Re: Re: [org-babel] How to tangle "org-mode" files?

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

Hi Dan,

Daniel Brunner <daniel@dbrunner.de> writes:

> Hi Dan,
>
> thanks for the advice. After the org-babel-add-interpreter I got another
> error message that org-babel-execute:org is not defined. 
>
> I then added (I took the code from org-babel-css.el) a 
>
> (defun org-babel-execute:org (body params)
>   "Execute a block of org code with org-babel. This function is calles by `org-babel-execute-src-block'."
>   (message "executing ORG source code block")
>   body)
>

I'm now using the following to tangle org-mode blocks, this will strip
all leading commas, and shouldn't cause any problems.

--8<---------------cut here---------------start------------->8---
(add-to-list 'org-babel-tangle-langs '("org" "org" nil t))
(org-babel-add-interpreter "org")
(defun org-babel-expand-body:org (body params &optional processed-params)
  (with-temp-buffer
    (insert body)
    (goto-char (point-min))
    (while (re-search-forward "^," nil t)
      (replace-match ""))
    (buffer-string)))
--8<---------------cut here---------------end--------------->8---

>
> and after that the tangle worked. But you're right: The remaining commas
> are not that helpful and my opinion would be too to strip them out. If I
> could help please let me know. 
>

If the above proves insufficient in some way please let me know, and we
can try some more complicated solutions.

Thanks -- Eric

>
> Best wishes,
>
>
> Daniel
>
> Dan Davison <davison@stats.ox.ac.uk> writes:
>
>> Daniel Brunner <daniel@dbrunner.de> writes:
>>
>>> Hi,
>>>
>>> I am testing some ideas with org-babel (which is really great work) and
>>> got the following problem: I want to put several org-mode source blocks
>>> in one org-mode file and tangle them afterwards. Therefore I produced
>>> the following a.org:
>>>
>>> -->8--
>>> #+begin_src org :tangle in-a.org
>>>   ,* Foo
>>>   ,** Bar
>>> #+end_src
>>> -->8--
>>>
>>> Then I thought I have to add "org" to the list of known tangle
>>> languages:
>>>
>>>> (add-to-list 'org-babel-tangle-langs '("org" "org"))
>>>
>>> And when I know try a org-babel-tangle for example with
>>>
>>>> (org-babel-tangle-file "a.org") 
>>>
>>> Nothing happens. 
>>>
>>> Can anybody help with what I am doing wrong? 
>>
>> Hi Daniel,
>>
>> Short answer: please add
>>
>> (org-babel-add-interpreter "org")
>>
>> Long answer: I think there is room for improvement in org-babel
>> here. For example, the protective commas are not stripped out on
>> tangling, but I feel that they should be. And we need to clarify in the
>> documentation when org-babel-add-interpreter is needed and when adding
>> to org-babel-tangle-langs is required. I'm adding this to our todo list.
>>
>> Best wishes,
>>
>> Dan
>>
>>
>>>
>>>
>>> Kind regards, Daniel
>>>
>>>
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>>
>>
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>
>
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