From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Subject: Re: problem with ox-pandoc export
Date: Fri, 03 Jul 2015 18:42:57 +0200
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To: Richard Lawrence <richard.lawrence@berkeley.edu>
Cc: emacs-orgmode@gnu.org

Richard Lawrence <richard.lawrence@berkeley.edu> writes:

> Rasmus <rasmus@gmx.us> writes:
>
>> I don't see it as reinventing the wheel.  One example, does pandoc have
>> something like the ox filters?
>
> It does; see e.g. http://pandoc.org/scripting.html
>
> Pandoc filters are actually more powerful than Org filters in most
> cases, because they are AST transformations.  Pattern matching makes it
> convenient and practical in Haskell to just transform the part of the
> tree you're interested in.  And because the Pandoc data structure has a
> JSON serialization format, filters can be written in just about any
> language, not just Haskell.
>
> This is an nice system, IMHO, which has one big advantage: it is
> possible to write complex filters (i.e., those that do more than just
> simple string manipulation) in an output-agnostic way.  Pandoc filters
> can do things which are generally only possible or convenient to do in
> Org by creating a derived backend, which isn't output-agnostic.

For the record, you can do the same in Org with a parse tree filter.
Other filters are meant to be less powerful but easier to write.

Regards,