[NTG-context] tikz + lmtx

[Aditya Mahajan via ntg-context <ntg-context@ntg.nl>]

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Hi all,

For a few months now, all features of tikz have not been working with LMTX. After help from Hans and a bit of trial and error, I think that figured out what was going wrong with the catcodes in m-tikz: Since the texcatcodes are different from what tikz expects, the catcodes have to be set inside \starttikzpicture (in addition to before the loading of tikz files, which was already being done). 

I am attaching the working m-tikz.mkxl file. 

I have tested this on my course notes, which make extensive use of simple tikz block diagrams and pgfplots graphs. Perhaps others who were having issues with tikz could test if this fixes everything and, if so, we can add this to the distribution.

Aditya

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%D \module
%D   [       file=m-tikz,
%D        version=2021.07.12,
%D          title=\CONTEXT\ Extra Modules,
%D       subtitle=TIKZ support,
%D         author=Hans Hagen,
%D           date=\currentdate,
%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.

%D A fixed variant of the t-tikz module distributed with tikz. For practical reasons
%D per 2021 we split the module for \MKIV\ and \LMTX. (Maybe some day I'll optimize
%D TIKZ a bit.)
%D
%D All these t-* modules in the tikz distribution make no sense as we can just load
%D them here which is way cleaner. There is also some mkii filename mapping going on
%D that is not needed on todays systems (windows has no 8.3 limitation and on unix
%D tds finally adopted a case insensitive approach.)

%D Just in case someone does a hard input ...

\ifdefined\pgfdefined    \endinput \fi
\ifdefined\pgfcoredefined\endinput \fi

%D ... but normally we end up here:

\startmodule[tikz]

\ifdefined\pdflastxpos \else
    \unprotect
        \frozen\overloaded\protected\def\pdflastxpos{\numexpr\clf_lastxpos\relax}
        \frozen\overloaded\protected\def\pdflastypos{\numexpr\clf_lastypos\relax}
    \protect
\fi

\newcatcodetable \tikzcatcodes

\startcatcodetable \tikzcatcodes
    \catcode\tabasciicode             \spacecatcode
    \catcode\endoflineasciicode       \endoflinecatcode
    \catcode\formfeedasciicode        \endoflinecatcode
    \catcode\spaceasciicode           \spacecatcode
    \catcode\endoffileasciicode       \ignorecatcode
    \catcode\circumflexasciicode      \superscriptcatcode
    \catcode\underscoreasciicode      \subscriptcatcode
    \catcode\ampersandasciicode       \alignmentcatcode
    \catcode\backslashasciicode       \escapecatcode
    \catcode\leftbraceasciicode       \begingroupcatcode
    \catcode\rightbraceasciicode      \endgroupcatcode
    \catcode\dollarasciicode          \mathshiftcatcode
    \catcode\hashasciicode            \parametercatcode
    \catcode\commentasciicode         \commentcatcode
    \catcode\atsignasciicode          \lettercatcode
    \catcode\exclamationmarkasciicode \othercatcode
    \catcode\questionmarkasciicode    \lettercatcode
    \catcode\tildeasciicode           \activecatcode
    \catcode\barasciicode             \othercatcode
\stopcatcodetable

\permanent\protected\def\starttikzinput
  {\pushoverloadmode
   \pushcatcodetable
   \setcatcodetable\tikzcatcodes
   \pushmacro\meaning
   \let\meaning\meaningless
   \autoparagraphmode\zerocount}

\permanent\protected\def\stoptikzinput
  {\autoparagraphmode\plusone
   \popcatcodetable
   \popmacro\meaning
   \popoverloadmode}

\permanent\protected\def\tikzinputfile#1%
  {\starttikzinput
   \input{#1}\relax
   \stoptikzinput}

\permanent\protected\def\tikzerrormessage#1#2#3%
  {\writestatus{#1}{#2}}

% For now we need this but we need to educate the user to wrap settings in the
% wrappers. So some day the next line will go. I need to check what commands are
% possible outside a picture.

\overloadmode\zerocount

\newtoks\everytikzpicture

% \appendtoks
%     \resetcharacterspacing
% \to \everytikzpicture

\permanent\protected\def\starttikzsettings
  {\pushoverloadmode
   \pushmacro\meaning
   \let\meaning\meaningless
   \autoparagraphmode\zerocount}

\permanent\protected\def\stoptikzsettings
  {\autoparagraphmode\plusone
   \popmacro\meaning
   \popoverloadmode}

\permanent\protected\def\starttikzpicture
  {\dontleavehmode
   \hcontainer\bgroup
   \setcatcodetable\tikzcatcodes
   \the\everytikzpicture
   \autoparagraphmode\zerocount
   \pushmacro\meaning
   \let\meaning\meaningless
 % \pushoverloadmode
   \ifdefined\PackageError\else \let\PackageError\tikzerrormessage \fi
   \tikzpicture}

\permanent\protected\def\stoptikzpicture
  {\endtikzpicture
 % \popoverloadmode
   \popmacro\meaning
   \egroup}

\let\pgfdefined    \relax
\let\pgfcoredefined\relax

\tikzinputfile{pgfutil-common.tex}
\tikzinputfile{pgfutil-context.def}
\tikzinputfile{pgfrcs.code.tex}
\tikzinputfile{pgfsys.code.tex}
\tikzinputfile{pgfkeys.code.tex}
\tikzinputfile{pgfsyssoftpath.code.tex}
\tikzinputfile{pgfsysprotocol.code.tex}
\tikzinputfile{pgfcore.code.tex}
\tikzinputfile{pgffor.code.tex}
\tikzinputfile{pgfmoduleplot.code.tex}
\tikzinputfile{tikz.code.tex}

\let\startpgfpicture             \pgfpicture              \let\stoppgfpicture            \endpgfpicture
\let\startpgfscope               \pgfscope                \let\stoppgfscope              \endpgfscope
\let\startpgflowlevelscope       \pgflowlevelscope        \let\stoppgflowlevelscope      \endpgflowlevelscope
\let\startpgfinterruptpath       \pgfinterruptpath        \let\stoppgfinterruptpath      \endpgfinterruptpath
\let\startpgfinterruptpicture    \pgfinterruptpicture     \let\stoppgfinterruptpicture   \endpgfinterruptpicture
\let\startpgfinterruptboundingbox\pgfinterruptboundinbox  \let\stoppgfinterruptboudingbox\endpgfinterruptboundingbox

\let\normalusepgfmodule  \usepgfmodule
\let\normalusepgflibrary \usepgflibrary
\let\normalusetikzlibrary\usetikzlibrary

\tolerant\protected\def\usepgfmodule[#1]#;#2% somehow both variants are used
  {\starttikzinput
   \normalusepgfmodule[#1#2]%
   \stoptikzinput}

\tolerant\protected\def\usepgflibrary[#1]#;#2% somehow both variants are used
  {\starttikzinput
   \normalusepgflibrary[#1#2]%
   \stoptikzinput}

\tolerant\protected\def\usetikzlibrary[#1]#;#2% somehow both variants are used
  {\starttikzinput
   \normalusetikzlibrary[#1#2]%
   \stoptikzinput}

\usepgfmodule[shapes]
\usepgfmodule[plot]
\usepgfmodule[matrix]
\usepgfmodule[decorations]

\definefilesynonym [pgfplots]      [tikz-pgfplots]
\definefilesynonym [pgfplotstable] [tikz-pgfplotstable]

\stopmodule

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