%% This file is luabidi.sty %% This is part of the luabidi package %% %% Copyright © 2009 Vafa Khalighi, 2013--2019 Arthur Reutenauer, 2019 Jürgen Spitzmüller %% %%%% 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. \NeedsTeXFormat{LaTeX2e} \ProvidesPackage{luabidi}[2019/10/27 v0.5 Bidirectional typesetting in LuaTeX] \RequirePackage{etoolbox} % % Package options % \DeclareOption{arabmaths}{\input{luabidi-arabmaths.def}} \newif\ifluabidi@autofootnoterule \DeclareOption{autofootnoterule}{\luabidi@autofootnoteruletrue} \newif\ifluabidi@textwidthfootnoterule \DeclareOption{textwidthfootnoterule}{\luabidi@textwidthfootnoteruletrue} \ProcessOptions % % General command and switches % \newif\if@RTL \newif\if@RTLmain \@RTLmainfalse \def\setRTLmain{\@RTLmaintrue\pagedir TRT \bodydir TRT \pardir TRT \textdir TRT} \def\setRTL{\@RTLtrue\pardir TRT \textdir TRT} \let\setRL=\setRTL \def\setLTR{\@RTLfalse\pardir TLT \textdir TLT} \let\setLR=\setLTR \let\unsetRTL=\setLTR \let\unsetLTR=\setRTL \def\RTL{\@RTLtrue\trivlist \pardir TRT \textdir TRT\item\relax} \def\endRTL{\@RTLfalse\endtrivlist} \def\LTR{\trivlist \pardir TLT \textdir TLT\item\relax} \def\endLTR{\endtrivlist} \def\@ensure@RTL#1{\if@RTL#1\else\RLE{#1}\fi} \def\@ensure@LTR#1{\if@RTL\LRE{#1}\else{#1}\fi} \def\@ensure@dir#1{\if@RTL\RLE{#1}\else{#1}\fi} \let\@ensure@maindir=\@ensuredir \let\n@xt=\ \DeclareRobustCommand*\LRE{\protect\pLRE} \def\pLRE{\protect\afterassignment\moreLRE \let\n@xt= } \DeclareRobustCommand*\RLE{\protect\pRLE} \def\pRLE{\protect\afterassignment\moreRLE \let\n@xt= } \def\bracetext{\ifcat\n@xt{\else\ifcat\n@xt}\fi \errmessage{Missing left brace has been substituted}\fi \bgroup} \def\moreLRE{\bracetext \aftergroup\unsetLTR \setLTR\@RTLfalse} \def\moreRLE{\bracetext \aftergroup\unsetRTL \setRTL\@RTLtrue} \let\LR=\LRE \let\RL=\RLE \def\hboxR#1{\hbox{\RL{#1}}} % % Footnotes % \input{luabidi-footnotes.def} \ifluabidi@textwidthfootnoterule \textwidthfootnoterule \fi % This needs to be loaded late because of the switch \AtEndPreamble{% \makeatletter \ifluabidi@autofootnoterule \input{luabidi-autofootnoterule.def} \fi \makeatother } \endinput