From mboxrd@z Thu Jan  1 00:00:00 1970
From: Carsten Dominik <carsten.dominik@gmail.com>
Subject: Re: Formal description of Org files
Date: Fri, 15 Apr 2011 12:57:41 +0200
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To: Rainer Stengele <rainer.stengele@diplan.de>
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On Apr 15, 2011, at 10:54 AM, Rainer Stengele wrote:

> 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.
>>=20
>> Unfortunately I did not catch the name of the format description =
language that could be
>> used for something, not did I catch the name of the person who talked =
to me.
>>=20
>> Can anyone help out here?  Let me know what language to use, and =
maybe help work on such a formal description?  I think it would be =
useful to have....
>>=20
>> - Carsten
>>=20
> Hi,
>=20
> maybe Backus-Naur was meant?


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>

<opt-todo-keyword> ::=3D <whitespace> <todo-keyword> | ""

<opt-priority-cookie> ::=3D <whitespace> <priority-cookie> | ""

<opt-tags> ::=3D <whitespace> <tags> | ""



<todo-keyword> ::=3D "TODO" | "DONE"

<priority-cookie> ::=3D "[" "#" <priority> "]"

<priority> ::=3D "A" | "B" | "C"                  =20

<tags> ::=3D ( ":" <tag> )+ ":"

<whitespace> ::=3D " " <opt-whitespace> | "\t" <opt-whitespace>

<opt-whitespace> ::=3D <whitespace> | ""

=
--------------------------------------------------------------------------=
-----=