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On 29/10/15 19:59, Aaron Ecay wrote:
> Hi Éibhear,
>
> Thanks for sending the example. I think it is not expected to
> work going forward because the lisp block relies on being able to
> pick up the value of ‘params’, which will not be possible now that
> org is moving to lexical binding. In general,
> org-babel-execute:foo are internal functions, so trying to trick
> them int working properly in an elisp code block is a bad idea.
>
> The emacs-lisp babel backend is special, so I can’t predict what
> the result would be of making it return the symbol nil instead of
> the string “nil.” (Though for the sake of consistency it ought to
> allow nil symbol returns.)
>
> On the balance, I recommend you do something like the following,
> using two code blocks (untested):
>
> ,---- | #+name: dot-code | #+begin_src emacs-lisp :results
> verbatim | (generate-dot-code) | #+end_src | | #+RESULTS: dot-code
> | : "your dot code will appear here" | | #+begin_src dot :file
> foo.png :var code=dot-code() | $code | #+end_src | | #+RESULTS: |
> [[file:foo.png]] `----
>
> Hope this helps,
>
Thanks Aaron.
The following works (":results raw" being the significant change):
,----
| #+name: dot-code
| #+begin_src emacs-lisp :results raw
| (generate-dot-code)
| #+end_src
|
| #+RESULTS: dot-code
|
| #+begin_src dot :file foo.png :var code=dot-code()
| $code
| #+end_src
|
| #+RESULTS:
| [[file:foo.png]]
`----
Éibhear
- --
Éibhear Ó hAnluain
Dublin, Ireland.
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