* Please help with a filter
@ 2014-09-02 18:55 Rafael
2014-09-03 2:55 ` Charles Berry
0 siblings, 1 reply; 3+ messages in thread
From: Rafael @ 2014-09-02 18:55 UTC (permalink / raw)
To: Emacs-orgmode list
I want that the result of exporting to markdown the following two blocks
be identical:
#+begin_src org
#+BEGIN_MARKDOWN
<div class="sage">
<script type="text/x-sage">2+3</script>
</div>
#+END_MARKDOWN
#+BEGIN_SRC sage
2+3
#+END_SRC
#+end_src
I have tried the following, which seems similar to examples in the web,
and I think it should work, but it doesn't:
#+begin_src emacs-lisp
(defun org-octopress-src-block (contents backend info)
(when (eq backend 'md)
(let (
(lang (org-element-property :language info))
(value (org-element-property :value info)))
(message "Language is %s. Value is %s" lang value)
(when (eq lang "sage" )
(format
"<div class=\"sage\">
<script type=\"text/x-sage\">%s</script>
</div>\n"
value
))
))
)
(add-to-list 'org-export-filter-src-block-functions
'org-octopress-src-block)
#+end_src
My debugging message says: 'Language is nil. Value is nil', so I cannot
get the name of the language from the source code. What should I do to
get the filter to work?
Thanks in advance,
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Please help with a filter
2014-09-02 18:55 Please help with a filter Rafael
@ 2014-09-03 2:55 ` Charles Berry
2014-09-03 22:32 ` Rafael
0 siblings, 1 reply; 3+ messages in thread
From: Charles Berry @ 2014-09-03 2:55 UTC (permalink / raw)
To: emacs-orgmode
Rafael <rvf0068 <at> gmail.com> writes:
>
>
> I want that the result of exporting to markdown the following two blocks
> be identical:
Rafael,
You probably want a derived backend taking 'md as the parent.
You want to tool up a src-block transcoder.
Look at org-html-src-block (which is what markdown uses) and create
org-md-sage-src-block (say) based on that.
The :language property in `info' - the communication channel - is a human
language not a computer language. Confusingly, babel has an `info'
variable that has different contents.
Filters might be made to work, but it seems like more work than a
derived backend.
HTH,
Chuck
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Please help with a filter
2014-09-03 2:55 ` Charles Berry
@ 2014-09-03 22:32 ` Rafael
0 siblings, 0 replies; 3+ messages in thread
From: Rafael @ 2014-09-03 22:32 UTC (permalink / raw)
To: emacs-orgmode
Charles Berry <ccberry@ucsd.edu> writes:
> Rafael <rvf0068 <at> gmail.com> writes:
>
>> I want that the result of exporting to markdown the following two blocks
>> be identical:
>
>
> You probably want a derived backend taking 'md as the parent.
Yes, that's what I feared.. :) I thought I could delay creating a
derived backend for later, but I guess now is the time. Thanks for your
answer, it was helpful indeed.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2014-09-02 18:55 Please help with a filter Rafael
2014-09-03 2:55 ` Charles Berry
2014-09-03 22:32 ` Rafael
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