From mboxrd@z Thu Jan  1 00:00:00 1970
From: John Kitchin <jkitchin@andrew.cmu.edu>
Subject: Re: Wrapping section within LaTeX environment
Date: Sun, 13 Dec 2015 20:39:17 -0500
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To: Xavier Garrido <xavier.garrido@gmail.com>
Cc: "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>

could you provide a brief example of what you want to happen?

i.e. are you looking for this:

* some heading :correction:
one line of content

to convert to this in LaTeX?

\begin{correction}
one line of content
\end{correction}


Xavier Garrido writes:

> Dear orgers,
>
> I would like to wrap a given org section between =\begin,\end= LaTeX
> environment. These sections are identified by a special tag :correction:
> and to initiate the =\begin= flag I have basically no problem by using
> the  org-export-filter-headline-function filter. The problem comes when
> I want to close the environment i.e. when another section starts. I have
> try this piece of code
>
> #+BEGIN_SRC emacs-lisp
>    (setq correction-flag nil)
>    (defun cpp-correction-headline (contents backend info)
>      (if (and (org-export-derived-backend-p backend 'latex)
>                 (string-match "\\`.*correction.*\n" (downcase contents)))
>          (progn
>            (setq correction-flag t)
>            (replace-match "\\\\begin{correction}" nil nil contents)
>            )
>        (when correction-flag
>          (setq correction-flag nil)
>          (concat "\\end{correction}" contents))
>        )
>      )
>    (add-to-list 'org-export-filter-headline-functions
> 'cpp-correction-headline)
> #+END_SRC
>
> but I get several =\end{correction}= in the produced LaTeX file.
> Actually this is much more a emacs-lisp related question since the
> boolean =correction-flag= seems not to work and I don't know why (of
> course I have very little knowledge in lisp). Can some emacs-lisp
> experts helps me understand why the above code just does not work.
>
> Thanks a lot,
> Xavier

--
Professor John Kitchin
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@johnkitchin
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