%%
%% This is file `autofootnoterule.tex',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% luabidi.dtx  (with options: `autofootnoterule.tex,package')
%% 
%%  luabidi.dtx
%%  Copyright 2013 Arthur Reutenauer
%% 
%%  This work may be distributed and/or modified under the
%%  conditions of the LaTeX Project Public License, either version 1.3
%%  of this license of (at your option) any later version.
%%  The latest version of this license is in
%%    http://www.latex-project.org/lppl.txt
%%  and version 1.3 or later is part of all distributions of LaTeX
%%  version 2005/12/01 or later.
%% 
%%  This work has the LPPL maintenance status `maintained'.
%% 
%%  The Current Maintainer of this work is Arthur Reutenauer.
%% 
%%  This work consists of the files luabidi.dtx and luabidi.ins and the derived files arabmaths.tex, autofootnoterule.tex, luabidi.sty, textwidthfootnoterule.tex.
%% 
%% \CharacterTable
%%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%%   Digits        \0\1\2\3\4\5\6\7\8\9
%%   Exclamation   \!     Double quote  \"     Hash (number) \#
%%   Dollar        \$     Percent       \%     Ampersand     \&
%%   Acute accent  \'     Left paren    \(     Right paren   \)
%%   Asterisk      \*     Plus          \+     Comma         \,
%%   Minus         \-     Point         \.     Solidus       \/
%%   Colon         \:     Semicolon     \;     Less than     \<
%%   Equals        \=     Greater than  \>     Question mark \?
%%   Commercial at \@     Left bracket  \[     Backslash     \\
%%   Right bracket \]     Circumflex    \^     Underscore    \_
%%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%%   Right brace   \}     Tilde         \~}
\ifx \CatEscape\undefined
    \chardef\CatEscape=0
    \chardef\CatOpen=1
    \chardef\CatClose=2
    \chardef\CatIgnore=9
    \chardef\CatLetter=11
    \chardef\CatOther=12
    \chardef\CatActive=13 % is defined in Plain already

    \chardef\CatUsCode=\catcode`\_
\fi

\catcode`\_=\CatLetter % top level macro file

\def\l@fn{%
  \hbox to \columnwidth
  {\luatexpagedir TLT\vbox{\kern -3\p@
   \hrule width .4\columnwidth \kern2.6\p@}\hfil}}
\def\r@fn{%
   \hrule width .4\columnwidth\kern 2.6\p@}

\def\@makefnmark{\hbox{$^{\hbox{\scriptsize\@thefnmark}}\m@th$}}

\def\leftfootnoterule{\global\def\footnoterule{\l@fn}}
\def\rightfootnoterule{\global\def\footnoterule{\r@fn}}
\leftfootnoterule

%%% \beginprog
\newread\old_foot_file
\newwrite\foot_file
\def\foot_file_name{\jobname.fot\relax}
\def\init_footnote{%
   \openin\old_foot_file\foot_file_name
   \ifeof\old_foot_file  \closein\old_foot_file
   \else  \closein\old_foot_file
      \read_foot_file
   \fi
   \immediate\openout\foot_file\foot_file_name
   \immediate\write\foot_file{\relax}%
   \global\let\init_footnote\relax
   }

\newcount\foot_name_no  % for generating footnote mark names

\newcount\autofootnote
\def\fnpp_next_footnote{%
    \init_footnote
    \global\advance\foot_name_no\@ne
    \global\advance\c@footnote\@ne
    \edef\do_write{%
\immediate\write\foot_file{%
    \string\advance\autofootnote\@ne
    \string\expandafter\xdef
\string\csname\space f@\number\foot_name_no \endcsname{%
\string\number\autofootnote
}%
    }%
}%
    \do_write
    \global\autofootnote 0\csname f@\number\foot_name_no \endcsname \relax
    }

\def\read_foot_file{%
   \begingroup
      \catcode`\@\CatLetter \catcode`\^^M\CatIgnore
      \input \foot_file_name
   \endgroup
   }

\let\fnpp_orig_outputpage=\@outputpage
\def\@outputpage{%
    \ifx \init_footnote\relax
\immediate\write\foot_file{\autofootnote\z@}%
    \fi
    \fnpp_orig_outputpage
    }

\let\FnppOrigFootnote=\footnote % save original bindings
\let\FnppOrigFootnotemark=\footnotemark

\def\footnote{%
    \@ifnextchar[% % ] (Emacs)
\@xfootnote
{\fnpp_next_footnote \ifnum\autofootnote=1\rightfootnoterule\fi \@xfootnote[\the\c@footnote] %
}%
    }
\def\footnotemark{%
    \@ifnextchar[% % ] (Emacs)
\@xfootnotemark
{\fnpp_next_footnote \ifnum\autofootnote=1\rightfootnoterule\fi \@xfootnotemark[\the\c@footnote]}%
    }

\def\footnotemarkLR{%
    \@ifnextchar[% % ] (Emacs)
\@xfootnotemark
{\fnpp_next_footnote \ifnum\autofootnote=1\leftfootnoterule\fi\@xfootnotemark[\the\c@footnote]}%
    }

\def\Footnote#1{%
\begingroup
\footnotemarkLR%
\renewcommand{\thefootnote}{\@arabic\c@footnote}%
\luatexpardir TLT \luatextextdir TLT\footnotetext{#1}%
\endgroup
}
\endinput
%%
%% End of file `autofootnoterule.tex'.
