From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicolas Goaziou Subject: Re: GSoC 2012 -- Elisp backend for Ragel Date: Sun, 25 Mar 2012 13:40:53 +0200 Message-ID: <87vclsykl6.fsf@gmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Return-path: Received: from eggs.gnu.org ([208.118.235.92]:46375) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SBlr9-000230-5b for emacs-orgmode@gnu.org; Sun, 25 Mar 2012 07:43:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SBlr5-0000mo-T5 for emacs-orgmode@gnu.org; Sun, 25 Mar 2012 07:43:30 -0400 Received: from mail-we0-f169.google.com ([74.125.82.169]:45772) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SBlr5-0000mH-Jv for emacs-orgmode@gnu.org; Sun, 25 Mar 2012 07:43:27 -0400 Received: by werj55 with SMTP id j55so4629010wer.0 for ; Sun, 25 Mar 2012 04:43:24 -0700 (PDT) In-Reply-To: (=?utf-8?Q?=22Aur=C3=A9lien?= Aptel"'s message of "Sun, 25 Mar 2012 12:06:04 +0200") List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org To: =?utf-8?Q?Aur=C3=A9lien?= Aptel Cc: Rustom Mody , ragel-users@complang.org, emacs-orgmode Hello, Aur=C3=A9lien Aptel writes: > On Sun, Mar 25, 2012 at 6:17 AM, Rustom Mody wrot= e: >> FYI, there is already an elisp Org parser being worked on in development >> branch of Org mode. It isn't finished yet, but still advanced enough so >> a generic exporter could be built upon it. > >> Is there any interest in ignoring it and restart all the work from >> scratch? >> >> Yes I agree, no point redoing work unnecessarily.=C2=A0 Maybe the optimal >> solution would be for Aur=C3=A9lien to work with Nicolas and Adrian to m= inimize >> useless rework? > > Regardless of the org-mode parser, I think I should work on the elisp > backend for ragel which is something that can benefit any elisp > project. Certainly. > As for the new org-mode parser, I could not find it on the repo. Could > you point me to the relevant files? See org-element.el in contrib/ directory. You need development version. > Is it still hand written?=20 Yes. > If so, I think it's ultimately a bad idea and it should be rewritten > using ragel. It may be. But it allows for flexibility. Org's syntax is evolving, and I consider org-element.el as a parser, but also as a guidance in that process. Since there is no formal description for Org syntax yet, an org-element.el is more useful than a full-blown parser generator for now. I don't know ragel (save for a short excursion in its website), but I'm pretty sure that even if it generates elisp code without dependency, any evolution to Org syntax will require to use it again. At that time, it may be difficult to find someone able and willing to undertake that updating task in a reasonable delay (since we're talking about a core feature). On the other hand, there are quite a few elisp hackers in Emacs's world. Now, if ragel can improve org-element.el while preserving its flexibility (and a compatible output, since I assume you won't also rewrite the generic export engine), I'm all ears. Regards, --=20 Nicolas Goaziou