Re: [Orgmode] [babel] dot in pdf directly

[Eric Schulte]

Sebastian Rose <address@hidden> writes:

> andrea Crotti <address@hidden> writes:
>> Still a couple of questions, I found something here
>> in the newsgroup but nothing helped me...
>>
>> First, how many and where can I find all the possible
>>
>> #+begin_...?
>>
>> I mean why is
>> #+begin_dot and not
>>
>> #+begin_src dot?
>>
>> I would like to insert my dot info and on exporting getting a pdf with
>> embedded the generated eps, it would be great!
>>
>> I don't have very clear the grammar I can use in the #+begin_.. line,
>> is there a clear explanation somewhere?
>
>
> The difference is, 
>
>    #+begin_src mode-name
>
> just tells the exporter that the following block is a `mode-name' block,
> where mode-name == the name of the emacs mode you'd use to edit a file
> in that language.
>
> This handy if you want to edit the block's contents (C-c '). Eventually,
> the source code inside the block will be highlighted on export to
> XHTML. The mode is important then, too. Contents of blocks like this are
> exported verbatim.
>
>
>
>
> In contrast, blocks like
>
>    #+begin_ditaa
>
> will never export verbatim. Instead, the contents are treated specially
> or even send to an external program, that will create an image (e.g. -
> in most cases), that will in turn replace the block in the exported
> result.
>
>

The exception to the above is that *if* you have org-babel loaded, then
some begin_src blocks will become activated.  The source blocks
activated by org-babel are the contents of the variable
`org-babel-interpreters'.  They can be used to activate for example dot
blocks, and will then have the result of possibly evaluating dot blocks
on export in the same manner as org-exp-blocks.

The two separate mechanisms are confusion, but for now are necessary to
allow org-mode users to evaluate some simple block types (like dot) on
export without having to load up all of org-babel.

I hope the above isn't too confusing :) -- Eric

>
>   Sebastian
>
>
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