Re: Help on org-export-filter-link-functions

[John Kitchin <jkitchin@andrew.cmu.edu>]

Daimrod <daimrod@gmail.com> writes:

Why don't you just define how the link should be exported in your link
definition?

for example:
https://github.com/jkitchin/jmax/blob/master/org/org-ref.org#the-links

You can see a link that is defined, with different export formats for
different backends.

I am intrigued by your function! It does not seem to work for all types
of links though, for example I tried on on some file links,
e.g. file:bib.bib, and [[file.bib]], but these fall in the (t data)
case. [[file:bib.bib][bibliography]] on the other hand gets handled and
you can access the element properties. 

I tried a similar approach on a table, but it did not work as I
expected. Apparently the next property change puts you in a table-cell,
rather than the parent table.

I too am wondering if there is a defined way to get to the element
properties within a filter function. For example, in this post
http://kitchingroup.cheme.cmu.edu/blog/2014/09/22/Showing-what-data-went-into-a-code-block-on-export/
I concocted a preprocess scheme to get a list of table names, and then a
filter function to put the names in the export on each table. It would
be much more elegant to get it directly from the table element somehow.




> Hi,
>
> I've wrote a simple filter to customize how links are exported in
> latex:
>
> #+BEGIN_SRC
> (defun dmd--latex-bib-link-filter (data backend info)
>   "Convert a bib link to a citation (e.g. bib:foo93 -> \cite{foo93})."
>   (let* ((beg (next-property-change 0 data))
>          (link (if beg (get-text-property beg :parent data))))
>     (cond ((and link
>                 (org-export-derived-backend-p backend 'latex)
>                 (string= (org-element-property :type link) "bib"))
>            (format "\\cite{%s}" (org-element-property :path link)))
>           ((and link
>                 (org-export-derived-backend-p backend 'latex)
>                 (string= (org-element-property :type link) "file")
>                 (string= (org-element-property :path link) "~/.bib.bib"))
>            (format "\\cite{%s}" (org-element-property :search-option link)))
>           (t data))))
> #+END_SRC
>
> And I was wondering whether there is an easier way to retrieve the org
> properties stored in the text properties of DATA.
>
> Best,

-- 
-----------------------------------
John Kitchin
Professor
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
http://kitchingroup.cheme.cmu.edu