Dear Nick,

2014-07-21 12:19 GMT+02:00 Nick Dokos <ndokos@gmail.com>:

> I don't understand: what language are you trying to export to? My take
> was that you export the doc to latex/pdf/html and you tangle the code
> fragments to some arbitrary file (a file that can be fed to a prolog
> interpeter to be executed).
>

You have quite correctly undersood me.


>
> > This is a (lisp)programmers task. The usual proceeding would be to look
> > at the list of extisting ob-<language>.el files and pick a language that
> > is very similar to the new one (in case of prolog maybe a difficult
> > task?). Then try to adapt this file to your new language -> ob-prolog.el.
>
> Assuming that the statement I quoted is true, one should be able to
> export files that contain prolog code fragments:
>
> #+BEGIN_SRC prolog
> foo
> #+END_SRC
>
> One has to do `:exports code' since exporting results would require
> evaluation which *would* require that one write an ob-prolog.el.
>
> Also, one should be able to tangle the prolog code fragment(s) into
> files (no ob-prolog.el needed).
>

It is only because I do not understand how to "tangle the (prolog) code". I
know the export function but I know nothing about tangle. Do not feel
forced to answer. I know that I have to read the documentation first and I
apologize.


> Exporting and tangling  are generic services that babel provides even if
> there is no evaluation for that language.
>
> But as I said, I have not tried it: I am only trying to interpret what
> the doc is saying, so when the eating comes, the pudding may be stale.
> If the interpretation is wrong, I would love to be corrected. If the
> interpretation is right, but the exporting/tangling does not work, then
> that would be a babel bug.
>

I do not know.

Best wishes,

Jo.