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% Makes a landscape listing of one or more files
% Typical usage:
% tex llist *.c \\end
\def\grabfile#1 {\setbox0=\lastbox\endgraf\doit{#1}}
\everypar{\grabfile}
\font\filenamefont= cmtt8 scaled\magstep3
\font\headlinefont= cmr8
\font\listingfont= cmtex8
\font\eoffont= cmti8
\def\today{\ifcase\month\or
January\or February\or March\or April\or May\or June\or
July\or August\or September\or October\or November\or December\fi
\space\number\day, \number\year}
\newcount\m \newcount\n
\n=\time \divide\n 60 \m=-\n \multiply\m 60 \advance\m \time
\def\hours{\twodigits\n\twodigits\m}
\def\twodigits#1{\ifnum #1<10 0\fi \number#1}
\newlinechar=`@
\message{@\today\space at \hours}
\baselineskip=9pt
\medskipamount=4pt minus 1pt
\raggedbottom
\nopagenumbers
\chardef\other=12
\def\doit#1{\message{@Listing #1@}
\begingroup \everypar{} \frenchspacing
\headline{\ifright \headlinefont \hfill Page \folio
\else\filenamefont#1\quad\headlinefont \today\ at \hours\hfill \fi}
\def\do##1{\catcode`##1=\other}\dospecials
\catcode127=\other \catcode9=\other \catcode12=\other
\parindent 0pt \parfillskip=0pt plus 1fil minus .8in
\everypar{\hangindent 1in} \rightskip=0pt plus 2in
\def\par{\ifvmode\penalty-50\medskip\else\endgraf\fi}
\listingfont \obeylines \obeyspaces \global\pageno=1
\input #1 {\eoffont(end of\/ file)}\endgraf\vfill\eject
\ifright\null\vfill\eject\fi\endgroup}
{\obeyspaces\global\let =\ }
\catcode`\_=\other % allow _ in file names
\hsize=4.6truein
\vsize=7truein
\hoffset=-.5truein
\voffset=-.2truein
\newif\ifright
\newbox\lefthalf
\output{\ifright
\shipout\hbox{\hbox to5.5in{\box\lefthalf\hss}%
\vbox{\makeheadline\pagebody\makefootline}}
\advancepageno\global\rightfalse
\else\global\setbox\lefthalf\vbox{\makeheadline\pagebody\makefootline}
\global\righttrue\fi}
\special{landscape}
% A tab (^^I) prints as lowercase gamma.
% Character ^^M could be made visible, with a bit of work;
% at present, it's indistinguishable from newline (^^J).
% You can get up to 91 characters on a line without an overfull box.
% (But lines with more than 84 characters will be clipped, if they
% appear on a righthand halfpage.)
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