%%
%% This is file `switch.def',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% babel.dtx  (with options: `kernel')
%% Copyright 1989-1997 Johannes L. Braams and any individual authors
%% listed elsewhere in this file.  All rights reserved.
%% 
%% For further copyright information see any other copyright notices in
%% this file.
%% 
%% This file is part of the Babel system release 3.6.
%% --------------------------------------------------
%%   This system 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.
%% 
%%   For error reports concerning UNCHANGED versions of this file no
%%   more than one year old, see bugs.txt.
%% 
%%   Please do not request updates from me directly.  Primary
%%   distribution is through the CTAN archives.
%% 
%% 
%% IMPORTANT COPYRIGHT NOTICE:
%% 
%% You are NOT ALLOWED to distribute this file alone.
%% 
%% You are allowed to distribute this file under the condition that it
%% is distributed together with all the files listed in manifest.txt.
%% 
%% If you receive only some of these files from someone, complain!
%% 
%% Permission is granted to copy this file to another file with a
%% clearly different name and to customize the declarations in that
%% copy to serve the needs of your installation, provided that you
%% comply with the conditions in the file legal.txt from the LaTeX2e
%% distribution.
%% 
%% However, NO PERMISSION is granted to generate or to distribute a
%% modified version of this file under its original name.
%% 
%% You are NOT ALLOWED to change this file.
%% 
%% 
%% MODIFICATION ADVICE:
%% 
%% If you want to customize this file, it is best to make a copy of
%% the source file(s) from which it was produced.  Use a different
%% name for your copy(ies) and modify the copy(ies); this will ensure
%% that your modifications do not get overwritten when you install a
%% new release of the standard system.  You should also ensure that
%% your modified source file does not generate any modified file with
%% the same name as a standard file.
%% 
%% You can then easily distribute your modifications by distributing
%% the modified and renamed copy of the source file, taking care to
%% observe the conditions in legal.txt; this will ensure that other
%% users can safely use your modifications.
%% 
%% You will also need to produce your own, suitably named, .ins file to
%% control the generation of files from your source file; this file
%% should contain your own preambles for the files it generates, not
%% those in the standard .ins files.
%% 
%% The names of the source files used are shown above.
%%%\iffalse
%%%  @LaTeX-file{
%%%     author          = "Johannes L. Braams",
%%%     version         = "3.6h",
%%%     date            = "23 January 1997",
%%%     time            = "23:49:49 MET",
%%%     filename        = "babel.dtx",
%%%     address         = "Kooienswater 62
%%%                        The Netherlands",
%%%     telephone       = "(3179) 352 28 19",
%%%     FAX             = "(3170) 343 23 95",
%%%     checksum        = "20446 4113 18260 157597",
%%%     email           = "JLBraams@cistron.nl (Internet)",
%%%     codetable       = "ISO/ASCII",
%%%     keywords        = "babel",
%%%     supported       = "yes",
%%%     docstring       = "This file, babel.dtx contains the core of
%%%                        the babel system as it was described in
%%%                        TuGboat Volume 12 no 2 and Volume 14 no 1.
%%%
%%%                        The checksum field above contains a CRC-16
%%%                        checksum as the first value, followed by the
%%%                        equivalent of the standard UNIX wc (word
%%%                        count) utility output of lines, words, and
%%%                        characters.  This is produced by Robert
%%%                        Solovay's checksum utility.",
%%%      }
%%% \fi
%%
%% Copyright (C) 1989 -- 1997 by Johannes Braams,
%%                            TeXniek
%%                            all rights reserved.
%% Please report errors to: J.L. Braams
%%                          JLBraams@cistron.nl
\ifx\ProvidesFile\@undefined
  \def\ProvidesFile#1[#2 #3 #4]{%
    \wlog{#4 #3 <#2>}%
    }
\fi
\ProvidesFile{switch.def}
                [1997/01/23 v3.6h
      Babel language switching mechanism]
\ifx\AtBeginDocument\@undefined
  \input plain.def\relax
\fi
\expandafter\ifx\csname iflanguage\endcsname\relax \else
\expandafter\endinput
\fi
\ifx\language\@undefined
  \csname newcount\endcsname\language
\fi
\ifx\newlanguage\@undefined
  \csname newcount\endcsname\last@language
\else
  \countdef\last@language=19
\fi
\ifx\newlanguage\@undefined
  \def\addlanguage#1{%
    \global\advance\last@language \@ne
    \ifnum\last@language<\@cclvi
    \else
        \errmessage{No room for a new \string\language!}%
    \fi
    \global\chardef#1\last@language
    \wlog{\string#1 = \string\language\the\last@language}}
\else
  \def\addlanguage{\alloc@9\language\chardef\@cclvi}
\fi
\def\adddialect#1#2{%
    \global\chardef#1#2\relax
    \wlog{\string#1 = a dialect from \string\language#2}}
\def\iflanguage#1#2#3{%
  \expandafter\ifx\csname l@#1\endcsname\relax
    \@nolanerr{#1}%
  \else
    \ifnum\csname l@#1\endcsname=\language #2%
    \else#3\fi
  \fi}

\edef\selectlanguage{%
  \noexpand\protect
  \expandafter\noexpand\csname selectlanguage \endcsname
  }
\ifx\@undefined\protect\let\protect\relax\fi
\ifx\documentclass\@undefined
  \def\xstring{\string\string\string}
\else
  \let\xstring\string
\fi
\expandafter\def\csname selectlanguage \endcsname#1{%
  \edef\languagename{%
    \ifnum\escapechar=\expandafter`\string#1\@empty
    \else \string#1\@empty\fi}%
  \select@language{\languagename}%
  \if@filesw
    \protected@write\@auxout{}{\string\select@language{\languagename}}%
    \addtocontents{toc}{\xstring\select@language{\languagename}}%
    \addtocontents{lof}{\xstring\select@language{\languagename}}%
    \addtocontents{lot}{\xstring\select@language{\languagename}}%
  \fi}
\def\select@language#1{%
  \expandafter\ifx\csname date#1\endcsname\relax
    \@nolanerr{#1}%
  \else
    \language=\csname l@#1\endcsname\relax
    \originalTeX
    \expandafter\def\expandafter\originalTeX
        \expandafter{\csname noextras#1\endcsname
                     \let\originalTeX\@empty}%
    \languageshorthands{none}%
    \babel@beginsave
    \csname captions#1\endcsname
    \csname date#1\endcsname
    \csname extras#1\endcsname\relax
    \babel@savevariable\lefthyphenmin
    \babel@savevariable\righthyphenmin
    \expandafter\ifx\csname #1hyphenmins\endcsname\relax
      \lefthyphenmin\tw@\righthyphenmin\thr@@\relax
    \else
      \expandafter\expandafter\expandafter\set@hyphenmins
        \csname #1hyphenmins\endcsname\relax
    \fi
  \fi}
\long\def\otherlanguage#1{%
  \def\languagename{#1}%
  \csname selectlanguage \endcsname{#1}%
  \ignorespaces
  }
\long\def\endotherlanguage{%
  \originalTeX
  \global\@ignoretrue\ignorespaces
  }
\expandafter\def\csname otherlanguage*\endcsname#1{%
  \foreign@language{#1}%
  }
\expandafter\def\csname endotherlanguage*\endcsname{%
  \csname noextras\languagename\endcsname
  }
\def\foreignlanguage{\protect\csname foreignlanguage \endcsname}
\expandafter\def\csname foreignlanguage \endcsname#1#2{%
  \begingroup
    \foreign@language{#1}%
    #2%
    \csname noextras#1\endcsname
  \endgroup
  }
\def\foreign@language#1{%
  \def\languagename{#1}%
  \expandafter\ifx\csname l@#1\endcsname\relax
    \@nolanerr{#1}%
  \else
    \language=\csname l@#1\endcsname\relax
    \languageshorthands{none}%
    \csname extras#1\endcsname
    \expandafter\ifx\csname #1hyphenmins\endcsname\relax
      \lefthyphenmin\tw@\righthyphenmin\thr@@\relax
    \else
      \expandafter\expandafter\expandafter\set@hyphenmins
        \csname #1hyphenmins\endcsname\relax
    \fi
  \fi
  }
\def\set@hyphenmins#1#2{\lefthyphenmin#1\righthyphenmin#2}
\def\LdfInit{%
  \chardef\atcatcode=\catcode`\@
  \catcode`\@=11\relax
  \input babel.def\relax
  \catcode`\@=\atcatcode \let\atcatcode\relax
  \LdfInit}
\ifx\originalTeX\@undefined\let\originalTeX\@empty\fi
\ifx\babel@beginsave\@undefined\let\babel@beginsave\relax\fi
\ifx\PackageError\@undefined
  \def\@nolanerr#1{%
    \errhelp{Your command will be ignored, type <return> to proceed}%
    \errmessage{You haven't defined the language #1\space yet}}
  \def\@nopatterns#1{%
    \message{No hyphenation patterns were loaded for}
    \message{the language `#1'}
    \message{I will use the patterns loaded for \string\language=0
          instead}}
  \def\@activated#1{%
    \wlog{Package babel Info: Making #1 an active character}}
\else
  \newcommand*{\@nolanerr}[1]{%
    \PackageError{babel}%
                 {You haven't defined the language #1\space yet}%
        {Your command will be ignored, type <return> to proceed}}
  \newcommand*{\@nopatterns}[1]{%
    \PackageWarningNoLine{babel}%
        {No hyphenation patterns were loaded for\MessageBreak
          the language `#1'\MessageBreak
          I will use the patterns loaded for \string\language=0
          instead}}
  \newcommand*{\@activated}[1]{%
    \PackageInfo{babel}{%
      Making #1 an active character}}
\fi
%%
%% \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         \~}
\endinput
%%
%% End of file `switch.def'.
