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%D \module
%D [ file=strc-mat,
%D version=2008.10.20,
%D title=\CONTEXT\ Structure Macros,
%D subtitle=Math Numbering,
%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 Structure Macros / Math Formulas}
%D This module only provides the code for defining formulas and
%D fetching parameters. The action takes place later.
\unprotect
\let\currentformula\s!unknown
\def\formulaparameter #1{\csname\doformulaparameter{\??fm\currentformula}#1\endcsname}
\def\formulaparameterhash#1{\doformulaparameterhash {\??fm\currentformula}#1}
\def\doformulaparameter #1#2{\ifcsname#1#2\endcsname#1#2\else\expandafter\doformulaparentparameter \csname#1\s!parent\endcsname#2\fi}
\def\doformulaparameterhash#1#2{\ifcsname#1#2\endcsname #1\else\expandafter\doformulaparentparameterhash\csname#1\s!parent\endcsname#2\fi}
\def\detokenizedformulaparameter#1{\detokenize\expandafter\expandafter\expandafter{\csname\??fm\currentformula#1\endcsname}}
\def\doformulaparentparameter #1#2{\ifx#1\relax\s!empty\else\doformulaparameter #1#2\fi}
\def\doformulaparentparameterhash#1#2{\ifx#1\relax \else\doformulaparameterhash#1#2\fi}
\def\dosetformulaattributes#1#2% style color
{\edef\fontattributehash {\formulaparameterhash#1}%
\edef\colorattributehash{\formulaparameterhash#2}%
\ifx\fontattributehash \empty\else\dosetfontattribute \fontattributehash #1\fi
\ifx\colorattributehash\empty\else\dosetcolorattribute\colorattributehash#2\fi}
\def\getformulaparameters{\getparameters[\??fm]}
%D \macros
%D {setupformulas}
\newtoks \everysetupformulas
\unexpanded\def\setupformulas
{\dodoubleempty\dosetupformulas}
\def\dosetupformulas[#1][#2]%
{\ifsecondargument
\edef\currentformula{#1}%
\getparameters[\??fm#1][#2]%
\else
% \let\currentformula\v!formula % hm
\let\currentformula\empty
\getparameters[\??fm][#1]%
\fi
\the\everysetupformulas
\let\currentformula\empty}
%D Not yet cleanup up:
%D \macros
%D {setuptextformulas}
%D
%D This command sets up in||line math. Most features deals
%D with grid snapping and are experimental.
\newtoks \everysetuptextformulas
\unexpanded\def\setuptextformulas
{\dosingleempty\dosetuptextformulas}
\def\dosetuptextformulas[#1]%
{\getparameters[\??mt][#1]%
\the\everysetuptextformulas}
\protect \endinput
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