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From: "Sebastien Vauban" <wxhgmqzgwmuf-geNee64TY+gS+FvcfC7Uqw@public.gmane.org>
Subject: Re: add entries to *emphasis-alist
Date: Fri, 17 Aug 2012 21:01:00 +0200
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Hi Philipp,

Philipp Kroos wrote:
> is it still possible to add items to the emphasis alists?
> I'm preparing a presentation with orgmode/beamer and try to get a markup 
> for alert using '@'.
> According to some (old..) thread 
> (http://lists.gnu.org/archive/html/emacs-orgmode/2010-01/msg00592.html)
> I added an entry to org-emhasis-alist and
> org-export-latex-emphasis-alist, see below.
> Unfortunately, this is not working, '@noise@' is exported to '@noise@' 
> literally.
> I had a quick look at the source in org-latex.el and if I understand it 
> correctly, the fontification is done in org-export-latex-fontify 
> according to matches with org-emph-re, defined in org.el. But 
> org-emph-re doesn't match with '@'- consequently, the markup is ignored.  
>
> So do I have to redefine org-emph-re as well or is there any other trick?
> I'm using the current org from git.
>
> Thanks all!
>
>
> ;; this is how I add the entries to the lists
>   (setq org-emphasis-alist
>         (append org-emphasis-alist
>                 '(("@" org-warning "<b>" "</b>"))))
>   (setq org-export-latex-emphasis-alist
>         (append org-export-latex-emphasis-alist
>                 '(("@" "\\alert{%s}" nil))))
>
> ;; this is a minimal example
> #+LaTeX_CLASS: beamer
> #+LaTeX_CLASS_OPTIONS: [presentation]
> #+BEAMER_FRAME_LEVEL: 1
>
> * Testsection
> ** with some important @noise@

You have to make that customization *before* loading Org in your .emacs file.
Weird, never really understood why, but that's like that.

Best regards,
Seb

-- 
Sebastien Vauban