Re: modular block exportation was patch [Feature Addition] exporting comments on org files to html

["Eric Schulte" <schulte.eric@gmail.com>]

Carsten Dominik <dominik@science.uva.nl> writes:

> Hi Eric,
>
> I think this interesting functionality could at least initially
> be implemented as a add-on, hooking into `org-export-preprocess-hook'.
> This hook is called before Org looks at any of the blocks, so the hook
> could remove blocks or format them and replace them with finished
> HTML (in the case of HTML export....) in a BEGIN_HTML ... END_HTML
> block.
>

Hi Carsten,

Thanks for the pointer.  I was able to implement generic block
pre-processing on export using the `org-export-preprocess-hook' you
mentioned.  The resulting org-mode add-on is hosted at

http://github.com/eschulte/org-contrib/tree/master/org-exp-blocks.el

Currently it implements the comment processing I was after, and ditaa
image creation.  I think that it could also be used to implement the
src-code, block-quote, and verse exportation currently implemented in
org-exp.el.

Thanks for the advice, I think this is much better than my initial
comment exportation utility. -- Eric

>
> - Carsten
>
>
> On Nov 7, 2008, at 8:02 PM, Eric Schulte wrote:
>
>> Hi,
>>
>> This has had me thinking about the exportation of blocks in general.
>> I
>> think it makes sense to pull block exportation out into it's own
>> component both for simplicity and for ease of code-reading, hacking,
>> and
>> customization.
>>
>> with a set of blocks of forms like...
>>
>> #+begin_html
>>
>> #+begin_src
>>
>> #+begin_comment
>>
>> #+begin_example
>>
>> etc...
>>
>> We could have an alist in which we look up the type of the block, and
>> call the appropriate function to handle exportation.  Users could then
>> add their own custom block export functions to this list.
>>
>> The optional exportation of these blocks could then be controlled by a
>> single #+option variable which takes a list of blocks not to export.
>> For example
>>
>> #+OPTION   hidden_blocks:comment,src
>>
>> I'd be interested to hear anyone's thoughts on this.  If it sounds
>> like
>> a good idea I'd be happy to take a stab at implementation.
>>
>> Cheers -- Eric