Output LaTeX fragments

[vibrog]

Add an option to write output without a LaTeX preamble, e.g. --tex-frag

[vibrog]

The LaTeX package combine can be used as a workaround,

\documentclass[11pt]{combine}
\begin{document}
\pagestyle{combine}
\begin{papers}
\import{doc1}
\import{doc2}
\end{papers}
\end{document}