From: Rainer M Krug <r.m.krug@gmail.com>
To: R.M.Krug@gmail.com
Cc: emacs-orgmode <emacs-orgmode@gnu.org>
Subject: Re: [babel] Error with source block and variable on export - bug?
Date: Fri, 03 Sep 2010 16:48:36 +0200 [thread overview]
Message-ID: <4C810AC4.2000304@gmail.com> (raw)
In-Reply-To: <4C8106FF.3060707@gmail.com>
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On 03/09/10 16:32, Rainer M Krug wrote:
> On 03/09/10 15:40, Eric Schulte wrote:
>> Hi Rainer,
>
>> As part of the export process Org-mode copies the contents of the
>> Org-mode file to a temporary buffer in which the business of exportation
>> is performed. This temporary buffer is not associated with any file so
>> (buffer-file-name) returns nil, which is causing the problem you are
>> experiencing. I think the best solution would be to replace the call to
>> (buffer-file-name) with the actual name of the file, e.g.
>
>> #+begin_src sh :var file=(vc-working-revision "~/src/babel-dev/scraps.org") :exports results
>> echo $file Revision
>> #+end_src
>
> Hi Eric
>
> thanks a lot for the clarification - that makes perfect sense. I will do
> as suggested.
Thanks - it is working now.
But it is a little bit awkward to have the file name (incl. path)
somewhere in the document - can create some problems when renaming the
file or saving it somewhere else).
Is it possible to define it as a kind of variable (property?) in the
headers of the file and reference it in the org file later?
Rainer
>
> Cheers,
>
> Rainer
>
>
>> Cheers -- Eric
>
>> Rainer M Krug <r.m.krug@gmail.com> writes:
>
>>> Hi
>>>
>>> when I insert the following source block
>>>
>>> #+begin_src sh :exports results :var
>>> ver=(vc-working-revision(buffer-file-name))
>>> echo Revision $ver
>>> #+end_src
>>>
>>> into a svn (probably other VCs as well) registered file and execute it
>>> via C-c C-c, it gives me the revision:
>>>
>>> #+begin_src sh :exports results :var
>>> ver=(vc-working-revision(buffer-file-name))
>>> echo Revision $ver
>>> #+end_src
>>>
>>> #+results:
>>> : Revision 191
>>>
>>> So when exporting, I would expect that it also prints "Revision 191",
>>> but I get an error:
>>>
>>> vc-file-getprop: Wrong type argument: stringp, nil
>>>
>>> Tangling the file with :var ver=(vc-working-revision(buffer-file-name))
>>> as a header argument also works fine.
>>>
>>> As the evaluation works, I assume that is a bug somewhere?
>>>
>>> Cheers,
>>>
>>> Rainer
>
>
- --
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)
Centre of Excellence for Invasion Biology
Natural Sciences Building
Office Suite 2039
Stellenbosch University
Main Campus, Merriman Avenue
Stellenbosch
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Tel: +33 - (0)9 53 10 27 44
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email: Rainer@krugs.de
Skype: RMkrug
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next prev parent reply other threads:[~2010-09-03 14:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-03 9:00 [babel] Error with source block and variable on export - bug? Rainer M Krug
2010-09-03 13:40 ` Eric Schulte
2010-09-03 14:32 ` Rainer M Krug
2010-09-03 14:48 ` Rainer M Krug [this message]
2010-09-03 15:05 ` Eric Schulte
2010-09-03 17:51 ` Eric S Fraga
2010-09-04 15:05 ` Rainer M Krug
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