From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Fwd: Bug in lisp indentation Date: Wed, 18 Jul 2007 14:49:44 -0400 Message-ID: References: <864pk3305t.fsf@lola.quinscape.zz> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1184784596 21497 80.91.229.12 (18 Jul 2007 18:49:56 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 18 Jul 2007 18:49:56 +0000 (UTC) Cc: emacs-devel@gnu.org To: rms@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Jul 18 20:49:55 2007 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1IBEaw-0008Qs-Sz for ged-emacs-devel@m.gmane.org; Wed, 18 Jul 2007 20:49:55 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IBEaw-0000LA-I5 for ged-emacs-devel@m.gmane.org; Wed, 18 Jul 2007 14:49:54 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1IBEau-0000L1-5Y for emacs-devel@gnu.org; Wed, 18 Jul 2007 14:49:52 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1IBEas-0000KR-Ex for emacs-devel@gnu.org; Wed, 18 Jul 2007 14:49:51 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IBEas-0000KN-6O for emacs-devel@gnu.org; Wed, 18 Jul 2007 14:49:50 -0400 Original-Received: from tomts36.bellnexxia.net ([209.226.175.93] helo=tomts36-srv.bellnexxia.net) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1IBEaq-0007do-5v; Wed, 18 Jul 2007 14:49:48 -0400 Original-Received: from pastel.home ([70.53.194.231]) by tomts36-srv.bellnexxia.net (InterMail vM.5.01.06.13 201-253-122-130-113-20050324) with ESMTP id <20070718184947.YDSS1657.tomts36-srv.bellnexxia.net@pastel.home>; Wed, 18 Jul 2007 14:49:47 -0400 Original-Received: by pastel.home (Postfix, from userid 20848) id BDE607FFA; Wed, 18 Jul 2007 14:49:44 -0400 (EDT) In-Reply-To: (Richard Stallman's message of "Wed\, 18 Jul 2007 00\:42\:23 -0400") User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1.50 (gnu/linux) X-detected-kernel: Solaris 8 (1) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:75082 Archived-At: > I think what takes the time is parsing _down_ from the top of the > function. Finding the start of the defun is very fast by comparison, > at least for Lisp. None of the indentation algorithms I've ever implemented does any forward parsing. It's always going backward. Going backward leads to better behavior as well: it only looks at nearby code to decide how to indent, so its behavior is more local and hence easier for the user to understand. Stefan