%Date: Mon, 14 Dec 87 15:10:52 pst
%From: lamport@src.dec.com (Leslie Lamport)
%Subject: New LaTeX envirinment
%
%I've received numerous requests for a LaTeX environment that worked
%like `verbatim' except allowed embedded commands, such as font-changing
%and \input commands.  I finally got tired of repeating my advice on how
%to roll your own and wrote one.  It's contained in the following
%document-style-option file.  Just cut out the following and put it into
%the file alltt.sty.  The document-style option `alltt' will then
%define the `alltt' environment, which is described in the comments below.
%
%Please let me know if you find any bugs in it.  I trust it will find
%its way into the document-style repository; I probably won't make
%it part of the standard LaTeX distribution.
%
%
%%%%%%%%%%%%%%%%%%%%%%% file alltt.sty %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ALLTT DOCUMENT-STYLE OPTION - released 17 December 1987
%    for LaTeX version 2.09
% Copyright (C) 1987 by Leslie Lamport

% Defines the `alltt' environment, which is like the `verbatim'
% environment except that `\', `\{', and `\}' have their usual meanings.
% Thus, other commands and environemnts can appear within an `alltt'
% environment.  Here are some things you may want to do in an `alltt'
% environment:
% 
% * Change fonts--e.g., by typing `{\em empasized text\/}'.
% 
% * Insert text from a file foo.tex by typing `input{foo}'.  Beware that
%   each <return> stars a new line, so if foo.tex ends with a <return>
%   you can wind up with an extra blank line if you're not careful.
% 
% * Insert a math formula.  Note that `$' just produces a dollar sign,
%   so you'll have to type `\(...\)' or `\[...\]'.  Also, `^' and `_'
%   just produce their characters; use `\sp' or `\sb' for super- and
%   subscripts, as in `\(x\sp{2}\)'.

\def\docspecials{\do\ \do\$\do\&%
  \do\#\do\^\do\^^K\do\_\do\^^A\do\%\do\~}

\def\alltt{\trivlist \item[]\if@minipage\else\vskip\parskip\fi
\leftskip\@totalleftmargin\rightskip\z@
\parindent\z@\parfillskip\@flushglue\parskip\z@
\@tempswafalse \def\par{\if@tempswa\hbox{}\fi\@tempswatrue\@@par}
\obeylines \tt \catcode``=13 \@noligs \let\do\@makeother \docspecials
 \frenchspacing\@vobeyspaces}

\let\endalltt=\endtrivlist