[babel] Questions about export and :var. Possible bug.

[babel] Questions about export and :var. Possible bug.

[Nicolas Goaziou]

Hello.

I tried to export something like this (git head) :

#+begin_src R :var num=3 :exports results
runif(n=num, min=0, max=1)
#+end_src

While it is fine when run with C-c C-c, I get the following error
when trying to export the file :

progn: reference '3' not found in this buffer

So I investigated a bit and found something odd :
- `org-babel-exp-results' adds `org-current-export-file' to any
  assignment, even if num=/path/to/file/exported:3 doesn't make sense;
- `org-babel-resolve-reference' doesn't filter out bad references like
  this and throws the error above.

So my questions are :
- do we really need the "reference '%s' not found in this buffer" error, as it only means
  %s was a literal value ?
- or is it better to modify org-babel-exp-results to check the sanity
  of the references it creates so that it doesn't add that reference
  to the original file ?

- Nicolas

Re: [babel] Questions about export and :var. Possible bug.

[Eric Schulte]

Hi Nicolas,

Thanks for pointing out this error, and for the debugging work.

This has been fixed by changing the `org-babel-exp-results' function so
that it only prefixes actual references (i.e. not literal values, which
is checked using the `org-babel-ref-literal' function).

Thanks! -- Eric

Nicolas Goaziou <n.goaziou@gmail.com> writes:

> Hello.
>
> I tried to export something like this (git head) :
>
> #+begin_src R :var num=3 :exports results
> runif(n=num, min=0, max=1)
> #+end_src
>
> While it is fine when run with C-c C-c, I get the following error
> when trying to export the file :
>
> progn: reference '3' not found in this buffer
>
> So I investigated a bit and found something odd :
> - `org-babel-exp-results' adds `org-current-export-file' to any
>   assignment, even if num=/path/to/file/exported:3 doesn't make sense;
> - `org-babel-resolve-reference' doesn't filter out bad references like
>   this and throws the error above.
>
> So my questions are :
> - do we really need the "reference '%s' not found in this buffer" error, as it only means
>   %s was a literal value ?
> - or is it better to modify org-babel-exp-results to check the sanity
>   of the references it creates so that it doesn't add that reference
>   to the original file ?
>
> - Nicolas
>
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