Re: [Orgmode] [babel] Error with source block and variable on export - bug?

[Rainer M Krug]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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.

Cheers,

Rainer

> 
> Cheers -- Eric
> 
> Rainer M Krug <address@hidden> 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
South Africa

Tel:        +33 - (0)9 53 10 27 44
Cell:       +27 - (0)8 39 47 90 42
Fax (SA):   +27 - (0)8 65 16 27 82
Fax (D) :   +49 - (0)3 21 21 25 22 44
Fax (FR):   +33 - (0)9 58 10 27 44
email:      address@hidden

Skype:      RMkrug
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAkyBBv8ACgkQoYgNqgF2egpZegCghnia5yRBa/u2BBcXOXnQRhbL
fD8AnAzLJ86WhpGAxWXBjmG+pNWNOyC7
=BayG
-----END PGP SIGNATURE-----