From mboxrd@z Thu Jan  1 00:00:00 1970
From: Greg Minshall <minshall@umich.edu>
Subject: Re: "runaway argument" exporting: * _is_?
Date: Mon, 29 Apr 2013 11:07:51 -0400
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To: Nicolas Goaziou <n.goaziou@gmail.com>
Cc: emacs-orgmode@gnu.org

Nicolas,

> Isn't it a LaTeX limitation? What would the correct LaTeX code be in
> that case?

this seems to be something in beamer rather than inside "vanilla" latex.

for example, the following foo.tex file fails:
----
\documentclass{beamer}
\begin{document}

\section{\underline{is}?}
\end{document}
----

but, changing to \documentclass{article} makes things work.

i'm not a beamer expert, so i can't say what is going on.

cheers, Greg