From: Rainer M Krug <r.m.krug@gmail.com>
To: e.fraga@ucl.ac.uk
Cc: Eric S Fraga <ucecesf@ucl.ac.uk>, emacs-orgmode <emacs-orgmode@gnu.org>
Subject: Re: [babel] Error with source block and variable on export - bug?
Date: Sat, 04 Sep 2010 17:05:37 +0200 [thread overview]
Message-ID: <4C826041.6020000@gmail.com> (raw)
In-Reply-To: <8739tqpvep.wl%ucecesf@ucl.ac.uk>
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On 03/09/10 19:51, Eric S Fraga wrote:
> On Fri, 03 Sep 2010 09:05:24 -0600, "Eric Schulte" <schulte.eric@gmail.com> wrote:
>>
>> Rainer M Krug <r.m.krug@gmail.com> writes:
>>
>>> 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?
>>>
>>
>> Oh,
>>
>> I've just remembered that during export Org-mode saves this file-name
>> information in the temporary variable `org-current-export-file'.
>>
>> So the following will work, even though it relies upon undocumented
>> internals of Org-mode which could change at some point.
>>
>> #+begin_src sh :var file=(vc-working-revision (or (buffer-file-name) org-current-export-file)) :exports results
>> echo $file Revision
>> #+end_src
>>
>> Cheers -- Eric
>
> And this works very well with an inline src snippet (tested with git
> and RCS). Very nice!
Thanks a lot Eric F. - that inline syntax was also something I was
looking for - I'll put it into my document on Monday morning.
Cheers,
Rainer
>
> ,----
> | * revision control
> | The version of this file is
> | src_emacs-lisp{(vc-working-revision (or (buffer-file-name) org-current-: export-file))}.
> `----
>
> Thanks!
- --
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
South Africa
Tel: +33 - (0)9 53 10 27 44
Cell: +27 - (0)8 39 47 90 42
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Fax (FR): +33 - (0)9 58 10 27 44
email: Rainer@krugs.de
Skype: RMkrug
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prev parent reply other threads:[~2010-09-04 15:05 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
2010-09-03 15:05 ` Eric Schulte
2010-09-03 17:51 ` Eric S Fraga
2010-09-04 15:05 ` Rainer M Krug [this message]
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