Re: [babel] feature request - tangle-and-evaluate-tangled-file

[Rainer M Krug <r.m.krug@gmail.com>]

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Hi Eric


On 21/07/2010 00:41, Eric Schulte wrote:
> Hi Rainer,
> 
> I see the problem.  When ess-load-file is called an even number of
> times, it results in flip-flopped buffers.  I'm not sure of a good

Thanks for the clarification.

> solution here, aside from possibly tangling to a 3rd file, e.g.
> 
> #+begin_src R :tangle /tmp/nothing.R
>  y <- 9
> #+end_src
> 
> to ensure a good final balance.  Alternately you could try wrapping the
> ess-load-file call in save-window-excursion, which will inhibit it's
> ability to change buffers -- and result in the *R* window taking over
> your frame.
> 
> #+begin_src emacs-lisp :results silent :tangle no
>   (add-hook 'org-babel-post-tangle-hook
>             (lambda () (save-window-excursion (ess-load-file (buffer-file-name)))))
> #+end_src
> 
> Sorry I can't be of more help.

No problem - now I know where the problem is sitting and I might be able
to work around it.

Just an idea: if I could put an if statement in the hook, so that only
when the buffer-file-name is a specific name, ess-load-file is called, I
assume that it should work?
I'll try that one out as well.

Cheers and thanks,

Rainer


> 
> Best -- Eric
> 
> Rainer M Krug <r.m.krug@gmail.com> writes:
> 
>> Hi Eric
>>
>> I just discovered a "switching of buffers" when tangling the following
>> org file with the new org-babel-post-tangle-hook.
>>
>> Otherwise it is working perfectly now.
>>
>>
>> #############################################
>> ** tangle R and load
>>   :PROPERTIES:
>>   :tangle:   to-load.r
>>   :END:
>>
>> evaluate this
>> #+begin_src emacs-lisp :results silent :tangle no
>>   (add-hook 'org-babel-post-tangle-hook
>>             (lambda () (ess-load-file (buffer-file-name))))
>> #+end_src
>>
>> then tangle
>>
>> #+begin_src R :comments yes
>>  x <- 8
>> #+end_src
>> t
>> #+begin_src R
>>  y <- 9
>> #+end_src
>>
>> #+begin_src R :tangle file2.R
>>  y <- 9
>> #+end_src
>>
>> A second buffer will open with the R session.
>> If you tangle a second time, these buffers are switching, i.e. where the
>> .org buffer was is the R buffer and vice-versa.
>> #############################################


- -- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)

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