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[Orgmode] Re: [BABEL] Editing dot blocks with org-exp-blocks

From: Chris Maier
Subject: [Orgmode] Re: [BABEL] Editing dot blocks with org-exp-blocks
Date: Wed, 9 Feb 2011 10:39:01 -0500

I fixed my problem... had to dig around in the source of ob-dot.el,
though, since it doesn't appear to be on the website [1].  There are
some additional undocumented header parameters that ob-dot adds to the
standard Babel params.

With org-exp-blocks you do this:

#+begin_dot foo.png -Tpng
... dot code ...

With plain old Babel, you do this:

#+begin_src dot :file foo.png :cmdline -Tpng
... dot code ...

Knowing this now, I'd argue for deprecating org-exp-blocks, too.

Now my question changes slightly.  With the src block configured as
above, I can export and execute the code fine, but when I type C-c '
to edit the Dot code in a separate buffer, it goes into fundamental
mode, even though I have graphviz-dot-mode [2] installed and working
fine.  I suspect it might be because it's called "graphviz-dot-mode"
instead of just "dot-mode" (that's just speculation on my part,

Is there a way to explicitly associate an major mode with a particular
kind of language block?


[1] http://orgmode.org/worg/org-contrib/babel/languages.html

On Wed, Feb 9, 2011 at 10:14 AM, Dan Davison <address@hidden> wrote:
> Eric S Fraga <address@hidden> writes:
>> Chris Maier <address@hidden> writes:
>>> The begin_dot is part of org-exp-blocks, as I understand it, and
>>> appears required to make it evaluate the Dot code, create the image
>>> file, and then incorporate that into the exported document (LaTeX,
>>> HTML, etc.)
>>> Thanks,
>>> Chris
>>> On Wed, Feb 9, 2011 at 3:56 AM, Eric S Fraga <address@hidden> wrote:
>>>> Chris Maier <address@hidden> writes:
>>>>> In "normal" Org code blocks (e.g. #+begin_src clojure .... #+end_src)
>>>>> it's possible to hit C-c ' and edit the block code in a separate
>>>>> buffer with the appropriate mode.  This doesn't appear to work when
>>>>> using org-exp-blocks to edit a "begin_dot" block.
>>>>> Is there a command to do this?
>>>> No idea but what about using #+begin_src dot ... #+end_src?
>>>> --
>>>> : Eric S Fraga (GnuPG: 0xC89193D8FFFCF67D) in Emacs
>>>> : using Org-mode version 7.4 (release_7.4.324.gca7a)
>> Yes, I know; I used to use begin_dot and begin_ditaa quite a bit.  My
>> understanding is that babel knows about dot and therefore provides the
>> same functionality, albeit in a different way,
> I vote for removing / deprecating the dot and ditaa functionality of
> org-exp-blocks.
>> possibly more confusing
>> but definitely more customisable and hence more powerful.  babel gives
>> you access to features such as fontification, mode specific editing,
>> caching.
>> I am not sure what the intended long term development for these special
>> export blocks might be?  org's long term growth (development of
>> features) is organic and responsive, not planned per se (and I mean this
>> in a positive way as planned software projects seldom achieve their
>> goals...)  so it may be that nobody can answer this question!
>> In any case, I didn't mean to imply that you cannot continue using these
>> specific export blocks or that they don't do the job they were intended
>> for.  Simply that maybe babel is the route to go if you want to be able
>> to use mode specific editing.

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