From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rasmus <rasmus@gmx.us>
Subject: Re: latex environment inside math mode problem
Date: Tue, 20 Jan 2015 12:10:51 +0100
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References: <878ugypcwf.wl-MarkoSchuetz@web.de>
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To: emacs-orgmode@gnu.org
Cc: mail@nicolasgoaziou.fr

Hi,

Marko Schütz Schmuck <MarkoSchuetz@web.de> writes:

> the new exporter does not seem to handle \begin/\end inside \( ... \).
>
> If the org file contains
>
>     \(f =
>       \begin{cases}
>       t & 1\\
>       f & 2\\
>       \end{cases}
>     \)

This will also work:

\(f = \begin{cases}
      t & 1\\
      f & 2\\
      \end{cases}\)


Technically, I think what happens is that latex-fragments are "objects" in
the lingo of org-element whereas environments are elements.  If you run
(org-element-latex-fragment-parser) at "\(f" it is indeed interpret
correctly as a latex-fragment.  Yet, the nested environment is recognized
as a latex-environment and it seems the former can't "hold" the latter.
Why the above work is because a latex-environment starts on its own line
(cf.  org-element--latex-begin-environment).

Nicolas will be able to tell if this is a feature or a bug.

—Rasmus

-- 
. . . The proofs are technical in nature and provides no real understanding