%% md-make.tex  1992  tvz@Princeton.EDU
%%
%% Run Plain TeX or LaTeX on this file to create a macro file multido.tex
%% from multido.doc, stripped of comments.
%%
%% This is basically a take-off from F. Mittelbach's docstrip.tex
%%
%% This macros can be used for stripping comments from any TeX file.
%% Just change these two lines:
\def\outfile{multido.tex}
\def\infile{multido.doc}

\catcode`\@=11
\expandafter\ifx\csname @latexerr\endcsname\relax\else\let\end\@@end\fi

\newread\@infile
\newwrite\@outfile

\def\typeout{\immediate\write16}
\typeout{}
\typeout{Preparing to make stripped macro file \outfile.}

\immediate\openin1=\outfile\relax
\ifeof1\else
	\typeout{%
		File `\outfile' exists and will be overwritten if in current directory!!!}
\fi

\def\check@@OK#1#2\@nil{\ifx#1y\else\expandafter\end\fi}

\typeout{Make `\outfile'? (y=yes, n=no)}
\read16 to\OK
\expandafter\check@@OK\OK\@nil

\newif\ifflag

{\catcode`\%=12\gdef\%{%}}
\edef\@@percent{\%\%}

\def\process@line{\expandafter\process@@line\inline\relax\relax\@nil}
\def\process@@line#1#2#3\@nil{%
  \def\temp{#1}%
	\ifx\temp\%
	  \def\temp{#1#2}%
		\ifx\temp\@@percent\owrite\inline\fi
	\else
	  \owrite\inline
	\fi}

\def\owrite#1{\immediate\write\@outfile{#1}}

\def\mo#1{\catcode`#1=12\relax}
\def\sanitize{\mo\ \mo\\\mo\$\mo\&\mo\#\mo\^\mo\_\mo\%\mo\~\mo\}\mo\{}

\def\stripfile{%
  \begingroup
  \sanitize
  \endlinechar-1
  \flagtrue
  \loop
  \read\@infile to\inline
  \ifeof\@infile\flagfalse\fi
	\ifflag
  \process@line
  \repeat
  \endgroup}

\immediate\openout\@outfile\outfile\relax

\owrite{\%\% This is file `\outfile' generated on
  <\the\year/\the\month/\the\day>.}
\owrite{\%\% The original source file was `\infile'.}
\owrite{\%\%}

\immediate\openin\@infile\infile\relax
\stripfile
\immediate\closein\@infile

\owrite{\%\%}%
\owrite{\%\% End of file `\outfile'.}%
\immediate\closeout\@outfile

\end