I'm writing an application, part of whose functionality is to generate LaTeX CVs, so I find myself in a situation where I have strings like
\begin{document}
\title{Papers by AUTHOR}
\author{}
\date{}
\maketitle
\begin{enumerate}
%% LIST OF PAPERS
%% Please comment out anything between here and the
%% first \item
%% Please send any updates or corrections to the list to
%% XXXEMAIL???XXX
%\usepackage[pdftex, ...
which I would like to populate with dynamic information, e.g. an email address. Due to the format of LaTeX itself, .format with the {email} syntax won't work, and neither will using a dictionary with the %(email)s syntax. Edit: in particular, strings like "\begin{document}" (a command in LaTeX) should be left literally as they are, without replacement from .format, and strings like "%%" (a comment in LaTeX) should also be left, without replacement from a populating dictionary. What's a reasonable way to do this?