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

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

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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)

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