From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Richard <theonewiththeevillook@yahoo.fr>
Subject: Re: Loading several latex classes for ox-latex
Date: Wed, 10 Jul 2013 15:33:28 +0200
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In-Reply-To: <87wqoy4k8q.fsf@free.fr> (Julien Cubizolles's message of "Wed, 10
	Jul 2013 15:28:37 +0200")
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To: Julien Cubizolles <j.cubizolles@free.fr>
Cc: emacs-orgmode@gnu.org

Julien Cubizolles <j.cubizolles@free.fr> writes:
> I tried the following:
> --8<---------------cut here---------------start------------->8---
> (eval-after-load 'ox-latex
>   (progn '(add-to-list 'org-latex-classes
> 		       '("mpsi_beamer" "\\documentclass{mpsi_beamer}\n [NO-DEFAULT-PACKAGES]"
> 			 ("\\section{%s}" . "\\section*{%s}")
> 			 ("\\subsection{%s}" . "\\subsection*{%s}")
> 			 ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
> 			 ))
> 	 '(add-to-list 'org-latex-classes 
> 		       '("mpsi" "\\documentclass[cours,Version,colonne]{mpsi}"
> 			 ("\\section{%s}" . "\\section*{%s}")
> 			 ("\\subsection{%s}" . "\\subsection*{%s}")
> 			 ))
> 	 ))
> --8<---------------cut here---------------end--------------->8---
>
> but only the second one (mpsi) is loaded.

that's because your (progn) is unquoted and thus evaluated at the same
time as eval-after-load, i.e. it returns its last value (which is the
second add-to-list form) and that is what is being added to the
eval-after-load list. What you want is the whole (progn) added there, so
an easy fix probably is to say '(progn ...) *and* remove the quotes
around the calls to add-to-list.

-- 
Nico.