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%D \module
%D [ file=supp-dir,
%D version=2004.11.11,
%D title=\CONTEXT\ Support Macros,
%D subtitle=Directional Things,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA / Hans Hagen \& Ton Otten}]
%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 Inspired by and needed for Adam Lindsay's \XETEX\ efforts:
%D
%D \starttyping
%D \starttext
%D \input tufte \par
%D \pardir TRT \input tufte \par \input tufte \par
%D \pardir TLT \input tufte \par
%D \stoptext
%D \stoptyping
\unprotect
\chardef \inlinedirection \zerocount % 0==notset 1==LR 2==RL
\let \checkinlinedirection \donothing
\beginETEX \beginL
\ifx\pardir \undefined
\def\pardir#1#2#3% messages end up in a higher level command
{\global\TeXXeTstate\plusone
\if#2L\chardef\inlinedirection\plusone\else
\if#2R\chardef\inlinedirection\plustwo\fi\fi
\checkinlinedirection} % needed / added
\let\normalpardir\pardir
\def\checkinlinedirection
{\ifcase\inlinedirection\or\beginL\or\beginR\fi}
\else
% \let\normalpardir\pardir
% \def\pardir#1#2#3%
% {\if#2L\chardef\inlinedirection\plusone\else
% \if#2R\chardef\inlinedirection\plustwo\fi\fi
% \normalpardir#1#2#3}
% \def\beginL
% {} % todo: \normalpardir...
% \def\beginR
% {} % todo: \normalpardir...
% \def\checkinlinedirection
% {\ifcase\inlinedirection\or\beginL\or\beginR\fi}
\fi
\endETEX
% see core-ini.tex
%
% \appendtoks \checkinlinedirection \to \everypar
\protect \endinput
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