Manual does not list :results output graphics as babel header arg

Aloha all,

The attached patch changes the link to the languages supported by babel
from a directory listing to the Worg page that uses a table to link to
the language-specific documentation pages.  It was suggested by John
Hendy.

All the best,
Tom
John Hendy <jw.hendy@gmail.com> writes:

> On Tue, Jul 10, 2012 at 10:19 AM, Thomas S. Dye <tsd@tsdye.com> wrote:
>> John Hendy <jw.hendy@gmail.com> writes:
>>
>>> On Mon, Jul 9, 2012 at 7:35 PM, Thomas S. Dye <tsd@tsdye.com> wrote:
>>>> John Hendy <jw.hendy@gmail.com> writes:
>>>>
>>>>> I have typically outputted graphics from R via tikzDevice manually,
>>>>> but gave my first whirl to just including things via the :file
>>>>> argument in my block header. In the process, I was trying to get this
>>>>> to work and found I needed to use:
>>>>>
>>>>> -----
>>>>> :results output graphics
>>>>> -----
>>>>>
>>>>> This is listed on Worg ob-R-doc:
>>>>> - http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-R.html#sec-4-3
>>>>>
>>>>> But I didn't originally know about it, as it's not a listed header
>>>>> argument in the manual, which is where I check since they're all
>>>>> listed in one place:
>>>>> - http://orgmode.org/manual/results.html#results
>>>>>
>>>>> Does the manual only list universal babel header arguments and R is in
>>>>> a subset of ones using =:results output graphics= or should it be
>>>>> there?
>>>>>
>>>>
>>>> Hi John,
>>>>
>>>> The babel header arguments are implemented at two levels.
>>>>
>>>> There are general babel arguments that apply to all the supported
>>>> languages.  These are described in the manual.
>>>>
>>>> It is also possible for the individual language implementations to
>>>> define their own header arguments.  R is a good example, where the very
>>>> many arguments to the various R output devices are built into ob-R.el.
>>>> These language specific header arguments are not described in the
>>>> manual, but instead appear in the language specific documentation on
>>>> Worg.
>>>>
>>>> Re: your specific question about :results output graphics.  I believe
>>>> this is an R specific header argument and that it is described in the
>>>> appropriate place in the documentation on Worg (see lines 68 and 230
>>>> of ob-R.el).
>>>>
>>>> The manual is not a one-stop source for answers to all Babel questions.
>>>> Recourse to the language specific documentation is typically necessary,
>>>> which is why it would be great if someone could find time to work up
>>>> documentation for the 20 or so languages that still lack it :)
>>>
>>> Thanks for the clarification and that answers the question. This was a
>>> specific header argument for R. Perhaps the manual could link to this
>>> page?
>>> - http://orgmode.org/worg/org-contrib/babel/languages.html
>>>
>>> Maybe with a diddy: "Some languages feature their own unique header
>>> arguments. The above document only universal, system wide Babel header
>>> arguments and one should consult the specific language page on Worg
>>> for additional features."
>>>
>>> Just a thought.
>>
>> Hi John,
>>
>> Thanks for this thought, which is indeed reasonable.  I thought the
>> manual might lack this structure, but when I went back to the
>> manual I found that
>> http://orgmode.org/manual/Specific-header-arguments.html#Specific-header-arguments
>> has this at the bottom of the page: "Additional header arguments are
>> defined on a language-specific basis, see Languages", where "Languages"
>> is a link to another manual page, one with a table of supported
>> languages and a link to the Worg page you cite.
>>
>
> Wow. You see only what you look for. :embarrassed:
>
>> The language is a bit different than your proposal, but the path seems
>> clear enough to me.
>
> Technically the path points to
> http://orgmode.org/worg/org-contrib/babel/languages/; I'd point it to
> http://orgmode.org/worg/org-contrib/babel/languages.html as it looks
> cleaner vs. just looking at the directory of .html files. Either
> way... the manual totally does it's job and I missed it!
>
> Thanks for bearing with me!
> John
>
>>
>> Of course, there is still the issue of the languages that lack
>> language-specific documentation :)
>>
>> All the best,
>> Tom
>>
>> --
>> T.S. Dye & Colleagues, Archaeologists
>> 735 Bishop St, Suite 315, Honolulu, HI 96813
>> Tel: 808-529-0866, Fax: 808-529-0884
>> http://www.tsdye.com

>From 0438f0ae1e23321dbacd0666119205985959433e Mon Sep 17 00:00:00 2001
From: Thomas Dye <tsd@tsdye.com>
Date: Tue, 10 Jul 2012 07:12:13 -1000
Subject: [PATCH] Changed babel languages link following a suggestion by John
 Hendy

doc/org.texi

@@ -12940,7 +12940,7 @@ Code blocks in the following languages are supported.
 
 Language-specific documentation is available for some languages.  If
 available, it can be found at
-@uref{http://orgmode.org/worg/org-contrib/babel/languages}.
+@uref{http://orgmode.org/worg/org-contrib/babel/languages.html}.
 
 The @code{org-babel-load-languages} controls which languages are enabled for
 evaluation (by default only @code{emacs-lisp} is enabled).  This variable can