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% F I L E V E R B A T I M . T E X
%
% THIS SET OF MACROs IS TAKEN FROM D.E.K.'s TeXBook
% AND PROVIDES AN EASY WAY OF TYPESETTING TEXTS VERBATIM:
%
% 1. \verbatim<character><text without that character><character>
% causes the text to be set verbatim using \tt font;
% 2. if the text uses up all the alphabet, \doubleverbatim macro
% can be used instead; this is similar to the previous one but
% a pair of characters is now used as a delimiter;
% 3. in case of emergency \tripleverbatim macro may be of help...
%
%---------------------------------------------
\def\uncatcodespecials % see D.E.K., pp. 344 and 380
{\def\do##1{\catcode`##1=12}\dospecials}%
%---------------------------------------------
{\catcode`\^^I=\active \gdef^^I{\ \ \ \ }% TAB character is replaced by
% 4 spaces; it is better than
% nothing, but it does not mimic
% true tabbing satisfactorily---maybe
% some nice day...
\catcode`\`=\active\gdef`{\relax\lq}}% this line inhibits Spanish
% ligatures ?` and !` of \tt font
\def\setupverbatim % see D.E.K., p. 381
{\tt %
\spaceskip=0pt \xspaceskip=0pt % just in case...
\catcode`\^^I=\active %
\catcode`\`=\active %
\def\par{\leavevmode\endgraf}% this causes that empty lines aren't
% skipped
\obeylines \uncatcodespecials \obeyspaces}%
{\obeyspaces \global\let =\ }% this causes that leading blanks aren't
% skipped; cf. also def's of \space, \endgraf,
% \lq, \obeyspaces, and \obeylines,
% D.E.K., pp. 351--352
%---------------------------------------------
% see D.E.K., p. 382
\def\doverbatim#1{\def\next##1#1{##1\endgroup}\next}%
\def\verbatim{\begingroup\setupverbatim\doverbatim}%
%----------
\def\dodoubleverbatim#1#2{\def\next##1#1#2{##1\endgroup}\next}%
\def\doubleverbatim{\begingroup\setupverbatim\dodoubleverbatim}%
%----------
\def\dotripleverbatim#1#2#3{\def\next##1#1#2#3{##1\endgroup}\next}%
\def\tripleverbatim{\begingroup\setupverbatim\dotripleverbatim}%
%---------------------------------------------
\endinput
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