From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Frings <peter.frings@agfa.com>
Subject: Re: Formal description of Org files
Date: Fri, 15 Apr 2011 13:50:40 +0200
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To: Carsten Dominik <carsten.dominik@gmail.com>, emacs-orgmode mailing list <emacs-orgmode@gnu.org>
Cc: Rainer Stengele <rainer.stengele@diplan.de>


On 15 Apr 2011, at 12:57, Carsten Dominik wrote:

> On Apr 15, 2011, at 10:54 AM, Rainer Stengele wrote:
>=20
>> Am 15.04.2011 09:58, schrieb Carsten Dominik:
>>> Hi,
>>>=20
>>> I have a question.
>>>=20
>>> At FOSDEM, someone asked me if there was a formal description of the =
structure of Org files, in some language that would be the input for a =
parser (or parser generator?) so that Org file could be easily parsed.

<snip>

>> Hi,
>>=20
>> maybe Backus-Naur was meant?
>=20
> That is very well possible.  Sounds like a word I would not have =
recognized....
> So would on Org-mode grammar start like this?

> headline> ::=3D "*"+ <opt-todo-keyword>
>                    <opt-priority-cookie>
>                    <title>
>                    <opt-tags>
>=20
> <opt-todo-keyword> ::=3D <whitespace> <todo-keyword> | =93=94
<snip>

Yes, that seems like extended BN. [1]
Good luck with it! You=92ll need it... :-)

[1] http://en.wikipedia.org/wiki/Extended_Backus=96Naur_Form


Cheers,
Peter.
--=20
c++;         // this makes c bigger but returns the old value