%^^A* copyright
% \iffalse
%
%   This program is part of the Frankenstein bundle for LaTeX2e.
%
%   Copyright (C) 1995 Matt Swift <swift@bu.edu>
%
%   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; if not, write to the Free Software
%   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
%
%^^A* to do
%
%^^A NOTE:  \DocInput will start reading after this \fi.
% \fi  
%
%^^A* checks
%
%^^A NOTE:  The character table, with two %'s, will get written to all files.
%% \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         \~}
%
% \CheckSum{33}
%
% \begin{abstract}
%   This package provides the commands \cs\itswitch, \cs\slswitch,
%   \cs\textitswitch, and \cs\textslswitch.
% \end{abstract}
%
% \part{Discussion}
%
% \DescribeMacro\itswitch \cs\itswitch calls \cs\itshape if the current font
%   is not slanted, and \cs\upshape if the current font is slanted.
%
% \DescribeMacro\slswitch \cs\slswitch calls \cs\slshape if the current font
%   is not slanted, and \cs\upshape if the current font is slanted.
%
% \DescribeMacro\textitswitch \cs\textitswitch\marg{text} sets its argument
%   with \cs\itshape if the current font is not slanted, or \cs\upshape if the
%   current font is slanted.
%
% \DescribeMacro\textslswitch \cs\textslswitch\marg{text} sets its argument
%   with \cs\slshape if the current font is not slanted, or \cs\upshape if the
%   current font is slanted.
%
% \StopEventually{}
%
% \part{Implementation}
%
% \section{Version control}
%
%  \begin{macro}{\fileinfo}
%  \begin{macro}{\fileversion}
%  \begin{macro}{\filedate}
%  \begin{macro}{\docdate}
%  \begin{macro}{\PPOptArg}
% These definitions must be the first ones in the file.
%    \begin{macrocode}
\def\fileinfo{slanted emphasis (Frankenstein's gait)}
\def\fileversion{v1.0}
\def\filedate{1996/03/25}
\def\docdate{1996/03/25}
\edef\PPOptArg {%
  \filedate\space \fileversion\space \fileinfo
}
%    \end{macrocode}
%  \end{macro}
%  \end{macro}
%  \end{macro}
%  \end{macro}
%  \end{macro}
%
% Stop right here if we're just loading the file's information, and don't want
% to load this code for typesetting its documentation (only makes sense for
% certain packages).  The |JuStLaAdInFoRmAtIoN| flag will be set by the
% documentation driver; the |DoXNeeDME| flag will be set in the
% \ext{dtx} file, and will appear above if it's set.
%    \begin{macrocode}
\makeatletter
\@ifundefined{JuStLoAdInFoRmAtIoN} {%
  }{%
  \@ifundefined{DoXNeeDME} {%
    }{%
    \usepackage{slemph}%
  }
  \makeatother
  \endinput
}
%    \end{macrocode}
%
% Now we check for \LaTeX2e and declare the package.
%    \begin{macrocode}
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{slemph}[\PPOptArg]
%    \end{macrocode}
%
% ^^A NOTE: We have to compensate for the above backslashes, which are not
% ^^A actually in the doctex file I work on.
%%
% \AddToCheckSum{24}
% 
% \makeatletter
%   \@ifundefined{DoXNeeDME} {} {\AddToCheckSum{2}}
% \makeatother
%
%
% \section{The switchers}
%
%  \begin{macro}{\itswitch}
%  \begin{macro}{\textitswitch}
%  \begin{macro}{\slswitch}
%  \begin{macro}{\textslswitch}
%  \begin{macro}{\em}
% \cs\itswitch is defined like the old \cs\em and \cs\slswitch is similar
% except it switches back and forth between the \cs\slshape and \cs\upshape
% shapes.
%    \begin{macrocode}
\DeclareRobustCommand\itswitch {%
  \@nomath\itswitch
  \ifdim \fontdimen\@ne\font > \z@
    \upshape 
  \else 
    \itshape
  \fi
}
\DeclareRobustCommand\slswitch {%
  \@nomath\slswitch
  \ifdim \fontdimen\@ne\font > \z@
    \upshape
  \else
    \slshape
  \fi
}
\DeclareTextFontCommand\textitswitch\itswitch
\DeclareTextFontCommand\textslswitch\slswitch
%    \end{macrocode}
%  \end{macro}
%  \end{macro}
%  \end{macro}
%  \end{macro}
%  \end{macro}
%
% \section{Configuration}
%
% Load a configuration file.
%    \begin{macrocode}
\InputIfFileExists{slemph.cfg}{}{}
%    \end{macrocode}
%
%  The contents of the distributed configuration file are below.
%
% \InputIfFileExists{slemph.cfg}{}{}
%
% \Finale