From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <n.goaziou@gmail.com>
Subject: Re: new exporter drops :parameters ?
Date: Tue, 03 Jul 2012 11:16:16 +0200
Message-ID: <878vf1gq73.fsf@gmail.com>
References: <loom.20120703T053318-670@post.gmane.org>
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In-Reply-To: <loom.20120703T053318-670@post.gmane.org> (Charles Berry's
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To: Charles Berry <ccberry@ucsd.edu>
Cc: emacs-orgmode@gnu.org

Hello,

Charles Berry <ccberry@ucsd.edu> writes:

> I am trying to put together a derived backend that makes use of Src Block
> :parameters attribute.
>
> I can see that the header in a begin_src block is picked up by  
>
> org-element-src-block-parser, as it should be when I try it interactively 
>
> But not when I try
>
> M-: (org-export-to-buffer 'my-latex   "*latex out*") RET
>
> I'd really like to have access to the header elements.
>
> AFAICS :parameters is nowhere to be found when using
> org-export-to-buffer.

This is because src blocks are executed before buffer is parsed. You can
try to call `org-export-blocks-preprocess' on the following buffer
(associated to a file):

--8<---------------cut here---------------start------------->8---
  #+name: bblock
  #+BEGIN_SRC R :exports code :et-cetera
  rnorm(2)+1
  #+END_SRC
--8<---------------cut here---------------end--------------->8---

and see what is really parsed: the removal happens on the Babel side.

Depending on your needs, you may want to use ATTR_LATEX keyword instead.


Regards,

-- 
Nicolas Goaziou