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From: cberry@tajo.ucsd.edu
To: emacs-orgmode@gnu.org
Subject: Re: new exporter, conditional options according to backend
Date: Fri, 25 Jan 2013 09:37:21 -0800
Message-ID: <87ip6l2mge.fsf@tajo.ucsd.edu> (raw)
In-Reply-To: <87sj5w23ia.fsf@gmail.com>

Nicolas Goaziou <n.goaziou@gmail.com> writes:

> Hello,
>
> Ezequiel Birman <stormwatch@espiga4.com.ar> writes:
>
>> Is it possible to write something like this with the new exporter?
>>
>> #+OPTIONS: (if (and (boundp 'org-export-current-backend) (eq org-export-current-backend 'e-beamer)) "H:1" "H:3")
>
> There is no `org-export-current-backend' in the new exporter. Besides,
> what you want is the default behaviour (see `org-e-beamer-frame-level'
> variable).

'backend' is in the scope of transcoding functions like
inline-src-block.

I am currently taking advantage of this, but it is a shortcut rather
than a necessity. 

Is your advice "Don't do that" ?

Chuck
>
>> From what I read in org-export.el the backend is stored in a plist, not
>> sure how to get it's value when exporting.
>>
>> Or, maybe I need to write a filter function to be run from
>> org-export-before-process-hook?
>
> Filters are different from hook. A function in a hook operates on an Org
> buffer. A filter function operates either on a string in output syntax
> or on the parse tree.
>
> If, for some reason, you want to modify export options "on the fly", you
> could create a filter function for parse tree, and modify options plist
> from it:
>
> #+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)
>
> (add-to-list 'org-export-filter-parse-tree-functions
>              'my-options-change-fun)
> #+end_src
>
>
> Regards,

  parent reply	other threads:[~2013-01-25 17:37 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-18 15:47 Ezequiel Birman
2013-01-19 22:48 ` Nicolas Goaziou
2013-01-20  4:38   ` Ezequiel Birman
2013-01-20  5:35   ` Jambunathan K
2013-01-20  9:28     ` Nicolas Goaziou
2013-01-20 16:22       ` Jambunathan K
2013-01-28  7:12         ` Nicolas Goaziou
2013-01-24 20:32   ` Andreas Leha
2013-01-25 13:23     ` Nicolas Goaziou
2013-01-25 17:37   ` cberry [this message]
2013-01-25 17:50     ` Nicolas Goaziou

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