode}
+%
+% Errors when using commands/environments. The \texttt{if-boolean}
+% message is always used in expandable errors. The
+% \texttt{loop-in-defaults} and \texttt{missing-required} messages can
+% be expandable or not expandable.
+% \begin{macrocode}
+\__kernel_msg_new:nnn { ltcmd } { if-boolean }
+ { Invalid~use~\iow_char:N\\IfBooleanTF~{#1} }
+\__kernel_msg_new:nnnn { ltcmd } { loop-in-defaults }
+ { Defaults~of~#1~have~circular~dependency. }
+ {
+ The~default~values~of~two~or~more~arguments~of~the~#1~
+ depend~on~each~other~in~a~way~that~cannot~be~resolved.
+ }
+\__kernel_msg_new:nnnn { ltcmd } { missing-required }
+ { Missing~required~argument~for~#1. }
+ {
+ The~current~#1~expects~an~argument~starting~with~'#2'.~
+ LaTeX~did~not~find~it,~and~will~insert~a~default~value~to~be~processed.
+ }
+\__kernel_msg_new:nnnn { ltcmd } { non-xparse }
+ { \str_uppercase:n #1~not~defined~using~xparse. }
+ {
+ You~have~asked~for~the~argument~specification~for~the~#1,~
+ but~this~was~not~defined~using~xparse.
+ }
+\__kernel_msg_new:nnnn { ltcmd } { split-excess-tokens }
+ { Too~many~'#1'~tokens~when~trying~to~split~argument. }
+ {
+ LaTeX~was~asked~to~split~the~input~'#3'~
+ at~each~occurrence~of~the~token~'#1',~up~to~a~maximum~of~#2~parts.~
+ There~were~too~many~'#1'~tokens.
+ }
+\__kernel_msg_new:nnnn { ltcmd } { unknown }
+ { Unknown~document~#1. }
+ {
+ You~have~asked~for~the~argument~specification~for~the~#1,~
+ but~it~is~not~defined.
+ }
+\__kernel_msg_new:nnnn { ltcmd } { verbatim-newline }
+ { Verbatim~argument~of~#1~ended~by~end~of~line. }
+ {
+ The~verbatim~argument~of~the~#1~cannot~contain~more~than~one~line,~
+ but~the~end~
+ of~the~current~line~has~been~reached.~You~may~have~forgotten~the~
+ closing~delimiter.
+ \\ \\
+ LaTeX~will~ignore~'#2'.
+ }
+\__kernel_msg_new:nnnn { ltcmd } { verbatim-tokenized }
+ { The~verbatim~#1~cannot~be~used~inside~an~argument. }
+ {
+ The~#1~takes~a~verbatim~argument.~
+ It~may~not~appear~within~the~argument~of~another~function.~
+ It~received~an~illegal~token \tl_if_empty:nF {#3} { ~'#3' } .
+ \\ \\
+ LaTeX~will~ignore~'#2'.
+ }
+% \end{macrocode}
+%
+% Intended more for information.
+% \begin{macrocode}
+\__kernel_msg_new:nnn { ltcmd } { define-command }
+ {
+ Defining~command~#1~
+ with~sig.~'#2'~\msg_line_context:.
+ }
+\__kernel_msg_new:nnn { ltcmd } { define-environment }
+ {
+ Defining~environment~'#1'~
+ with~sig.~'#2'~\msg_line_context:.
+ }
+\__kernel_msg_new:nnn { ltcmd } { redefine-command }
+ {
+ Redefining~command~#1~
+ with~sig.~'#2'~\msg_line_context:.
+ }
+\__kernel_msg_new:nnn { ltcmd } { redefine-environment }
+ {
+ Redefining~environment~'#1'~
+ with~sig.~'#2'~\msg_line_context:.
+ }
+\__kernel_msg_new:nnn { ltcmd } { optional-mandatory }
+ {
+ Since~the~mandatory~argument~'#1'~has~the~same~delimiter~'#2'~
+ as~a~previous~optional~argument,~it~will~not~be~possible~to~
+ omit~all~optional~arguments~when~calling~this~command.
+ }
+\__kernel_msg_new:nnn { ltcmd } { unsupported-let }
+ {
+ The~command~'#1'~was~undefined~but~not~the~associated~commands~
+ '#1~code'~and/or~'#1~defaults'.~Maybe~you~tried~using~
+ \iow_char:N\\let.~This~may~lead~to~an~infinite~loop.
+ }
+% \end{macrocode}
+%
+% \subsection{User functions}
+%
+% The user functions are more or less just the internal functions
+% renamed.
+%
+% \begin{macro}{\BooleanFalse}
+% \begin{macro}{\BooleanTrue}
+% Design-space names for the Boolean values.
+% \begin{macrocode}
+\cs_new_eq:NN \BooleanFalse \c_false_bool
+\cs_new_eq:NN \BooleanTrue \c_true_bool
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\NewDocumentCommand}
+% \begin{macro}{\RenewDocumentCommand}
+% \begin{macro}{\ProvideDocumentCommand}
+% \begin{macro}{\DeclareDocumentCommand}
+% The user macros are pretty simple wrappers around the internal ones.
+% There is however a check that the first argument is a single token,
+% possibly surrounded by spaces (hence the strange \cs{use:nnn}), and
+% is definable.
+% \begin{macrocode}
+\cs_new_protected:Npn \NewDocumentCommand #1#2#3
+ {
+ \@@_check_definable:nNT {#1} \NewDocumentCommand
+ {
+ \cs_if_exist:NTF #1
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { command-already-defined }
+ { \use:nnn \token_to_str:N #1 { } }
+ { \token_to_str:N \NewDocumentCommand }
+ }
+ { \@@_declare_cmd:Nnn #1 {#2} {#3} }
+ }
+ }
+\cs_new_protected:Npn \RenewDocumentCommand #1#2#3
+ {
+ \@@_check_definable:nNT {#1} \RenewDocumentCommand
+ {
+ \cs_if_exist:NTF #1
+ { \@@_declare_cmd:Nnn #1 {#2} {#3} }
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { command-not-yet-defined }
+ { \use:nnn \token_to_str:N #1 { } }
+ { \token_to_str:N \RenewDocumentCommand }
+ }
+ }
+ }
+\cs_new_protected:Npn \ProvideDocumentCommand #1#2#3
+ {
+ \@@_check_definable:nNT {#1} \ProvideDocumentCommand
+ { \cs_if_exist:NF #1 { \@@_declare_cmd:Nnn #1 {#2} {#3} } }
+ }
+\cs_new_protected:Npn \DeclareDocumentCommand #1#2#3
+ {
+ \@@_check_definable:nNT {#1} \DeclareDocumentCommand
+ { \@@_declare_cmd:Nnn #1 {#2} {#3} }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\NewDocumentEnvironment}
+% \begin{macro}{\RenewDocumentEnvironment}
+% \begin{macro}{\ProvideDocumentEnvironment}
+% \begin{macro}{\DeclareDocumentEnvironment}
+% Very similar for environments.
+% \begin{macrocode}
+\cs_new_protected:Npn \NewDocumentEnvironment #1#2#3#4
+ {
+ \cs_if_exist:cTF {#1}
+ { \__kernel_msg_error:nnx { ltcmd } { environment-already-defined } {#1} }
+ { \@@_declare_env:nnnn {#1} {#2} {#3} {#4} }
+ }
+\cs_new_protected:Npn \RenewDocumentEnvironment #1#2#3#4
+ {
+ \cs_if_exist:cTF {#1}
+ { \@@_declare_env:nnnn {#1} {#2} {#3} {#4} }
+ { \__kernel_msg_error:nnx { ltcmd } { environment-not-yet-defined } {#1} }
+ }
+\cs_new_protected:Npn \ProvideDocumentEnvironment #1#2#3#4
+ { \cs_if_exist:cF {#1} { \@@_declare_env:nnnn {#1} {#2} {#3} {#4} } }
+\cs_new_protected:Npn \DeclareDocumentEnvironment #1#2#3#4
+ { \@@_declare_env:nnnn {#1} {#2} {#3} {#4} }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\NewExpandableDocumentCommand}
+% \begin{macro}{\RenewExpandableDocumentCommand}
+% \begin{macro}{\ProvideExpandableDocumentCommand}
+% \begin{macro}{\DeclareExpandableDocumentCommand}
+% The expandable versions are essentially the same as the basic
+% functions. The strange \cs{use:nnn} is there in case |#1| is
+% surrounded with spaces, as can happen with usual document catcodes
+% in \cs{RenewExpandableDocumentCommand} |{| |\!| |}| \ldots{}
+% \begin{macrocode}
+\cs_new_protected:Npn \NewExpandableDocumentCommand #1#2#3
+ {
+ \@@_check_definable:nNT {#1} \NewExpandableDocumentCommand
+ {
+ \cs_if_exist:NTF #1
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { command-already-defined }
+ { \use:nnn \token_to_str:N #1 { } }
+ { \token_to_str:N \NewExpandableDocumentCommand }
+ }
+ { \@@_declare_expandable_cmd:Nnn #1 {#2} {#3} }
+ }
+ }
+\cs_new_protected:Npn \RenewExpandableDocumentCommand #1#2#3
+ {
+ \@@_check_definable:nNT {#1} \RenewExpandableDocumentCommand
+ {
+ \cs_if_exist:NTF #1
+ { \@@_declare_expandable_cmd:Nnn #1 {#2} {#3} }
+ {
+ \__kernel_msg_error:nnxx { ltcmd } { command-not-yet-defined }
+ { \use:nnn \token_to_str:N #1 { } }
+ { \token_to_str:N \RenewExpandableDocumentCommand }
+ }
+ }
+ }
+\cs_new_protected:Npn \ProvideExpandableDocumentCommand #1#2#3
+ {
+ \@@_check_definable:nNT {#1} \ProvideExpandableDocumentCommand
+ {
+ \cs_if_exist:NF #1
+ { \@@_declare_expandable_cmd:Nnn #1 {#2} {#3} }
+ }
+ }
+\cs_new_protected:Npn \DeclareExpandableDocumentCommand #1#2#3
+ {
+ \@@_check_definable:nNT {#1} \DeclareExpandableDocumentCommand
+ { \@@_declare_expandable_cmd:Nnn #1 {#2} {#3} }
+ }
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\IfBooleanT, \IfBooleanF, \IfBooleanTF}
+% The logical \meta{true} and \meta{false} statements are just the
+% normal \cs{c_true_bool} and \cs{c_false_bool} so \cs{bool_if:NTF} is
+% almost enough. However, this code-level function blows up badly
+% when passed invalid input. We want \cs{IfBooleanTF} to accept a
+% single (non-space) token equal to \cs{c_true_bool} or
+% \cs{c_false_bool}, possibly surrounded by spaces. If the input is
+% blank or multiple items, jump to the error and pick the false
+% branch. If the input, ignoring spaces (we do this by omitting
+% braces in the \cs{tl_if_single_token:nF} test), is not a single
+% token then jump to the error as well. It is then safe to compare
+% the token to the two booleans, picking the appropriate branch. If
+% neither matches, we jump to the error as well.
+% \begin{macrocode}
+\cs_new:Npn \IfBooleanTF #1
+ {
+ \tl_if_single:nF {#1}
+ { \prg_break:n { \use:n } }
+ \tl_if_single_token:nF #1
+ { \prg_break:n { \use:n } }
+ \token_if_eq_meaning:NNT #1 \c_true_bool
+ { \prg_break:n { \use_ii:nnn } }
+ \token_if_eq_meaning:NNT #1 \c_false_bool
+ { \prg_break:n { \use_iii:nnn } }
+ \prg_break:n { \use:n }
+ \prg_break_point:
+ {
+ \__kernel_msg_expandable_error:nnn { ltcmd } { if-boolean } {#1}
+ \use_ii:nn
+ }
+ }
+\cs_new:Npn \IfBooleanT #1#2 { \IfBooleanTF {#1} {#2} { } }
+\cs_new:Npn \IfBooleanF #1 { \IfBooleanTF {#1} { } }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\IfNoValueT, \IfNoValueF, \IfNoValueTF}
+% Simple re-naming.
+% \begin{macrocode}
+\cs_new_eq:NN \IfNoValueF \tl_if_novalue:nF
+\cs_new_eq:NN \IfNoValueT \tl_if_novalue:nT
+\cs_new_eq:NN \IfNoValueTF \tl_if_novalue:nTF
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\IfValueT, \IfValueF, \IfValueTF}
+% Inverted logic.
+% \begin{macrocode}
+\cs_new:Npn \IfValueF { \tl_if_novalue:nT }
+\cs_new:Npn \IfValueT { \tl_if_novalue:nF }
+\cs_new:Npn \IfValueTF #1#2#3 { \tl_if_novalue:nTF {#1} {#3} {#2} }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\ProcessedArgument}
+% Processed arguments are returned using this name, which is reserved
+% here although the definition will change.
+% \begin{macrocode}
+\tl_new:N \ProcessedArgument
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\ReverseBoolean, \SplitArgument, \SplitList, \TrimSpaces}
+% Simple copies.
+% \begin{macrocode}
+\cs_new_eq:NN \ReverseBoolean \@@_bool_reverse:N
+\cs_new_eq:NN \SplitArgument \@@_split_argument:nnn
+\cs_new_eq:NN \SplitList \@@_split_list:nn
+\cs_new_eq:NN \TrimSpaces \@@_trim_spaces:n
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\ProcessList}
+% To support \cs{SplitList}.
+% \begin{macrocode}
+\cs_new_eq:NN \ProcessList \tl_map_function:nN
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\GetDocumentCommandArgSpec}
+% \begin{macro}{\GetDocumentEnvironmentArgSpec}
+% \begin{macro}{\ShowDocumentCommandArgSpec}
+% \begin{macro}{\ShowDocumentEnvironmentArgSpec}
+% More simple mappings, with a check that the argument is a single
+% control sequence or active character.
+% \begin{macrocode}
+\cs_new_protected:Npn \GetDocumentCommandArgSpec #1
+ {
+ \@@_check_definable:nNT {#1} \GetDocumentCommandArgSpec
+ { \@@_get_arg_spec:N #1 }
+ }
+\cs_new_eq:NN \GetDocumentEnvironmentArgSpec \@@_get_arg_spec:n
+\cs_new_protected:Npn \ShowDocumentCommandArgSpec #1
+ {
+ \@@_check_definable:nNT {#1} \ShowDocumentCommandArgSpec
+ { \@@_show_arg_spec:N #1 }
+ }
+\cs_new_eq:NN \ShowDocumentEnvironmentArgSpec \@@_show_arg_spec:n
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% Finally as promised, restore \cs{__kernel_chk_if_free_cs:N}:
+% \begin{macrocode}
+%<latexrelease>\cs_gset_eq:NN \__kernel_chk_if_free_cs:N \@@_chk_if_free_cs:N
+%<latexrelease>\cs_undefine:N \@@_chk_if_free_cs:N
+% \end{macrocode}
+%
+% \begin{macrocode}
+\ExplSyntaxOff
+% \end{macrocode}
+%
+% \begin{macrocode}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<latexrelease>\catcode`\^^@=\@latexrelease@catcode@null\relax
+%<latexrelease>
+%<latexrelease>\IncludeInRelease{2020/10/01}%
+%<latexrelease> {\NewDocumentCommand}{Document commands}%
+%<latexrelease>\@ifundefined{NewDocumentCommand}
+%<latexrelease> {%
+%<latexrelease> \IfFileExists{xparse.ltx}
+%<latexrelease> {\input xparse.ltx }
+%<latexrelease> {\@latex@error{LaTeX requires xparse}\@ehd}%
+%<latexrelease> }
+%<latexrelease> {}
+%<latexrelease>\EndIncludeInRelease
+%<latexrelease>
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\NewDocumentCommand}{Document commands}%
+%<latexrelease>
+%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
+%
+% We need to stop DocStrip treating |@@| in a special way at this point.
+% \begin{macrocode}
+%<@@=>
+% \end{macrocode}
+%
+% \Finale
diff --git a/Master/texmf-dist/source/latex-dev/base/ltcntrl.dtx b/Master/texmf-dist/source/latex-dev/base/ltcntrl.dtx
index a9357a06b87..d65b3aee94f 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltcntrl.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltcntrl.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltcounts.dtx b/Master/texmf-dist/source/latex-dev/base/ltcounts.dtx
index 121979116c9..445cac2f2e4 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltcounts.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltcounts.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltdefns.dtx b/Master/texmf-dist/source/latex-dev/base/ltdefns.dtx
index aff93510f97..ab9d4d0da16 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltdefns.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltdefns.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -32,7 +32,7 @@
%<*driver>
% \fi
\ProvidesFile{ltdefns.dtx}
- [2020/11/25 v1.5o LaTeX Kernel (definition commands)]
+ [2021/01/15 v1.5o LaTeX Kernel (definition commands)]
% \iffalse
\documentclass{ltxdoc}
\GetFileInfo{ltdefns.dtx}
@@ -1471,7 +1471,7 @@
% \ldots
% \end{quote}
% \cs{robust@command@act} will iterate over the \meta{action-list}, evaluating
-% each \meta{if-type-$n$}\meta{robust-cmd}|{|\meta{true}|}{|\meta{false}|}|.
+% each \meta{if-type-$n$} \meta{robust-cmd} |{|\meta{true}|}{|\meta{false}|}|.
% If the \meta{if-type-$n$} conditional returns \meta{true}, then
% \meta{act-type-$n$}\meta{act-arg} is executed, and the loop ends. If the
% conditional returns \meta{false}, then \meta{if-type-$n+1$} is executed in
diff --git a/Master/texmf-dist/source/latex-dev/base/ltdirchk.dtx b/Master/texmf-dist/source/latex-dev/base/ltdirchk.dtx
index 0e85f0a4052..36a1ca616cd 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltdirchk.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltdirchk.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -37,7 +37,7 @@
%<*driver>
% \fi
\ProvidesFile{ltdirchk.dtx}
- [2020/12/05 v1.3a LaTeX Kernel (System Dependent Parts)]
+ [2021/01/15 v1.3a LaTeX Kernel (System Dependent Parts)]
% \iffalse
\documentclass{ltxdoc}
\GetFileInfo{ltdirchk.dtx}
@@ -127,14 +127,16 @@
% |\input@path| should expand to a list of such directories, each in a
% |{}| group.
%
+% \begin{sloppypar}
% \DescribeMacro{\filename@parse}
% After a call of the form: |\filename@parse{|\meta{filename}|}|, the
-% three macros |\filename@area|,|\filename@base|,|\filename@ext| should
+% three macros |\filename@area|, |\filename@base| and |\filename@ext| should
% be defined to be the `area' (or directory), basename and
% extension respectively. If there was no extension specified in
% \meta{filename}, |\filename@ext| should be |\let| to |\relax| (so this
% case may be tested with |\@ifundefined{filename@ext}| and, perhaps a
% default extension substituted).
+% \end{sloppypar}
%
% Normally one would not need to define this macro in |texsys.cfg| as
% the automatic tests can supply parsers that work with UNIX and VMS and
@@ -470,14 +472,16 @@
% |{}| group.
%
%
+% \begin{sloppypar}
% \DescribeMacro{\filename@parse}
% After a call of the form: |\filename@parse{|\meta{filename}|}|, the
-% three macros |\filename@area|,|\filename@base|,|\filename@ext| should
+% three macros |\filename@area|, |\filename@base|, |\filename@ext| should
% be defined to be the `area' (or directory), basename and
% extension respectively. If there was no extension specified in
% \meta{filename}, |\filename@ext| should be |\let| to |\relax| (so this
% case may be tested with |\@ifundefined{filename@ext}| and, perhaps a
% default extension substituted).
+% \end{sloppypar}
%
% Normally one would not need to define this macro in |texsys.cfg| as
% the automatic tests can supply parsers that work with UNIX and VMS
diff --git a/Master/texmf-dist/source/latex-dev/base/lterror.dtx b/Master/texmf-dist/source/latex-dev/base/lterror.dtx
index 91d221bced3..7f480a0171f 100644
--- a/Master/texmf-dist/source/latex-dev/base/lterror.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/lterror.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltexpl.dtx b/Master/texmf-dist/source/latex-dev/base/ltexpl.dtx
index b642fd72a39..a9be1b05211 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltexpl.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltexpl.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 2019-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -33,7 +33,7 @@
%<*driver>
% \fi
\ProvidesFile{ltexpl.dtx}
- [2020/12/18 v1.2h LaTeX Kernel (expl3-dependent code)]
+ [2021/01/24 v1.3a LaTeX Kernel (expl3-dependent code)]
% \iffalse
\documentclass{ltxdoc}
\GetFileInfo{ltexpl.dtx}
@@ -101,14 +101,16 @@
% First define some blank commands, so that in case something goes wrong while
% loading \textsf{expl3}, we won't get strange \texttt{Undefined control
% sequence} errors.
+% \changes{v1.3a}{2021/01/24}{Define \pkg{expl3} hooks conditionally}
% \begin{macrocode}
%<*2ekernel|latexrelease>
%<latexrelease>\IncludeInRelease{2020/10/01}%
%<latexrelease> {\@expl@sys@load@backend@@}{Roll forward support}%
-\def\@expl@sys@load@backend@@{}
-\def\@expl@push@filename@@{}
-\def\@expl@push@filename@aux@@{}
-\def\@expl@pop@filename@@{}
+\def\reserved@a#1{\ifdefined#1\else\def#1{}\fi}
+\reserved@a\@expl@sys@load@backend@@
+\reserved@a\@expl@push@filename@@
+\reserved@a\@expl@push@filename@aux@@
+\reserved@a\@expl@pop@filename@@
%<latexrelease>\EndIncludeInRelease
%</2ekernel|latexrelease>
% \end{macrocode}
@@ -188,7 +190,9 @@
% In \texttt{2ekernel} mode, an error is fatal and building the format
% is aborted. Use \verb=\batchmode \read -1 to \tokenlist=, which errors
% with
-% \verb=! Emergency stop. (cannot \read from terminal in nonstop modes)=
+%\begin{verbatim}
+% ! Emergency stop. (cannot \read from terminal in nonstop modes)
+%\end{verbatim}
% and aborts the \TeX{} run. In \texttt{latexrelease} mode, raise an
% error and do nothing. Both ways, the error message shows the minimum
% \textsf{expl3} engine requirements.
@@ -214,7 +218,7 @@
%</2ekernel>
% \end{macrocode}
% We do not support a roll forward across 2019. You need to start
-% with 2019 if you want to get to 2020 or beyond.
+% with 2019 if you want to get to 2020 or beyond.
% \changes{v1.2g}{2020/11/24}{Support for roll forward (gh/434)}
% \begin{macrocode}
%<*latexrelease>
@@ -225,21 +229,18 @@
--- I'm giving up!\MessageBreak\MessageBreak
Note that manually loading the expl3 package\MessageBreak
from your distribution is not enough}%
- \@@end % die
+ \batchmode \read -1 to \reserved@a
%</latexrelease>
}%
- {%
- \input expl3.ltx
- \ifdefined\NewDocumentCommand
- \else
- \IfFileExists{xparse.ltx}
- {\input xparse.ltx }
- {}%
- \fi
- }%
+ {\input expl3.ltx }%
}
%<latexrelease>\EndIncludeInRelease
%<latexrelease>
+% \end{macrocode}
+% To support roll-forward for the case where \textsf{xparse} is fully
+% integrated into the kernel, we do not need to repeat the complex test
+% above as we can simply look for the marker command.
+% \begin{macrocode}
%<latexrelease>\IncludeInRelease{2020/02/02}%
%<latexrelease> {expl3}{Pre-load expl3}%
%<latexrelease>\IfFileExists{expl3.ltx}
@@ -262,35 +263,8 @@
%<latexrelease>\EndIncludeInRelease
% \end{macrocode}
%
-%
-% Starting with 2020-10 the kernel contains most of the
-% \texttt{xparse} interfaces loaded above. These interfaces are
-% later used to define various user command. However, if somebody
-% with an earlier installation tries to roll forward (using a
-% \texttt{latexrelease} package from a newer release) this will not
-% work as the earlier kernel doesn't contain commands such as
-% \cs{NewDocumentCommand}.
-%
-% We therefore add code into \texttt{latexrelease.sty} to load the
-% \texttt{xparse} package of the current installation instead. this
-% may not work if the installation is really old, but roll forward
-% can't do miracles.
-%
-% If the kernel is 2020-10 or later \cs{NewDocumentCommand} is
-% already known (whether or not you roll forward or back) so
-% nothing happens, but if you start from am earlier kernel the
-% \texttt{xparse} package gets loaded by \texttt{latexrelease}.
-% \changes{v1.2g}{2020/11/24}{Load xparse in latexrelease if needed (gh/434)}
-% \begin{macrocode}
-%<latexrelease>\IncludeInRelease{2020/10/01}%
-%<latexrelease> {\NewDocumentCommand}{Emergency loading xparse}%
-%<latexrelease>
-%<latexrelease>\ifdefined\NewDocumentCommand \else
-%<latexrelease> \RequirePackage{xparse}
-%<latexrelease>\fi
-%<latexrelease>
-%<latexrelease>\EndIncludeInRelease
-% \end{macrocode}
+% \changes{v1.3a}{2021/01/21}
+% {Move \pkg{xparse} rollback code to \texttt{ltcmd.dtx}}
%
% \subsection{Using expl3 code}
%
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfilehook.dtx b/Master/texmf-dist/source/latex-dev/base/ltfilehook.dtx
index b5b5de629a6..85c758ae608 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfilehook.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfilehook.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
-%%
-%% File: ltfilehook.dtx (C) Copyright 2020,2021 Frank Mittelbach,
-%% Phelype Oleinik & LaTeX Team
+%
+% Copyright (C) 2020-2021
+% Frank Mittelbach, Phelype Oleinik & LaTeX Team
%
% This file is part of the LaTeX base system.
% -------------------------------------------
@@ -31,8 +31,8 @@
%%% From File: ltfilehook.dtx
%
% \begin{macrocode}
-\providecommand\ltfilehookversion{v1.0e}
-\providecommand\ltfilehookdate{2021/01/07}
+\providecommand\ltfilehookversion{v1.0g}
+\providecommand\ltfilehookdate{2021/02/08}
% \end{macrocode}
%
%<*driver>
@@ -55,6 +55,10 @@
}
\ExplSyntaxOff
+\providecommand\InternalDetectionOff{}
+\providecommand\InternalDetectionOn{}
+
+
\usepackage{structuredlog} % for demonstration
\EnableCrossrefs
@@ -622,6 +626,7 @@
% When rolling forward the following expl3 functions may not be defined.
% If we roll back the code does nothing.
% \changes{v1.0d}{2020/11/24}{Support for roll forward (gh/434)}
+% \InternalDetectionOff
% \begin{macrocode}
%<latexrelease>\IncludeInRelease{2020/10/01}%
%<latexrelease> {\file_parse_full_name_apply:nN}{Roll forward help}%
@@ -643,7 +648,8 @@
%<latexrelease> {
%<latexrelease> \tl_if_empty:nTF {#3}
%<latexrelease> { \__file_parse_full_name_base:nw { } #2 . \s__file_stop {#1} }
-%<latexrelease> { \__file_parse_full_name_area:nw { #1 / #2 } #3 \s__file_stop }
+%<latexrelease> { \__file_parse_full_name_area:nw { #1 / #2 }
+%<latexrelease> #3 \s__file_stop }
%<latexrelease> }
%<latexrelease>\cs_new:Npn \__file_parse_full_name_base:nw #1 #2 . #3 \s__file_stop
%<latexrelease> {
@@ -657,7 +663,8 @@
%<latexrelease> }
%<latexrelease> { \__file_parse_full_name_tidy:nnnN {#1} { .#2 } }
%<latexrelease> }
-%<latexrelease> { \__file_parse_full_name_base:nw { #1 . #2 } #3 \s__file_stop }
+%<latexrelease> { \__file_parse_full_name_base:nw { #1 . #2 }
+%<latexrelease> #3 \s__file_stop }
%<latexrelease> }
%<latexrelease>\cs_new:Npn \__file_parse_full_name_tidy:nnnN #1 #2 #3 #4
%<latexrelease> {
@@ -675,6 +682,7 @@
%<latexrelease>\EndIncludeInRelease
%<*2ekernel>
% \end{macrocode}
+% \InternalDetectionOn
%
% \begin{macrocode}
%<@@=>
@@ -847,6 +855,17 @@
%<latexrelease>\long\def \InputIfFileExists#1#2{%
%<latexrelease> \IfFileExists{#1}%
%<latexrelease> {#2\@addtofilelist{#1}\@@input \@filef@und}}
+% \end{macrocode}
+%
+% Also undo the internal command as some packages unfortunately test
+% for their existence instead of using \cs{IfFormatAtLeastTF}.
+% \changes{v1.0g}{2021/02/08}{Undo the internal for robust
+% \cs{InputIfFileExists} in rollback (gh/494)}
+% \begin{macrocode}
+%<latexrelease>\expandafter\let\csname InputIfFileExists \endcsname\@undefined
+% \end{macrocode}
+%
+% \begin{macrocode}
%<latexrelease>\let\@input@file@exists@with@hooks\@undefined
%<latexrelease>\let\unqu@tefilef@und\@undefined
%<latexrelease>\EndIncludeInRelease
@@ -897,7 +916,8 @@
@file-subst@
\@@_subst_file_normalize:Nn \use_ii_iii:nnn {#1}
}
- { \@@_subst_file_normalize:Nn \@@_file_name_compose:nnn {#2} }
+ { \@@_subst_file_normalize:Nn \@@_file_name_compose:nnn
+ {#2} }
\group_end:
}
\cs_new_protected:Npn \@@_subst_remove:n #1
@@ -990,6 +1010,7 @@
% \subsection{Selecting a file (\cs{set@curr@file})}
%
% \begin{macro}{\set@curr@file,\@curr@file,\@curr@file@reqd}
+% \changes{v1.0f}{2021/01/31}{set \cs{protect} to \cs{string} gh/481}
% Now we hook into \cs{set@curr@file} to resolve a possible file
% substitution, and add \cs{@expl@@@filehook@set@curr@file@@nNN}
% at the end, after \cs{@curr@file} is set.
@@ -1013,11 +1034,12 @@
% \begin{macrocode}
%</2ekernel>
%<*2ekernel|latexrelease>
-%<latexrelease>\IncludeInRelease{2020/10/01}%
+%<latexrelease>\IncludeInRelease{2021/05/01}%
%<latexrelease> {\set@curr@file}{Setting current file name}%
\def\set@curr@file#1{%
\begingroup
\escapechar\m@ne
+ \let\protect\string
\expandafter\def\csname\expandafter\endcsname
\expandafter{\csname\endcsname}%
% \end{macrocode}
@@ -1055,6 +1077,28 @@
% \end{macrocode}
%
% \begin{macrocode}
+%<latexrelease>\IncludeInRelease{2020/10/01}%
+%<latexrelease>\def\set@curr@file#1{%
+%<latexrelease> \begingroup
+%<latexrelease> \escapechar\m@ne
+%<latexrelease> \expandafter\def\csname\expandafter\endcsname
+%<latexrelease> \expandafter{\csname\endcsname}%
+%<latexrelease> \@expl@@@filehook@if@no@extension@@nTF{#1}%
+%<latexrelease> {\@tempswatrue}{\@tempswafalse}%
+%<latexrelease> \@kernel@make@file@csname\@curr@file
+%<latexrelease> \@expl@@@filehook@resolve@file@subst@@w {#1}%
+%<latexrelease> \@expl@@@filehook@if@file@replaced@@TF
+%<latexrelease> {\@kernel@make@file@csname\@curr@file@reqd
+%<latexrelease> \@expl@@@filehook@normalize@file@name@@w{#1}%
+%<latexrelease> \if@tempswa \@expl@@@filehook@drop@extension@@N\@curr@file@reqd \fi}%
+%<latexrelease> {\if@tempswa \@expl@@@filehook@drop@extension@@N\@curr@file \fi
+%<latexrelease> \global\let\@curr@file@reqd\@curr@file}%
+%<latexrelease> \@expl@@@filehook@clear@replacement@flag@@
+%<latexrelease> \endgroup}
+%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
+%
+% \begin{macrocode}
%<latexrelease>\IncludeInRelease{2019/10/01}%
%<latexrelease> {\set@curr@file}{Setting current file name}%
%<latexrelease>\def\set@curr@file#1{%
@@ -1106,7 +1150,8 @@
\expandafter\ifx\csname\endcsname#1%
.tex\else\string#1\fi}
% \end{macrocode}
-%
+%
+% \begin{sloppypar}
% Then we call \cs{@expl@@@filehook@set@curr@file@@nNN} once for
% \cs{@curr@file} to set \cs[no-index]{CurrentFile(Path)Used} and once for
% \cs{@curr@file@reqd} to set \cs[no-index]{CurrentFile(Path)}.
@@ -1116,6 +1161,7 @@
% \cs{@curr@file} and \cs{@curr@file@reqd} differ. This macro is
% issued separate from \cs{set@curr@file} because it changes
% \cs{CurrentFile}, and side-effects would quickly get out of control.
+% \end{sloppypar}
% \begin{macrocode}
\def\@filehook@set@CurrentFile{%
\@expl@@@filehook@set@curr@file@@nNN{\@curr@file}%
@@ -1185,7 +1231,7 @@
%</2ekernel>
%<*2ekernel|latexrelease>
%<latexrelease>\IncludeInRelease{2020/10/01}%
-%<latexrelease> {\@@_resolve_file_subst:w}{Replace files detect loops}%
+%<latexrelease> {\@@_resolve_file_subst:w}{Replace files detect loops}%
\ExplSyntaxOn
\cs_new:Npn \@@_resolve_file_subst:w #1 \@nil
{ \@@_file_parse_full_name:nN {#1} \@@_file_subst_begin:nnn }
@@ -1284,7 +1330,7 @@
%</2ekernel>
%<*2ekernel|latexrelease>
%<latexrelease>\IncludeInRelease{2020/10/01}%
-%<latexrelease> {\@@_file_subst_tortoise_hare:nn}{Tortoise and Hare}%
+%<latexrelease> {\@@_file_subst_tortoise_hare:nn}{Tortoise and Hare}%
\ExplSyntaxOn
\cs_new:Npn \@@_file_subst_tortoise_hare:nn #1 #2 #3
{
@@ -1437,7 +1483,7 @@
% \begin{macrocode}
%<@@=>
% \end{macrocode}
-%
+% \InternalDetectionOff
% \begin{macrocode}
%</2ekernel>
%<*2ekernel|latexrelease>
@@ -1495,6 +1541,7 @@
\cs_new_eq:NN \@expl@@@filehook@file@pop@assign@@nnnn
\__filehook_file_pop_assign:nnnn
% \end{macrocode}
+% \InternalDetectionOn
%
%
% \begin{macrocode}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfiles.dtx b/Master/texmf-dist/source/latex-dev/base/ltfiles.dtx
index f91dfe32aaf..b27f9105873 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfiles.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfiles.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -32,7 +32,7 @@
%<*driver>
% \fi
\ProvidesFile{ltfiles.dtx}
- [2020/12/04 v1.2j LaTeX Kernel (File Handling)]
+ [2021/01/15 v1.2j LaTeX Kernel (File Handling)]
% \iffalse
\documentclass{ltxdoc}
\GetFileInfo{ltfiles.dtx}
@@ -49,6 +49,9 @@
\providecommand\pkg[1]{\texttt{#1}}
+\providecommand\InternalDetectionOff{}
+\providecommand\InternalDetectionOn{}
+
\begin{document}
\MaintainedByLaTeXTeam{latex}
\maketitle
@@ -458,12 +461,14 @@
% applied several times with harmful effects. We therefore
% explicitly drop it at this point. the coding is somewhat obscure
% due to the name of the macro which requires constructing.
+% \InternalDetectionOff
% \begin{macrocode}
\edef \@kernel@after@begindocument@before {%
\let\expandafter\noexpand\csname
__hook env/document/begin\endcsname
\noexpand\@empty}
% \end{macrocode}
+% \InternalDetectionOn
%
% \begin{macrocode}
\let \@kernel@before@begindocument \@empty
@@ -996,10 +1001,11 @@
% A side effect of the new code is that we will see quotes around
% file name displays where there haven't been any before.
%
-% For compatibility with existing code using |{abc}.tex| or |{one.two}.png|
-% an initial brace group is discarded before expansion and |\string| is applied
-% The content of the brace group is discarded. This means that a leading space
-% will be lost unless protected (by |{ }| or |" "| or |\space|) but filenames
+% For compatibility with existing code using |{abc}.tex| or
+% |{one.two}.png|, an initial brace group is discarded before
+% expansion and |\string| is applied. The content of the brace
+% group is discarded. This means that a leading space will be lost
+% unless protected (by |{ }| or |" "| or |\space|) but filenames
% with a space are hopefully rare.
%
% \changes{v1.2a}{2019/07/01}{Support UTF-8}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfinal.dtx b/Master/texmf-dist/source/latex-dev/base/ltfinal.dtx
index ee45ea5588f..d6fa6e8a7bf 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfinal.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfinal.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -33,7 +33,7 @@
%<*driver>
% \fi
\ProvidesFile{ltfinal.dtx}
- [2021/01/06 v2.2l LaTeX Kernel (Final Settings)]
+ [2021/02/25 v2.2m LaTeX Kernel (Final Settings)]
% \iffalse
\documentclass{ltxdoc}
\GetFileInfo{ltfinal.dtx}
@@ -525,12 +525,13 @@
%</2ekernel>
%<*2ekernel|latexrelease>
%<latexrelease>\IncludeInRelease{2017/04/15}%
-%<latexrelease> {\document@default@language}{Save language for hyphenation}%
+%<latexrelease> {\document@default@language}{Save language for hyphenation}%
\let\document@default@language\m@ne
%</2ekernel|latexrelease>
%<latexrelease>\EndIncludeInRelease
%<latexrelease>\IncludeInRelease{0000/00/00}%
-%<latexrelease> {\document@default@language}{Save language for hyphenation}%
+%<latexrelease> {\document@default@language}{Save language for hyphenation}%
+%
%<latexrelease>\let\document@default@language\@undefined
%<latexrelease>\EndIncludeInRelease
%<*2ekernel>
@@ -565,6 +566,52 @@
\fi
% \end{macrocode}
%
+% For pdf\TeX\ preload and enable automatic glyph to Unicode mapping
+% for more reliable copy and paste support.
+% \changes{v2.2l}{2021/01/21}{Load glyphtounicode.tex for pdf\TeX}
+% \changes{v2.2m}{2021/02/25}{Improve speed of ToUnicode everyjob loading code}
+%
+% \begin{macrocode}
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2021/05/01}%
+%<latexrelease> {\pdfgentounicode}{Preload glyphtounicode}%
+\ifx \pdfgentounicode \@undefined \else
+%<*2ekernel>
+ \ifnum 0=0%
+ \ifdefined\pdftexversion
+% \pdftexversion<140 does not have \pdfgentounicode, so we only check higher values
+ \ifnum \pdftexversion=140 \ifnum\pdftexrevision<22 1\fi\fi
+ \fi
+ \relax
+%</2ekernel>
+ \input glyphtounicode
+%<*2ekernel>
+ \else
+ \begingroup
+ \everyeof{\noexpand}\endlinechar-1
+ \edef\x{\endgroup
+ \everyjob{\the\everyjob\@@input glyphtounicode }%
+ }\x
+ \fi
+%</2ekernel>
+ \pdfgentounicode=1
+\fi
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
+% When rolling back we can't unload the glyphtounicode mappings, but we
+% can reset |\pdfgentounicode| to ensure that they aren't used.
+% \begin{macrocode}
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\pdfgentounicode}{Preload glyphtounicode}%
+%<latexrelease>\ifx \pdfgentounicode \@undefined \else
+%<latexrelease> \pdfgentounicode=0
+%<latexrelease>\fi
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
+% \end{macrocode}
+%
% \subsection{Input encoding}
%
% \changes{v2.1a}{2018/03/25}{default to UTF-8}
@@ -1147,6 +1194,7 @@
% {Load first aid file if existing}
% \begin{macrocode}
\@input{latex2e-first-aid-for-external-files.ltx}
+\@input{ltpara.ltx}
% \end{macrocode}
%
%
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfloat.dtx b/Master/texmf-dist/source/latex-dev/base/ltfloat.dtx
index 1c8f844bc37..f2324118a04 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfloat.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfloat.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -31,7 +31,7 @@
%
%<*driver>
% \fi
-\ProvidesFile{ltfloat.dtx}[2020/12/05 v1.2d LaTeX Kernel (Floats)]
+\ProvidesFile{ltfloat.dtx}[2021/02/10 v1.2f LaTeX Kernel (Floats)]
% \iffalse
\documentclass{ltxdoc}
\GetFileInfo{ltfloat.dtx}
@@ -1004,7 +1004,12 @@
% \changes{v1.1m}{1995/05/25}{(CAR) Resettings moved to hook}
% \changes{v1.1n}{1996/07/26}{remove unnecessary \cs{global} before
% \cs{@minipage...}}
+% \changes{v1.2e}{2021/02/03}{Explicitly end with \cs{par} (gh/489)}
% \begin{macrocode}
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2021/05/01}%
+%<latexrelease> {\@savemarbox}{Explicit par for marginpar}%
\long\def \@savemarbox #1#2{%
\global\setbox #1%
\color@vbox
@@ -1012,12 +1017,35 @@
\hsize\marginparwidth
\@parboxrestore
\@marginparreset
- #2%
+ #2\par
\@minipagefalse
\outer@nobreak
}%
\color@endbox
}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\@savemarbox}{Explicit par for marginpar}%
+%<latexrelease>
+%<latexrelease>\long\def \@savemarbox #1#2{%
+%<latexrelease> \global\setbox #1%
+%<latexrelease> \color@vbox
+%<latexrelease> \vtop{%
+%<latexrelease> \hsize\marginparwidth
+%<latexrelease> \@parboxrestore
+%<latexrelease> \@marginparreset
+%<latexrelease> #2%
+%<latexrelease> \@minipagefalse
+%<latexrelease> \outer@nobreak
+%<latexrelease> }%
+%<latexrelease> \color@endbox
+%<latexrelease>}
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
% \end{macrocode}
% \end{macro}
%
@@ -1480,7 +1508,13 @@
% {Removed \cs{normalcolor} (again)}
% \changes{v1.1t}{1997/11/19}
% {Missing percent, again}
+% \changes{v1.2e}{2021/02/10}{Explicitly run \cs{par} at the end of footnote text
+% in preparation for paragraph hooks}
% \begin{macrocode}
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2021/05/01}%
+%<latexrelease> {\@footnotetext}{footnotetext tagging}%
\long\def\@footnotetext#1{\insert\footins{%
\reset@font\footnotesize
\interlinepenalty\interfootnotelinepenalty
@@ -1493,7 +1527,32 @@
\color@begingroup
\@makefntext{%
\rule\z@\footnotesep\ignorespaces#1\@finalstrut\strutbox}%
+ \par
\color@endgroup}}%
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<latexrelease>\IncludeInRelease{0000/00/00}%
+%<latexrelease> {\@footnotetext}{footnotetext tagging}%
+%<latexrelease>
+%<latexrelease>\long\def\@footnotetext#1{\insert\footins{%
+%<latexrelease> \reset@font\footnotesize
+%<latexrelease> \interlinepenalty\interfootnotelinepenalty
+%<latexrelease> \splittopskip\footnotesep
+%<latexrelease> \splitmaxdepth \dp\strutbox \floatingpenalty \@MM
+%<latexrelease> \hsize\columnwidth \@parboxrestore
+%<latexrelease> \protected@edef\@currentlabel{%
+%<latexrelease> \csname p@footnote\endcsname\@thefnmark
+%<latexrelease> }%
+%<latexrelease> \color@begingroup
+%<latexrelease> \@makefntext{%
+%<latexrelease> \rule\z@\footnotesep\ignorespaces#1\@finalstrut\strutbox}%
+%<latexrelease> \color@endgroup}}%
+%<latexrelease>
+%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
% \end{macrocode}
% \end{macro}
%
@@ -1558,10 +1617,49 @@
% \begin{macrocode}
\def\@mpfn{footnote}
\def\thempfn{\thefootnote}
-%</2ekernel>
% \end{macrocode}
+%
% \end{macro}
% \end{macro}
%
+%
+%
+%
+% \begin{macro}{\footref}
+% This command generates a footnote mark. The value is produced by
+% referencing a \cs{label} placed into a \cs{footnote} elsewhere
+% (can be one in the main galley or in a minipage).
+% \changes{v1.2f}{2021/02/16}{\cs{footref} added}
+% \begin{macrocode}
+%</2ekernel>
+%<*2ekernel|latexrelease>
+%<latexrelease>\IncludeInRelease{2021/05/01}%
+%<latexrelease> {\footref}{Add footref}%
+\def\footref#1{%
+ \begingroup
+ \unrestored@protected@xdef\@thefnmark{\ref{#1}}%
+ \endgroup
+ \@footnotemark
+}
+%</2ekernel|latexrelease>
+%<latexrelease>\EndIncludeInRelease
+% \end{macrocode}
+% We don't remove it when rolling back.
+% \begin{macrocode}
+%%<latexrelease>\IncludeInRelease{0000/00/00}%
+%%<latexrelease> {\footref}{Add footref}%
+%%<latexrelease>
+%%<latexrelease>\let\footref\@undefined
+%%<latexrelease>
+%%<latexrelease>\EndIncludeInRelease
+%<*2ekernel>
+% \end{macrocode}
+% \end{macro}
+%
+%
+% \begin{macrocode}
+%</2ekernel>
+% \end{macrocode}
+%
% \Finale
%
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfntcmd.dtx b/Master/texmf-dist/source/latex-dev/base/ltfntcmd.dtx
index 8d587a848a5..5f70053a688 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfntcmd.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfntcmd.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfssaxes.dtx b/Master/texmf-dist/source/latex-dev/base/ltfssaxes.dtx
index 4e3b4d983cc..e0c07874556 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfssaxes.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfssaxes.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 2019-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -35,7 +35,7 @@
%
%
\ProvidesFile{ltfssaxes.dtx}
- [2020/12/22 v1.0h LaTeX Kernel (NFSS Axes handing)]
+ [2021/01/15 v1.0h LaTeX Kernel (NFSS Axes handing)]
% \iffalse
\documentclass{ltxdoc}
\begin{document}
@@ -764,8 +764,10 @@
%<latexrelease>\IncludeInRelease{2020/02/02}%
%<latexrelease> {\fontseries}{delay fontseries update}%
%<latexrelease>
-%<latexrelease>\DeclareRobustCommand\fontseries[1]{\@forced@seriesfalse\merge@font@series{#1}}
-%<latexrelease>\DeclareRobustCommand\fontseriesforce[1]{\@forced@seriestrue\edef\f@series{#1}}
+%<latexrelease>\DeclareRobustCommand\fontseries[1]{\@forced@seriesfalse
+%<latexrelease> \merge@font@series{#1}}
+%<latexrelease>\DeclareRobustCommand\fontseriesforce[1]{\@forced@seriestrue
+%<latexrelease> \edef\f@series{#1}}
%<latexrelease>\let\delayed@f@adjustment\@undefined
%<latexrelease>
% \end{macrocode}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfssbas.dtx b/Master/texmf-dist/source/latex-dev/base/ltfssbas.dtx
index d2dde745d4c..6d575fc9d0b 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfssbas.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfssbas.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfsscmp.dtx b/Master/texmf-dist/source/latex-dev/base/ltfsscmp.dtx
index 29580b8d5e5..03be855127d 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfsscmp.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfsscmp.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfssdcl.dtx b/Master/texmf-dist/source/latex-dev/base/ltfssdcl.dtx
index 725d0e39fcc..9710d543829 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfssdcl.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfssdcl.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -36,7 +36,7 @@
%
%
\ProvidesFile{ltfssdcl.dtx}
- [2020/12/05 v3.0v LaTeX Kernel (NFSS Declarative Interface)]
+ [2021/02/15 v3.0w LaTeX Kernel (NFSS Declarative Interface)]
% \iffalse
\documentclass{ltxdoc}
\begin{document}
@@ -490,7 +490,11 @@
in version \math@version}%
\@eha
\fi
- \else \expandafter\non@alpherr\fi
+% \end{macrocode}
+% extra \cs{expandafter} to remove the \cs{expandafter} added below
+% \changes{v3.0w}{2021/02/115}{fix for (gh/501)}
+% \begin{macrocode}
+ \else \expandafter\expandafter\expandafter\non@alpherr\fi
% \end{macrocode}
% If the legacy interface is used, e.g., \verb=$\sf -1$= the math
% alphabet \verb=#1= does not take an argument so we better do not
@@ -1526,7 +1530,7 @@
\def\set@mathdelimiter#1#2#3#4#5#6{%
% \end{macrocode}
% We use \cs{protected} not \cs{MakeRobust} so that
-% \verb=\bigl\lfoor= etc.\ works inside \cs{protected@edef}.
+% \verb=\bigl\lfoor= etc.\ works inside the argument of \cs{protected@edef}.
% \changes{v3.0s}{2019/08/27}{Make math delimiters robust}
% \changes{v3.0t}{2020/01/20}{fix for gh/251}
% \begin{macrocode}
@@ -1733,7 +1737,7 @@
\relax
% \end{macrocode}
% If it is undefined, fine otherwise check if it is a math alphabet
-% defined via |\DeclareSymbolFontAlphabet|:
+% defined via \\ |\DeclareSymbolFontAlphabet|:
% \begin{macrocode}
\else
\edef\reserved@a{%
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfssini.dtx b/Master/texmf-dist/source/latex-dev/base/ltfssini.dtx
index a92321bf5d7..361adac9c36 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfssini.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfssini.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -36,7 +36,7 @@
%
%
\ProvidesFile{ltfssini.dtx}
- [2020/12/06 v3.2f LaTeX Kernel (NFSS Initialisation)]
+ [2021/01/15 v3.2f LaTeX Kernel (NFSS Initialisation)]
% \iffalse
\documentclass{ltxdoc}
\begin{document}
@@ -448,7 +448,7 @@
% \item \cs{bfseries} is called for a family using \texttt{bx}
% (e.g., CMR)
% \item Switch to a font family that is none of the meta
-% families, e.g., via \verb=\fontfamily{ptm}\selectfont=
+% families, e.g., via \verb=\fontfamily{ptm}\allowbreak\verb=\selectfont=
% \item Then none of the real meta families, match but the final
% \verb=\@elt{??}= will.
% \item Therefore if the current series is \cs{mddefault} or
@@ -1307,8 +1307,9 @@
}
% \end{macrocode}
% \end{macro}
-
-
+%
+%
+%
% \begin{macro}{\if@font@series@context}
% The boolean to signal if we found the requested font series context.
% \begin{macrocode}
@@ -1334,9 +1335,11 @@
%<latexrelease>\EndIncludeInRelease
%<*2ekernel>
% \end{macrocode}
-
-
-
+%
+%
+%
+%
+%
%
% \section{Supporting nested emphasis}
%
@@ -1401,9 +1404,9 @@
\let\emfontdeclare@clist\@empty
% \end{macrocode}
% \end{macro}
-
-
-
+%
+%
+%
% \begin{macro}{\emrest}
% Reset the font to upright and upper/lower case. With the default rules
% using \cs{shapedefault} does that for us but to be on the safe side we
@@ -1412,12 +1415,13 @@
\DeclareRobustCommand\emreset{\upshape\ulcshape}
% \end{macrocode}
% \end{macro}
-
-
-
+%
+%
+%
% \begin{macro}{\em}
-% The new definition for \cs{em} (and implicitly \cs{emph} is like
-% it was before if \cs{emfontdeclare@clist} is empty.
+%
+% The new definition for \cs{em} (and implicitly \cs{emph}) is the
+% same as before as long as \cs{emfontdeclare@clist} is empty.
% \begin{macrocode}
\DeclareRobustCommand\em{%
\@nomath\em
diff --git a/Master/texmf-dist/source/latex-dev/base/ltfsstrc.dtx b/Master/texmf-dist/source/latex-dev/base/ltfsstrc.dtx
index bd0f6fabd21..961abafc8a3 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltfsstrc.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltfsstrc.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -30,7 +30,7 @@
% \iffalse
%%% From File: ltfsstrc.dtx
%% Copyright (C) 1989-97 by Frank Mittelbach and Rainer Sch\"opf.
-%% Copyright (C) 1994-97 by LaTeX3 project. All rights reserved.
+%% Copyright (C) 1994-97 by LaTeX Project. All rights reserved.
%
%<package>\NeedsTeXFormat{LaTeX2e}[2021/05/01]
%<package>\ProvidesPackage{tracefnt}
diff --git a/Master/texmf-dist/source/latex-dev/base/lthooks.dtx b/Master/texmf-dist/source/latex-dev/base/lthooks.dtx
index 404938d203a..803914b4a74 100644
--- a/Master/texmf-dist/source/latex-dev/base/lthooks.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/lthooks.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
-%%
-%% File: lthooks.dtx (C) Copyright 2020,2021 Frank Mittelbach,
-%% Phelype Oleinik & LaTeX Team
+%
+% Copyright (C) 2020-2021
+% Frank Mittelbach, Phelype Oleinik & LaTeX Team
%
% This file is part of the LaTeX base system.
% -------------------------------------------
@@ -32,7 +32,7 @@
%
% \begin{macrocode}
\def\lthooksversion{v1.0h}
-\def\lthooksdate{2021/01/07}
+\def\lthooksdate{2021/01/15}
% \end{macrocode}
%
%<*driver>
@@ -54,6 +54,9 @@
}
\ExplSyntaxOff
+\providecommand\InternalDetectionOff{}
+\providecommand\InternalDetectionOn{}
+
\EnableCrossrefs
\CodelineIndex
\begin{document}
@@ -1336,14 +1339,8 @@
% Like \cs{AtBeginDocument} but for the \hook{enddocument} hook.
% \end{function}
%
-%
-%
-% \begin{function}{\AtBeginDvi}
-% \begin{syntax}
-% \cs{AtBeginDvi} \oarg{label} \Arg{code}
-% \end{syntax}
-% This hook is discussed in conjunction with the shipout hooks.
-% \end{function}
+% There is also \cs{AtBeginDvi} which is discussed in conjunction
+% with the shipout hooks.
%
% \bigskip
%
@@ -1772,9 +1769,11 @@
%
% \begin{macro}[EXP]{\@@_str_compare:nn}
% Private copy of \cs{__str_if_eq:nn}
+% \InternalDetectionOff
% \begin{macrocode}
\cs_new_eq:NN \@@_str_compare:nn \__str_if_eq:nn
% \end{macrocode}
+% \InternalDetectionOn
% \end{macro}
%
% \subsection{Declarations}
@@ -2898,9 +2897,11 @@
% together in hook |#1|.
% \begin{macrocode}
\cs_new_protected:cpn { @@_rule_incompatible-error_gset:nnn } #1#2#3
- { \@@_tl_gset:cn { g_@@_#1_rule_ \@@_label_pair:nn {#2} {#3} _tl } { xE } }
+ { \@@_tl_gset:cn { g_@@_#1_rule_ \@@_label_pair:nn {#2} {#3} _tl }
+ { xE } }
\cs_new_protected:cpn { @@_rule_incompatible-warning_gset:nnn } #1#2#3
- { \@@_tl_gset:cn { g_@@_#1_rule_ \@@_label_pair:nn {#2} {#3} _tl } { xW } }
+ { \@@_tl_gset:cn { g_@@_#1_rule_ \@@_label_pair:nn {#2} {#3} _tl }
+ { xW } }
% \end{macrocode}
% \end{macro}
%
@@ -4449,6 +4450,7 @@
% \begin{macro}{\@expl@@@initialize@all@@,
% \@expl@@@hook@curr@name@pop@@}
%
+% \InternalDetectionOff
% \begin{macrocode}
\cs_new_eq:NN \@expl@@@initialize@all@@
\__hook_initialize_all:
@@ -4458,6 +4460,7 @@
\cs_new_eq:NN \@expl@@@hook@curr@name@pop@@
\__hook_curr_name_pop:
% \end{macrocode}
+% \InternalDetectionOn
% \end{macro}
%
%
diff --git a/Master/texmf-dist/source/latex-dev/base/lthyphen.dtx b/Master/texmf-dist/source/latex-dev/base/lthyphen.dtx
index f8321719c72..9244db06423 100644
--- a/Master/texmf-dist/source/latex-dev/base/lthyphen.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/lthyphen.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -40,7 +40,7 @@
%\iffalse This is a META comment
%
% File `lthyphen.dtx'.
-% Copyright (C) 1994-94 LaTeX3 project, Frank Mittelbach and
+% Copyright (C) 1994-94 LaTeX Project, Frank Mittelbach and
% Rainer Sch\"opf, all rights reserved.
%
%\fi
diff --git a/Master/texmf-dist/source/latex-dev/base/ltidxglo.dtx b/Master/texmf-dist/source/latex-dev/base/ltidxglo.dtx
index f435fea4d04..75a80cd4390 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltidxglo.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltidxglo.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltlength.dtx b/Master/texmf-dist/source/latex-dev/base/ltlength.dtx
index 388aac78d7e..1be147547ec 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltlength.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltlength.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltlists.dtx b/Master/texmf-dist/source/latex-dev/base/ltlists.dtx
index 087b418847f..fecb3125880 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltlists.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltlists.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltlogos.dtx b/Master/texmf-dist/source/latex-dev/base/ltlogos.dtx
index 6fd7b35c928..132eaf636f7 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltlogos.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltlogos.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltluatex.dtx b/Master/texmf-dist/source/latex-dev/base/ltluatex.dtx
index 957a71d8488..e3fa9f93437 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltluatex.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltluatex.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 2015-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -28,7 +28,7 @@
\ProvidesFile{ltluatex.dtx}
%</driver>
%<*tex>
-[2020/12/06 v1.1s
+[2021/01/15 v1.1s
%</tex>
%<plain> LuaTeX support for plain TeX (core)
%<*tex>
@@ -38,6 +38,10 @@
%</tex>
%<*driver>
\documentclass{ltxdoc}
+
+\providecommand\InternalDetectionOff{}
+\providecommand\InternalDetectionOn{}
+
\GetFileInfo{ltluatex.dtx}
\begin{document}
\title{\filename\\(Lua\TeX{}-specific support)}
@@ -204,6 +208,7 @@
% The number is returned and also \meta{name} argument is added to the
% |lua.name| array at that index.
%
+% \begin{sloppypar}
% \noindent
% \DescribeMacro{new_luafunction}
% |luatexbase.new_luafunction(|\meta{functionname}|)|\\
@@ -211,6 +216,7 @@
% with |\luafunction|, |\lateluafunction|, and |\luadef|,
% indexed from~$1$. The optional \meta{functionname} argument
% is just used for logging.
+% \end{sloppypar}
%
% These functions all require access to a named \TeX{} count register
% to manage their allocations. The standard names are those defined
@@ -1116,6 +1122,7 @@ luatexbase.registernumber = registernumber
% \changes{v1.1c}{2017/02/18}{Parameterize count used in tracking}
% As attributes are used for Lua manipulations its useful to be able
% to assign from this end.
+% \InternalDetectionOff
% \begin{macrocode}
local attributes=setmetatable(
{},
@@ -1143,6 +1150,7 @@ local function new_attribute(name)
end
luatexbase.new_attribute = new_attribute
% \end{macrocode}
+% \InternalDetectionOn
% \end{macro}
%
% \subsection{Custom whatsit allocation}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltmath.dtx b/Master/texmf-dist/source/latex-dev/base/ltmath.dtx
index 58ca26b4a5f..ca90e1980d2 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltmath.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltmath.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltmiscen.dtx b/Master/texmf-dist/source/latex-dev/base/ltmiscen.dtx
index c7254ad3532..939bd51a2da 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltmiscen.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltmiscen.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -32,7 +32,7 @@
%<*driver>
% \fi
\ProvidesFile{ltmiscen.dtx}
- [2020/12/18 v1.1x LaTeX Kernel (Misc. Environments)]
+ [2021/02/08 v1.1y LaTeX Kernel (Misc. Environments)]
% \iffalse
\documentclass{ltxdoc}
\GetFileInfo{ltmiscen.dtx}
@@ -868,6 +868,15 @@
%<latexrelease> \expandafter\endgroup\if@endpe\@doendpe\fi
%<latexrelease> \if@ignore\@ignorefalse\ignorespaces\fi}
%<latexrelease>
+% \end{macrocode}
+% Also undo the internal commands as some packages unfortunately test
+% for their existence instead of using \cs{IfFormatAtLeastTF}.
+% \changes{v1.1y}{2021/02/08}{Undo the internals for robust \cs{begin}
+% and \cs{end} in rollback (gh/494)}
+% \begin{macrocode}
+%<latexrelease>\expandafter\let\csname begin \endcsname\@undefined
+%<latexrelease>\expandafter\let\csname end \endcsname\@undefined
+%<latexrelease>
%<latexrelease>\EndIncludeInRelease
%<*2ekernel>
% \end{macrocode}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltoutenc.dtx b/Master/texmf-dist/source/latex-dev/base/ltoutenc.dtx
index 4eea0ad41ec..73146428c0d 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltoutenc.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltoutenc.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -37,14 +37,14 @@
%<TS1>\ProvidesFile{ts1enc.def}[2001/06/05 v3.0e (jk/car/fm)
%<TU>\ProvidesFile{tuenc.def}
%<package>\ProvidesPackage{fontenc}
-%<OT1|T1|OMS|OML|OT4|TU|package> [2020/08/10 v2.0s
+%<OT1|T1|OMS|OML|OT4|TU|package> [2021/02/19 v2.0u
%<OT1|T1|OMS|OML|OT4|TS1|TU> Standard LaTeX file]
%<package> Standard LaTeX package]
%
%<*driver>
% \fi
\ProvidesFile{ltoutenc.dtx}
- [2020/12/05 v2.0s LaTeX Kernel (font encodings)]
+ [2021/02/19 v2.0u LaTeX Kernel (font encodings)]
% \iffalse
\documentclass{ltxdoc}
\GetFileInfo{ltoutenc.dtx}
@@ -1717,6 +1717,17 @@
\DeclareTextSymbol{\textemdash}{OT1}{124}
\DeclareTextSymbol{\textendash}{OT1}{123}
% \end{macrocode}
+%
+% The \verb=\nobreak\hskip\z@= is there to prevent a break after
+% the hyphen but allow later breaks in the remainder of the word.
+% \changes{v2.0u}{2021/02/19}{Add \cs{textnonbreakinghyphen}, \cs{textfiguredash}
+% and \cs{texthorizontalbar} (gh/404)}
+% \begin{macrocode}
+\DeclareTextCommand{\textnonbreakinghyphen}{OT1}{\mbox{-}\nobreak\hskip\z@}
+\DeclareTextCommand{\textfiguredash} {OT1}{\textendash}
+\DeclareTextCommand{\texthorizontalbar} {OT1}{\textemdash}
+% \end{macrocode}
+%
% Using the ligatures helps with OT1 fonts that have
% |\textexclamdown| and |\textquestiondown| in unusual positions.
% \changes{v1.95}{2002/06/17}{Definition of \cs{textexclamdown} changed (pr/3368)}
@@ -2045,6 +2056,19 @@
\DeclareTextSymbol{\textdollar}{T1}{`\$}
\DeclareTextSymbol{\textemdash}{T1}{22}
\DeclareTextSymbol{\textendash}{T1}{21}
+% \end{macrocode}
+%
+% The \verb=\nobreak\hskip\z@= is there to prevent a break after
+% the hyphen but allow later breaks in the remainder of the word.
+% \changes{v2.0u}{2021/02/19}{Add \cs{textnonbreakinghyphen}, \cs{textfiguredash}
+% and \cs{texthorizontalbar} (gh/404)}
+% \begin{macrocode}
+\DeclareTextCommand{\textnonbreakinghyphen}{T1}{\mbox{-}\nobreak\hskip\z@}
+\DeclareTextCommand{\textfiguredash} {T1}{\textendash}
+\DeclareTextCommand{\texthorizontalbar} {T1}{\textemdash}
+% \end{macrocode}
+%
+% \begin{macrocode}
\DeclareTextSymbol{\textexclamdown}{T1}{189}
\DeclareTextSymbol{\textgreater}{T1}{`\>}
%\DeclareTextSymbol{\texthyphenchar}{T1}{127}
@@ -2583,8 +2607,31 @@
\DeclareTextSymbol{\textquotesingle}{TS1}{39}
% \end{macrocode}
% "28 = 40
-% \begin{macrocode}
-\DeclareTextSymbol{\textasteriskcentered}{TS1}{42}
+%
+% The symbol \cs{textasteriskcentered} ``\textasteriskcentered'' is
+% supposed to be always available in \texttt{TS1} and that is
+% important as it is used in footnote symbols. However, in a few
+% fonts it is missing even though they are otherwise fairly
+% complete. We therefore use a rather elaborate method and check if
+% the slot has a glyph and if not produce a poor man's version by
+% using a normal ``*'' slightly enlarged and somewhat lowered.
+% The main application for this symbol is in footnote symbols and
+% there it should produce a comparable size and show a similar placement.
+% \changes{v2.0t}{2021/02/17}{Special definition for
+% \cs{textasteriskcentered} when missing in TS1 (gh/502)}
+% \begin{macrocode}
+%\DeclareTextSymbol{\textasteriskcentered}{TS1}{42} % that's wanted
+\DeclareTextCommand \textasteriskcentered{TS1}{% % and that's needed
+ \iffontchar\font 42 \char42 \else
+ \begingroup\fontencoding{T1}%
+ \fontsize
+ {\the\dimexpr1.3\dimexpr\f@size pt\relax}%
+ {\f@baselineskip}%
+ \selectfont
+ \raisebox{-0.7ex}[\dimexpr\height-0.7ex][0pt]{*}%
+ \endgroup
+ \fi
+}
% \end{macrocode}
% Note that '054 is a comma and '056 is a full stop: these make
% numbers using oldstyle digits easier to input.
@@ -3106,8 +3153,34 @@
\DeclareTextSymbol{\textbaht} \UnicodeEncodingName{"0E3F}
\DeclareTextSymbol{\SS} \UnicodeEncodingName{"1E9E}
\DeclareTextSymbol{\textcompwordmark} \UnicodeEncodingName{"200C}
+% \end{macrocode}
+%
+% \changes{v2.0u}{2021/02/19}{Add \cs{textnonbreakinghyphen}, \cs{textfiguredash}
+% and \cs{texthorizontalbar} (gh/404)}
+% \begin{macrocode}
+%\DeclareTextSymbol{\textnonbreakinghyphen} \UnicodeEncodingName{"2011}
+%\DeclareTextSymbol{\textfiguredash} \UnicodeEncodingName{"2012}
\DeclareTextSymbol{\textendash} \UnicodeEncodingName{"2013}
\DeclareTextSymbol{\textemdash} \UnicodeEncodingName{"2014}
+%\DeclareTextSymbol{\texthorizontalbar} \UnicodeEncodingName{"2015}
+% \end{macrocode}
+% Unfortunately some fonts do not implement \texttt{"2011}, \texttt{"2012} and/or
+% \texttt{"2015} (including the \LaTeX{} default fonts for Unicode
+% engines) so we provide some approximations if the glyph is
+% missing, like we do for \texttt{OT1} and \texttt{T1}.
+%
+% The \verb=\nobreak\hskip\z@= is there to prevent a break after
+% the hyphen but allow later breaks in the remainder of the word.
+% \begin{macrocode}
+\DeclareTextCommand{\textnonbreakinghyphen} \UnicodeEncodingName
+ {\iffontchar\font "2011 \char "2011 \else \mbox{-}\nobreak\hskip\z@ \fi}
+\DeclareTextCommand{\textfiguredash} \UnicodeEncodingName
+ {\iffontchar\font "2012 \char "2012 \else \char "2013 \fi}
+\DeclareTextCommand{\texthorizontalbar} \UnicodeEncodingName
+ {\iffontchar\font "2015 \char "2015 \else \char "2014 \fi}
+% \end{macrocode}
+%
+% \begin{macrocode}
\DeclareTextSymbol{\textbardbl} \UnicodeEncodingName{"2016}
\DeclareTextSymbol{\textquoteleft} \UnicodeEncodingName{"2018}
\DeclareTextSymbol{\textquoteright} \UnicodeEncodingName{"2019}
@@ -3159,15 +3232,17 @@
% \end{macrocode}
%
% Not all fonts have U+2217 but using U+002A requires some adjustment.
+% \changes{v2.0t}{2021/02/17}{Adjust values for
+% \cs{textasteriskcentered} To match TS1 definition (gh/502)}
% \begin{macrocode}
\DeclareTextCommand{\textasteriskcentered}\UnicodeEncodingName{%
\iffontchar\font"2217 \char"2217 \else
\begingroup
\fontsize
- {\the\dimexpr1.2\dimexpr\f@size pt\relax}%
+ {\the\dimexpr1.3\dimexpr\f@size pt\relax}%
{\f@baselineskip}%
\selectfont
- \raisebox{-0.6ex}[\dimexpr\height-0.6ex][0pt]{*}%
+ \raisebox{-0.7ex}[\dimexpr\height-0.7ex][0pt]{*}%
\endgroup
\fi
}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltoutenc.ins b/Master/texmf-dist/source/latex-dev/base/ltoutenc.ins
index 23c27697f84..1330b5c44eb 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltoutenc.ins
+++ b/Master/texmf-dist/source/latex-dev/base/ltoutenc.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltoutput.dtx b/Master/texmf-dist/source/latex-dev/base/ltoutput.dtx
index f418459f661..69bfa1f036b 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltoutput.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltoutput.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -57,7 +57,7 @@
% \iffalse
% LATEX VERSION 2e
% Copyright (C) 1992 by Leslie Lamport
-% Copyright (C) 1994-2000 by Leslie Lamport, LaTeX3 project
+% Copyright (C) 1994-2000 by Leslie Lamport, LaTeX Project
%
% LaTeX 2e kernel file for the output routine.
%
diff --git a/Master/texmf-dist/source/latex-dev/base/ltpage.dtx b/Master/texmf-dist/source/latex-dev/base/ltpage.dtx
index ce6681e7e08..4504033f542 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltpage.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltpage.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltpageno.dtx b/Master/texmf-dist/source/latex-dev/base/ltpageno.dtx
index 80055c7c5d9..03d36a53d98 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltpageno.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltpageno.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltpar.dtx b/Master/texmf-dist/source/latex-dev/base/ltpar.dtx
index 169954f9ea8..f4f3d5e63fc 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltpar.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltpar.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltpara.dtx b/Master/texmf-dist/source/latex-dev/base/ltpara.dtx
new file mode 100644
index 00000000000..1a3df95a6e2
--- /dev/null
+++ b/Master/texmf-dist/source/latex-dev/base/ltpara.dtx
@@ -0,0 +1,1159 @@
+% \iffalse meta-comment
+%
+%% File: ltpara.dtx (C) Copyright 2020-2021
+% Frank Mittelbach, LaTeX Team
+%
+% 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
+%
+%
+%%% From File: lthooks.dtx
+%
+% \begin{macrocode}
+\def\ltparaversion{v1.0d}
+\def\ltparadate{2021/02/18}
+% \end{macrocode}
+%<*driver>
+\documentclass{l3doc}
+
+%\usepackage{ltpara}
+
+% Fixing footnotes in functions and variables: this should be in l3doc!
+\newcommand\fixfootnote[2]{\footnotemark
+ \AddToHookNext{env/#1/after}{\footnotetext{#2}}}
+\AddToHook{env/function/begin}{\def\footnote{\fixfootnote{function}}}
+\AddToHook{env/variable/begin}{\def\footnote{\fixfootnote{variable}}}
+
+\EnableCrossrefs
+\CodelineIndex
+\begin{document}
+ \DocInput{ltpara.dtx}
+\end{document}
+%</driver>
+%
+% \fi
+%
+% \providecommand\hook[1]{\texttt{#1}}
+% \providecommand\env[1]{\texttt{#1}}
+%
+%
+%
+% \title{The \texttt{ltpara.dtx} code\thanks{This file has version
+% \ltparaversion\ dated \ltparadate, \copyright\ \LaTeX\
+% Project.}}
+% \author{Frank Mittelbach}
+%
+% \maketitle
+%
+%
+% \begin{abstract}
+% This code defines four special kernel hooks to support paragraph
+% tagging as well as four public hooks which can be occasionally
+% useful.
+% \end{abstract}
+%
+% \tableofcontents
+%
+%
+% \section{Introduction}
+%
+%
+% The building of paragraphs in the \TeX{} engine(s) has a number
+% of peculiarities that makes it on one hand fairly flexible but on
+% the other hand somewhat awkward to control or reliably to extend.
+% Thus to better understand the code below we start with a brief introduction
+% of the mechanism; for more details refer to the
+% \TeX{}book~\cite[chap.~14]{texbook} (for the full truth you may
+% even have to study the program code).
+%
+% \subsection{The default processing done by the engine}
+%
+% \TeX{} automatically starts building a paragraph when it is
+% currently in vertical mode and encounters anything that can only
+% live in horizontal mode. Most often this is a character, but
+% there are also many commands that can be used only in horizontal mode.
+% If any of them is encountered, \TeX{} will immediately back up
+% (i.e., the character or command is read later again), adds a
+% \cs{parskip} glue to the current vertical list unless the list is
+% empty, switches to
+% horizontal mode, starts its special \enquote{start of paragraph
+% processing} and only then rereads the character or command that
+% caused the mode change.\footnote{Already not quite true: the
+% command \cs{noindent} starts the paragraph but influences the
+% special processing by suppressing the paragraph indentation box
+% normally inserted by it.}
+%
+% This \enquote{start of paragraph
+% processing} first adds an empty box at the start of the
+% horizontal list of width \cs{parindent} (which represents the
+% paragraph indentation) unless the paragraph was started with
+% \cs{noindent} in which case no such box is
+% added\footnote{That's a bit different from placing a zero-sized
+% box!}. It then reads and processes all tokens stored in the
+% special engine token register \cs{everypar}. After that it reads
+% and processes whatever has caused the paragraph to start.
+%
+% Thus out of the box, \TeX{} offers the possibility to put some
+% special code into \cs{everypar} to gain control at (more or less)
+% the start of the paragraph. For example, in LaTeX{} and a number
+% of packages, special code like the following is sometimes used:
+%\begin{verbatim}
+% \everypar{{\setbox\z@\lastbox}\everypar{} ...}
+%\end{verbatim}
+% This removes the paragraph indentation box again (that was already
+% placed by \TeX), then resets \cs{everypar} so that it doesn't do
+% anything on the next paragraph start and then does whatever it
+% wants to do, e.g., in an \cs{item} of a list it will typeset the label in
+% front of the paragraph text.
+% However, there is only one such \cs{everypar} token register and
+% if different packages and/or the kernel all attempt to add their
+% own code here, coordination is very difficult if not impossible.
+%
+% The process when the paragraph ends has different mechanisms and interfaces.
+% A paragraph ends when the engine primitive \cs{par} is called
+% while \TeX{} is in unrestricted horizontal mode, i.e., is
+% building a paragraph. At other times this primitive does nothing
+% or generates as an error depending on the mode \TeX{} is in,
+% e.g., the \cs{par} in
+% \verb=\hbox{a\par b}= is ignored, but \verb=$a\par b$= would complain.
+%
+% If this primitive ends the paragraph it does some special
+% \enquote{end of horizontal list} processing, then calls \TeX{} paragraph
+% builder that breaks the horizontal list into lines then these
+% lines are added as boxes to the enclosing vertical list and
+% \TeX{} returns to vertical mode.
+%
+% This \cs{par} command can be given explicitly, but there are also
+% situations in which \TeX{} is generating it on the fly. Most
+% often this happens when \TeX\ encounters a blank line which is
+% automatically changed to a \cs{par} command which is then
+% executed. The other possibility is that \TeX{} encounters a
+% command which is incompatible with horizontal processing, e.g.,
+% \cs{vskip} (a request for adding vertical space). In such case it
+% silently backs up, and inserts a \cs{par} in the hope that this
+% gets it out of horizontal mode and makes the offending command
+% acceptable.
+
+% The important point to note here is that \TeX{} really inserts
+% the command \cs{par} which can be redefined. Thus, it may not have
+% its original \enquote{primitive} meaning and therefore may not end the
+% horizontal list and call the paragraph builder. This approach
+% offers some flexibility but also allows you to easily produce a
+% \TeX{} document that loops forever, for example, the simple line
+%\begin{verbatim}
+% A \let\par\relax \vskip
+%\end{verbatim}
+% will start a horizontal list at \texttt{A}, redefines \cs{par},
+% then sees \cs{vskip} and inserts \cs{par} to end the
+% paragraph. But this now only runs \cs{relax} so nothing changes
+% and \cs{vskip} is read again, issues a \cs{par} which \ldots. In
+% short, it takes a plain \TeX{} document with five tokens to run
+% forever (as not even memory is consumed and therefore eventually
+% exhausted).
+%
+% There are no other ways than changing \cs{par} to gain control at
+% the end of a paragraph, i.e., there is no token list like
+% \cs{everypar} that is inserted, i.e., the only way to change the
+% default behavior is to modify the action that \cs{par} executes
+% with similar issues as outlined before: different processes need
+% to ensure that they do not overwrite their modifications or
+% worse, think that the \cs{par} in front of them is the engine
+% primitive while in fact it has already been changed by other
+% code.
+%
+%
+% To make matters slightly worse there are a few places where
+% \TeX{} handles the situation differently (most likely for speed
+% reasons back when computers were much slower). If \TeX{} finds
+% itself in unrestricted horizontal mode at the end of building a
+% vertical box (or an \cs{insert}, \cs{vadjust} or at the end of
+% executing the output routine code), it will finish the horizontal
+% list not by issuing a \cs{par} command (which would be consistent
+% with all other places, but by simply executing the primitive version
+% of \cs{par} regardless of the definition that \cs{par} has at the
+% time.
+%
+% Thus, if you have carefully crafted a redefined \cs{par} to execute
+% some special actions at the end of a paragraph and you write
+% something like
+%\begin{verbatim}
+% \vbox{Some paragraph ... text.}
+%\end{verbatim}
+% you will find that your code has never run for the last paragraph
+% in that box. \LaTeX{} avoids this problem, by making sure that
+% all its boxes (such as \cs{parbox} or the \env{minipage}
+% environment, etc.) all internally add an explicit \cs{par} at the
+% end so that such code is run and \TeX{} finds itself in vertical
+% mode already without the need to start up the paragraph builder
+% internally. But, of course, this only works for boxes under direct
+% control of the \LaTeX{} kernel, if some package uses low-level
+% \cs{vbox}es without adding this precaution the \TeX{}
+% optimization kicks in and no special \cs{par} code is executed.
+%
+% And there is another optimization that is painful: if a paragraph
+% is interrupted by a mathematical display, e.g., \verb=\[...\]= in
+% \LaTeX{} or \verb=$$...$$= in plain \TeX{}, then \TeX{} will
+% resume horizontal mode afterward, i.e., build a new horizontal
+% list (without inserting an indentation box or \cs{everypar} at
+% that point). However, if that list immediately ends with an
+% explicit or implicit \cs{par} then \TeX{} will simply throw away
+% this \enquote{null} paragraph and not do its usual \enquote{end
+% of horizontal list} processing, so this special case need to be
+% accounted for when introducing some extended processing.
+%
+%
+%
+% \section{The new mechanism implemented for \LaTeX{}}
+%
+% To improve the situation (and also to support automatic tagging
+% of PDF documents) we now offer public as well as private hooks at
+% the start and end of the paragraph processing. The public hooks
+% can be used by packages (or by the user in the preamble or
+% within the document) and using the hook mechanisms it is possible
+% to reorder or arrange code from different packages in a way that
+% it can safely coexist.
+%
+% To make that happen we have to make use of the basic
+% functionality that is offered by \TeX{}, e.g., we install
+% special code inside \cs{everypar} to provide hooks at the
+% beginning and we redefine \cs{par} to do some special processing
+% when appropriate to install hooks at the end of the paragraph.
+%
+% In order to make this work, we have to ensure that package use of
+% \cs{everypar} is not overwriting our code. This is done through a
+% trick: we basically hide the real \cs{everypar} from the packages
+% and offer them a new token register (with the same name). So if
+% they install their own code it doesn't overwrite ours. Our code
+% then inserts the new \cs{everypar} at the right place inside the
+% process so that it looks as if it was the primitive
+% \cs{everypar}.\footnote{Ideally, \cs{everypar} wouldn't be used
+% at all by packages and instead they would simply write their code
+% into the hooks now offered by the kernel. However, while this is
+% the longterm goal and clearly an improvement (because then the
+% packages do no longer need to worry about getting their code
+% overwritten or needing to account for already existing code in
+% \cs{everypar}), this will not happen overnight. For that reason
+% support for this legacy method is retained.}
+%
+% At the end of the paragraph it would be great if we could use a
+% similar trick. However, due to the fact that \TeX{} inserts the
+% token \cs{par} (that doesn't have a defined meaning) we can't hide
+% \enquote{the real thing\textsuperscript{TM}} and offer the
+% package an indistinguishable alternate.
+%
+% Fortunately, \LaTeX{} has already redefined \cs{par} for its own
+% purposes. As a result there aren't many packages that attempt to
+% change \cs{par}, because without a lot of extra care that would
+% fail miserably. But bottom line, if you load a package that
+% alters \cs{par} then the end of paragraph hooks are most likely
+% not executing while that redefinition is
+% active.\footnote{Similarly to the \cs{everypar} situation, the
+% remedy is that such packages stop doing this and instead add
+% their alterations into the paragraph hooks now provided.}
+%
+%
+%
+% \subsection{The provided hooks}
+%
+%
+% \begin{variable}{para/before,
+% para/begin,
+% para/end,
+% para/after
+% }
+% The following four public hooks are defined and executed for
+% each paragraph:
+% \begin{description}
+%
+% \item[\hook{para/before}]
+%
+% This hook is executed after the kernel hook
+% \cs{@kernel@before@para@before} (discussed below) in vertical
+% mode immediately after \TeX{} has contributed \cs{parskip} to
+% the vertical list and before the actual paragraph processing in
+% horizontal mode starts.
+%
+% This hook should either not produce any typeset material or add
+% only vertical material. If it starts a paragraph an error is
+% generated. The reason is that we are in the starting process of
+% processing a paragraph and so this would lead to endless
+% recursion.\footnote{One could allow it but only if the newly
+% started paragraph is processed without any hooks. Furthermore
+% correct spacing would be a bit of a nightmare so for now this
+% is forbidden.}
+%
+% \end{description}
+% \end{variable}
+%
+% \vspace{-\bigskipamount}
+%
+% \begin{description}
+%
+% \item[\hook{para/begin}]
+%
+% This hook is executed after the kernel hook
+% \cs{@kernel@before@para@begin} (discussed below) in horizontal
+% mode immediately before the indentation box is placed (if there
+% is any, i.e., if the paragraph hasn't been started with
+% \cs{noindent}).
+%
+% The indentation box to be typeset is available to the hook as
+% \cs{IndentationBox} and its automatic placement (after the hook is
+% executed) can be prevented through \cs{SuppressIndentationBox}.
+%
+% If not suppressed, then the indentation is typeset directly
+% after the hook execution by something equivalent to
+% \cs{box}\cs{IndentationBox} followed by the current content of
+% the token register \cs{everypar} as it is available to the
+% kernel or to packages (that run some legacy code).
+%
+% One has to be careful not to add any code to the hook that
+% starts its own paragraph (e.g., by adding a \cs{parbox} or a
+% \cs{marginpar} inside) because that would call the hook inside
+% again (as a new paragraph is started there) and thus lead to an
+% endless recursion ending only after exhausting the available
+% memory. This can only be done by making sure that is not
+% executed for the inner paragraphs (or at least not recursively
+% forever).
+%
+%
+% \item[\hook{para/end}]
+%
+% This hook is executed at the end of a paragraph when \TeX{} is
+% ready to return to vertical mode and after it has removed the
+% last horizontal glue (but not kern) placed on the horizontal
+% list. The code is still executed in horizontal mode so it is
+% possible to add further horizontal material at this point, but
+% it should not alter the mode (even a temporary exit from
+% horizontal mode would create chaos---any attempt will cause an
+% error message)! After the hook has ended the kernel hook
+% \cs{@kernel@after@para@end} is executed and then \TeX{} returns to
+% vertical mode.
+%
+% The hook is offered as public hook, but because of the
+% requirement to stay within horizontal mode one needs to be
+% careful in what is placed into the hook.\footnote{Maybe we
+% should guard against that, but it would be rather tricky to
+% implement as mode changes can happen across group boundaries so
+% one would need to keep a private stack just for that. Well,
+% something to ponder.}
+%
+% This hook is implemented as a reversed hook.
+%
+% \item[\hook{para/after}]
+%
+% This hook is executed directly after \TeX{} has returned to
+% vertical mode and after any material that migrated out of the
+% horizontal list (e.g., from a \cs{vadjust}) has processed.
+%
+% This hook should either not produce any typeset material or add
+% only vertical material.
+% However, for this hook starting a new paragraph is not a
+% disaster so that it isn't prevented.
+%
+% This hook is implemented as a reversed hook.
+%
+% Once that hook code has been processed the kernel hook
+% \cs{@kernel@after@para@after} is executed as the final action
+% of the paragraph processing.
+%
+% \end{description}
+%
+% \begin{variable}{\@kernel@before@para@before,
+% \@kernel@after@para@after,
+% \@kernel@before@para@begin,
+% \@kernel@after@para@end,
+% }
+% As already mentioned above there are also four kernel hooks that
+% are executed at the start and end of the processing.
+% \begin{description}
+%
+% \item[\cs{@kernel@before@para@before}]
+% For future extensions, not currently used by the kernel.
+%
+
+% \item[\cs{@kernel@after@para@after}]
+% For future extensions, not currently used by the kernel.
+%
+%
+% \item[\cs{@kernel@before@para@begin}]
+%
+% Used by the kernel to implement tagging. This hook is executed
+% at the very beginning of a paragraph after \TeX{} has switched to
+% horizontal mode but before any indentation box got added or any
+% \cs{everypar} was run.
+%
+% It should not generate typeset material that could alter the
+% position. Note that it should never leave hmode, otherwise you
+% will end with a loop! We could guard against this, but since it
+% is an internal kernel hook that shouldn't be touched this isn't
+% checked.
+% \end{description}
+% \end{variable}
+%
+% \vspace{-\bigskipamount}
+%
+% \begin{description}
+%
+% \item[\cs{@kernel@after@para@end}]
+%
+% Used by the kernel to implement tagging. It is executed
+% directly after the public \hook{para/end} hook. After it there
+% is a quick check that we are still in horizontal mode, i.e.,
+% that the public hook has not mistakenly ended horizontal mode
+% prematurely (this is an incomplete check just testing the mode
+% and could perhaps be improved (at the cost of speed)).
+%
+% \end{description}
+%
+%
+% \subsection{Altered and newly provided commands}
+%
+% \begin{function}{\par,\endgraf,\para_end:}
+% An explicit request for ending a paragraph is known in plain
+% \TeX{} under the name \cs{endgraf} where it simply calls the
+% paragraph primitive (regardless of what \cs{par} may have as its
+% current definition). In \LaTeX{} \cs{endgraf} with that behavior
+% was also made available.
+%
+% With the new paragraph handling in \LaTeX{}, ending a paragraph
+% means a bit more than just calling the engine's paragraph
+% builder: the process also has to add any hook code for the end of
+% a paragraph. Thus
+% \cs{endgraf} was changed to provide this additional functionality
+% (and so by extension \cs{par} subject to its current meaning).
+%
+% The \pkg{expl3} name for the functionality is \cs{para_end:}.
+% \end{function}
+%
+% \begin{quote}
+% \textbf{Note:} \em The next two commands are still under
+% discussion and may slightly change their semantics (as described
+% in the document) and/or their names between now and the 2021
+% Spring release!
+% \end{quote}
+%
+% \begin{function}{\SuppressIndentationBox,\para_suppress_indentation:}
+% Inside the \hook{para/begin} hook one can use this command to
+% suppress the indentation box at the start of the
+% paragraph. (Technically it is possible to use this command
+% outside the hook as well, but this should not be relied upon.)
+% The box itself remains available for use.
+%
+% The \pkg{expl3} name for the function is \cs{para_suppress_indentation:}.
+% \end{function}
+%
+% \begin{variable}{\IndentationBox,\g_para_indentation_box}
+% The box register holding the indentation box for the paragraph is
+% available for inspection (or changes) inside hooks. It remains
+% available even if the \cs{SuppressIndentationBox} command was
+% used; in that case it will just not be automatically placed.
+%
+% The \pkg{expl3} name for the box register is \cs{g_para_indentation_box}.
+% \end{variable}
+%
+%
+%
+%
+% \subsection{Examples}
+%
+% None of the examples in this section are meant for real use as
+% they are far too simpleminded but they should give some ideas of
+% what could be possible if a bit more care is applied.
+%
+% \subsubsection{Testing the mechanism}
+%
+% The idea is to output for each paragraph encountered some
+% information: a paragraph sequence number, a level number in roman
+% numerals, the environment in which this paragraph appears, and
+% the line number where the start or end of the paragraph is, e.g.,
+% something like
+%\begin{verbatim}
+% PARA: 1-i start (document env. on input line 38)
+% PARA: 1-i end (document env. on input line 38)
+% PARA: 2-i start (document env. on input line 40)
+% PARA: 3-ii start (minipage env. on input line 40)
+% PARA: 3-ii end (minipage env. on input line 40)
+% PARA: 2-i end (document env. on input line 41)
+%\end{verbatim}
+% As you can see paragraph 2 starts on line 40 and ends on 41 and
+% inside a minipage started paragraph 3 (start and end on line 40).
+% If you run this on some document you will find that \LaTeX{}
+% considers more things \enquote{a paragraph} than you have
+% probably thought.
+%
+% This was generated by the following hook code:
+%\begin{verbatim}
+% \newcounter{paracnt} % sequence counter
+% \newcounter{paralevel} % level counter
+%\end{verbatim}
+%
+% To support paragraph nesting we need to maintain a stack of the
+% sequence numbers. This is most easily done using \pkg{expl3}
+% functions, so we switch over. This is not a very general
+% implementation, just enough for what we need and a bit of
+% \LaTeXe{} thrown in as well. When popping the result gets stored
+% in \cs{paracntvalue} and the \cs{ERROR} should never happen
+% because it means we have tried to pop from an empty stack.
+%\begin{verbatim}
+% \ExplSyntaxOn
+% \seq_new:N \g_para_seq
+% \cs_new:Npn \ParaPush
+% {\seq_gpush:No \g_para_seq {\the\value{paracnt}}}
+% \cs_new:Npn \ParaPop {\seq_gpop:NNF \g_para_seq \paracntvalue \ERROR }
+% \ExplSyntaxOff
+%\end{verbatim}
+% At the start of the paragraph increment both sequence counter and
+% level and also save the then current sequence number on our stack.
+%\begin{verbatim}
+% \AddToHook{para/begin}{%
+% \stepcounter{paracnt}\stepcounter{paralevel}%
+% \ParaPush
+%\end{verbatim}
+% To display the sequence number we \cs{typeout} the current
+% sequence and level number. The command \cs{@currenvir} gives us
+% the current environment and \cs{on@line} produces a space and
+% the current input line number.
+%\begin{verbatim}
+% \typeout{PARA: \arabic{paracnt}-\roman{paralevel} start
+% (\@currenvir\space env.\on@line)}%
+%\end{verbatim}
+% We also typeset the sequence number as a tiny red number in a box
+% that takes up no horizontal space. This helps us seeing where
+% \LaTeX{} sees the start and end of the paragraphs in the
+% document.
+%\begin{verbatim}
+% \llap{\color{red}\tiny\arabic{paracnt}\ }%
+% }
+%\end{verbatim}
+%
+% At the end of the paragraph we display sequence number and
+% level again. The level counter has the correct value but we need
+% to retrieve the right sequence value by popping it off the stack
+% after which it is available in \cs{paracntvalue} the way we have
+% set this up above.
+%\begin{verbatim}
+% \AddToHook{para/end}{%
+% \ParaPop
+% \typeout{PARA: \paracntvalue-\roman{paralevel} end \space\space
+% (\@currenvir\space env.\on@line)}%
+%\end{verbatim}
+% We also typeset again a tiny red number with that value, this
+% time sticking out to the right.\footnote{Note that this can alter
+% the document pagination, because a paragraph ending in a display
+% (e.g., an equation) will get an extra line---in that case our tiny number
+% has an effect even though it doesn't take up any space, because
+% it paragraph is no longer empty and thus isn't dropped!}
+% We also decrement the level counter since our level has finished.
+%\begin{verbatim}
+% \rlap{\color{red}\tiny\ \paracntvalue}%
+% \addtocounter{paralevel}{-1}%
+% }
+% \makeatother
+%\end{verbatim}
+%
+%
+%
+% \subsubsection{Mark the first paragraph of each \env{itemize}}
+%
+% The code for this is rather simple. We apply hook code that is
+% executed only once inside a hook that is executed at the begin of
+% each \env{itemize}. We explicitly change the color back and
+% forth so that we don't introduce grouping around the paragraph.
+%\begin{verbatim}
+% \AddToHook{env/itemize/begin}{%
+% \AddToHookNext{para/begin}{\color{blue}}%
+% \AddToHookNext{para/end}{\color{black}}%
+% }
+%\end{verbatim}
+% As a result the first paragraph of each \env{itemize} will appear
+% in blue.
+%
+%
+% \StopEventually{\setlength\IndexMin{200pt} \PrintIndex }
+%
+%
+% \section{The Implementation}
+%
+% \begin{macrocode}
+%<*2ekernel>
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<@@=para>
+\ExplSyntaxOn
+% \end{macrocode}
+
+
+%
+%
+% \subsection{Providing hooks for paragraphs}
+%
+%
+% \begin{macro}{para/before,para/after,para/begin,para/end}
+% The public hooks. They are implemented as a paired set of hooks.
+% \begin{macrocode}
+\hook_new_pair:nn{para/before}{para/after}
+\hook_new_pair:nn{para/begin}{para/end}
+% \end{macrocode}
+% \end{macro}
+%
+%
+%
+% \begin{macro}{\@kernel@before@para@before,
+% \@kernel@after@para@after,
+% \@kernel@before@para@begin,
+% \@kernel@after@para@end}
+% The corresponding kernel hooks (for tagging and future extensions).
+% \begin{macrocode}
+\let \@kernel@before@para@before \@empty
+\let \@kernel@before@para@begin \@empty
+\let \@kernel@after@para@end \@empty
+\let \@kernel@after@para@after \@empty
+% \end{macrocode}
+% \end{macro}
+%
+%
+%
+%
+%
+% \begin{macro}{\g_@@_standard_everypar_tl}
+% Whenever \TeX{} starts a paragraph it inserts first an
+% indentation box and then executes the tokens stored in
+% \cs{tex_everypar:D} (known to \LaTeX{} as \cs{everypar}). We
+% alter this behavior slightly here, so that hooks are added
+% into the right place. Otherwise the process change remains
+% transparent to any legacy code for this space.
+%
+% We keep the standard code to be used by \cs{tex_everypar:D} in a
+% separate token list because we have to switch back and forth
+% for error recovery and so altering \cs{tex_everypar:D} all the
+% time should be a tiny bit faster.
+% \begin{macrocode}
+\tl_new:N \g_@@_standard_everypar_tl
+% \end{macrocode}
+% Here is now its definition:
+% \begin{macrocode}
+\tl_gset:Nn \g_@@_standard_everypar_tl {
+% \end{macrocode}
+% First we remove the indentation box and store it in
+% \cs{g_para_indentation_box}. If there was none because the paragraph
+% was started by \cs{noindent} the box register will be void.
+% \begin{macrocode}
+ \box_gset_to_last:N \g_para_indentation_box
+% \end{macrocode}
+%
+% This will make the newly started horizontal list empty, so if we
+% stop it now and return to vertical mode it will be dropped by
+% \TeX{}. We do that but inside a group so that any \cs{parshape}
+% settings will not get lost as we need them for later.
+% \begin{macrocode}
+ \group_begin:
+ \tex_par:D
+ \group_end:
+% \end{macrocode}
+% We then change \cs{tex_everypar:D} to generate an error so that
+% we can detect and report if the \hook{para/before} hook illegally
+% changed out of vmode.
+% \begin{macrocode}
+ \tex_everypar:D { \__kernel_msg_error:nnnn {para}{mode}{before}{vertical} }
+ \@kernel@before@para@before
+ \hook_use:n {para/before}
+% \end{macrocode}
+% Assuming the hooks have been well behaved it is time to return to
+% horizontal mode and start the paragraph in earnest. We already
+% have the indentation box saved away so we now have to restart the
+% paragraph with an empty \cs{tex_everypar:D} and with
+% \cs{tex_noindent:D}. And we need to make sure not to get another
+% \cs{parskip} or rather (since we can't prevent that) that it is
+% of zero size.
+% \begin{macrocode}
+ \group_begin:
+ \tex_everypar:D {}
+ \skip_zero:N \tex_parskip:D
+ \tex_noindent:D
+ \group_end:
+% \end{macrocode}
+% That brings us back to the start of the horizontal list but we
+% need to change \cs{tex_everypar:D} back to its normal content in
+% case there are nested paragraphs coming up.
+% \begin{macrocode}
+ \tex_everypar:D{\g_@@_standard_everypar_tl}
+% \showthe\tex_everypar:D
+% \end{macrocode}
+% Then we set up \cs{@@_handle_indent:} to reinsert the indentation
+% box later. This can be undone via \cs{SuppressIndentationBox}
+% inside the hook(s).
+% \begin{macrocode}
+ \cs_set_eq:NN \@@_handle_indent: \@@_add_indentation_box:
+% \end{macrocode}
+%
+% This is followed by executing the kernel and the public hook. The
+% kernel hook is there to enable tagging.
+% \begin{macrocode}
+ \@kernel@before@para@begin
+ \hook_use:n {para/begin}
+% \end{macrocode}
+% If we aren't in horizontal mode any longer the hooks above misbehaved.
+% \begin{macrocode}
+ \if_mode_horizontal: \else:
+ \__kernel_msg_error:nnnn {para}{mode}{begin}{vertical} \fi:
+% \end{macrocode}
+% Finally we reinsert the indentation box (unless suppressed) and
+% then call \cs{everypar} the way legacy \LaTeX\ code expects it.
+%
+% However, adding the public \cs{everypar} is a bit tricky (see below) so
+% we add that later, and indirectly.
+% \begin{macrocode}
+ \@@_handle_indent:
+% \the \everypar % <--- done differently
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\tex_everypar:D}
+% \cs{tex_everypar:D} then only has to execute
+% \cs{g_@@_standard_everypar_tl} by default.
+% \begin{macrocode}
+\tex_everypar:D{\g_@@_standard_everypar_tl}
+% \end{macrocode}
+% \end{macro}
+%
+%
+%
+% \begin{macro}[int]{\everypar}
+%
+% Tokens inserted at the beginning of the paragraph are placed into
+% \cs{everypar} inside legacy \LaTeX{} code, e.g., by the list
+% environments or by headings to handle \cs{clubpenalty}, etc. Now
+% this isn't any longer the primitive but simply a toks register
+% used in the code above but to legacy \LaTeX{} code that is
+% transparent.
+%
+% There is, however, a problem: a handful packages use exactly the
+% same trick and replace the primitive with a token register and
+% call the token register inside the renamed primitive. That is
+% they assume that \cs{everypar} is the primitive and that it will
+% still be called at the start of the paragraph even if renamed.
+%
+% But if we have already replaced it by a token register then all
+% they do is to give that token register a new name. Thus our code
+% in \cs{tex_everypar:D} would call \cs{everypar} (which is their
+% now token register) and the code that they added ends up in our
+% token register which is then never used at all. A bit mind
+% boggling I guess.
+%
+% So what we have to do is not to call the token register
+% \cs{everypar} by its name inside \cs{tex_everypar:D} but by using
+% its actual register number.
+% \begin{macrocode}
+\newtoks \everypar
+% \end{macrocode}
+%
+% After we have allocated a new toks register with the name
+% \cs{everypar} the actual register number is available (briefly)
+% inside \cs{allocationnumber}. So instead of \cs{the}\cs{everypar}
+% we have to put \cs{the}\cs{toks}\meta{allocated number} at the end of
+% \cs{tex_everypar:D}.
+%
+% So what remains doing is to append a few tokens to the token list
+% \cs{g_@@_standard_everypar_tl} which we do now. We use \texttt{x}
+% expansion here to get the value of \cs{allocationnumber} in, all
+% the other tokens should not be expanded at this point.
+
+% One important point here is to terminate the register allocation
+% number with a real space. This space will get swallowed up when
+% the number is read. Anything else, such as \cs{scan_stop:} would
+% remain in the input and that would mean that it would interfere
+% with \cs{everypar} code that attempts to scan ahead to see how
+% the paragraph text starts.
+% \begin{macrocode}
+\tl_gput_right:Nx \g_@@_standard_everypar_tl {
+ \exp_not:N \the
+ \exp_not:N \toks
+ \the \allocationnumber
+ \c_space_tl
+}
+% \end{macrocode}
+% \end{macro}
+%
+%
+% \begin{macro}{\g_para_indentation_box}
+% For managing the indentation we need to provide a public
+% accessible box register
+% \begin{macrocode}
+\box_new:N \g_para_indentation_box
+% \end{macrocode}
+% \end{macro}
+
+% \begin{macro}{\@@_handle_indent:,\@@_add_indentation_box:}
+% Adding (typesetting) the indent box is straight forward, the
+% default action for is \cs{@@_handle_indent:} is
+% \cs{@@_add_indentation_box:}.
+% \begin{macrocode}
+\cs_new:Npn \@@_add_indentation_box: {
+ \box_use_drop:N \g_para_indentation_box
+}
+\cs_new_eq:NN \@@_handle_indent: \@@_add_indentation_box:
+% \end{macrocode}
+% The declaration \cs{para_suppress_indentation:} (or
+% \cs{SuppressIndentationBox}) changes that to do nothing.
+% \begin{macrocode}
+\cs_new:Npn \para_suppress_indentation: {
+ \cs_set_eq:NN \@@_handle_indent: \prg_do_nothing:
+}
+% \end{macrocode}
+% \end{macro}
+%
+%
+% \begin{macro}{\IndentationBox,\SuppressIndentationBox}
+% The \LaTeXe{} names for the indentation box and for suppressing it
+% for use in the \hook{para/begin} hook.
+% \begin{macrocode}
+\cs_set_eq:NN \IndentationBox \g_para_indentation_box
+\cs_set_eq:NN \SuppressIndentationBox \para_suppress_indentation:
+% \end{macrocode}
+% \end{macro}
+%
+%
+%
+%
+%
+%
+% \begin{macro}{\para_end:}
+% Adding hooks to the end of a paragraph is similar but here we
+% need to alter the command that is used by \TeX{} to end horizontal
+% mode and return to vertical mode, i.e., \cs{par}.
+%
+% This is a bit more complicated as this command can appear anywhere
+% either explicitly or implicitly added by \TeX{} in certain
+% situations:
+% \begin{itemize}
+% \item
+% when using \cs{par} in the code or the document
+% \item
+% when using a blank line (which is converted to \cs{par})
+% \item
+% when \TeX{} finds any commands incompatible with horizontal
+% mode it issues a \cs{par} and then rereads the command.
+% \end{itemize}
+%
+% Unfortunately, \TeX{} has some (these days) unnecessary
+% optimization: if a \cs{vbox} ends and \TeX{} is still in
+% horizontal mode it simply exercises the paragraph builder instead
+% of issuing a \cs{par}. It is therefore necessary for \LaTeX{} to
+% ensure that this case doesn't happen and all boxes internally
+% have a \cs{par} command at their end.
+%
+% This \cs{par} may or may not run the ``par primitive'' (which is
+% always available as \cs{tex_par:D} in \pkg{expl3}); it is
+% permissible to have a changed meaning and it is in fact changed
+% by \LaTeX{} in various ways at various points inside
+% \texttt{latex.ltx}. For this \LaTeXe{} code has the following
+% conventions: \cs{@@@@par} and \cs{endgraf} both refer to the
+% default meaning (in the past this was the initex primitive) while
+% \cs{par} is the current meaning which may does something else.
+%
+%
+% We are now going to change this default meaning to run
+% \cs{para_end:} instead, which ultimately executes the initex
+% primitive but additionally adds our hooks when appropriate.
+% This way the change is again transparent to the legacy \LaTeXe{}
+% code.
+%
+% In most cases \cs{para_end:} should behave exactly like the
+% primitive and we achieve this by simply expanding it to the
+% primitive which is available to us as \cs{tex_par:D}. This way we
+% don't have to care about whether \TeX{} just does nothing (e.g.,
+% if in vertical mode already) or generate an error, etc.
+% \begin{macrocode}
+\cs_new_protected:Npn \para_end: {
+% \end{macrocode}
+%
+% The only case we care about is when we are in horizontal mode
+% (i.e., doing typesetting) and not also in inner mode (i.e.,
+% making paragraphs and not building an \cs{hbox}.
+% \begin{macrocode}
+% \bool_lazy_and:nnT
+% { \mode_if_horizontal_p: }
+% { \bool_not_p:n { \mode_if_inner_p: } }
+% { ...
+% \end{macrocode}
+% Since this is executed for each and every paragraph in a document
+% we try to stay a fast as possible, So we are aren't using the
+% above construct but two conditionals instead. Using low-level
+% \cs{if_mode...} conditions would be even faster but has the
+% danger to conflict with conditionals in the user hooks.
+% \begin{macrocode}
+ \mode_if_horizontal:TF {
+ \mode_if_inner:F {
+% \end{macrocode}
+% In that case the action of the primitive would be to remove the
+% last glue (not kern) from the horizontal list constructed to form
+% a paragraph then append the a penalty of 10000 and the
+% \cs{parfillskip} at the end and pass the whole list to the
+% paragraph builder which breaks it into lines and \TeX{} then
+% returns to vertical mode.
+%
+% What we want to do instead is to add our hook code at the end of
+% the horizontal list before that happens and the code is passed to
+% the paragraph builder. If there was a glue item at the end then
+% it should get removed before the hook code gets added so we have
+% to arrange for its removal ourselves.
+%
+% There is not much point in checking if there was really a glue
+% item at the end of the horizontal list, instead we simply try to
+% remove one using \cs{tex_unskip:D}, if there wasn't one this will
+% do nothing.
+% \begin{macrocode}
+ \tex_unskip:D
+% \end{macrocode}
+% The we execute the public hook (which may add final typesetting
+% material) followed by the kernel hook we need for adding tagging
+% support. None of this is supposed to change the mode---at the
+% moment we make only a very simple test for this, more devious
+% changes go unnoticed, but too bad, that will then probably
+% badly backfire.
+% \begin{macrocode}
+ \hook_use:n{para/end}
+ \@kernel@after@para@end
+ \mode_if_horizontal:TF {
+% \end{macrocode}
+% The final action (before getting to the point where
+% \cs{tex_par:D} is called) is to add a kern item so that the
+% primitive is prevented from removing glue (if there was some). If
+% we don't do this and the
+% horizontal list ended in several glue items we would end up with
+% removing two instead of just the last one, which would be wrong.
+% We use a kern as that is minimally faster.
+%
+% There is however one other \TeX{} optimization that hurts: in a
+% sequence like this \verb=$$ ... $$ \par= \TeX{} will be in
+% horizontal mode after the display, ready to receive further
+% paragraph text, but since the \cs{par} follows immediately there
+% is a ``null'' paragraph at the end and \TeX{} simply throws that
+% away. The space between \verb=$$= and \cs{par} got already
+% dropped during the display processing so the \cs{par} is not
+% removing any space and appending \cs{parfillskip}, instead it
+% simply goes silently to vmode. Now if we would had added something (to
+% prevent glue removal) that would look to \TeX{} like material
+% after the display and so we would end up with an empty paragraph
+% just containing \cs{parfillskip}.
+%
+% We therefore check if the current hlist is empty
+% (\cs{tex_lastnodetype:D} has the value \texttt{-1} and
+% only if not we add our kern.
+% \begin{macrocode}
+ \if_int_compare:w 0 < \tex_lastnodetype:D
+ \tex_kern:D \c_zero_dim
+ \fi:
+% \end{macrocode}
+% To run the \hook{para/after} hook we first end the
+% paragraph. This means that the \cs{tex_par:D} at the very end is
+% unnecessary but executing it there unnecessarily is better than
+% having code that test for all the different mode possibilities.
+% \begin{macrocode}
+ \tex_par:D
+ \hook_use:n{para/after}
+ \@kernel@after@para@after
+ }
+% \end{macrocode}
+% If we haven't been in horizontal mode then the earlier hook
+% \hook{para/end} is at fault and we report that.
+% \begin{macrocode}
+ { \__kernel_msg_error:nnnn {para}{mode}{end}{horizontal} }
+% \end{macrocode}
+% Finally close out the nested conditionals.
+% \begin{macrocode}
+ }
+ }
+% \end{macrocode}
+%
+% \begin{macrocode}
+ \tex_par:D
+}
+% \end{macrocode}
+% \end{macro}
+%
+% This ends the \texttt{para} module code.
+% \begin{macrocode}
+%<@@=>
+% \end{macrocode}
+%
+% \begin{macro}{\par,\endgraf}
+% \begin{macro}[int]{\@@par}
+%
+% Having the new default definition for \cs{par} we also have to
+% set it up so that it gets used. This is needed in three places
+% \cs{par}, \cs{@@par} (to which \LaTeX{} resets \cs{par}
+% occasionally) and \cs{endgraf} which is another name for the
+% ``default'' action of \cs{par}.
+% \begin{macrocode}
+\cs_set_eq:NN \par \para_end:
+\cs_set_eq:NN \@@par \para_end:
+\cs_set_eq:NN \endgraf \para_end:
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% While this is not integrated properly into the format we have to
+% redo the \cs{everypar} setting from the kernel, otherwise that
+% gets lost (as it happens before that file is loaded).
+% \begin{macrocode}
+\everypar{\@nodocument} %% To get an error if text appears before the
+% \end{macrocode}
+%
+%
+% \subsection{The error messages}
+%
+% Well, one really, first argument is the hook name second the mode
+% it should have stayed in but didn't.
+% \begin{macrocode}
+\__kernel_msg_new:nnnn {para} {mode}
+ {
+ Illegal~mode~ change~ in~ hook~ 'para/#1'.\\
+ Hook~ code~ did~ not~ remain~ in~ #2~ mode.
+ }
+ {
+ Paragraph~ hooks~ cannot~ change~ the~ TeX~ mode~ without~ causing~
+ endless~ recursion.~ The~ hook~ code~ in~ 'para/#1'~ needs~ to~ stay~
+ in~ #2~ mode,~ but~ it~ didn't.~ Examine~ the~ hook~
+ code~ with~ \ShowHook~ to~ find~ the~ issue.
+ }
+% \end{macrocode}
+%
+% \begin{macrocode}
+\ExplSyntaxOff
+% \end{macrocode}
+%
+% \subsection{Kernel corrections}
+%
+% These corrections/changes are already part of the 2021/05
+% release, i.e., but for testing with older releases they have been
+% included here for now. So this section will vanish soon.
+%
+%
+% Marginpar boxes are missing a final internal \cs{par}.
+% \begin{macrocode}
+\IfFormatAtLeastTF{2021/05/01}{}
+{
+\long\def \@savemarbox #1#2{%
+ \global\setbox #1%
+ \color@vbox
+ \vtop{%
+ \hsize\marginparwidth
+ \@parboxrestore
+ \@marginparreset
+ #2\par % <-- needed
+ \@minipagefalse
+ \outer@nobreak
+ }%
+ \color@endbox
+}
+% \end{macrocode}
+%
+% Two sample definitions for the kernel hooks to help a bit with
+% tracing.
+% \begin{macrocode}
+\newcounter{paracnt}
+\def\@kernel@before@para@begin{%
+ \stepcounter{paracnt}%
+ \typeout{PARA: \arabic{paracnt} start
+ (\@currenvir\space level\on@line)}%
+}
+\def\@kernel@after@para@end {%
+ \typeout{PARA: \arabic{paracnt} end \space\space
+ (\@currenvir\space level\on@line)}%
+ \addtocounter{paracnt}{-1}%
+}
+% \end{macrocode}
+%
+%
+% The next lines belong in the kernel and just make sure that we
+% avoid the these days unnecessary optimization that \TeX{} doesn't
+% call on \cs{par} if a vertical box ends in hmode. Instead \TeX{}
+% directly calls the par builder in that case :-(.
+% \begin{macrocode}
+\let\color@begingroup\begingroup
+\def\color@endgroup{\endgraf\endgroup}
+\def\color@setgroup{\color@begingroup} % \def\color@setgroup{\color@begingroup\set@color}
+\def\color@hbox{\hbox\bgroup\color@begingroup}
+\def\color@vbox{\vbox\bgroup\color@begingroup}
+\def\color@endbox{\color@endgroup\egroup}
+}
+% \end{macrocode}
+%
+%
+%
+% \begin{macrocode}
+%<*2ekernel>
+% \end{macrocode}
+%
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\endinput
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+
+%%%% unused as hok was dropped
+
+% \subsubsection{Put the first word of each paragraph in an \cs{fbox} and append
+% a \P{} sign at the end of the paragraph}
+%
+% We make the assumption that the first word ends in a space so
+% that we can grab it easily (which
+% is of course not quite right). So here is the code for that.
+%\begin{verbatim}
+% \def\firstwordboxed#1 {\fbox{#1} }
+%\end{verbatim}
+% Installing that is then just a matter of putting it into the right
+% hook. Since we don't want to box the indentation (or what comes
+% from \cs{everypar} we shouldn't use \hook{para/begin} but
+% \hook{para/textbegin}.
+% Adding the \P{} is equally simple.
+%\begin{verbatim}
+% \AddToHook{para/textbegin}{\firstwordboxed}
+% \AddToHook{para/end}{\P}
+%\end{verbatim}
+% While this will work more or less flawless (if you accept that it
+% will pick up any punctuation after the first word), it will fail
+% in at least two cases.
+% \begin{itemize}
+% \item Single word paragraphs ending with \cs{par} instead of an
+% empty line will blow up because the \cs{par} will be picked up as
+% part of the argument and error as our \cs{firstwordboxed} doesn't
+% accept a \cs{par} not being long. That is actually good, because
+% picking it up would be worse: it would get ignored inside
+% \cs{fbox} and so the paragraph would be combined with the next
+% (or worse).
+%
+% \item The second problem is, of course, that sticking it into
+% every \hook{para/textbegin} means it get applied to places like
+% \cs{section} which is not really what you want. So some more
+% elaborate mechanism would be necessary---a task for another rainy
+% day.
+% \end{itemize}
+%
+% There is one other point to note here. The \cs{firstwordboxed} is
+% expected to scan ahead. So can that kind of code be placed into a
+% hook? The answer is a kind of yes and no.
+
+% Hooks can receive code from different places, but obviously only
+% one chunk of code can do some scanning ahead, the one that comes
+% last. Any hook code in a different position would see any
+% following code from later chunks as part of the scanning which
+% may or may not be a problem. In fact, even in our simple example,
+% the argument picked up by \cs{firstwordboxed} isn't really the
+% first word of the paragraph. It is that but in front of it there
+% is also the code responsible for running
+% \verb=\AddTohookNext{para/textbegin}=. As long as this is not
+% doing anything harmful it doesn't hurt in this case, but it
+% clearly shows that this example is not as simple as it
+% claims to be and on the whole we have to conclude that hooks
+% aren't really meant to do such scanning or at least not without a
+% lot of precaution.
+%
diff --git a/Master/texmf-dist/source/latex-dev/base/ltpictur.dtx b/Master/texmf-dist/source/latex-dev/base/ltpictur.dtx
index 10773f376cf..b958d43760c 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltpictur.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltpictur.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltplain.dtx b/Master/texmf-dist/source/latex-dev/base/ltplain.dtx
index 0b03fd1364d..fa53cc17ece 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltplain.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltplain.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltsect.dtx b/Master/texmf-dist/source/latex-dev/base/ltsect.dtx
index 70106e2e583..29ea142ba6c 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltsect.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltsect.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltshipout.dtx b/Master/texmf-dist/source/latex-dev/base/ltshipout.dtx
index 2ea0a1b6651..565f35f529c 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltshipout.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltshipout.dtx
@@ -1,6 +1,7 @@
% \iffalse meta-comment
%%
-%% File: ltshipout.dtx (C) Copyright 2020,2021 Frank Mittelbach, LaTeX Team
+%% Copyright (C) 2020-2021
+%% Frank Mittelbach, LaTeX Team
%%
%
% This file is part of the LaTeX base system.
@@ -31,8 +32,8 @@
%%% From File: ltshipout.dtx
%
% \begin{macrocode}
-\providecommand\ltshipoutversion{v1.0d}
-\providecommand\ltshipoutdate{2020/12/06}
+\providecommand\ltshipoutversion{v1.0i}
+\providecommand\ltshipoutdate{2021/01/25}
% \end{macrocode}
%
%<*driver>
@@ -55,6 +56,9 @@
}
\ExplSyntaxOff
+\providecommand\InternalDetectionOff{}
+\providecommand\InternalDetectionOn{}
+
\EnableCrossrefs
\CodelineIndex
\begin{document}
@@ -108,11 +112,50 @@
% It then stores it in a named box register. This box can then be
% manipulated through a set of hooks after which it is shipped out
% for real.
+%
+% Each shipout that actually happens (i.e., where the material is
+% not discarded for one or the other reason) is recorded and the
+% total number is available in a readonly variable and in a
+% \LaTeX{} counter.
+% \end{function}
+%
+%
+% \begin{function}{\RawShipout}
+% This command implements a simplified shipout that bypasses the
+% foreground and background
+% hooks, e.g., only \hook{shipout/firstpage} and
+% \hook{shipout/lastpage} are executed and the total shipout
+% counters are incremented.
+%
+% The command doesn't use \cs{ShipoutBox} but its own private box
+% register so that it can be used inside of shipout hooks to do
+% some additional shipouts while already in the output routine with
+% the current page being stored in \cs{ShipoutBox}. It does have
+% access to \cs{ShipoutBox} if it is used in \hook{shipout/before}
+% (or \hook{shipout/after}) and can use its content.
+%
+% It is safe to use it in \hook{shipout/before} or
+% \hook{shipout/after} but not necessarily in the other
+% \hook{shipout/...} hooks as they are intended for special
+% processing.
% \end{function}
%
% \begin{variable}{\ShipoutBox,\l_shipout_box}
-% This box register is called \cs{ShipoutBox} (alternatively available via the
-% L3 name \cs{l_shipout_box}).
+% This box register is called \cs{ShipoutBox} (alternatively
+% available via the L3 name \cs{l_shipout_box}).
+%
+% During the execution of \hook{shipout/before} this box contains
+% the accumulated material for the page, but not yet any material
+% added by other shipout hooks.
+% During execution of \hook{shipout/after}, i.e., after the shipout
+% has happened, the box also contains any background or foreground
+% material.
+%
+% Material from the hooks \hook{shipout/firstpage} or
+% \hook{shipout/lastpage} is not included (but only used during the
+% actual shipout) to facilitate reuse of the box data (e.g.,
+% \hook{shipout/firstpage} material should never be added to a
+% later page of the output).
% \end{variable}
%
%
@@ -133,11 +176,11 @@
%
% \subsection{Provided hooks}
%
-% \begin{variable}{shipout/before,
+% \begin{variable}{shipout/before,shipout/after,
% shipout/foreground,shipout/background,
% shipout/firstpage,
% shipout/lastpage}
-% The code offers a number of hooks into which packages (or the
+% The code for \cs{shipout} offers a number of hooks into which packages (or the
% user) can add code to support different use cases.
% These are:
% \begin{description}
@@ -148,6 +191,20 @@
% It can be used to alter that box content or to discard it
% completely (see \cs{DiscardShipoutBox} below).
%
+% You can use \cs{RawShipout} inside this hook for special use
+% cases. It can make use of \cs{ShipoutBox} (which doesn't yet
+% include the background and foreground material).
+%
+% \textbf{Note:} It is not possible (or say advisable) to try
+% and use this hook to typeset material with the intention to
+% return it to main vertical list, it will go wrong and give
+% unexpected results in many cases---for starters it will appear
+% after the current page not before or it will vanish or the
+% vertical spacing will be wrong!
+% \end{description}
+% \end{variable}
+%
+% \begin{description}
% \item[\hook{shipout/background}]
%
% This hook adds a picture environment into the background of
@@ -186,9 +243,14 @@
% not discarded at the last minute). It should only contain
% \cs{special} or similar commands needed to direct post processors
% handling the \texttt{.dvi} or \texttt{.pdf} output.\footnotemark
+% \footnotetext{In
+% \LaTeXe{} that was already existing, but implemented using a box
+% register with the name \cs{@begindvibox}.}
%
% ^^A \fmi{not sure it has to be that restrictive.}
%
+% This hook is added to the very first page regardless of how it
+% is shipped out (i.e., with \cs{shipout} or \cs{RawShipout}).
%
% \item[\hook{shipout/lastpage}]
%
@@ -196,6 +258,7 @@
% the output file. It is only executed on the very last page of
% the output file ---
% or rather on the page that \LaTeX{} believes is the last one.
+% Again it is executed regardless of the shipout method.
%
% It may not be possible for \LaTeX{} to correctly determine
% which page is the last one without several reruns. If this
@@ -203,17 +266,32 @@
% extra page to place the material and also request a rerun to
% get the correct placement sorted out.
%
+% \item[\hook{shipout/after}]
+%
+% This hook is executed after a shipout has happened. If the
+% shipout box is discarded this hook is not looked at.
+%
+% You can use \cs{RawShipout} inside this hook for special use
+% cases and the main \cs{ShipoutBox} is still available at this
+% point (but in contrast to \hook{shipout/before} it now
+% includes the background and foreground material).
+%
+% \textbf{Note:} Just like \hook{shipout/before} this hook is
+% not meant to be used for adding adding typeset material back
+% to the main vertical list---it might vanish or the
+% vertical spacing will be wrong!
+%
+%
% \end{description}
-% \end{variable}\footnotetext{In
-% \LaTeXe{} that was already existing, but implemented using a box
-% register with the name \cs{@begindvibox}.}
%
% As mentioned above the hook \hook{shipout/before} is executed
% first and can manipulate the prepared shipout box stored in
% \cs{ShipoutBox} or set things up for use in \cs{write} during the
-% actual shipout. The other hooks are added inside hboxes to the
-% box being shipped out in the following
-% order:
+% actual shipout. It is even run if there was a
+% \cs{DiscardShipoutBox} request in the document.
+%
+% The other hooks (except \hook{shipout/after}) are added inside
+% hboxes to the box being shipped out in the following order:
% \begin{center}
% \begin{tabular}{ll}
% \hook{shipout/firstpage} & only on the first page \\
@@ -226,14 +304,22 @@
% If any of the hooks has no code then that particular no box is
% added at that point.
%
+% Once the (page) box has been shipped out the \hook{shipout/after}
+% hook is called (while you are still inside the output routine). It
+% is not called if the shipout box was discarded.
+%
% In a document that doesn't produce pages, e.g., only makes
-% \cs{typeout}s, none of the hooks are executed (as there is no
+% \cs{typeout}s, none of the hooks are ever executed (as there is no
% \cs{shipout}) not even the \hook{shipout/lastpage} hook.
%
+% If \cs{RawShipout} is used instead of \cs{shipout} then only the
+% hooks \hook{shipout/firstpage} and \hook{shipout/lastpage} are
+% executed (on the first or last page), all others are bypassed.
%
-% \subsection{Legacy \LaTeX{} commands}
%
%
+% \subsection{Legacy \LaTeX{} commands}
+%
% \begin{function}{\AtBeginDvi,\AtEndDvi}
% \cs{AtBeginDvi} is the existing \LaTeXe{} interface to fill the
% \hook{shipout/firstpage} hook. This is not really a good name
@@ -256,12 +342,12 @@
%
% \subsection{Special commands for use inside the hooks}
%
-% \begin{function}{\DiscardShipoutBox,\shipout_discard_box:}
+% \begin{function}{\DiscardShipoutBox,\shipout_discard:}
% \begin{syntax}
% \cs{AddToHookNext} \texttt{\{shipout/before\} \{...\cs{DiscardShipoutBox}...\}}
% \end{syntax}
% The \cs{DiscardShipoutBox} declaration (L3 name
-% \cs{shipout_discard_box:})
+% \cs{shipout_discard:})
% requests that on the next
% shipout the page box is thrown away instead of being shipped to
% the \texttt{.dvi} or \texttt{.pdf} file.
@@ -272,6 +358,8 @@
% Note that if this declaration is used directly in the document it
% may depend on the placement to which page it applies, given that
% \LaTeX{} output routine is called in an asynchronous manner!
+% Thus normally one would use this only as part of the
+% \hook{shipout/before} code.
%
% \fmi{Once we have a new mark mechanism available we can improve
% on that and make sure that the declaration applies to the page
@@ -290,12 +378,28 @@
% names as given below.
%
%
+%
+% \subsection{Provided Lua\TeX\ callbacks}
+%
+% \begin{variable}{pre_shipout_filter}
+% Under Lua\TeX{} the \texttt{pre\_shipout\_filter} Lua callback is
+% provided which gets called immediately before the shipout primitive gets invoked.
+% The signature is
+% \begin{verbatim}
+% function(<node> head)
+% return true
+% end
+% \end{verbatim}
+% The \texttt{head} is the list node corresponding to the box to be shipped out.
+% The return value should always be \texttt{true}.
+% \end{variable}
+%
% \subsection{Information counters}
%
%
% \begin{variable}{\ReadonlyShipoutCounter,\g_shipout_readonly_int}
% \begin{syntax}
-% \cs{ifnum}\cs{ReadOnlyShipoutCounter}\texttt{=...}
+% \cs{ifnum}\cs{ReadonlyShipoutCounter}\texttt{=...}
% \cs{int_use:N} \cs{g_shipout_readonly_int} \texttt{\% expl3 usage}
% \end{syntax}
% This integer holds the number of pages shipped out up to now
@@ -303,6 +407,7 @@
% routine). More precisely, it is incremented only after it is
% clear that a page will be shipped out, i.e., after the
% \hook{shipout/before} hook (because that might discard the page)!
+% In contrast \hook{shipout/after} sees the incremented value.
%
% Just like with the \texttt{page} counter its value is
% only accurate within the output routine. In the body of the
@@ -310,10 +415,11 @@
% asynchronously!
%
% Also important: it \emph{must not} be set, only read. There are
-% no provisions to prevent that but if you do, chaos will be the
-% result. To emphasize this fact it is not provided as a \LaTeX{}
-% counter but as a \TeX{} counter (i.e., a command), so
-% \cs{Alph}\Arg{\cs{ReadonlyShipoutCounter}} etc, would not work.
+% no provisions to prevent that restriction, but if you manipulate
+% it, chaos will be the result. To emphasize this fact it is not
+% provided as a \LaTeX{} counter but as a \TeX{} counter (i.e., a
+% command), so \cs{Alph}\verb={=\cs{ReadonlyShipoutCounter}\verb=}=
+% etc, would not work.
% \end{variable}
%
% \begin{variable}{totalpages,\g_shipout_totalpages_int}
@@ -325,7 +431,8 @@
% \texttt{totalpages} counter is a \LaTeX{} counter and incremented
% for each shipout attempt including those pages that are discarded
% for one or the other reason. Again \hook{shipout/before} sees
-% the counter before it is incremented).
+% the counter before it is incremented. In contrast
+% \hook{shipout/after} sees the incremented value.
%
% Furthermore, while it is incremented for each page, its value is
% never used by \LaTeX. It can therefore be freely reset or changed by user
@@ -427,6 +534,21 @@
% This is the name of the shipout box as \pkg{atbegshi} knows it.
% \end{function}
%
+%
+% \begin{function}{\AtBeginShipoutOriginalShipout}
+% This is the name of the \cs{shipout} primitive as \pkg{atbegshi}
+% knows it. This bypasses all the mechanisms set up by the \LaTeX{}
+% kernel and there are various scenarios in which it can therefore
+% fail. It should only be used to run existing legacy
+% \pkg{atbegshi} code but not in newly developed applications.
+%
+% The kernel alternative is \cs{RawShipout} which is integrated
+% with the \LaTeX{} mechanisms and updates, for example, the
+% \cs{ReadonlyShipoutCounter} counter. Please use \cs{RawShipout}
+% for new code if you want to bypass the before, foreground and
+% background hooks.
+% \end{function}
+%
% \begin{function}{\AtBeginShipoutInit}
% By default \pkg{atbegshi} delayed its action until
% \verb=\begin{document}=. This command was forcing it in an earlier
@@ -591,6 +713,41 @@
% \end{macro}
%
%
+% \begin{macro}{\l_@@_raw_box}
+% The \cs{RawShipout} gets its own box but it is internal as there
+% is no hook manipulation for it.
+% \begin{macrocode}
+\box_new:N \l_@@_raw_box
+% \end{macrocode}
+% \end{macro}
+%
+%
+% \begin{macro}{\@@_finalize_box:}
+% For Lua\TeX{} invoke the \texttt{pre\_shipout\_filter} callback.
+% \changes{v1.0i}{2021/01/22}{Add \texttt{pre\_shipout\_filter} Lua callback}
+% \begin{macrocode}
+\sys_if_engine_luatex:TF
+ {
+ \newluafunction \@@_finalize_box:
+ \exp_args:Nx \everyjob {
+ \exp_not:V \everyjob
+ \exp_not:N \lua_now:n {
+ luatexbase.create_callback('pre_shipout_filter', 'list')
+ local~call, getbox, setbox = luatexbase.call_callback, tex.getbox, tex.setbox~
+ lua.get_functions_table()[\the \@@_finalize_box:] = function()
+ local~result = call('pre_shipout_filter', getbox(\the \l_shipout_box))
+ if~not (result == true) then~
+ setbox(\the \l_shipout_box, result~or~nil)
+ end~
+ end
+ }
+ }
+ \protected \luadef \@@_finalize_box: \the \@@_finalize_box:
+ } {
+ \cs_set_eq:NN \@@_finalize_box: \scan_stop:
+ }
+% \end{macrocode}
+% \end{macro}
%
%
% \begin{macro}{\@@_execute:}
@@ -618,7 +775,8 @@
%
% \begin{macro}{\l_@@_group_level_tl}
% Helper token list to record the group level at which
-% \cs{@@_execute:} is encountered. \begin{macrocode}
+% \cs{@@_execute:} is encountered.
+% \begin{macrocode}
\tl_new:N \l_@@_group_level_tl
% \end{macrocode}
% \end{macro}
@@ -632,28 +790,78 @@
\cs_new:Npn \@@_execute_test_level: {
\int_compare:nNnT
\l_@@_group_level_tl < \tex_currentgrouplevel:D
- \tex_aftergroup:D
- \@@_execute_cont:
+ \tex_aftergroup:D \@@_execute_cont:
}
% \end{macrocode}
% \end{macro}
%
%
% \begin{macro}{\@@_execute_cont:}
+% This does the actual shipout running several hooks as part of it.
+% The code for them is passed as argument \verb=#2= to \verb=#4=
+% to \cs{@@_execute_main_cont:Nnnn}; the first argument is the box
+% to be shipped out.
+% \begin{macrocode}
+\cs_new:Npn \@@_execute_cont: {
+ \@@_execute_main_cont:Nnnn
+ \l_shipout_box
+ { \hook_use:n {shipout/before} }
+ { \hook_if_empty:nF {shipout/foreground}
+ { \@@_add_foreground_picture:n
+ { \hook_use:n {shipout/foreground} } }
+% \end{macrocode}
+% If the user hook for the background (\hook{shipout/background}) has
+% no code, there might still code in the kernel hook so we need to
+% test for this too.
+% We only test for the \cs{@kernel@before@shipout@background}
+% though. If the \cs{@kernel@after@shipout@background} needs
+% executing even if the user hook is empty then we can add another
+% test (or the kernel could put something into the before hook).
+%
+% \changes{v1.0d}{2020/11/23}{Check for both kernel and user hook (gh/431)}
+% \changes{v1.0f}{2021/01/08}{Added another kernel hook for more
+% flexibility (cf \texttt{https://github.com/pgf-tikz/pgf/issues/960}}
+% \begin{macrocode}
+ \bool_lazy_and:nnF
+ { \hook_if_empty_p:n {shipout/background} }
+ { \tl_if_empty_p:N \@kernel@before@shipout@background }
+ { \@@_add_background_picture:n
+ { \@kernel@before@shipout@background
+ \hook_use:n {shipout/background}
+ \@kernel@after@shipout@background }
+ }
+ }
+ { \hook_use:n {shipout/after} }
+}
+% \end{macrocode}
+% \end{macro}
+%
+%
+% \begin{macro}{\@@_execute_main_cont:Nnnn}
% When we have reached this point the shipout box has been
% processed and is available in \cs{l_shipout_box} and ready for
-% real ship out (perhaps)..
+% real ship out (unless it gets discarded during the process).
+%
+% The three arguments hold hook code that is executed just before the
+% actual shipout (\verb=#1=), within the shipout adding
+% background and foreground material (\verb=#2=) and after the
+% shipout has happened (\verb=#3=).
+% These are passed as arguments because the same code without those
+% hooks is also used when doing a ``raw'' shipout implemented by
+% \cs{RawShipout}.
+% The only hook that is always executed is that for the very last
+% page, i.e., \hook{shipout/lastpage}.
%
% First we quickly check if it is void (can't happen in the
% standard \LaTeX{} output routine but \cs{shipout} might be called
% from a package that has some special processing logic). If it is
% void we aren't shipping anything out and processing ends.\footnote{In that
-% case we don't reset the deadcyles, that would be up to the OR
+% case we don't reset the deadcycles, that would be up to the OR
% processing logic to do.}
% \begin{macrocode}
-\cs_new:Npn \@@_execute_cont: {
- \box_if_empty:NTF \l_shipout_box
- { \PackageWarning{ltshipout}{Ignoring~ void~ shipout~ box} }
+\cs_new:Npn \@@_execute_main_cont:Nnnn #1#2#3#4 {
+ \box_if_empty:NTF #1
+ { \@latex@warning{Ignoring~ void~ shipout~ box} }
{
% \end{macrocode}
% Otherwise we assume that we will ship something and prepare for
@@ -661,7 +869,8 @@
% \cs{protect} while we are running the hook code).
% We also save the current \cs{protect} state to restore it later.
% \begin{macrocode}
- \bool_gset_false:N \g_@@_discard_bool
+% \bool_gset_false:N \g_@@_discard_bool % setting this would disable
+ % \DiscardShipoutBox on doc-level
\cs_set_eq:NN \@@_saved_protect: \protect
\set@typeset@protect
% \end{macrocode}
@@ -670,11 +879,12 @@
% necessary as the code could access them via \cs{box_ht:N}, etc.,
% but it is perhaps convenient.}
% \begin{macrocode}
- \@@_get_box_size:N \l_shipout_box
+ \@@_get_box_size:N #1
% \end{macrocode}
-% Then we execute the \hook{shipout/before} hook.
+% Then we execute the \hook{shipout/before} hook (or nothing in
+% case of \cs{RawShipout}).
% \begin{macrocode}
- \hook_use:n {shipout/before}
+ #2
% \end{macrocode}
% In \cs{g_shipout_totalpages_int} we count all shipout attempts so
% we increment that counter already here (the other one is
@@ -693,7 +903,7 @@
% we now test for it.
% \begin{macrocode}
\bool_if:NTF \g_@@_discard_bool
- { \PackageInfo{ltshipout}{Completed~ page~ discarded}
+ { \@latex@info@no@line{Completed~ page~ discarded}
\bool_gset_false:N \g_@@_discard_bool
% \end{macrocode}
% As we are discarding the page box and not shipping anything out,
@@ -707,7 +917,7 @@
% needed? Or the resetting of \cs{protect} to its kernel value?}
% \begin{macrocode}
% \group_begin:
-% \box_set_eq_drop:NN \l_shipout_box \l_shipout_box
+% \box_set_eq_drop:NN #1 #1
% \group_end:
% \cs_set_eq:NN \protect \exp_not:N
}
@@ -718,8 +928,8 @@
% once more but this time make it a warning, because the best
% practice way is to use the request mechanism.
% \begin{macrocode}
- { \box_if_empty:NTF \l_shipout_box
- { \PackageWarning{ltshipout}{
+ { \box_if_empty:NTF #1
+ { \@latex@warning{
Shipout~ box~ was~ voided~ by~ hook,\MessageBreak
ignoring~ shipout~ box }
}
@@ -743,33 +953,36 @@
% changed) and then look at the hooks \hook{shipout/foreground}
% and \hook{shipout/background}. If either or both are non-empty
% we add a \texttt{picture} environment to the box (in the
-% foreground and or in the background) and execute the hook code
+% foreground and/or in the background) and execute the hook code
% inside that environment.
%
% \begin{macrocode}
- \@@_get_box_size:N \l_shipout_box
- \hook_if_empty:nF {shipout/foreground}
- { \@@_add_foreground_picture:n
- { \hook_use:n {shipout/foreground} } }
+ \@@_get_box_size:N #1
% \end{macrocode}
-% If there is no user hook, there might still code in the kernel hook.
-% \changes{v1.0d}{2020/11/23}{Check for both kernel and user hook (gh/431)}
+% The first hook we run is the \hook{shipout/firstpage} hook. This
+% is only done once, then the \cs{@@_run_firstpage_hook:}
+% command redefines itself to do nothing. If the hook contains
+% \cs{special}s for integration at the top of the page they will be
+% temporarily stored in a safe place and added later with
+% \cs{@@_add_firstpage_specials:}.
+% \begin{macrocode}
+ \@@_run_firstpage_hook:
+% \end{macrocode}
+% Run the hooks for background and foreground or, if this
+% is called by \cs{RawShipout}, copy the box \cs{l_@@_raw_box} to
+% \cs{l_shipout_box} so that firstpage and lastpage material gets
+% added if necessary (that is always done to \cs{l_shipout_box}.
% \begin{macrocode}
- \bool_lazy_and:nnF
- { \hook_if_empty_p:n {shipout/background} }
- { \tl_if_empty_p:N \@kernel@before@shipout@background }
- { \@@_add_background_picture:n
- { \@kernel@before@shipout@background
- \hook_use:n {shipout/background} } }
+ #3
% \end{macrocode}
-% We then run \cs{@@_execute_firstpage_hook:} that adds
+% We then run \cs{@@_add_firstpage_specials:} that adds
% the content of the hook \hook{shipout/firstpage} to the
% start of the first page (if non-empty). It is then redefined to
% do nothing on later pages.
% \begin{macrocode}
- \@@_execute_firstpage_hook:
+ \@@_add_firstpage_specials:
% \end{macrocode}
-% The we check if we have to add the \hook{shipout/lastpage} hook
+% Then we check if we have to add the \hook{shipout/lastpage} hook
% or the corresponding kernel hook
% because we have reached the last page. This test will be false for
% all but one (and hopefully the correct) page.
@@ -780,12 +993,14 @@
{ \hook_if_empty_p:n {shipout/lastpage} }
{ \tl_if_empty_p:N \@kernel@after@shipout@lastpage }
{ \@@_debug:n { \typeout{Executing~ lastpage~ hook~
- on~ page~ \int_use:N \g_shipout_readonly_int } }
- \_@@_add_foreground_box:n { \UseHook{shipout/lastpage}
- \@kernel@after@shipout@lastpage }
+ on~ page~ \int_use:N \g_shipout_readonly_int } }
+ \_@@_add_foreground_box:n
+ { \UseHook{shipout/lastpage}
+ \@kernel@after@shipout@lastpage }
}
\bool_gset_true:N \g_@@_lastpage_handled_bool
}
+ \@@_finalize_box:
% \end{macrocode}
% Finally we run the actual \TeX{} primitive for shipout. As that will
% expand delayed \cs{write} statements inside the page in which
@@ -794,6 +1009,21 @@
% \begin{macrocode}
\cs_set_eq:NN \protect \exp_not:N
\tex_shipout:D \box_use:N \l_shipout_box
+% \end{macrocode}
+% The \cs{l_shipout_box} may contain the firstpage material if this
+% was the very first shipout. That makes it unsuitable for reuse in
+% another shipout, so as a safety measure the next command resets
+% \cs{l_shipout_box} to its earlier state if that is necessary. On
+% later pages this is then a no-op.
+% \begin{macrocode}
+ \@@_drop_firstpage_specials:
+% \end{macrocode}
+% The \hook{shipout/after} hook (if in \verb=#4=) needs to run with
+% \cs{protect}ed commands again being executed, because that hook
+% will ``typeset'' material added at the top of the next page.
+% \begin{macrocode}
+ \set@typeset@protect
+ #4
}
}
% \end{macrocode}
@@ -808,6 +1038,54 @@
% \end{macro}
%
%
+%
+%
+% \begin{macro}{\@@_execute_raw:,
+% \@@_execute_test_level_raw:}
+%
+% This implements the ``raw'' shipout which bypasses the before,
+% foreground, background and after hooks. It follows the same pattern than
+% \cs{_@@_execute_raw:} except that it finally calls
+% \cs{_@@_execute_main_cont:Nnnn} with three empty arguments.
+% instead of the hook code.
+% \begin{macrocode}
+\cs_set_protected:Npn \@@_execute_raw: {
+ \tl_set:Nx \l_@@_group_level_tl
+ { \int_value:w \tex_currentgrouplevel:D }
+ \tex_afterassignment:D \@@_execute_test_level_raw:
+ \tex_setbox:D \l_@@_raw_box
+}
+% \end{macrocode}
+%
+% \begin{macrocode}
+\cs_new:Npn \@@_execute_test_level_raw: {
+ \int_compare:nNnT
+ \l_@@_group_level_tl < \tex_currentgrouplevel:D
+ \tex_aftergroup:D \@@_execute_nohooks_cont:
+}
+% \end{macrocode}
+% Well, not totally empty arguments, we add some debugging if we
+% are actually doing a shipout.
+% \begin{macrocode}
+\cs_new:Npn \@@_execute_nohooks_cont: {
+ \@@_execute_main_cont:Nnnn \l_@@_raw_box
+ {} { \@@_debug:n{ \typeout{Doing~ raw~ shipout~ ...} }
+ \box_set_eq:NN \l_shipout_box \l_@@_raw_box } {}
+}
+% \end{macrocode}
+% \end{macro}
+
+% \begin{macro}{\RawShipout}
+% The interface name for raw shipout.
+% \changes{v1.0g}{2021/01/10}{Macro added}
+% \begin{macrocode}
+\cs_gset_eq:NN \RawShipout \@@_execute_raw:
+% \end{macrocode}
+% \end{macro}
+%
+%
+%
+%
% \begin{macro}{\@@_saved_protect:}
% Remember the current \cs{protect} state.
% \begin{macrocode}
@@ -815,13 +1093,14 @@
% \end{macrocode}
% \end{macro}
%
-% \begin{macro}{shipout/before,
+% \begin{macro}{shipout/before,shipout/after,
% shipout/foreground,shipout/background,
% shipout/firstpage,
% shipout/lastpage}
% Declaring all hooks for the shipout code.
% \begin{macrocode}
\hook_new:n{shipout/before}
+\hook_new:n{shipout/after}
\hook_new:n{shipout/foreground}
\hook_new:n{shipout/background}
\hook_new:n{shipout/firstpage}
@@ -832,36 +1111,71 @@
%
%
% \begin{macro}{\@kernel@after@shipout@lastpage,
-% \@kernel@before@shipout@background}
+% \@kernel@before@shipout@background,
+% \@kernel@after@shipout@background}
% And here are the internal kernel hooks going before or after the
% public ones where needed.
+% \changes{v1.0g}{2021/01/10}{Internal hook
+% \cs{@kernel@after@shipout@background} added}
% \begin{macrocode}
\let\@kernel@after@shipout@lastpage\@empty
\let\@kernel@before@shipout@background\@empty
+\let\@kernel@after@shipout@background\@empty
% \end{macrocode}
% \end{macro}
%
%
-% \begin{macro}{\@@_execute_firstpage_hook: }
-% This command adds any specials into a box and adds that to the
-% very beginning of the first box shipped out. After that we
-% redefine it to do nothing on later pages.
+% \begin{macro}{\@@_run_firstpage_hook:}
+%
+% \changes{v1.0h}{2021/01/19}{Handling of firstpage hook altered}
+%
+% There are three commands to handle the \hook{shipout/firstpage}
+% hook:
+% \cs{@@_run_firstpage_hook:}, \cs{@@_add_firstpage_specials:} and
+% \cs{@@_drop_firstpage_specials:}.
+%
+% That hook is supposed to contain \cs{special}s and similar
+% material to be placed at the very beginning of the output page
+% and so it needs careful placing to avoid that anything else gets
+% in front of it. And this means we have to wait with this until
+% other hooks such as \hook{shipout/background} have added their
+% bits. It is also important that such \cs{special}s show up only
+% on the very first page, so if this page gets saved before
+% \cs{shipout} for later reuse, we have to make sure that they
+% aren't in the saved version.
+%
+% In addition the hook may also contain code to be executed ``first'', e.g.,
+% visible from code in \hook{shipout/background} and this conflicts
+% with adding the \cs{special}s late.
+%
+% Therefore the processing is split into different parts:
+% \cs{@@_run_firstpage_hook:} is done early and checks if there is
+% any material in the hook.
% \begin{macrocode}
-\cs_new:Npn \@@_execute_firstpage_hook: {
+\cs_new:Npn \@@_run_firstpage_hook: {
+ \hook_if_empty:nTF {shipout/firstpage}
% \end{macrocode}
-% Adding something to the beginning means adding it to the
-% background as that layer is done first in the output. Of course
-% that is only needed if the hook actually contains anything.
+% If not then we define the other two commands to do nothing.
% \begin{macrocode}
- \hook_if_empty:nF {shipout/firstpage}
- { \@@_add_background_box:n { \UseHook{shipout/firstpage} } }
+ {
+ \cs_gset_eq:NN \@@_add_firstpage_specials: \prg_do_nothing:
+ \cs_gset_eq:NN \@@_drop_firstpage_specials: \prg_do_nothing:
+ }
+% \end{macrocode}
+% If there is material we execute inside a box, which means any
+% \cs{special} will end up in that box and any other code is
+% executed and can have side effects (as long as they are global).
+% \begin{macrocode}
+ {
+ \hbox_set:Nn \l_@@_firstpage_box { \UseHook{shipout/firstpage} }
+ }
% \end{macrocode}
% Once we are here we change the definition to do nothing next time
% and we also change the command used to implement \cs{AtBeginDvi}
-% to become a warning and not add further material to a hook that
+% to become a warning and not add further material to a hook that
% is never used again.
% \begin{macrocode}
- \cs_gset_eq:NN \@@_execute_firstpage_hook: \prg_do_nothing:
+ \cs_gset_eq:NN \@@_run_firstpage_hook: \prg_do_nothing:
\cs_gset:Npn \@@_add_firstpage_material:Nn ##1 ##2 {
\@latex@warning{
First~ page~ is~ already~ shipped~ out,~ ignoring\MessageBreak
@@ -869,8 +1183,67 @@
}
}
% \end{macrocode}
+% \end{macro}
+%
+%
+%
+% \begin{macro}{\@@_add_firstpage_specials:,\@@_drop_firstpage_specials:}
+% The \cs{@@_add_firstpage_specials:} then adds the \cs{special}s
+% stored in \cs{l_@@_firstpage_box} to the page to be shipped out
+% when the time is ready. Note that if there was no material in the
+% \hook{shipout/firstpage} hook then this command gets redefined to
+% do nothing. But for most documents there is something, e.g., some
+% PostScript header, or some meta data declaration, etc.\ so by
+% default we assume there is something to do.
+% \begin{macrocode}
+\cs_new:Npn \@@_add_firstpage_specials: {
+% \end{macrocode}
+% First we make a copy of the \cs{l_shipout_box} that we can
+% restore it later on.
+% \begin{macrocode}
+ \box_set_eq:NN \l_@@_raw_box \l_shipout_box
+% \end{macrocode}
+% Adding something to the beginning means adding it to the
+% background as that layer is done first in the output.
+% \begin{macrocode}
+ \@@_add_background_box:n { \hbox_unpack_drop:N \l_@@_firstpage_box }
+% \end{macrocode}
+% After the actual shipout \cs{@@_drop_firstpage_specials:} is
+% run to
+% restore the earlier content of \cs{l_shipout_box} and then
+% redefines itself again to do nothing.
+%
+% As a final act we change the definition to do nothing next time.
+% \begin{macrocode}
+ \cs_gset_eq:NN \@@_add_firstpage_specials: \prg_do_nothing:
+}
+% \end{macrocode}
+%
+% The \cs{@@_drop_firstpage_specials:} is run after the shipout has
+% occurred but before the \hook{shipout/afterpage} hook is executed.
+% That is the point where we have to restore the \cs{ShipoutBox} to
+% its state without the \hook{shipout/firstpage} material.
+% \begin{macrocode}
+\cs_new:Npn \@@_drop_firstpage_specials: {
+ \box_set_eq:NN \l_shipout_box \l_@@_raw_box
+% \end{macrocode}
+% If there was no such material then \cs{@@_run_firstpage_hook:}
+% will have changed the definition to a no-op already. Otherwise
+% this is what we do here.
+% \begin{macrocode}
+ \cs_gset_eq:NN \@@_drop_firstpage_specials: \prg_do_nothing:
+ }
+% \end{macrocode}
% \end{macro}
%
+
+% \begin{macro}{\l_@@_firstpage_box}
+% The box to hold any firstpage \cs{special}s.
+% \begin{macrocode}
+\box_new:N \l_@@_firstpage_box
+% \end{macrocode}
+% \end{macro}
+
%
% \begin{macro}{\g_@@_lastpage_handled_bool}
% A boolean to signal if we have already handled the
@@ -911,8 +1284,8 @@
\dim_set:Nn \l_shipout_box_ht_dim { \box_ht:N #1 }
\dim_set:Nn \l_shipout_box_dp_dim { \box_dp:N #1 }
\dim_set:Nn \l_shipout_box_wd_dim { \box_wd:N #1 }
- \dim_set:Nn \l_shipout_box_ht_plus_dp_dim { \l_shipout_box_ht_dim +
- \l_shipout_box_dp_dim }
+ \dim_set:Nn \l_shipout_box_ht_plus_dp_dim
+ { \l_shipout_box_ht_dim + \l_shipout_box_dp_dim }
}
% \end{macrocode}
% \end{macro}
@@ -1442,7 +1815,8 @@
% defined so we better not use \cs{cs_new_protected:Npn} here.
% \changes{v1.0d}{2020/11/24}{Support for roll forward (gh/434)}
% \begin{macrocode}
-\cs_set_protected:Npn \AtBeginDvi {\@@_add_firstpage_material:Nn \AtBeginDvi}
+\cs_set_protected:Npn \AtBeginDvi
+ {\@@_add_firstpage_material:Nn \AtBeginDvi}
% \end{macrocode}
% \end{macro}
%
@@ -1471,6 +1845,7 @@
% \@expl@@@shipout@add@foreground@picture@@n}
% Some internals needed elsewhere.
%
+% \InternalDetectionOff
% \begin{macrocode}
\cs_set_eq:NN \@expl@@@shipout@add@firstpage@material@@Nn
\__shipout_add_firstpage_material:Nn
@@ -1495,6 +1870,7 @@
\cs_set_eq:NN \@expl@@@shipout@add@foreground@picture@@n
\__shipout_add_foreground_picture:n
% \end{macrocode}
+% \InternalDetectionOn
% \end{macro}
%
% \begin{macrocode}
@@ -1524,6 +1900,7 @@
%<latexrelease> \csname tex_shipout:D\endcsname
%<latexrelease>\fi
%<latexrelease>
+%<latexrelease>\let \RawShipout\@undefined
%<latexrelease>\let \ShipoutBox\@undefined
%<latexrelease>\let \ReadonlyShipoutCounter \@undefined
%<latexrelease>\let \c@totalpages \@undefined
@@ -1547,23 +1924,13 @@
%<latexrelease>\let \ShipoutBoxDepth \@undefined
%<latexrelease>\let \ShipoutBoxWidth \@undefined
%<latexrelease>
-%<latexrelease>\let \AtBeginShipoutDiscard \@undefined
-%<latexrelease>
-%<latexrelease>\let \AtBeginShipoutAddToBox \@undefined
-%<latexrelease>\let \AtBeginShipoutAddToBoxForeground \@undefined
-%<latexrelease>\let \AtBeginShipoutUpperLeft \@undefined
-%<latexrelease>\let \AtBeginShipoutUpperLeftForeground \@undefined
-%<latexrelease>
% \end{macrocode}
% We do not undo a substitution when rolling back. As the file
% support gets undone the underlying data is no longer used (and
% sufficiently obscure that it should not interfere with existing
% commands) and properly removing it would mean we need to make the
-% \cs{unclare@...} and its support macros available in all earlier
+% \cs{undeclare@...} and its support macros available in all earlier
% kernel releases which is pointless (and actually worse).
-% \begin{macrocode}
-%\undeclare@file@substitution{everyshi.sty}
-% \end{macrocode}
%
% \begin{macrocode}
%<latexrelease>
@@ -1647,7 +2014,7 @@
% \begin{macrocode}
%<*atbegshi-ltx>
\ProvidesPackage{atbegshi-ltx}
- [2020/10/15 v1.0b
+ [2021/01/10 v1.0c
Emulation of the original atbegshi^^Jpackage with kernel methods]
% \end{macrocode}
%
@@ -1659,6 +2026,7 @@
% \end{macro}
%
%
+%
% \begin{macro}{\AtBeginShipoutInit}
% Compatibility only, we aren't delaying \ldots
% \begin{macrocode}
@@ -1712,6 +2080,19 @@
% \end{macrocode}
% \end{macro}
%
+% \begin{macro}{\AtBeginShipoutOriginalShipout}
+% This offers the raw \cs{shipout} primitive of the engine. A page
+% shipped out with this is not counted by
+% \cs{ReadonlyShipoutCounter} counter and thus the mechanism to
+% place \cs{special}s at the very end of the output might fail,
+% etc. It should therefore not be used in new applications but is
+% only provided to allow running legacy code. For new code use the
+% commands provided by the kernel instead.
+% \begin{macrocode}
+\ExplSyntaxOn
+\cs_new_eq:NN \AtBeginShipoutOriginalShipout \tex_shipout:D
+% \end{macrocode}
+% \end{macro}
%
%
% \begin{macro}{\ShipoutBoxHeight,\ShipoutBoxWidth,\ShipoutBoxDepth}
@@ -1720,7 +2101,6 @@
% \verb=\the\ht<box>= value. This may has some implications in some
% use cases and if that is a problem then it might need changing.
% \begin{macrocode}
-\ExplSyntaxOn
\cs_new:Npn \ShipoutBoxHeight { \dim_use:N \l_shipout_box_ht_dim }
\cs_new:Npn \ShipoutBoxDepth { \dim_use:N \l_shipout_box_dp_dim }
\cs_new:Npn \ShipoutBoxWidth { \dim_use:N \l_shipout_box_wd_dim }
@@ -1747,56 +2127,8 @@
%
% \subsection{Package \pkg{everyshi} emulation}
%
-% \begin{macrocode}
-%<*everyshi-ltx>
-% \end{macrocode}
-%
-% \begin{macrocode}
-\ProvidesPackage{everyshi-ltx}
- [2020/10/15 v1.0b
- Emulation of the original everyshi^^Jpackage with kernel methods]
-% \end{macrocode}
-%
-% \begin{macro}{\EveryShipout,\AtNextShipout}
-% This package has only two public commands so simulating it is easy:
-% \begin{macrocode}
-\protected \def \EveryShipout {\AddToHook{shipout/before}}
-\protected \def \AtNextShipout {\AddToHookNext{shipout/before}}
-% \end{macrocode}
-% \end{macro}
-%
-% \begin{macrocode}
-% This is one difference between \pkg{everyshi} and the kernel
-% implementation, the latter does not directly use box 255.
-%
-% For usage by ordinary users this makes no difference but of a
-% package use complicated code together with \pkg{everyshi} and
-% directly manipulates box 255 then this package needs updating.
-% In most cases the updates are simple because the kernel offers
-% hooks that makes such complicated code unnecessary.
-%
-% We therefore add a little file into the adjusted package
-% \begin{macrocode}
-%%
-%% In normal circumstances the above emulation is sufficient and in
-%% all known packages (we know of) that use everyshi it either works or
-%% the packages have been adjusted.
-%%
-%% Code that directly manipulates box 255, however, might fail.
-%% If that is the case look at the shipout hooks offered now as
-%% they are normally sufficient to avoid such manipulations (or
-%% replace box 255 with \ShipoutBox in the code.
-%%
-%</everyshi-ltx>
-% \end{macrocode}
-%
-%
-% If the package is requested we substitute the one above:
-% \begin{macrocode}
-%<*2ekernel>
-\declare@file@substitution{everyshi.sty}{everyshi-ltx.sty}
-%</2ekernel>
-% \end{macrocode}
+% This is now directly handled in that package so emulation is not
+% necessary any more.
%
%
% Rather important :-)
diff --git a/Master/texmf-dist/source/latex-dev/base/ltspace.dtx b/Master/texmf-dist/source/latex-dev/base/ltspace.dtx
index 8b933e8c971..17fb0d65185 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltspace.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltspace.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/lttab.dtx b/Master/texmf-dist/source/latex-dev/base/lttab.dtx
index 545b30d3af1..a964b365753 100644
--- a/Master/texmf-dist/source/latex-dev/base/lttab.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/lttab.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/lttextcomp.dtx b/Master/texmf-dist/source/latex-dev/base/lttextcomp.dtx
index 3ea90d005f9..d840f0448b9 100644
--- a/Master/texmf-dist/source/latex-dev/base/lttextcomp.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/lttextcomp.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 2019-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -26,6 +26,9 @@
% extension .ins) which are part of the distribution.
%
% \fi
+%
+%%% From File: lttextcomp.dtx
+%
% \iffalse
%
%<*driver>
@@ -33,7 +36,7 @@
%
%
\ProvidesFile{lttextcomp.dtx}
- [2020/12/05 v1.0d LaTeX Kernel (text companion symbols)]
+ [2021/01/20 v1.0d LaTeX Kernel (text companion symbols)]
% \iffalse
\documentclass{ltxdoc}
\begin{document}
@@ -362,13 +365,14 @@
}
% \end{macrocode}
% \end{macro}
-
-
-
-
+%
+%
+%
+%
+%
% \begin{macro}{\tc@fake@euro}
% |\tc@fake@euro| is an example of a ``fake'' definition to use in arg |#3| of
-% |\CheckEncodingSubset| when a symbol is not available in a
+% the command |\CheckEncodingSubset| when a symbol is not available in a
% certain font family. Here we produce a poor man's Euro symbol by combining
% a ``C'' with a ``=''.
% \begin{macrocode}
@@ -386,10 +390,10 @@
}
% \end{macrocode}
% \end{macro}
-
-
-
-
+%
+%
+%
+%
% \begin{macro}{\tc@check@symbol}
% \begin{macro}{\tc@check@accent}
% These are two abbreviations that we use below to check symbols
@@ -401,12 +405,12 @@
% to ensure that |\textcurrency| is only typeset if the current
% font has a \texttt{TS1} subset id of less than 3. Otherwise
% |\tc@error| is called telling the user that for this font family
-% |\textcurreny| is not available.
+% |\textcurrency| is not available.
% \begin{macrocode}
\def\tc@check@symbol{\CheckEncodingSubset\UseTextSymbol{TS1}\tc@subst}
% \end{macrocode}
%
-% Accents and been mad an error in the \texttt{textcomp} package when
+% Accents have been made an error in the \texttt{textcomp} package when
% not available. Now that we provide the functionality in the
% kernel we avoid the error by swapping in a \texttt{T1} accent if
% the \texttt{TS1} accent is not available.
@@ -415,7 +419,8 @@
% \end{macrocode}
%
% \begin{macrocode}
-\def\tc@check@accent#1{\CheckEncodingSubset\UseTextAccent{TS1}{\tc@swap@accent#1}}
+\def\tc@check@accent#1{\CheckEncodingSubset\UseTextAccent
+ {TS1}{\tc@swap@accent#1}}
\def\tc@swap@accent#1#2{\UseTextAccent{T1}#1}
% \end{macrocode}
% \end{macro}
@@ -430,17 +435,17 @@
%
% \begin{macrocode}
\DeclareTextSymbolDefault{\textdollar}{TS1}
-\UndeclareTextCommand{\textdollar} {OT1} % don't use the OT1 def any longer
+\UndeclareTextCommand{\textdollar}{OT1} % don't use the OT1 def any longer
% \end{macrocode}
%
% \begin{macrocode}
\DeclareTextSymbolDefault{\textsterling}{TS1}
-\UndeclareTextCommand{\textsterling}{OT1} % don't use the OT1 def any longer
+\UndeclareTextCommand{\textsterling}{OT1}% don't use the OT1 def any longer
% \end{macrocode}
%
% \begin{macrocode}
\DeclareTextSymbolDefault{\textperthousand}{TS1}
-\UndeclareTextCommand{\textperthousand}{T1} % don't use the T1 def
+\UndeclareTextCommand{\textperthousand}{T1} % don't use the T1 def
% \end{macrocode}
% Using \cs{UndeclareTextCommand} above is enough only if the
% encoding definition files are not reloaded afterwards. In the
@@ -462,9 +467,9 @@
% \end{macrocode}
%
% And here are the other \texttt{TS1} glyphs that are implemented
-% by every font (or nearly everyone---a few are commented out and
+% by every font (or nearly every---a few are commented out and
% moved to sub-encoding 9,
-% because they aren't around in one or two fonts.
+% because they aren't around in some fonts.
% \begin{macrocode}
%%\DeclareTextSymbolDefault{\textbardbl}{TS1} % subst in sub-enc 9 above
\DeclareTextSymbolDefault{\textbrokenbar}{TS1}
@@ -541,31 +546,49 @@
%
% \begin{macrocode}
\ifx\Umathcode\@undefined
- \DeclareTextCommandDefault{\capitalacute} {\tc@check@accent{\'}2\capitalacute}
- \DeclareTextCommandDefault{\capitalbreve} {\tc@check@accent{\u}2\capitalbreve}
- \DeclareTextCommandDefault{\capitalcaron} {\tc@check@accent{\v}2\capitalcaron}
- \DeclareTextCommandDefault{\capitalcedilla} {\tc@check@accent{\c}2\capitalcedilla}
- \DeclareTextCommandDefault{\capitalcircumflex} {\tc@check@accent{\^}2\capitalcircumflex}
- \DeclareTextCommandDefault{\capitaldieresis} {\tc@check@accent{\"}2\capitaldieresis}
- \DeclareTextCommandDefault{\capitaldotaccent} {\tc@check@accent{\.}2\capitaldotaccent}
- \DeclareTextCommandDefault{\capitalgrave} {\tc@check@accent{\`}2\capitalgrave}
- \DeclareTextCommandDefault{\capitalhungarumlaut}{\tc@check@accent{\H}2\capitalhungarumlaut}
- \DeclareTextCommandDefault{\capitalmacron} {\tc@check@accent{\=}2\capitalmacron}
- \DeclareTextCommandDefault{\capitalogonek} {\tc@check@accent{\k}2\capitalogonek}
- \DeclareTextCommandDefault{\capitalring} {\tc@check@accent{\r}2\capitalring}
- \DeclareTextCommandDefault{\capitaltie} {\tc@check@accent{\t}2\capitaltie}
- \DeclareTextCommandDefault{\capitaltilde} {\tc@check@accent{\~}2\capitaltilde}
+ \DeclareTextCommandDefault{\capitalacute}
+ {\tc@check@accent{\'}2\capitalacute}
+ \DeclareTextCommandDefault{\capitalbreve}
+ {\tc@check@accent{\u}2\capitalbreve}
+ \DeclareTextCommandDefault{\capitalcaron}
+ {\tc@check@accent{\v}2\capitalcaron}
+ \DeclareTextCommandDefault{\capitalcedilla}
+ {\tc@check@accent{\c}2\capitalcedilla}
+ \DeclareTextCommandDefault{\capitalcircumflex}
+ {\tc@check@accent{\^}2\capitalcircumflex}
+ \DeclareTextCommandDefault{\capitaldieresis}
+ {\tc@check@accent{\"}2\capitaldieresis}
+ \DeclareTextCommandDefault{\capitaldotaccent}
+ {\tc@check@accent{\.}2\capitaldotaccent}
+ \DeclareTextCommandDefault{\capitalgrave}
+ {\tc@check@accent{\`}2\capitalgrave}
+ \DeclareTextCommandDefault{\capitalhungarumlaut}
+ {\tc@check@accent{\H}2\capitalhungarumlaut}
+ \DeclareTextCommandDefault{\capitalmacron}
+ {\tc@check@accent{\=}2\capitalmacron}
+ \DeclareTextCommandDefault{\capitalogonek}
+ {\tc@check@accent{\k}2\capitalogonek}
+ \DeclareTextCommandDefault{\capitalring}
+ {\tc@check@accent{\r}2\capitalring}
+ \DeclareTextCommandDefault{\capitaltie}
+ {\tc@check@accent{\t}2\capitaltie}
+ \DeclareTextCommandDefault{\capitaltilde}
+ {\tc@check@accent{\~}2\capitaltilde}
% \end{macrocode}
% For \cs{newtie} and \cs{capitalnewtie} this is actually wrong, they should pick up
% the accent from the substitution font (not done yet).
% \begin{macrocode}
- \DeclareTextCommandDefault{\newtie} {\tc@check@accent{\t}2\newtie}
- \DeclareTextCommandDefault{\capitalnewtie} {\tc@check@accent{\t}2\capitalnewtie}
+ \DeclareTextCommandDefault{\newtie}
+ {\tc@check@accent{\t}2\newtie}
+ \DeclareTextCommandDefault{\capitalnewtie}
+ {\tc@check@accent{\t}2\capitalnewtie}
% \end{macrocode}
%
% In Unicode engines we just execute the simple accents:
-% \changes{v1.0c}{2020/02/10}{Use \cs{@tabacckludge} for tabbing where necessary (gh/271)}
-% \changes{v1.0d}{2020/04/29}{Make all capital accents text commands for hyperref (gh/332)}
+% \changes{v1.0c}{2020/02/10}{Use \cs{@tabacckludge} for
+% tabbing where necessary (gh/271)}
+% \changes{v1.0d}{2020/04/29}{Make all capital accents text
+% commands for hyperref (gh/332)}
% \begin{macrocode}
\else
\DeclareTextCommandDefault\capitalacute{\@tabacckludge'}
@@ -593,8 +616,10 @@
% The next two symbols exist in some fonts (faked?), but we ignore
% that to keep the subsets reasonable compact and most important linear.
% \begin{macrocode}
-\DeclareTextCommandDefault{\textlbrackdbl} {\tc@check@symbol2\textlbrackdbl}
-\DeclareTextCommandDefault{\textrbrackdbl} {\tc@check@symbol2\textrbrackdbl}
+\DeclareTextCommandDefault{\textlbrackdbl}
+ {\tc@check@symbol2\textlbrackdbl}
+\DeclareTextCommandDefault{\textrbrackdbl}
+ {\tc@check@symbol2\textrbrackdbl}
% \end{macrocode}
%
%
@@ -603,72 +628,118 @@
% claim they aren't in sub-encoding 2 as that's true for most
% fonts.
% \begin{macrocode}
-\DeclareTextCommandDefault{\texteightoldstyle} {\tc@check@symbol2\texteightoldstyle}
-\DeclareTextCommandDefault{\textfiveoldstyle} {\tc@check@symbol2\textfiveoldstyle}
-\DeclareTextCommandDefault{\textfouroldstyle} {\tc@check@symbol2\textfouroldstyle}
-\DeclareTextCommandDefault{\textnineoldstyle} {\tc@check@symbol2\textnineoldstyle}
-\DeclareTextCommandDefault{\textoneoldstyle} {\tc@check@symbol2\textoneoldstyle}
-\DeclareTextCommandDefault{\textsevenoldstyle} {\tc@check@symbol2\textsevenoldstyle}
-\DeclareTextCommandDefault{\textsixoldstyle} {\tc@check@symbol2\textsixoldstyle}
-\DeclareTextCommandDefault{\textthreeoldstyle} {\tc@check@symbol2\textthreeoldstyle}
-\DeclareTextCommandDefault{\texttwooldstyle} {\tc@check@symbol2\texttwooldstyle}
-\DeclareTextCommandDefault{\textzerooldstyle} {\tc@check@symbol2\textzerooldstyle}
-% \end{macrocode}
-%
-%
-%
-% The next set of glyphs is special to TeX fonts (and available
-% with a few older PS fonts supported in the virtual fonts), but
+\DeclareTextCommandDefault{\texteightoldstyle}
+ {\tc@check@symbol2\texteightoldstyle}
+\DeclareTextCommandDefault{\textfiveoldstyle}
+ {\tc@check@symbol2\textfiveoldstyle}
+\DeclareTextCommandDefault{\textfouroldstyle}
+ {\tc@check@symbol2\textfouroldstyle}
+\DeclareTextCommandDefault{\textnineoldstyle}
+ {\tc@check@symbol2\textnineoldstyle}
+\DeclareTextCommandDefault{\textoneoldstyle}
+ {\tc@check@symbol2\textoneoldstyle}
+\DeclareTextCommandDefault{\textsevenoldstyle}
+ {\tc@check@symbol2\textsevenoldstyle}
+\DeclareTextCommandDefault{\textsixoldstyle}
+ {\tc@check@symbol2\textsixoldstyle}
+\DeclareTextCommandDefault{\textthreeoldstyle}
+ {\tc@check@symbol2\textthreeoldstyle}
+\DeclareTextCommandDefault{\texttwooldstyle}
+ {\tc@check@symbol2\texttwooldstyle}
+\DeclareTextCommandDefault{\textzerooldstyle}
+ {\tc@check@symbol2\textzerooldstyle}
+% \end{macrocode}
+%
+%
+%
+% The next set of glyphs is special to \TeX{} fonts (and available
+% with a few older PS fonts supported through virtual fonts), but
% not any longer in the majority of fonts provided through
% autoinst, so we pretend there aren't available in sub-encoding 2
% and below.
% \begin{macrocode}
-\DeclareTextCommandDefault{\textacutedbl} {\tc@check@symbol2\textacutedbl}
-\DeclareTextCommandDefault{\textasciiacute} {\tc@check@symbol2\textasciiacute}
-\DeclareTextCommandDefault{\textasciibreve} {\tc@check@symbol2\textasciibreve}
-\DeclareTextCommandDefault{\textasciicaron} {\tc@check@symbol2\textasciicaron}
-\DeclareTextCommandDefault{\textasciidieresis} {\tc@check@symbol2\textasciidieresis}
-\DeclareTextCommandDefault{\textasciigrave} {\tc@check@symbol2\textasciigrave}
-\DeclareTextCommandDefault{\textasciimacron} {\tc@check@symbol2\textasciimacron}
-\DeclareTextCommandDefault{\textgravedbl} {\tc@check@symbol2\textgravedbl}
-\DeclareTextCommandDefault{\texttildelow} {\tc@check@symbol2\texttildelow}
+\DeclareTextCommandDefault{\textacutedbl}
+ {\tc@check@symbol2\textacutedbl}
+\DeclareTextCommandDefault{\textasciiacute}
+ {\tc@check@symbol2\textasciiacute}
+\DeclareTextCommandDefault{\textasciibreve}
+ {\tc@check@symbol2\textasciibreve}
+\DeclareTextCommandDefault{\textasciicaron}
+ {\tc@check@symbol2\textasciicaron}
+\DeclareTextCommandDefault{\textasciidieresis}
+ {\tc@check@symbol2\textasciidieresis}
+\DeclareTextCommandDefault{\textasciigrave}
+ {\tc@check@symbol2\textasciigrave}
+\DeclareTextCommandDefault{\textasciimacron}
+ {\tc@check@symbol2\textasciimacron}
+\DeclareTextCommandDefault{\textgravedbl}
+ {\tc@check@symbol2\textgravedbl}
+\DeclareTextCommandDefault{\texttildelow}
+ {\tc@check@symbol2\texttildelow}
% \end{macrocode}
%
%
% Finally those below are only available in CM-based fonts but in
% no font that has its origin outside of the \TeX{} world.
% \begin{macrocode}
-\DeclareTextCommandDefault{\textbaht} {\tc@check@symbol2\textbaht}
-\DeclareTextCommandDefault{\textbigcircle} {\tc@check@symbol2\textbigcircle}
-\DeclareTextCommandDefault{\textborn} {\tc@check@symbol2\textborn}
-\DeclareTextCommandDefault{\textcentoldstyle} {\tc@check@symbol2\textcentoldstyle}
-\DeclareTextCommandDefault{\textcircledP} {\tc@check@symbol2\textcircledP}
-\DeclareTextCommandDefault{\textcopyleft} {\tc@check@symbol2\textcopyleft}
-\DeclareTextCommandDefault{\textdblhyphenchar} {\tc@check@symbol2\textdblhyphenchar}
-\DeclareTextCommandDefault{\textdblhyphen} {\tc@check@symbol2\textdblhyphen}
-\DeclareTextCommandDefault{\textdied} {\tc@check@symbol2\textdied}
-\DeclareTextCommandDefault{\textdiscount} {\tc@check@symbol2\textdiscount}
-\DeclareTextCommandDefault{\textdivorced} {\tc@check@symbol2\textdivorced}
-\DeclareTextCommandDefault{\textdollaroldstyle} {\tc@check@symbol2\textdollaroldstyle}
-\DeclareTextCommandDefault{\textguarani} {\tc@check@symbol2\textguarani}
-\DeclareTextCommandDefault{\textleaf} {\tc@check@symbol2\textleaf}
-\DeclareTextCommandDefault{\textlquill} {\tc@check@symbol2\textlquill}
-\DeclareTextCommandDefault{\textmarried} {\tc@check@symbol2\textmarried}
-\DeclareTextCommandDefault{\textmho} {\tc@check@symbol2\textmho}
-\DeclareTextCommandDefault{\textmusicalnote} {\tc@check@symbol2\textmusicalnote}
-\DeclareTextCommandDefault{\textnaira} {\tc@check@symbol2\textnaira}
-\DeclareTextCommandDefault{\textopenbullet} {\tc@check@symbol2\textopenbullet}
-\DeclareTextCommandDefault{\textpeso} {\tc@check@symbol2\textpeso}
-\DeclareTextCommandDefault{\textpilcrow} {\tc@check@symbol2\textpilcrow}
-\DeclareTextCommandDefault{\textrecipe} {\tc@check@symbol2\textrecipe}
-\DeclareTextCommandDefault{\textreferencemark} {\tc@check@symbol2\textreferencemark}
-\DeclareTextCommandDefault{\textrquill} {\tc@check@symbol2\textrquill}
-\DeclareTextCommandDefault{\textservicemark} {\tc@check@symbol2\textservicemark}
-\DeclareTextCommandDefault{\textsurd} {\tc@check@symbol2\textsurd}
+\DeclareTextCommandDefault{\textbaht}
+ {\tc@check@symbol2\textbaht}
+\DeclareTextCommandDefault{\textbigcircle}
+ {\tc@check@symbol2\textbigcircle}
+\DeclareTextCommandDefault{\textborn}
+ {\tc@check@symbol2\textborn}
+\DeclareTextCommandDefault{\textcentoldstyle}
+ {\tc@check@symbol2\textcentoldstyle}
+\DeclareTextCommandDefault{\textcircledP}
+ {\tc@check@symbol2\textcircledP}
+\DeclareTextCommandDefault{\textcopyleft}
+ {\tc@check@symbol2\textcopyleft}
+\DeclareTextCommandDefault{\textdblhyphenchar}
+ {\tc@check@symbol2\textdblhyphenchar}
+\DeclareTextCommandDefault{\textdblhyphen}
+ {\tc@check@symbol2\textdblhyphen}
+\DeclareTextCommandDefault{\textdied}
+ {\tc@check@symbol2\textdied}
+\DeclareTextCommandDefault{\textdiscount}
+ {\tc@check@symbol2\textdiscount}
+\DeclareTextCommandDefault{\textdivorced}
+ {\tc@check@symbol2\textdivorced}
+\DeclareTextCommandDefault{\textdollaroldstyle}
+ {\tc@check@symbol2\textdollaroldstyle}
+\DeclareTextCommandDefault{\textguarani}
+ {\tc@check@symbol2\textguarani}
+\DeclareTextCommandDefault{\textleaf}
+ {\tc@check@symbol2\textleaf}
+\DeclareTextCommandDefault{\textlquill}
+ {\tc@check@symbol2\textlquill}
+\DeclareTextCommandDefault{\textmarried}
+ {\tc@check@symbol2\textmarried}
+\DeclareTextCommandDefault{\textmho}
+ {\tc@check@symbol2\textmho}
+\DeclareTextCommandDefault{\textmusicalnote}
+ {\tc@check@symbol2\textmusicalnote}
+\DeclareTextCommandDefault{\textnaira}
+ {\tc@check@symbol2\textnaira}
+\DeclareTextCommandDefault{\textopenbullet}
+ {\tc@check@symbol2\textopenbullet}
+\DeclareTextCommandDefault{\textpeso}
+ {\tc@check@symbol2\textpeso}
+\DeclareTextCommandDefault{\textpilcrow}
+ {\tc@check@symbol2\textpilcrow}
+\DeclareTextCommandDefault{\textrecipe}
+ {\tc@check@symbol2\textrecipe}
+\DeclareTextCommandDefault{\textreferencemark}
+ {\tc@check@symbol2\textreferencemark}
+\DeclareTextCommandDefault{\textrquill}
+ {\tc@check@symbol2\textrquill}
+\DeclareTextCommandDefault{\textservicemark}
+ {\tc@check@symbol2\textservicemark}
+\DeclareTextCommandDefault{\textsurd}
+ {\tc@check@symbol2\textsurd}
% \end{macrocode}
%
% The \cs{textpertenthousand} also belongs in this group but here
-% we have a choice: in T1 there is definition for
+% we have a choice: in T1 there is a definition for
% \cs{textpertenthousand} making the symbol up from \% and
% \verb=\char 24= (twice) but in many fonts that char doesn't exist
% and the slot is reused for random ligatures. So better not use it
@@ -679,7 +750,8 @@
% Alternatively we could just state that the symbol is unavailable in
% those fonts. For now I substitute.
% \begin{macrocode}
-\DeclareTextCommandDefault{\textpertenthousand} {\tc@check@symbol2\textpertenthousand}
+\DeclareTextCommandDefault{\textpertenthousand}
+ {\tc@check@symbol2\textpertenthousand}
\UndeclareTextCommand{\textpertenthousand}{T1}
% \end{macrocode}
%
@@ -691,8 +763,10 @@
% symbols. In the higher-numbered sub-encodings we see only a few
% dropped additionally.
% \begin{macrocode}
-\DeclareTextCommandDefault{\textlangle} {\tc@check@symbol3\textlangle}
-\DeclareTextCommandDefault{\textrangle} {\tc@check@symbol3\textrangle}
+\DeclareTextCommandDefault{\textlangle}
+ {\tc@check@symbol3\textlangle}
+\DeclareTextCommandDefault{\textrangle}
+ {\tc@check@symbol3\textrangle}
% \end{macrocode}
%
%
@@ -702,14 +776,22 @@
% \subsection{Sub-encoding \texttt{4}}
%
% \begin{macrocode}
-\DeclareTextCommandDefault{\textcolonmonetary} {\tc@check@symbol4\textcolonmonetary}
-\DeclareTextCommandDefault{\textdong} {\tc@check@symbol4\textdong}
-\DeclareTextCommandDefault{\textdownarrow} {\tc@check@symbol4\textdownarrow}
-\DeclareTextCommandDefault{\textleftarrow} {\tc@check@symbol4\textleftarrow}
-\DeclareTextCommandDefault{\textlira} {\tc@check@symbol4\textlira}
-\DeclareTextCommandDefault{\textrightarrow} {\tc@check@symbol4\textrightarrow}
-\DeclareTextCommandDefault{\textuparrow} {\tc@check@symbol4\textuparrow}
-\DeclareTextCommandDefault{\textwon} {\tc@check@symbol4\textwon}
+\DeclareTextCommandDefault{\textcolonmonetary}
+ {\tc@check@symbol4\textcolonmonetary}
+\DeclareTextCommandDefault{\textdong}
+ {\tc@check@symbol4\textdong}
+\DeclareTextCommandDefault{\textdownarrow}
+ {\tc@check@symbol4\textdownarrow}
+\DeclareTextCommandDefault{\textleftarrow}
+ {\tc@check@symbol4\textleftarrow}
+\DeclareTextCommandDefault{\textlira}
+ {\tc@check@symbol4\textlira}
+\DeclareTextCommandDefault{\textrightarrow}
+ {\tc@check@symbol4\textrightarrow}
+\DeclareTextCommandDefault{\textuparrow}
+ {\tc@check@symbol4\textuparrow}
+\DeclareTextCommandDefault{\textwon}
+ {\tc@check@symbol4\textwon}
% \end{macrocode}
%
%
@@ -727,15 +809,17 @@
%
% But the coverage is so random that it is impossible to sort them
% properly and if we tried to ensure that they only typeset those
-% glyphs that are really always available would put them all into
-% sub-encoding \texttt{9} so that's a compromise really.
+% glyphs that are really always available, we would have to put them all into
+% sub-encoding \texttt{9}; so putting them into 5 is really a compromise.
%
-% Modern fonts that don't typeset a tofu character if a glyph is
-% missing are only cataloged as sub-encoding \texttt{5} if they
-% really support of its glyph set.
+% Modern fonts usually don't typeset a tofu character if a glyph is
+% missing. They are therefore only classified as sub-encoding \texttt{5} if they
+% really support its glyph set completely.
% \begin{macrocode}
-\DeclareTextCommandDefault{\textestimated} {\tc@check@symbol5\textestimated}
-\DeclareTextCommandDefault{\textnumero} {\tc@check@symbol5\textnumero}
+\DeclareTextCommandDefault{\textestimated}
+ {\tc@check@symbol5\textestimated}
+\DeclareTextCommandDefault{\textnumero}
+ {\tc@check@symbol5\textnumero}
% \end{macrocode}
%
%
@@ -744,8 +828,10 @@
% \subsection{Sub-encoding \texttt{6}}
%
% \begin{macrocode}
-\DeclareTextCommandDefault{\textflorin} {\tc@check@symbol6\textflorin}
-\DeclareTextCommandDefault{\textcurrency} {\tc@check@symbol6\textcurrency}
+\DeclareTextCommandDefault{\textflorin}
+ {\tc@check@symbol6\textflorin}
+\DeclareTextCommandDefault{\textcurrency}
+ {\tc@check@symbol6\textcurrency}
% \end{macrocode}
%
%
@@ -753,10 +839,14 @@
% \subsection{Sub-encoding \texttt{7}}
%
% \begin{macrocode}
-\DeclareTextCommandDefault{\textfractionsolidus}{\tc@check@symbol7\textfractionsolidus}
-\DeclareTextCommandDefault{\textohm} {\tc@check@symbol7\textohm}
-\DeclareTextCommandDefault{\textmu} {\tc@check@symbol7\textmu}
-\DeclareTextCommandDefault{\textminus} {\tc@check@symbol7\textminus}
+\DeclareTextCommandDefault{\textfractionsolidus}
+ {\tc@check@symbol7\textfractionsolidus}
+\DeclareTextCommandDefault{\textohm}
+ {\tc@check@symbol7\textohm}
+\DeclareTextCommandDefault{\textmu}
+ {\tc@check@symbol7\textmu}
+\DeclareTextCommandDefault{\textminus}
+ {\tc@check@symbol7\textminus}
% \end{macrocode}
%
%
@@ -764,16 +854,19 @@
% \subsection{Sub-encoding \texttt{8}}
%
% \begin{macrocode}
-\DeclareTextCommandDefault{\textblank} {\tc@check@symbol{8}\textblank}
-\DeclareTextCommandDefault{\textinterrobangdown}{\tc@check@symbol{8}\textinterrobangdown}
-\DeclareTextCommandDefault{\textinterrobang} {\tc@check@symbol{8}\textinterrobang}
+\DeclareTextCommandDefault{\textblank}
+ {\tc@check@symbol{8}\textblank}
+\DeclareTextCommandDefault{\textinterrobangdown}
+ {\tc@check@symbol{8}\textinterrobangdown}
+\DeclareTextCommandDefault{\textinterrobang}
+ {\tc@check@symbol{8}\textinterrobang}
% \end{macrocode}
%
% Fonts with this sub-encoding don't have a Euro symbol, but
% instead of substituting we fake it.
% \begin{macrocode}
\DeclareTextCommandDefault{\texteuro}
- {\CheckEncodingSubset\UseTextSymbol{TS1}\tc@fake@euro{8}\texteuro}
+ {\CheckEncodingSubset\UseTextSymbol{TS1}\tc@fake@euro{8}\texteuro}
% \end{macrocode}
%
%
@@ -782,13 +875,20 @@
% \subsection{Sub-encoding \texttt{9} (most missing)}
%
% \begin{macrocode}
-\DeclareTextCommandDefault{\textcelsius}{\tc@check@symbol{9}\textcelsius}
-\DeclareTextCommandDefault{\textonesuperior}{\tc@check@symbol{9}\textonesuperior}
-\DeclareTextCommandDefault{\textthreequartersemdash}{\tc@check@symbol{9}\textthreequartersemdash}
-\DeclareTextCommandDefault{\textthreesuperior}{\tc@check@symbol{9}\textthreesuperior}
-\DeclareTextCommandDefault{\texttwelveudash}{\tc@check@symbol{9}\texttwelveudash}
-\DeclareTextCommandDefault{\texttwosuperior}{\tc@check@symbol{9}\texttwosuperior}
-\DeclareTextCommandDefault{\textbardbl}{\tc@check@symbol{9}\textbardbl}
+\DeclareTextCommandDefault{\textcelsius}
+ {\tc@check@symbol{9}\textcelsius}
+\DeclareTextCommandDefault{\textonesuperior}
+ {\tc@check@symbol{9}\textonesuperior}
+\DeclareTextCommandDefault{\textthreequartersemdash}
+ {\tc@check@symbol{9}\textthreequartersemdash}
+\DeclareTextCommandDefault{\textthreesuperior}
+ {\tc@check@symbol{9}\textthreesuperior}
+\DeclareTextCommandDefault{\texttwelveudash}
+ {\tc@check@symbol{9}\texttwelveudash}
+\DeclareTextCommandDefault{\texttwosuperior}
+ {\tc@check@symbol{9}\texttwosuperior}
+\DeclareTextCommandDefault{\textbardbl}
+ {\tc@check@symbol{9}\textbardbl}
% \end{macrocode}
%
%
@@ -832,18 +932,18 @@
% \end{macrocode}
% These have Unicode slots so this should be integrated into TU explicitly
% \begin{macrocode}
-\DeclareTextSymbol{\textpilcrow} \UnicodeEncodingName{"00B6}
-\DeclareTextSymbol{\textborn} \UnicodeEncodingName{"002A}
-\DeclareTextSymbol{\textdied} \UnicodeEncodingName{"2020}
-\DeclareTextSymbol{\textlbrackdbl} \UnicodeEncodingName{"27E6}
-\DeclareTextSymbol{\textrbrackdbl} \UnicodeEncodingName{"27E7}
-\DeclareTextSymbol{\textguarani} \UnicodeEncodingName{"20B2}
+\DeclareTextSymbol{\textpilcrow} \UnicodeEncodingName{"00B6}
+\DeclareTextSymbol{\textborn} \UnicodeEncodingName{"002A}
+\DeclareTextSymbol{\textdied} \UnicodeEncodingName{"2020}
+\DeclareTextSymbol{\textlbrackdbl} \UnicodeEncodingName{"27E6}
+\DeclareTextSymbol{\textrbrackdbl} \UnicodeEncodingName{"27E7}
+\DeclareTextSymbol{\textguarani} \UnicodeEncodingName{"20B2}
% \end{macrocode}
% We could make \cs{textcentoldstyle} and \cs{textdollaroldstyle}
% point to dollar and cent in the Unicode encoding
% \begin{macrocode}
-%\DeclareTextSymbol{\textcentoldstyle} \UnicodeEncodingName{"00A2}
-%\DeclareTextSymbol{\textdollaroldstyle} \UnicodeEncodingName{"0024}
+%\DeclareTextSymbol{\textcentoldstyle} \UnicodeEncodingName{"00A2}
+%\DeclareTextSymbol{\textdollaroldstyle}\UnicodeEncodingName{"0024}
% \end{macrocode}
% but I think it is better to pick them up from TS1 even if that
% usually means LMR fonts
@@ -908,7 +1008,8 @@
\DeclareEncodingSubset{TS1}{lmss} {1}
\DeclareEncodingSubset{TS1}{lmssq} {1}
\DeclareEncodingSubset{TS1}{lmvtt} {1}
-\DeclareEncodingSubset{TS1}{lmtt} {1} % missing TM, SM, pertenthousand for some reason
+\DeclareEncodingSubset{TS1}{lmtt} {1} % missing TM, SM and
+ % pertenthousand for some reason
% \end{macrocode}
%
% \begin{macrocode}
@@ -918,33 +1019,33 @@
% \end{macrocode}
%
% \begin{macrocode}
-\DeclareEncodingSubset{TS1}{bch} {5} % tofu for blank, ohm
-\DeclareEncodingSubset{TS1}{futj} {5} % tofu for blank, interrobang/down, ohm
-\DeclareEncodingSubset{TS1}{futs} {5} % tofu for blank, ohm
-\DeclareEncodingSubset{TS1}{futx} {5} % probably (currently broken distrib)
-\DeclareEncodingSubset{TS1}{pag} {5} % tofu for blank, interrobang/down, ohm
-\DeclareEncodingSubset{TS1}{pbk} {5} % tofu for blank, interrobang/down, ohm
-\DeclareEncodingSubset{TS1}{pcr} {5} % tofu for blank, interrobang/down, ohm
-\DeclareEncodingSubset{TS1}{phv} {5} % tofu for blank, interrobang/down, ohm
-\DeclareEncodingSubset{TS1}{pnc} {5} % tofu for blank, interrobang/down, ohm
-\DeclareEncodingSubset{TS1}{pplj} {5} % tofu for blank
-\DeclareEncodingSubset{TS1}{pplx} {5} % tofu for blank
-\DeclareEncodingSubset{TS1}{ppl} {5} % tofu for blank interrobang/down
-\DeclareEncodingSubset{TS1}{ptm} {5} % tofu for blank, interrobang/down, ohm
-\DeclareEncodingSubset{TS1}{pzc} {5} % tofu for blank, interrobang/down, ohm
-\DeclareEncodingSubset{TS1}{ul9} {5} % tofu for blank, interrobang/down, ohm
+\DeclareEncodingSubset{TS1}{bch} {5} % tofu for blank, ohm
+\DeclareEncodingSubset{TS1}{futj}{5} % tofu for blank, interrobang/down, ohm
+\DeclareEncodingSubset{TS1}{futs}{5} % tofu for blank, ohm
+\DeclareEncodingSubset{TS1}{futx}{5} % probably (currently broken distrib)
+\DeclareEncodingSubset{TS1}{pag} {5} % tofu for blank, interrobang/down, ohm
+\DeclareEncodingSubset{TS1}{pbk} {5} % tofu for blank, interrobang/down, ohm
+\DeclareEncodingSubset{TS1}{pcr} {5} % tofu for blank, interrobang/down, ohm
+\DeclareEncodingSubset{TS1}{phv} {5} % tofu for blank, interrobang/down, ohm
+\DeclareEncodingSubset{TS1}{pnc} {5} % tofu for blank, interrobang/down, ohm
+\DeclareEncodingSubset{TS1}{pplj}{5} % tofu for blank
+\DeclareEncodingSubset{TS1}{pplx}{5} % tofu for blank
+\DeclareEncodingSubset{TS1}{ppl} {5} % tofu for blank interrobang/down
+\DeclareEncodingSubset{TS1}{ptm} {5} % tofu for blank, interrobang/down, ohm
+\DeclareEncodingSubset{TS1}{pzc} {5} % tofu for blank, interrobang/down, ohm
+\DeclareEncodingSubset{TS1}{ul9} {5} % tofu for blank, interrobang/down, ohm
% \end{macrocode}
%
% \begin{macrocode}
-\DeclareEncodingSubset{TS1}{dayroms} {6} % tofu for blank, interrobang/down, ohm
-\DeclareEncodingSubset{TS1}{dayrom} {6} % tofu for blank, interrobang/down, ohm
+\DeclareEncodingSubset{TS1}{dayroms}{6} % tofu for blank, interrobang/down, ohm
+\DeclareEncodingSubset{TS1}{dayrom} {6} % tofu for blank, interrobang/down, ohm
% \end{macrocode}
%
% \begin{macrocode}
-\DeclareEncodingSubset{TS1}{augie} {8} % really only missing euro
-\DeclareEncodingSubset{TS1}{put} {8}
-\DeclareEncodingSubset{TS1}{uag} {8} % probably (currently broken distrib)
-\DeclareEncodingSubset{TS1}{ugq} {8}
+\DeclareEncodingSubset{TS1}{augie}{8} % really only missing euro
+\DeclareEncodingSubset{TS1}{put} {8}
+\DeclareEncodingSubset{TS1}{uag} {8} % probably (currently broken distrib)
+\DeclareEncodingSubset{TS1}{ugq} {8}
% \end{macrocode}
%
% \begin{macrocode}
@@ -976,14 +1077,14 @@
% substituted.
%
% \begin{macrocode}
-\DeclareEncodingSubset{TS1}{lato-*} {0} % with a bunch of tofu inside
-\DeclareEncodingSubset{TS1}{opensans-*} {0} % with a bunch of tofu inside
-\DeclareEncodingSubset{TS1}{cantarell-*} {0} % with a bunch of tofu inside
-\DeclareEncodingSubset{TS1}{fbb-*} {0} % missing centoldstyle
+\DeclareEncodingSubset{TS1}{lato-*} {0} % with a bunch of tofu inside
+\DeclareEncodingSubset{TS1}{opensans-*} {0} % with a bunch of tofu inside
+\DeclareEncodingSubset{TS1}{cantarell-*} {0} % with a bunch of tofu inside
+\DeclareEncodingSubset{TS1}{fbb-*} {0} % missing centoldstyle
% \end{macrocode}
%
% \begin{macrocode}
-\DeclareEncodingSubset{TS1}{tli} {1} % with lots of tofu inside
+\DeclareEncodingSubset{TS1}{tli} {1} % with lots of tofu inside
% \end{macrocode}
%
% \begin{macrocode}
@@ -1109,7 +1210,7 @@
\DeclareEncodingSubset{TS1}{erewhon-*} {7}
\DeclareEncodingSubset{TS1}{ComicNeue-TLF} {7}
\DeclareEncodingSubset{TS1}{ComicNeueAngular-TLF} {7}
-\DeclareEncodingSubset{TS1}{Forum-LF} {7} % the superiors are missing
+\DeclareEncodingSubset{TS1}{Forum-LF} {7} % the superiors are missing
% \end{macrocode}
%
% \begin{macrocode}
@@ -1237,26 +1338,32 @@
%<latexrelease>\let\textbrokenbar\@undefined
%<latexrelease>\let\textcelsius\@undefined
%<latexrelease>\let\textcent\@undefined
-%<latexrelease>\DeclareTextCommandDefault{\textcopyright}{\textcircled{c}}
+%<latexrelease>\DeclareTextCommandDefault{\textcopyright}
+%<latexrelease> {\textcircled{c}}
%<latexrelease>\let\textdegree\@undefined
%<latexrelease>\let\textdiv\@undefined
%<latexrelease>\let\textlnot\@undefined
%<latexrelease>\let\textonehalf\@undefined
%<latexrelease>\let\textonequarter\@undefined
%<latexrelease>\let\textonesuperior\@undefined
-%<latexrelease>\DeclareTextCommandDefault{\textordfeminine}{\textsuperscript{a}}
-%<latexrelease>\DeclareTextCommandDefault{\textordmasculine}{\textsuperscript{o}}
+%<latexrelease>\DeclareTextCommandDefault{\textordfeminine}
+%<latexrelease> {\textsuperscript{a}}
+%<latexrelease>\DeclareTextCommandDefault{\textordmasculine}
+%<latexrelease> {\textsuperscript{o}}
%<latexrelease>\let\textpm\@undefined
%<latexrelease>\let\textquotesingle\@undefined
%<latexrelease>\let\textquotestraightbase\@undefined
%<latexrelease>\let\textquotestraightdblbase\@undefined
-%<latexrelease>\DeclareTextCommandDefault{\textregistered}{\textcircled{%
-%<latexrelease> \check@mathfonts\fontsize\sf@size\z@\math@fontsfalse\selectfont R}}
+%<latexrelease>\DeclareTextCommandDefault{\textregistered}
+%<latexrelease> {\textcircled{%
+%<latexrelease> \check@mathfonts\fontsize\sf@size\z@
+%<latexrelease> \math@fontsfalse\selectfont R}}
%<latexrelease>\let\textthreequartersemdash\@undefined
%<latexrelease>\let\textthreequarters\@undefined
%<latexrelease>\let\textthreesuperior\@undefined
%<latexrelease>\let\texttimes\@undefined
-%<latexrelease>\DeclareTextCommandDefault{\texttrademark}{\textsuperscript{TM}}
+%<latexrelease>\DeclareTextCommandDefault{\texttrademark}
+%<latexrelease> {\textsuperscript{TM}}
%<latexrelease>\let\texttwelveudash\@undefined
%<latexrelease>\let\texttwosuperior\@undefined
%<latexrelease>\let\textyen\@undefined
@@ -1433,9 +1540,12 @@
% kernel is info only). Using the package options you can change this behavior.
% \changes{v2.0n}{2020/02/05}{Changed the package default to info (gh/262)}
% \begin{macrocode}
-\DeclareOption{error}{\gdef\tc@errorwarn{\PackageError{textcomp}}}
-\DeclareOption{warn}{\gdef\tc@errorwarn#1#2{\PackageWarning{textcomp}{#1}}}
-\DeclareOption{info}{\gdef\tc@errorwarn#1#2{\PackageInfo{textcomp}{#1}}}
+\DeclareOption{error}
+ {\gdef\tc@errorwarn{\PackageError{textcomp}}}
+\DeclareOption{warn}
+ {\gdef\tc@errorwarn#1#2{\PackageWarning{textcomp}{#1}}}
+\DeclareOption{info}
+ {\gdef\tc@errorwarn#1#2{\PackageInfo{textcomp}{#1}}}
\DeclareOption{quiet}{\gdef\tc@errorwarn#1#2{}}
% \end{macrocode}
%
@@ -1773,7 +1883,7 @@
% to ensure that |\textcurrency| is only typeset if the current
% font has a \texttt{TS1} subset id of less than 3. Otherwise
% |\tc@error| is called telling the user that for this font family
-% |\textcurreny| is not available.
+% |\textcurrency| is not available.
% \begin{macrocode}
\def\tc@check@symbol{\CheckEncodingSubset\UseTextSymbol{TS1}\tc@subst}
\def\tc@check@accent{\CheckEncodingSubset\UseTextAccent{TS1}\tc@error}
@@ -2008,7 +2118,7 @@
%
% Finally input the encoding-specific definitions for
% \texttt{TS1} thus making the top-level definitions
-% optimised for this encoding (and not for the default
+% optimized for this encoding (and not for the default
% encoding).
% \changes{v1.9o}{1998/03/20}{Load decls after defaults for speed.}
% \begin{macrocode}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltthm.dtx b/Master/texmf-dist/source/latex-dev/base/ltthm.dtx
index c33ea4202fd..00fe97c77af 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltthm.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltthm.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltvers.dtx b/Master/texmf-dist/source/latex-dev/base/ltvers.dtx
index df57faf23b4..26eaee98901 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltvers.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltvers.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -33,7 +33,7 @@
%<*driver>
% \fi
\ProvidesFile{ltvers.dtx}
- [2020/12/05 v1.1e LaTeX Kernel (Version Info)]
+ [2021/01/15 v1.1e LaTeX Kernel (Version Info)]
% \iffalse
\documentclass{ltxdoc}
\GetFileInfo{ltvers.dtx}
@@ -115,7 +115,7 @@
{2021-05-01}
%</2ekernel|latexrelease>
%<*2ekernel>
-\def\patch@level{-1}
+\def\patch@level{-2}
% \end{macrocode}
%
% \begin{macro}{\development@branch@name}
@@ -181,28 +181,30 @@
% \begin{macrocode}
\ifnum0\ifnum\patch@level=0 \ifx\development@branch@name\@empty 1\fi\fi>0 %
\everyjob\expandafter{\the\everyjob
- \typeout{\fmtname \space<\fmtversion>}}
+ \typeout{\fmtname\space <\fmtversion>}}
\immediate
\write16{\fmtname \space<\fmtversion>}
\else\ifnum\patch@level>0
\everyjob\expandafter{\the\everyjob
- \typeout{\fmtname \space<\fmtversion> patch level \patch@level}}
+ \typeout{\fmtname\space <\fmtversion> patch level \patch@level}}
\immediate
- \write16{\fmtname \space<\fmtversion> patch level \patch@level}
+ \write16{\fmtname\space <\fmtversion> patch level \patch@level}
\else
\everyjob\expandafter{\the\everyjob
- \typeout{\fmtname \space<\fmtversion> pre-release-\number-\patch@level\space
- \ifx\development@branch@name\@undefined \else
- \ifx\development@branch@name\@empty \else
- \space (\development@branch@name\space branch)%
+ \typeout{\fmtname\space <\fmtversion>
+ pre-release-\number-\patch@level\space
+ \ifx\development@branch@name\@undefined \else
+ \ifx\development@branch@name\@empty \else
+ \space (\development@branch@name\space branch)%
\fi
\fi
}}
\immediate
- \write16{\fmtname \space<\fmtversion> pre-release-\number-\patch@level\space
- \ifx\development@branch@name\@undefined \else
- \ifx\development@branch@name\@empty \else
- \space (\development@branch@name\space branch)%
+ \write16{\fmtname\space <\fmtversion>
+ pre-release-\number-\patch@level\space
+ \ifx\development@branch@name\@undefined \else
+ \ifx\development@branch@name\@empty \else
+ \space (\development@branch@name\space branch)%
\fi
\fi
}
diff --git a/Master/texmf-dist/source/latex-dev/base/ltxdoc.dtx b/Master/texmf-dist/source/latex-dev/base/ltxdoc.dtx
index e00f9bcb9f9..7a21f7d871f 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltxdoc.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltxdoc.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/ltxref.dtx b/Master/texmf-dist/source/latex-dev/base/ltxref.dtx
index 4e78deec4ad..dd482299b28 100644
--- a/Master/texmf-dist/source/latex-dev/base/ltxref.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/ltxref.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/makeindx.dtx b/Master/texmf-dist/source/latex-dev/base/makeindx.dtx
index c4a76ffabef..e8e48e60b06 100644
--- a/Master/texmf-dist/source/latex-dev/base/makeindx.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/makeindx.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -28,7 +28,7 @@
% \fi
%\iffalse
% Copyright (C) 1985 by Leslie Lamport
-% Copyright (C) 1994-98 by \LaTeX3 Project and Johannes Braams
+% Copyright (C) 1994-98 by LaTeX Project and Johannes Braams
%\fi
%
% \changes{1.0b}{1994/01/21}{added a missing \cs{end\{macro\}}, a
diff --git a/Master/texmf-dist/source/latex-dev/base/makeindx.ins b/Master/texmf-dist/source/latex-dev/base/makeindx.ins
index 771e3b12c6e..427d4c79674 100644
--- a/Master/texmf-dist/source/latex-dev/base/makeindx.ins
+++ b/Master/texmf-dist/source/latex-dev/base/makeindx.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/newdc.ins b/Master/texmf-dist/source/latex-dev/base/newdc.ins
index 0ea49996610..e2ce183f05e 100644
--- a/Master/texmf-dist/source/latex-dev/base/newdc.ins
+++ b/Master/texmf-dist/source/latex-dev/base/newdc.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/newlfont.dtx b/Master/texmf-dist/source/latex-dev/base/newlfont.dtx
index 085d2348ba8..3b6e001075b 100644
--- a/Master/texmf-dist/source/latex-dev/base/newlfont.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/newlfont.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/nfssfont.dtx b/Master/texmf-dist/source/latex-dev/base/nfssfont.dtx
index 09d91dc51d5..554c7ae8f07 100644
--- a/Master/texmf-dist/source/latex-dev/base/nfssfont.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/nfssfont.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/nfssfont.ins b/Master/texmf-dist/source/latex-dev/base/nfssfont.ins
index 24a2e115e07..7d1b9cc41ae 100644
--- a/Master/texmf-dist/source/latex-dev/base/nfssfont.ins
+++ b/Master/texmf-dist/source/latex-dev/base/nfssfont.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/olddc.ins b/Master/texmf-dist/source/latex-dev/base/olddc.ins
index 7401e29f6d6..d878507d8e3 100644
--- a/Master/texmf-dist/source/latex-dev/base/olddc.ins
+++ b/Master/texmf-dist/source/latex-dev/base/olddc.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/oldlfont.dtx b/Master/texmf-dist/source/latex-dev/base/oldlfont.dtx
index 56204af7ae4..d04ddb6323b 100644
--- a/Master/texmf-dist/source/latex-dev/base/oldlfont.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/oldlfont.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/preload.dtx b/Master/texmf-dist/source/latex-dev/base/preload.dtx
index 22554b429fd..b2ca24bce5b 100644
--- a/Master/texmf-dist/source/latex-dev/base/preload.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/preload.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/proc.dtx b/Master/texmf-dist/source/latex-dev/base/proc.dtx
index 814006e411b..7a1329fb82c 100644
--- a/Master/texmf-dist/source/latex-dev/base/proc.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/proc.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -28,8 +28,8 @@
% \fi
%
% \iffalse
-% Copyright (C) 1991,1992 by Leslie Lamport \and
-% Copyright (C) 1994-2020 by the \LaTeX3 project \and Johannes Braams
+% Copyright (C) 1991,1992 by Leslie Lamport and
+% Copyright (C) 1994-2020 by the LaTeX Project and Johannes Braams
%
% \changes{v1.1}{1994/01/25}{Made `proc' a document class and provide
% a .sty file for compatibility mode}
diff --git a/Master/texmf-dist/source/latex-dev/base/proc.ins b/Master/texmf-dist/source/latex-dev/base/proc.ins
index b9c3cbe0645..cfed5bd6a39 100644
--- a/Master/texmf-dist/source/latex-dev/base/proc.ins
+++ b/Master/texmf-dist/source/latex-dev/base/proc.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/slides.dtx b/Master/texmf-dist/source/latex-dev/base/slides.dtx
index 9c83a3d851a..883e7d34f04 100644
--- a/Master/texmf-dist/source/latex-dev/base/slides.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/slides.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -28,7 +28,7 @@
% \fi
%
% \iffalse
-% Copyright (C) 1994-97 LaTeX3 project, Frank Mittelbach
+% Copyright (C) 1994-97 LaTeX Project, Frank Mittelbach
% and Rainer Sch\"opf, all rights reserved.
%
% \begin{macrocode}
diff --git a/Master/texmf-dist/source/latex-dev/base/slides.ins b/Master/texmf-dist/source/latex-dev/base/slides.ins
index 1213d4f4d90..43ec2bebdf8 100644
--- a/Master/texmf-dist/source/latex-dev/base/slides.ins
+++ b/Master/texmf-dist/source/latex-dev/base/slides.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
@@ -97,7 +97,7 @@ extension .ins) which are part of the distribution.
This is a generated file.
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
@@ -139,7 +139,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/slifonts.fdd b/Master/texmf-dist/source/latex-dev/base/slifonts.fdd
index d3951cfa574..ec8b802596f 100644
--- a/Master/texmf-dist/source/latex-dev/base/slifonts.fdd
+++ b/Master/texmf-dist/source/latex-dev/base/slifonts.fdd
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright 1993-2019
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -30,7 +30,7 @@
%\iffalse This is a META comment
%
% File `slifonts.fdd'.
-% Copyright (C) 1989-1998 LaTeX3 project, Frank Mittelbach and
+% Copyright (C) 1989-1998 LaTeX Project, Frank Mittelbach and
% Rainer Sch\"opf, all rights reserved.
%
%<lcmss&!ec>\ProvidesFile{ot1lcmss.fd}
diff --git a/Master/texmf-dist/source/latex-dev/base/syntonly.dtx b/Master/texmf-dist/source/latex-dev/base/syntonly.dtx
index 55b2ad3cec6..b214c49ae4a 100644
--- a/Master/texmf-dist/source/latex-dev/base/syntonly.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/syntonly.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/syntonly.ins b/Master/texmf-dist/source/latex-dev/base/syntonly.ins
index 3717d1e6fe8..6b4113ed115 100644
--- a/Master/texmf-dist/source/latex-dev/base/syntonly.ins
+++ b/Master/texmf-dist/source/latex-dev/base/syntonly.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 1993-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/tulm.fdd b/Master/texmf-dist/source/latex-dev/base/tulm.fdd
index 9308d801ff2..5c1566a5bad 100644
--- a/Master/texmf-dist/source/latex-dev/base/tulm.fdd
+++ b/Master/texmf-dist/source/latex-dev/base/tulm.fdd
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright 2016-2019
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -30,7 +30,7 @@
%\iffalse This is a META comment
%
% File `cmfonts.fdd'.
-% Copyright (C) 2016-2019 LaTeX3 Project
+% Copyright (C) 2016-2019 LaTeX Project
%
%
%<TUlmr>\ProvidesFile{tulmr.fd}
@@ -51,7 +51,7 @@
\title{The file \texttt{tulm.fdd} for use with
\LaTeXe.\thanks{This file has version
number \fileversion, dated \filedate.}}
-\date{\filedate}\author{LaTeX3 Project}
+\date{\filedate}\author{\LaTeX\ Project}
\addtolength\textwidth{30pt}
\begin{document}
\MaintainedByLaTeXTeam{latex}
diff --git a/Master/texmf-dist/source/latex-dev/base/tulm.ins b/Master/texmf-dist/source/latex-dev/base/tulm.ins
index 1c4e45e8c42..98962f2b207 100644
--- a/Master/texmf-dist/source/latex-dev/base/tulm.ins
+++ b/Master/texmf-dist/source/latex-dev/base/tulm.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 2016-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
@@ -49,7 +49,7 @@ reports for it can be opened at https://latex-project.org/bugs.html
Copyright (C) 2016-2021
-The LaTeX3 Project and any individual authors listed elsewhere
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/unpack.ins b/Master/texmf-dist/source/latex-dev/base/unpack.ins
index 9df3403f5b3..6332fcb5c00 100644
--- a/Master/texmf-dist/source/latex-dev/base/unpack.ins
+++ b/Master/texmf-dist/source/latex-dev/base/unpack.ins
@@ -4,7 +4,7 @@
%% LaTeX or TeX.
%%
%% Copyright (C) 1993-2021
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the LaTeX base system.
diff --git a/Master/texmf-dist/source/latex-dev/base/utf8ienc.dtx b/Master/texmf-dist/source/latex-dev/base/utf8ienc.dtx
index cd11cb0f2ae..79c725915c7 100644
--- a/Master/texmf-dist/source/latex-dev/base/utf8ienc.dtx
+++ b/Master/texmf-dist/source/latex-dev/base/utf8ienc.dtx
@@ -1,7 +1,7 @@
% \iffalse meta-comment
%
% Copyright (C) 1993-2021
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the LaTeX base system.
@@ -216,7 +216,7 @@
%<+ts1> \ProvidesFile{ts1enc.dfu}
%<+x2> \ProvidesFile{x2enc.dfu}
%<+all> \ProvidesFile{utf8enc.dfu}
-%<-utf8-2018> [2020/11/26 v1.2k UTF-8 support for inputenc]
+%<-utf8-2018> [2021/01/27 v1.2l UTF-8 support for inputenc]
% \end{macrocode}
%
% \begin{macrocode}
@@ -1137,7 +1137,7 @@
% \changes{v1.1q}{2015/12/02}{Add remaining latin uses of accents in T1}
% \changes{v1.1r}{2015/12/03}{Add some more ogonek cases}
% \changes{v1.1s}{2016/01/11}{Add some more caron and acute}
-% \changes{v1.1t}{2017/01/28}{Add caron cominations for GgYy}
+% \changes{v1.1t}{2017/01/28}{Add caron combinations for GgYy}
% \begin{macrocode}
%<all,t1,ot1,ly1>\DeclareUnicodeCharacter{00A0}{\nobreakspace}
%<all,t1,ot1,ly1>\DeclareUnicodeCharacter{00A1}{\textexclamdown}
@@ -1701,6 +1701,18 @@
%<all,ts1>\DeclareUnicodeCharacter{0E3F}{\textbaht}
%<all,t1>\DeclareUnicodeCharacter{1E02}{\.B}
%<all,t1>\DeclareUnicodeCharacter{1E03}{\.b}
+% \end{macrocode}
+% \changes{v1.2k}{2021/01/27}{Added various additional dot accents (gh/484)}
+% \begin{macrocode}
+%<all,t1>\DeclareUnicodeCharacter{1E0D}{\d d}
+%<all,t1>\DeclareUnicodeCharacter{1E25}{\d h}
+%<all,t1>\DeclareUnicodeCharacter{1E37}{\d l}
+%<all,t1>\DeclareUnicodeCharacter{1E43}{\d m}
+%<all,t1>\DeclareUnicodeCharacter{1E45}{\.n}
+%<all,t1>\DeclareUnicodeCharacter{1E47}{\d n}
+%<all,t1>\DeclareUnicodeCharacter{1E5B}{\d r}
+%<all,t1>\DeclareUnicodeCharacter{1E63}{\d s}
+%<all,t1>\DeclareUnicodeCharacter{1E6D}{\d t}
%<all,t1>\DeclareUnicodeCharacter{1E9E}{\SS}
%<all,x2,t2c,t2b,t2a,t1,utf8>\DeclareUnicodeCharacter{200C}{\textcompwordmark}
% \end{macrocode}
diff --git a/Master/texmf-dist/source/latex-dev/tools/afterpage.dtx b/Master/texmf-dist/source/latex-dev/tools/afterpage.dtx
index 600d221cb63..e5fa69f5152 100644
--- a/Master/texmf-dist/source/latex-dev/tools/afterpage.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/afterpage.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/afterpage.ins b/Master/texmf-dist/source/latex-dev/tools/afterpage.ins
index 96cba1ed0ca..0cfc531f193 100644
--- a/Master/texmf-dist/source/latex-dev/tools/afterpage.ins
+++ b/Master/texmf-dist/source/latex-dev/tools/afterpage.ins
@@ -3,8 +3,8 @@
%% driver files from the doc files in this package when run through
%% LaTeX or TeX.
%%
-%% Copyright (C) 1993-2020
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% Copyright (C) 1993-2021
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -45,8 +45,8 @@ The source is maintained by the LaTeX Project team and bug
reports for it can be opened at https://latex-project.org/bugs/
(but please observe conditions on bug reports sent to that address!)
-Copyright (C) 1993-2020
-The LaTeX3 Project and any individual authors listed elsewhere
+Copyright (C) 1993-2021
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/array.dtx b/Master/texmf-dist/source/latex-dev/tools/array.dtx
index ff963d7f514..1ca08036d95 100644
--- a/Master/texmf-dist/source/latex-dev/tools/array.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/array.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -33,7 +33,7 @@
%<+package>\DeclareCurrentRelease{}{2020-10-01}
%<+package>
%<+package>\ProvidesPackage{array}
-%<+package> [2020/10/01 v2.5c Tabular extension package (FMi)]
+%<+package> [2021/02/10 v2.5d Tabular extension package (FMi)]
%
% \fi
%
@@ -188,7 +188,7 @@
% David Carlisle\thanks{David kindly agreed on the inclusion
% of the \texttt{\textbackslash{}newcolumntype} implementation,
% formerly in
-% \texttt{newarray.sty} into this package }}
+% \texttt{newarray.sty} into this package.}}
%
% \date{Printed \today}
%
@@ -361,6 +361,56 @@
% columns have predefined widths.
% \end{itemize}
%
+%
+% \subsection{The behavior of the \texttt{\string\\} command}
+%
+% In the basic \texttt{tabular} implementation of \LaTeX{} the \cs{\bslash}
+% command ending the rows of the \texttt{tabular} or \texttt{array} has
+% a somewhat inconsistent behavior if its optional argument is used. The
+% result then depends on the type of rightmost column and as remarked in
+% Leslie Lamport's \LaTeX{} manual~\cite{bk:lamport} may not always produce the
+% expected extra space.
+%
+%
+% Without the \textsf{array} package the extra space requested by the
+% optional argument of \cs{\bslash} is measured from the last baseline of
+% the rightmost column (indicated by ``x'' in the following
+% example). As a result, swapping the column will give different
+% results:
+% \begin{verbatim}
+% \begin{tabular}[t]{lp{1cm}}
+% 1 & 1\newline x \\[20pt] 2 & 2 \end{tabular}
+% \begin{tabular}[t]{p{1cm}l}
+% 1\newline 1 & x \\[20pt] 2 & 2 \end{tabular}
+% \end{verbatim}
+% \pagebreak
+% If you run this without the \textsf{array} package you will get the
+% following result:
+% \begin{center}
+% \begin{tabular}[t]{lp{1cm}}
+% 1 & 1\newline x \\[32pt] 2 & 2 \end{tabular}
+% \begin{tabular}[t]{p{1cm}l}
+% 1\newline 1 & x \\[20pt] 2 & 2 \end{tabular}
+% \end{center}
+% In contrast, when the \textsf{array} package is loaded, the requested
+% space in the optional argument is always measured from the baseline of
+% the whole row and not from the last baseline of the rightmost column, thus
+% swapping columns doesn't change the spacing and we same table height
+% with an effective 8pt of extra space (as the second line already takes
+% up 12pt of the requested 20pt):
+% \begin{center}
+% \begin{tabular}[t]{lp{1cm}}
+% 1 & 1\newline x \\[20pt] 2 & 2 \end{tabular}
+% \begin{tabular}[t]{p{1cm}l}
+% 1\newline 1 & x \\[20pt] 2 & 2 \end{tabular}
+% \end{center}
+%
+% This correction of behavior only makes a difference if the rightmost column
+% is a \texttt{p}-column. Thus if you add the \textsf{array}
+% package to an existing document, you should verify the spacing in all
+% tables that have this kind of structure.
+%
+%
% \subsection{Defining new column specifiers}
%
% \DeleteShortVerb{\=}
@@ -1958,8 +2008,9 @@
% \changes{v2.2d}{1994/05/16}{Use \LaTeXe \cs{@finalstrut}}
% \changes{v2.3g}{1996/05/07}{Add \cs{hfil} for tools/2120}
% \changes{v2.4i}{2018/09/13}{Add group to prevent color leak (gh/72)}
+% \changes{v2.5d}{2021/02/10}{Explicitly run \cs{par} at the end of pboxes}
% \begin{macrocode}
-\def\@endpbox{\@finalstrut\@arstrutbox \color@endgroup \egroup\hfil}
+\def\@endpbox{\@finalstrut\@arstrutbox \par \color@endgroup \egroup\hfil}
% \end{macrocode}
% \end{macro}
%
diff --git a/Master/texmf-dist/source/latex-dev/tools/bm.dtx b/Master/texmf-dist/source/latex-dev/tools/bm.dtx
index 096f6c4bc2a..80c73f57189 100644
--- a/Master/texmf-dist/source/latex-dev/tools/bm.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/bm.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/bm.ins b/Master/texmf-dist/source/latex-dev/tools/bm.ins
index e963d1d88e2..c00a3e5cca4 100644
--- a/Master/texmf-dist/source/latex-dev/tools/bm.ins
+++ b/Master/texmf-dist/source/latex-dev/tools/bm.ins
@@ -3,8 +3,8 @@
%% driver files from the doc files in this package when run through
%% LaTeX or TeX.
%%
-%% Copyright (C) 1993-2020
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% Copyright (C) 1993-2021
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -45,8 +45,8 @@ The source is maintained by the LaTeX Project team and bug
reports for it can be opened at https://latex-project.org/bugs/
(but please observe conditions on bug reports sent to that address!)
-Copyright (C) 1993-2020
-The LaTeX3 Project and any individual authors listed elsewhere
+Copyright (C) 1993-2021
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/calc.dtx b/Master/texmf-dist/source/latex-dev/tools/calc.dtx
index 62fe27489b2..78b6167fe6f 100644
--- a/Master/texmf-dist/source/latex-dev/tools/calc.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/calc.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -25,7 +25,7 @@
%% Copyright (C) 1992--1995
%% Kresten Krab Thorup and Frank Jensen.
%% Copyright (C) 1997--2007
-%% Kresten Krab Thorup, Frank Jensen and the LaTeX3 Project.
+%% Kresten Krab Thorup, Frank Jensen and the LaTeX Project.
%%
%% The original authors (fj@hugin.dk and krab@daimi.aau.dk) have
%% contributed this package to the LaTeX distribution.
diff --git a/Master/texmf-dist/source/latex-dev/tools/dcolumn.dtx b/Master/texmf-dist/source/latex-dev/tools/dcolumn.dtx
index 1899cce5560..069e633221d 100644
--- a/Master/texmf-dist/source/latex-dev/tools/dcolumn.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/dcolumn.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/delarray.dtx b/Master/texmf-dist/source/latex-dev/tools/delarray.dtx
index 17cac2052cb..cc503707b0d 100644
--- a/Master/texmf-dist/source/latex-dev/tools/delarray.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/delarray.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/enumerate.dtx b/Master/texmf-dist/source/latex-dev/tools/enumerate.dtx
index 3ce463e6015..150a7386b83 100644
--- a/Master/texmf-dist/source/latex-dev/tools/enumerate.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/enumerate.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/fileerr.dtx b/Master/texmf-dist/source/latex-dev/tools/fileerr.dtx
index 16a95e28203..d9163041161 100644
--- a/Master/texmf-dist/source/latex-dev/tools/fileerr.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/fileerr.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/fontsmpl.dtx b/Master/texmf-dist/source/latex-dev/tools/fontsmpl.dtx
index a5fb2964a98..b7208267736 100644
--- a/Master/texmf-dist/source/latex-dev/tools/fontsmpl.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/fontsmpl.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/ftnright.dtx b/Master/texmf-dist/source/latex-dev/tools/ftnright.dtx
index e5fffdfcd92..e8da56aa204 100644
--- a/Master/texmf-dist/source/latex-dev/tools/ftnright.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/ftnright.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -314,7 +314,7 @@
% \newblock Addison-Wesley, Reading, Massachusetts, 1986.
%
% \bibitem{src:ltxiii94}
-% \LaTeX3 project.
+% \LaTeX\ Project.
% \newblock \LaTeXe distribution, 1994.
% \newblock Sources for {\LaTeXe} the successor to \LaTeX~2.09.
%
diff --git a/Master/texmf-dist/source/latex-dev/tools/hhline.dtx b/Master/texmf-dist/source/latex-dev/tools/hhline.dtx
index b9234b5aa25..98d68024515 100644
--- a/Master/texmf-dist/source/latex-dev/tools/hhline.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/hhline.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/indentfirst.dtx b/Master/texmf-dist/source/latex-dev/tools/indentfirst.dtx
index 7123be04c54..e54df284ae1 100644
--- a/Master/texmf-dist/source/latex-dev/tools/indentfirst.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/indentfirst.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/layout.dtx b/Master/texmf-dist/source/latex-dev/tools/layout.dtx
index 8918ffdca48..6962674255b 100644
--- a/Master/texmf-dist/source/latex-dev/tools/layout.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/layout.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -30,7 +30,7 @@
%<+package>\ProvidesPackage{layout}
%<+driver>\ProvidesFile{layout.drv}
%\ProvidesFile{layout.dtx}
- [2014/10/28 v1.2c Show layout parameters]
+ [2020-07-25 v1.2d Show layout parameters]
%
% A short driver is provided that can be extracted if necessary by
% the \textsf{DocStrip} program provided with \LaTeXe.
@@ -54,6 +54,17 @@
% \changes{v1.1d}{1994/09/08}{Stored texts in control sequences to
% allow other languages}
%
+% \makeatletter
+% \def\allowtofu{^^A
+%\def\UTFviii@undefined@err##1{^^A
+% \PackageWarning{inputenc}{Unicode character \expandafter
+% \UTFviii@splitcsname\string##1\relax
+% \MessageBreak
+% not set up for use with LaTeX}^^A
+% \raisebox{.8pt}{\fboxsep1pt\kern.1pt\fbox{$\cdot$}\kern.1pt}^^A
+% }}
+% \makeatother
+%
% \GetFileInfo{layout.dtx}
% \title{Displaying page layout variables}
% \author{Kent McPherson a.o.\thanks{Converted for \LaTeXe\ by
@@ -172,6 +183,20 @@
\def\notshown{non mostrato}
}
% \end{macrocode}
+%
+% \changes{v1.2d}{2020-07-25}{Added option for Japanese (gh353)}
+% \begin{allowtofu}
+% \begin{macrocode}
+\DeclareOption{japanese}{%
+ \def\Headertext{天}
+ \def\Bodytext{基本版面}
+ \def\Footertext{地}
+ \def\MarginNotestext{傍\\注}
+ \def\oneinchtext{1インチ}
+ \def\notshown{非表示}
+ }
+% \end{macrocode}
+% \end{allowtofu}
%
% This package has an option \Lopt{verbose}. Using it will make the
% command |\layout| type some of the parameters on the terminal.
diff --git a/Master/texmf-dist/source/latex-dev/tools/longtable.dtx b/Master/texmf-dist/source/latex-dev/tools/longtable.dtx
index 004d630fcec..c236aabb205 100644
--- a/Master/texmf-dist/source/latex-dev/tools/longtable.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/longtable.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -27,11 +27,17 @@
\ProvidesFile{longtable.dtx}
%</dtx>
%<package>\NeedsTeXFormat{LaTeX2e}[1995/06/01]
+%<package>\providecommand\DeclareRelease[3]{}
+%<package>\providecommand\DeclareCurrentRelease[2]{}
+%<package>
+%<package>\DeclareRelease{}{2020-01-02}{longtable-2020-01-07.sty}
+%<package>\DeclareCurrentRelease{}{2020-02-07}
+%<package>
%<package>\ProvidesPackage{longtable}
%<driver> \ProvidesFile{longtable.drv}
% \fi
% \ProvidesFile{longtable.dtx}
- [2020/01/07 v4.13 Multi-page Table package (DPC)]
+ [2020-02-07 v4.14 Multi-page Table package (DPC)]
%
% \iffalse
%<*driver>
@@ -303,7 +309,7 @@
% (see below), the "LTchunksize" must be at least as large as the
% number of rows in each of the head or foot sections.
%
-% This document specifies "\setcounter{LTchunksize}{10}". If you look
+% This document specifies "\setcounter{LTchunksize}{200}". If you look
% at the previous table, after the \emph{first} run of \LaTeX\ you will
% see that various parts of the table do not line up.
% \LaTeX\ will also have printed a warning that the column
@@ -877,9 +883,11 @@
% \end{macro}
%
% \begin{macro}{\LTchunksize}
-% Chunk size (The number of rows taken per "\halign"). Default 20.
+% \changes{v4.14}{2020/02/07}
+% {Increase default chunksize from 20 to 200}
+% Chunk size (The number of rows taken per "\halign"). Default 200.
% \begin{macrocode}
-\newcount\LTchunksize \LTchunksize=20
+\newcount\LTchunksize \LTchunksize=200
% \end{macrocode}
% \end{macro}
%
@@ -916,6 +924,14 @@
% \end{macro}
% \end{macro}
%
+% \begin{macro}{\LT@gbox}
+% \changes{v4.14}{2020/02/07}
+% {global box added (tools/2914)}
+% \begin{macrocode}
+\newbox\LT@gbox
+% \end{macrocode}
+% \end{macro}
+%
% \begin{macro}{\LT@cols}
% Counter for number of columns.
% \begin{macrocode}
@@ -1212,7 +1228,7 @@
% \end{macro}
%
% \begin{macro}{\LT@start}
-% % \changes{v4.13}{2020/01/07}
+% \changes{v4.13}{2020/01/07}
% {fix issue https://github.com/davidcarlisle/dpctex/issues/8}
% This macro starts the process of putting the table on the current
% page. It is not called until either a "\\" or "\endlongtable" command
@@ -1228,6 +1244,34 @@
\let\LT@start\endgraf
\endgraf\penalty\z@\vskip\LTpre\endgraf
% \end{macrocode}
+% \changes{v4.14}{2020/02/07}
+% {Guard against shrink glue on current page tools/3396 and github 183}
+% This next block was suggested by Lars Hellström in pr tools/3396
+% He documents it as:
+%
+% The original problem occurs because TeX has not yet found an awfully bad
+% "(b=*)" breakpoint and is therefore still collecting material to see if there
+% is a really good break somewhere just ahead. As we know there aren't, we
+% want to make it stop looking and break the page, so that "\pagetotal" will be
+% for the page where the table will actually end up. To achieve this, we
+% need to give \TeX\ an awfully bad, but legal, breakpoint. The simplest way of
+% doing this seems to be to insert a "\kern" that counters the "\pageshrink" for
+% the page, followed by a "\penalty" and a "\par" (to exercise the page builder).
+% We also have to make sure that this breakpoint doesn't affect how the next
+% page is broken, so we make the penalty 9999 (10000 is infinite and thus not
+% a legal breakpoint) and cancel out the "\kern" with a new "\kern".
+%
+% I don't think this is the \emph{right} solution to the problem (that would be
+% that the standard output routine has a feature for syncronizing with
+% typesetting, as part of the preparations for switching output routine), but
+% it's OK. Perhaps XOR will make it better.
+% \begin{macrocode}
+ \ifdim \pagetotal<\pagegoal \else
+ \dimen@=\pageshrink
+ \advance \dimen@ 1sp %
+ \kern\dimen@\penalty 9999\endgraf \kern-\dimen@
+ \fi
+% \end{macrocode}
% Start a new page if there is not enough room for the table head, foot,
% and one extra line.
% \begin{macrocode}
@@ -1259,7 +1303,18 @@
%
% \begin{macrocode}
\advance\dimen@ -\pagegoal
- \ifdim \dimen@>\z@\vfil\break\fi
+ \ifdim \dimen@>\z@
+ \vfil\break
+ \else
+% \end{macrocode}
+%
+% \changes{v4.14}{2020/02/07}
+% {Guard against shrink glue on current page see github 183}
+% The LT output routine does not handle shrink on the page, which can cause
+% The first page to be over-long, so forget it is there.
+% \begin{macrocode}
+ \ifdim\pageshrink>\z@\pageshrink\z@\fi
+ \fi
% \end{macrocode}
% Store height of page minus table foot in "\@colroom".
% \changes{v3.14}{1995/05/02}
@@ -1269,9 +1324,12 @@
% \end{macrocode}
% If the foot is non empty, reduce the "\vsize" and "\@colroom"
% accordingly.
+% \changes{v4.14}{2020/02/07}
+% {Rearrange vertical space tests for tools/3512 (floats on same page)}
% \begin{macrocode}
\ifvoid\LT@foot\else
- \advance\vsize-\ht\LT@foot
+% \advance\vsize-\ht\LT@foot
+ \global\advance\vsize-\ht\LT@foot
\global\advance\@colroom-\ht\LT@foot
\dimen@\pagegoal\advance\dimen@-\ht\LT@foot\pagegoal\dimen@
\maxdepth\z@
@@ -1350,8 +1408,15 @@
\fi
% \end{macrocode}
% Force one more go with the \env{longtable} output routine.
+% \changes{v4.14}{2020/02/07}
+% {Rearrange vertical space tests for tools/3512 (floats on same page)}
% \begin{macrocode}
\endgraf\penalty -\LT@end@pen
+ \ifvoid\LT@foot\else
+ \global\advance\vsize\ht\LT@foot
+ \global\advance\@colroom\ht\LT@foot
+ \dimen@\pagegoal\advance\dimen@\ht\LT@foot\pagegoal\dimen@
+ \fi
% \end{macrocode}
% Now close the group to return to the standard routine.
% \begin{macrocode}
@@ -1361,9 +1426,11 @@
% table.\footnote{This can not be the correct. However if it is omitted,
% there is a problem with marginpars, for example on page~3 of this
% document. Any Output Routine Gurus out there?}
+% \changes{v4.14}{2020/02/07}
+% {Rearrange vertical space tests for tools/3512 (floats on same page)}
% \begin{macrocode}
\global\@mparbottom\z@
- \pagegoal\vsize
+% \pagegoal\vsize
\endgraf\penalty\z@\addvspace\LTpost
% \end{macrocode}
% Footnotes. As done in the \package{multicol} package.
@@ -1452,6 +1519,8 @@
% \begin{macro}{\LT@setprevdepth}
% \changes{v4.05}{1996/11/12}
% {Macro added}
+% \changes{v4.14}{2020/02/07}
+% {spurious \cs{global} removed}
% This will be redefined to set the "\prevdepth"
% at the start of a chunk.
% \begin{macrocode}
@@ -1471,7 +1540,7 @@
\global\advance\LT@rows\@ne
\ifnum\LT@rows=\LTchunksize
\gdef\LT@setprevdepth{%
- \prevdepth\z@\global
+ \prevdepth\z@
\global\let\LT@setprevdepth\relax}%
\expandafter\LT@xtabularcr
\else
@@ -1528,11 +1597,13 @@
% \begin{macro}{\LT@echunk}
% \changes{v4.05}{1996/11/12}
% {\cs{unskip} added for pagebreak support}
+% \changes{v4.14}{2020/02/07}
+% {allocated global box (tools/2914)}
% This ends the current chunk, and removes the dummy row.
% \begin{macrocode}
\def\LT@echunk{%
\crcr\LT@save@row\cr\egroup
- \global\setbox\@ne\lastbox
+ \global\setbox\LT@gbox\lastbox
% \end{macrocode}
% The following line was added in v4.05.
% \package{longtable} relies on "\lineskip" glue (which is 0pt) to
@@ -1753,9 +1824,11 @@
% Loop through the last row, discarding glue, and saving box widths. At
% V3.04 changed the scratch box to 2, as the new "\kill" requires that
% "\box0" be preserved.
+% \changes{v4.14}{2020/02/07}
+% {allocated global box (tools/2914)}
% \begin{macrocode}
\setbox\tw@\hbox{%
- \unhbox\@ne
+ \unhbox\LT@gbox
\let\LT@old@row\LT@save@row
\global\let\LT@save@row\@empty
\count@\LT@cols
@@ -1973,13 +2046,17 @@
% vsplit off a bit of the last chunk, so that the last page did not just
% have head and foot sections, but it is hard to do this in a consistent
% manner.}
+% \changes{v4.14}{2020/02/07}
+% {Rearrange vertical space tests for tools/3512 (floats on same page)}
% \begin{macrocode}
\dimen@\pagegoal
+ \advance\dimen@\ht\LT@foot
\advance\dimen@-\ht\LT@lastfoot
\ifdim\dimen@<\ht\z@
\setbox\@cclv\vbox{\unvbox\z@\copy\LT@foot\vss}%
\@makecol
\@outputpage
+ \global\vsize\@colroom
\setbox\z@\vbox{\box\LT@head}%
% \end{macrocode}
% End of "\ifdim\dimen@<\ht\@cclc".
@@ -1993,14 +2070,17 @@
% Reset "\@colroom".
% \changes{v3.14}{1995/05/02}
% {Reset \cs{@colroom}, for tools/1584}
+% \changes{v4.14}{2020/02/07}
+% {Rearrange vertical space tests for tools/3512 (floats on same page)}
% \begin{macrocode}
- \global\@colroom\@colht
- \global\vsize\@colht
+% \global\@colroom\@colht
+% \global\vsize\@colht
% \end{macrocode}
% Put the last page of the table on to the main vertical list.
+% \changes{v4.14}{2020/02/07}
+% {Remove box from final page tools/3512}
% \begin{macrocode}
- \vbox
- {\unvbox\z@\box\ifvoid\LT@lastfoot\LT@foot\else\LT@lastfoot\fi}%
+ \unvbox\z@\box\ifvoid\LT@lastfoot\LT@foot\else\LT@lastfoot\fi
% \end{macrocode}
% End of "\ifnum\outputpenalty > -\LT@end@pen".
% \begin{macrocode}
diff --git a/Master/texmf-dist/source/latex-dev/tools/longtable.ins b/Master/texmf-dist/source/latex-dev/tools/longtable.ins
index 7ada121ea95..92a04e00d4e 100644
--- a/Master/texmf-dist/source/latex-dev/tools/longtable.ins
+++ b/Master/texmf-dist/source/latex-dev/tools/longtable.ins
@@ -3,8 +3,8 @@
%% driver files from the doc files in this package when run through
%% LaTeX or TeX.
%%
-%% Copyright (C) 1993-2020
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% Copyright (C) 1993-2021
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -45,8 +45,8 @@ The source is maintained by the LaTeX Project team and bug
reports for it can be opened at https://latex-project.org/bugs/
(but please observe conditions on bug reports sent to that address!)
-Copyright (C) 1993-2020
-The LaTeX3 Project and any individual authors listed elsewhere
+Copyright (C) 1993-2021
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/multicol.dtx b/Master/texmf-dist/source/latex-dev/tools/multicol.dtx
index 39bccef2d78..1d16a01c158 100644
--- a/Master/texmf-dist/source/latex-dev/tools/multicol.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/multicol.dtx
@@ -77,7 +77,7 @@
%% not for the payment of a license fee per se (which might or might
%% not follow from this evaluation).
%%
-%% The license fee, if any, can be payed either to the LaTeX3 fund
+%% The license fee, if any, can be payed either to the LaTeX fund
%% (see ltx3info.txt in the base LaTeX distribution) or to the author of
%% the program who can be contacted at
%%
diff --git a/Master/texmf-dist/source/latex-dev/tools/multicol.ins b/Master/texmf-dist/source/latex-dev/tools/multicol.ins
index f872b83cdee..c8838f8be22 100644
--- a/Master/texmf-dist/source/latex-dev/tools/multicol.ins
+++ b/Master/texmf-dist/source/latex-dev/tools/multicol.ins
@@ -3,8 +3,8 @@
%% driver files from the doc files in this package when run through
%% LaTeX or TeX.
%%
-%% Copyright (C) 1993-2020
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% Copyright (C) 1993-2021
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -45,8 +45,8 @@ The source is maintained by the LaTeX Project team and bug
reports for it can be opened at https://latex-project.org/bugs/
(but please observe conditions on bug reports sent to that address!)
-Copyright (C) 1993-2020
-The LaTeX3 Project and any individual authors listed elsewhere
+Copyright (C) 1993-2021
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/rawfonts.dtx b/Master/texmf-dist/source/latex-dev/tools/rawfonts.dtx
index 9c5daa57a50..f54aeaf44db 100644
--- a/Master/texmf-dist/source/latex-dev/tools/rawfonts.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/rawfonts.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/shellesc.dtx b/Master/texmf-dist/source/latex-dev/tools/shellesc.dtx
index 3b96c3e9ee3..54027cada76 100644
--- a/Master/texmf-dist/source/latex-dev/tools/shellesc.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/shellesc.dtx
@@ -1,8 +1,8 @@
% \iffalse
%% Source File: shellesc.dtx
-%% Copyright (C) 2015-2020
+%% Copyright (C) 2015-2021
%%
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file may be distributed under the terms of the LPPL.
@@ -36,7 +36,7 @@
% \title{The \textsf{shellesc} Package\thanks{This file
% has version number \fileversion, last
% revised \filedate.}}
-% \author{\LaTeX3 project}
+% \author{\LaTeX\ project}
% \date{\filedate}
%
%
diff --git a/Master/texmf-dist/source/latex-dev/tools/showkeys.dtx b/Master/texmf-dist/source/latex-dev/tools/showkeys.dtx
index 59eb699ae81..3c9236f2ef4 100644
--- a/Master/texmf-dist/source/latex-dev/tools/showkeys.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/showkeys.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -22,7 +22,7 @@
% \fi
% \iffalse
%% File: showkeys.dtx Copyright (C) 1992-1997 David Carlisle
-%% File: showkeys.dtx Copyright (C) 2006-2019 David Carlisle, LaTeX3 Project
+%% File: showkeys.dtx Copyright (C) 2006-2019 David Carlisle, LaTeX Project
%
%<*dtx>
\ProvidesFile{showkeys.dtx}
diff --git a/Master/texmf-dist/source/latex-dev/tools/somedefs.dtx b/Master/texmf-dist/source/latex-dev/tools/somedefs.dtx
index 120ad980781..825a93ec666 100644
--- a/Master/texmf-dist/source/latex-dev/tools/somedefs.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/somedefs.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/tabularx.dtx b/Master/texmf-dist/source/latex-dev/tools/tabularx.dtx
index 577730e665b..a0f75fc4fa6 100644
--- a/Master/texmf-dist/source/latex-dev/tools/tabularx.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/tabularx.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/tabularx.ins b/Master/texmf-dist/source/latex-dev/tools/tabularx.ins
index 05effd3342e..a0d39c2564a 100644
--- a/Master/texmf-dist/source/latex-dev/tools/tabularx.ins
+++ b/Master/texmf-dist/source/latex-dev/tools/tabularx.ins
@@ -3,8 +3,8 @@
%% driver files from the doc files in this package when run through
%% LaTeX or TeX.
%%
-%% Copyright (C) 1993-2020
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% Copyright (C) 1993-2021
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -45,8 +45,8 @@ The source is maintained by the LaTeX Project team and bug
reports for it can be opened at https://latex-project.org/bugs/
(but please observe conditions on bug reports sent to that address!)
-Copyright (C) 1993-2020
-The LaTeX3 Project and any individual authors listed elsewhere
+Copyright (C) 1993-2021
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/theorem.dtx b/Master/texmf-dist/source/latex-dev/tools/theorem.dtx
index 0df7dbb7649..8543ff9d7cb 100644
--- a/Master/texmf-dist/source/latex-dev/tools/theorem.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/theorem.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/tools.ins b/Master/texmf-dist/source/latex-dev/tools/tools.ins
index 5e978712215..15c64ac80ab 100644
--- a/Master/texmf-dist/source/latex-dev/tools/tools.ins
+++ b/Master/texmf-dist/source/latex-dev/tools/tools.ins
@@ -3,8 +3,8 @@
%% driver files from the doc files in this package when run through
%% LaTeX or TeX.
%%
-%% Copyright (C) 1993-2020
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% Copyright (C) 1993-2021
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -49,8 +49,8 @@ reports for it can be opened at https://latex-project.org/bugs/
(but please observe conditions on bug reports sent to that address!)
-Copyright (C) 1993-2020
-The LaTeX3 Project and any individual authors listed elsewhere
+Copyright (C) 1993-2021
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/trace.dtx b/Master/texmf-dist/source/latex-dev/tools/trace.dtx
index 4a08f569bb5..7ab6e18e25b 100644
--- a/Master/texmf-dist/source/latex-dev/tools/trace.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/trace.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/varioref.dtx b/Master/texmf-dist/source/latex-dev/tools/varioref.dtx
index 2bba60465e0..eac06580e73 100644
--- a/Master/texmf-dist/source/latex-dev/tools/varioref.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/varioref.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/varioref.ins b/Master/texmf-dist/source/latex-dev/tools/varioref.ins
index 951eedad891..559f1f28542 100644
--- a/Master/texmf-dist/source/latex-dev/tools/varioref.ins
+++ b/Master/texmf-dist/source/latex-dev/tools/varioref.ins
@@ -3,8 +3,8 @@
%% driver files from the doc files in this package when run through
%% LaTeX or TeX.
%%
-%% Copyright (C) 1993-2020
-%% The LaTeX3 Project and any individual authors listed elsewhere
+%% Copyright (C) 1993-2021
+%% The LaTeX Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file is part of the Standard LaTeX `Tools Bundle'.
@@ -45,8 +45,8 @@ The source is maintained by the LaTeX Project team and bug
reports for it can be opened at https://latex-project.org/bugs/
(but please observe conditions on bug reports sent to that address!)
-Copyright (C) 1993-2020
-The LaTeX3 Project and any individual authors listed elsewhere
+Copyright (C) 1993-2021
+The LaTeX Project and any individual authors listed elsewhere
in this file.
This file was generated from file(s) of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/verbatim.dtx b/Master/texmf-dist/source/latex-dev/tools/verbatim.dtx
index e62886e0033..fcbaf28172e 100644
--- a/Master/texmf-dist/source/latex-dev/tools/verbatim.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/verbatim.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/xr.dtx b/Master/texmf-dist/source/latex-dev/tools/xr.dtx
index a963886cde7..c0d0b90c0fc 100644
--- a/Master/texmf-dist/source/latex-dev/tools/xr.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/xr.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.
diff --git a/Master/texmf-dist/source/latex-dev/tools/xspace.dtx b/Master/texmf-dist/source/latex-dev/tools/xspace.dtx
index ebe8d0f9478..adcfe154da3 100644
--- a/Master/texmf-dist/source/latex-dev/tools/xspace.dtx
+++ b/Master/texmf-dist/source/latex-dev/tools/xspace.dtx
@@ -1,8 +1,8 @@
% \iffalse meta-comment
%
-% Copyright (C) 1993-2020
+% Copyright (C) 1993-2021
%
-% The LaTeX3 Project and any individual authors listed elsewhere
+% The LaTeX Project and any individual authors listed elsewhere
% in this file.
%
% This file is part of the Standard LaTeX `Tools Bundle'.