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%D \module
%D [ file=math-toy,
%D version=2020.08.31,
%D title=\CONTEXT\ Math Macros,
%D subtitle=Toy math,
%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.
\writestatus{loading}{ConTeXt Math Macros / Toy}
\unprotect
%D Just an example:
%D
%D \starttyping
%D \enabletrackers[math.toysymbol]
%D
%D \definemathtoysymbol[Plus] [bin][+]
%D \definemathtoysymbol[Minus][bin][-]
%D \definemathtoysymbol[Equal][rel][=]
%D
%D $\dorecurse{199}{x_{#1} \ifodd#1\relax\Plus\else\Minus\fi} x_{200} \Equal n$ \blank
%D \stoptyping
\permanent\tolerant\protected\def\definemathtoysymbol[#1]#*[#2]#*[#3]%
{\ifarguments\or\or\or
\setuevalue{#1}{\math_toy_define_symbol_indeed{\mathcodechecked{#2}}{#3}}%
\fi}
\protected\def\math_toy_define_symbol_traced#1#2%
{\normalexpanded{\discretionary class #1 %
{$\Ustyle\number\mathstyle \darkred #2$}%
{$\Ustyle\number\mathstyle \darkblue #2$}%
{$\Ustyle\number\mathstyle \darkgreen #2$}}}
\protected\def\math_toy_define_symbol_normal#1#2%
{\normalexpanded{\discretionary class #1 %
{$\Ustyle\number\mathstyle #2$}%
{$\Ustyle\number\mathstyle #2$}%
{$\Ustyle\number\mathstyle #2$}}}
\installtextracker
{math.toysymbol}
{\let\math_toy_define_symbol_indeed\math_toy_define_symbol_traced}
{\let\math_toy_define_symbol_indeed\math_toy_define_symbol_normal}
\let\math_toy_define_symbol_indeed\math_toy_define_symbol_normal
\protect
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