% This is the file MULEenc.sty of the CJK package
%   providing an interface to `cjk-enc.el' (a special Emacs mode)
%
% created by Werner Lemberg <wl@gnu.org>
%
% Version 4.8.5 (16-Oct-2021)

% Copyright (C) 1994-2021  Werner Lemberg <wl@gnu.org>
%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2 of the License, or
% (at your option) any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program in doc/COPYING; if not, write to the Free
% Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
% MA 02110-1301 USA

\makeatletter
\endlinechar \m@ne

\def\fileversion{4.8.5}
\def\filedate{2021/10/16}
\ProvidesPackage{MULEenc}[\filedate\space\fileversion]
\NeedsTeXFormat{LaTeX2e}[1998/06/01]


% to allow Latin encodings in verbatim environments we activate the
%     character ^^7f and define it as a multiplex character which executes
%     its first argument; it will also be used as a delimiter.

\catcode "7F \active

\def^^7f{
  \ifx\protect \@typeset@protect
    \expandafter\mule@arg
  \else
    \noexpand ^^7f
  \fi}

\def\mule@arg#1^^7f#2^^7f{
  \mule@@arg #2^^7f#1^^7f#2^^7f}

\def\mule@@arg#1^^7f{
  \mule@ifbslash #1^^7f
    \expandafter\mule@@@arg
  \else
    \expandafter\mule@exec
  \fi}

\def\mule@@@arg#1^^7f#2^^7f{
  \csname mule@\string #1\endcsname{#2}}


% the pseudo-if \mule@ifbslash tests whether its argument contains a
%     backslash with a character category code (this happens in verbatim
%     environments). We need to change the catcode of `\' locally to
%     achieve that.
%
% \mule@exec then swallows this backslash so we can call \csname (twice).
%
% All these weird constructions assure that we do not lose kerning between
%     characters---only macro expansion is allowed!

\let\mule@@@ \@empty

{\catcode`\|=\z@
 \catcode`\\=12\relax
 |gdef|mule@ifbslash#1^^7f{
   |mule@@ifbslash #1\^^7f}
 |gdef|mule@@ifbslash#1\#2^^7f{
   |expandafter|expandafter|expandafter|ifx
    |expandafter|csname |string #2mule@@@|endcsname |@empty}
 |gdef|mule@exec#1^^7f\#2^^7f{
   |expandafter|csname 
   mule@#1|expandafter |endcsname |csname #2|endcsname}
}


% here come the definitions for the macros cjk-enc.el emits.

% first some \let's to avoid problems in tabbing environments.

\AtBeginDocument{
  \let\mule@acute \'
  \let\mule@grave \`
  \let\mule@macron \=
  \let\mule@hacek \v}

% and now the missing definitions for cjk-enc.el to represent Latin
%     encodings.

% these definitions may be overridden with \ProvideTextCommandDefault
%     commands.

\def\textonequarter{\ensuremath{\frac14}}
\def\textonehalf{\ensuremath{\frac12}}
\def\textthreequarters{\ensuremath{\frac34}}

% LaTeX defines the following macros as \math... instead of \text...,
%     but we want that all commands work in text mode.

\def\textonesuperior{\ensuremath{{^1}}}
\def\texttwosuperior{\ensuremath{{^2}}}
\def\textthreesuperior{\ensuremath{{^3}}}

% the next macros are text versions of the corresponding math macros.

\def\textlnot{\ensuremath{\lnot}}
\def\textpm{\ensuremath{\pm}}
\def\textmu{\ensuremath{\mu}}
\def\texttimes{\ensuremath{\times}}
\def\textdiv{\ensuremath{\div}}

% this macro is not in the LaTeX 2e base package

\def\textcommercialat{\char64}

% the following macro is not defined in standard LaTeX2e.
%
%     JIS X 0201:   0x7E    \textoverscore (U+203E)


% to make the multiplex macro work with \uppercase and \lowercase too,
%     numbers are used as parameters in the ^^7f macro.

\def\mule@def#1{\expandafter\def\csname mule@\string #1\endcsname}

% accents

\mule@def{8}{\"}
\mule@def{15}{\mule@macron}
\mule@def{20}{\mule@acute}
\mule@def{24}{\c}
\mule@def{32}{\mule@grave}
\mule@def{33}{\^}
\mule@def{34}{\~}
\mule@def{48}{\k}
\mule@def{49}{\u}
\mule@def{51}{\mule@hacek}
\mule@def{52}{\.}
\mule@def{53}{\r}
\mule@def{55}{\H}

% Vietnamese hook (\h; only defined in T5 encoding) and dot below accent

\mule@def{71}{\d}
\mule@def{73}{\h}

% symbols

\mule@def{1}{\textexclamdown}
\mule@def{2}{\textcent}
\mule@def{3}{\textsterling}
\mule@def{4}{\textcurrency}
\mule@def{5}{\textyen}
\mule@def{6}{\textbrokenbar}
\mule@def{7}{\S}
\mule@def{9}{\copyright}
\mule@def{10}{\textordfeminine}
\mule@def{11}{\guillemotleft}
\mule@def{12}{\textlnot}
\mule@def{14}{\textregistered}
\mule@def{16}{\textdegree}
\mule@def{17}{\textpm}
\mule@def{18}{\texttwosuperior}
\mule@def{19}{\textthreesuperior}
\mule@def{21}{\textmu}
\mule@def{22}{\P}
\mule@def{23}{\textperiodcentered}
\mule@def{25}{\textonesuperior}
\mule@def{26}{\textordmasculine}
\mule@def{27}{\guillemotright}
\mule@def{28}{\textonequarter}
\mule@def{29}{\textonehalf}
\mule@def{30}{\textthreequarters}
\mule@def{31}{\textquestiondown}
\mule@def{36}{\textcommercialat}
\mule@def{37}{\textquotedbl}
\mule@def{38}{\texttimes}
\mule@def{39}{\textdollar}
\mule@def{40}{\textquoteright}
\mule@def{41}{\textless}
\mule@def{42}{\textgreater}
\mule@def{43}{\textasciicircum}
\mule@def{44}{\textunderscore}
\mule@def{45}{\textdiv}
\mule@def{46}{\textquoteleft}
\mule@def{47}{\textbraceleft}
\mule@def{50}{\textbar}
\mule@def{54}{\textbraceright}
\mule@def{56}{\textoverscore}
\mule@def{99}{\nobreakspace}

\mule@def{35}{\textnumero}          % Cyrillic Number Sign

% letters

\let\TEXTMALTESEH \textmalteseH
\def\I{I}                           % uppercase form of \i

\let\TEXTTSTROKE \textTstroke
\mule@def{59}{\textkra}

% commands

\mule@def{0}{\@firstofone}          % for commands as arguments which exist
                                    % in both uppercase and lowercase forms
                                    % like \AA and \aa
\mule@def{64}{\CJKspace\@gobble}
\mule@def{65}{\CJKnospace\@gobble}
\mule@def{66}{\CJKenc{JIS}\@gobble}
\mule@def{67}{\CJKenc{GB}\@gobble}
\mule@def{68}{\CJKenc{Bg5}\@gobble}
\mule@def{69}{\CJKenc{KS}\@gobble}
\mule@def{70}{\CJKenc{SJIS}\@gobble}

% in previous versions we have used ^^a0 for calling \CJKchar, but to
%     support GBK and Big 5+ encodings which both need this slot we use the
%     ^^7f interface also.

\mule@def{72}{\mule@@@@arg}

\def\mule@@@@arg#1^^7f#2^^7f#3^^7f{
  \uppercase{\CJKchar[#1]{#2}{#3}}}


% Thai support. We need the many \bgroup and \egroup commands to make it
%     work with ulem.sty.

\mule@def{57}{\bgroup\fontencoding{C90}\selectfont
              \bgroup\bgroup\@gobble}                   % begin Thai
\mule@def{58}{\egroup
              \egroup\egroup\@gobble}                   % end Thai
\mule@def{60}{\mule@char}                               % Thai diacritic
\mule@def{61}{\Thaibreak\@gobble}                       % Thai word break
\mule@def{62}{\nobreak\Thaiglue\nobreak\mule@char}      % Thai base character
\mule@def{63}{\mule@ignorespaces}                       % Thai EOL

\def\mule@char#1{\char #1 }
\def\mule@ignorespaces#1{\ignorespaces}

\newcommand{\Thaiglue}{\hskip \z@ \@plus .03\baselineskip}
\newcommand{\Thaibreak}{\hskip \z@}

\newcommand{\Thaispace}{\mule@def{63}{}}
\newcommand{\Thainospace}{\mule@def{63}{\mule@ignorespaces}}


% preprocessed mode now uses the ^^7f interface for CJK characters also
%     to make it coexist with normal mode.
%
% the \@gobble macro is used to swallow the first element in \CJK@<number>;
%     this is either \CJK@disableMakeUppercase or \relax if not needed.

\def\mule@@def#1{
  \expandafter\def\csname mule@\string #1\endcsname##1{
    \expandafter\expandafter\expandafter\@gobble
    \csname CJK@\number `#1\endcsname{##1}
    \CJK@ignorespaces}}

\mule@@def{^^81}
\mule@@def{^^82}
\mule@@def{^^83}
\mule@@def{^^84}
\mule@@def{^^85}
\mule@@def{^^86}
\mule@@def{^^87}
\mule@@def{^^88}
\mule@@def{^^89}
\mule@@def{^^8a}
\mule@@def{^^8b}
\mule@@def{^^8c}
\mule@@def{^^8d}
\mule@@def{^^8e}
\mule@@def{^^8f}
\mule@@def{^^90}
\mule@@def{^^91}
\mule@@def{^^92}
\mule@@def{^^93}
\mule@@def{^^94}
\mule@@def{^^95}
\mule@@def{^^96}
\mule@@def{^^97}
\mule@@def{^^98}
\mule@@def{^^99}
\mule@@def{^^9a}
\mule@@def{^^9b}
\mule@@def{^^9c}
\mule@@def{^^9d}
\mule@@def{^^9e}
\mule@@def{^^9f}
\mule@@def{^^a0}
\mule@@def{^^a1}
\mule@@def{^^a2}
\mule@@def{^^a3}
\mule@@def{^^a4}
\mule@@def{^^a5}
\mule@@def{^^a6}
\mule@@def{^^a7}
\mule@@def{^^a8}
\mule@@def{^^a9}
\mule@@def{^^aa}
\mule@@def{^^ab}
\mule@@def{^^ac}
\mule@@def{^^ad}
\mule@@def{^^ae}
\mule@@def{^^af}
\mule@@def{^^b0}
\mule@@def{^^b1}
\mule@@def{^^b2}
\mule@@def{^^b3}
\mule@@def{^^b4}
\mule@@def{^^b5}
\mule@@def{^^b6}
\mule@@def{^^b7}
\mule@@def{^^b8}
\mule@@def{^^b9}
\mule@@def{^^ba}
\mule@@def{^^bb}
\mule@@def{^^bc}
\mule@@def{^^bd}
\mule@@def{^^be}
\mule@@def{^^bf}
\mule@@def{^^c0}
\mule@@def{^^c1}
\mule@@def{^^c2}
\mule@@def{^^c3}
\mule@@def{^^c4}
\mule@@def{^^c5}
\mule@@def{^^c6}
\mule@@def{^^c7}
\mule@@def{^^c8}
\mule@@def{^^c9}
\mule@@def{^^ca}
\mule@@def{^^cb}
\mule@@def{^^cc}
\mule@@def{^^cd}
\mule@@def{^^ce}
\mule@@def{^^cf}
\mule@@def{^^d0}
\mule@@def{^^d1}
\mule@@def{^^d2}
\mule@@def{^^d3}
\mule@@def{^^d4}
\mule@@def{^^d5}
\mule@@def{^^d6}
\mule@@def{^^d7}
\mule@@def{^^d8}
\mule@@def{^^d9}
\mule@@def{^^da}
\mule@@def{^^db}
\mule@@def{^^dc}
\mule@@def{^^dd}
\mule@@def{^^de}
\mule@@def{^^df}
\mule@@def{^^e0}
\mule@@def{^^e1}
\mule@@def{^^e2}
\mule@@def{^^e3}
\mule@@def{^^e4}
\mule@@def{^^e5}
\mule@@def{^^e6}
\mule@@def{^^e7}
\mule@@def{^^e8}
\mule@@def{^^e9}
\mule@@def{^^ea}
\mule@@def{^^eb}
\mule@@def{^^ec}
\mule@@def{^^ed}
\mule@@def{^^ee}
\mule@@def{^^ef}
\mule@@def{^^f0}
\mule@@def{^^f1}
\mule@@def{^^f2}
\mule@@def{^^f3}
\mule@@def{^^f4}
\mule@@def{^^f5}
\mule@@def{^^f6}
\mule@@def{^^f7}
\mule@@def{^^f8}
\mule@@def{^^f9}
\mule@@def{^^fa}
\mule@@def{^^fb}
\mule@@def{^^fc}
\mule@@def{^^fd}
\mule@@def{^^fe}


% if the `verbatim' package is loaded it is possible to improve the output
%     automatically, namely, to avoid breaking of overfull lines in a
%     verbatim environment. The following command will install a hook to
%     suppress insertion of glue between Thai glyphs. CJK.sty will extend
%     it for CJK glyphs.
%
\def\mule@verbatim{
  \addto@hook{\every@verbatim}{
    \renewcommand{\Thaiglue}{}
    \mule@def{61}{}}}
\ifx\CJK@verbatim \@undefined
  \def\CJK@verbatim{}
\fi

\def\CJKverbatim{
  \mule@verbatim
  \CJK@verbatim}


% here comes our special include command which will load <file>.cjk
%     instead of <file>.tex

\def\CJKinclude#1{
  \relax

  \ifnum\@auxout = \@partaux
    \@latex@error{\string\CJKinclude\space cannot be nested}
    \@eha
  \else
    \CJK@include#1 %
  \fi
}

\def\CJK@include#1 {
  \clearpage

  \if@filesw
    \immediate\write\@mainaux{\string\@input{#1.aux}}
  \fi

  \@tempswatrue

  \if@partsw
    \@tempswafalse
    \edef\reserved@b{#1}
    \@for\reserved@a:=\@partlist\do
      {\ifx\reserved@a \reserved@b
         \@tempswatrue
       \fi
      }
  \fi

  \if@tempswa
    \let\@auxout\@partaux
    \if@filesw
      \immediate\openout\@partaux #1.aux
      \immediate\write\@partaux{\relax}
    \fi
    \@input@{#1.cjk}
    \clearpage
    \@writeckpt{#1}
    \if@filesw
      \immediate\closeout\@partaux
    \fi
  \else
    \deadcycles\z@
    \@nameuse{cp@#1}
  \fi

  \let\@auxout\@mainaux
}


% the same for the bibliography

\def\CJKbibliography#1{
  \if@filesw
    \immediate\write\@auxout{\string\bibdata{#1-cjk}}%
  \fi
  \@input@{\jobname.bbl}
}


% here our special input command -- cjk-enc.el will scan files included with
% \CJKinput, but not with \input.
%
% We only want the syntax form of \input with braces around the parameter.
% If no file name extension is given, `cjk' is used.

\def\CJKinput#1{
  \filename@parse{#1}
  \ifx\filename@ext \relax
    \def\filename@ext{cjk}
  \fi
  \InputIfFileExists{\filename@area\filename@base.\filename@ext}
    {}
    {\edef\reserved@a{
       \noexpand\@missingfileerror
         {\filename@area\filename@base}
         {\filename@ext}}
     \reserved@a}}


\endlinechar `\^^M
\makeatother
\endinput