narrow.sty

% Settings to generate PDF for a narrow display (e.g. a smartphone).
% Copy this file to special-settings.sty to use it.

\usepackage[papersize={3.6in,4.8in},hmargin=0.1in,vmargin={0.1in,0.1in}]{geometry}  % page geometry

% Use "listings" package.  This lets us have automatic line breaking.
% In the future we might use syntax highlighting, but that's not necessary
% for now.
\usepackage{listings}
\lstset{
  basicstyle=\ttfamily\footnotesize,      % print size
  breaklines=true,                        % sets automatic line breaking
  breakatwhitespace=true,                 % sets if automatic breaks should only happen at whitespace
}

% Override definition of "verbatim" with a "listings" block.
% Reasons:
% 1. This provides *useful* text highlighting.
%    Text editors like vim know about verbatim, but not listings, so
%    directly replacing "\begin{verbatim" with "\begin{lstlisting}[breaklines]"
%    causes *all* text highlighting to go wrong once verbatim is
%    first used.
% 2. We really only need listings for the narrow case, so let's only
%    override it in that case.
% 3. This eliminates the need to change many lines in the .tex file.
%    That's not a *big* deal, but it's a minor bonus.

\let\verbatim\someundefinedcommand
\lstnewenvironment{verbatim}
{}{}