From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <n.goaziou@gmail.com>
Subject: Re: new exporter, conditional options according to backend
Date: Sun, 20 Jan 2013 10:28:46 +0100
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In-Reply-To: <874nic8lit.fsf@gmail.com> (Jambunathan K.'s message of "Sun, 20
	Jan 2013 11:05:06 +0530")
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To: Jambunathan K <kjambunathan@gmail.com>
Cc: Ezequiel Birman <stormwatch@espiga4.com.ar>, emacs-orgmode@gnu.org

Jambunathan K <kjambunathan@gmail.com> writes:

> Nicolas Goaziou <n.goaziou@gmail.com> writes:
>
>> #+begin_src emacs-lisp
>> (defun my-options-change-fun (tree backend info)
>>   (when (org-export-derived-backend-p backend 'e-beamer)
>>     (plist-put info :with-author nil))
>>   ;; Don't forget to return tree.
>>   tree)
>
> CAVEAT: plist-put can return a different list, at times.
>
> I don't know enough about implementation of `plist-put' to ascertain
> when it would return a new list.

Since the OP wants to modify the values of _existing properties_ I'm
quite sure the change will happen in place.


Regards,

-- 
Nicolas Goaziou