From: "Eric Schulte" <schulte.eric@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 07:40:02 -0600 [thread overview]
Message-ID: <8739truerx.fsf@gmail.com> (raw)
In-Reply-To: <4C80B94B.702@gmail.com> (Rainer M. Krug's message of "Fri, 03 Sep 2010 11:00:59 +0200")
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
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
next prev parent reply other threads:[~2010-09-03 13:40 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 [this message]
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
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