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: problem with font lock Date: Fri, 15 Jan 2010 09:19:15 -0500 Message-ID: References: <87zl4fftv2.fsf@newton.homeunix.net> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1263569594 23094 80.91.229.12 (15 Jan 2010 15:33:14 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 15 Jan 2010 15:33:14 +0000 (UTC) Cc: emacs-devel@gnu.org To: "Jose A. Ortega Ruiz" Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Jan 15 16:33:06 2010 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 1NVoAc-0000yx-9P for ged-emacs-devel@m.gmane.org; Fri, 15 Jan 2010 16:33:06 +0100 Original-Received: from localhost ([127.0.0.1]:38333 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NVoAc-0003q4-PR for ged-emacs-devel@m.gmane.org; Fri, 15 Jan 2010 10:33:06 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NVoAW-0003p8-Cy for emacs-devel@gnu.org; Fri, 15 Jan 2010 10:33:00 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1NVoAR-0003oS-NY for emacs-devel@gnu.org; Fri, 15 Jan 2010 10:32:59 -0500 Original-Received: from [199.232.76.173] (port=36611 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NVoAR-0003oL-F9 for emacs-devel@gnu.org; Fri, 15 Jan 2010 10:32:55 -0500 Original-Received: from pruche.dit.umontreal.ca ([132.204.246.22]:57460) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1NVoAP-0003tj-ND; Fri, 15 Jan 2010 10:32:53 -0500 Original-Received: from faina.iro.umontreal.ca (faina.iro.umontreal.ca [132.204.26.177]) by pruche.dit.umontreal.ca (8.14.1/8.14.1) with ESMTP id o0FEJHbw020993; Fri, 15 Jan 2010 09:19:19 -0500 Original-Received: by faina.iro.umontreal.ca (Postfix, from userid 20848) id E5FA73A0C7; Fri, 15 Jan 2010 09:19:15 -0500 (EST) In-Reply-To: <87zl4fftv2.fsf@newton.homeunix.net> (Jose A. Ortega Ruiz's message of "Fri, 15 Jan 2010 13:14:09 +0100") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.91 (gnu/linux) X-NAI-Spam-Score: 0 X-NAI-Spam-Rules: 1 Rules triggered RV3449=0 X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6 (newer, 3) 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:120053 Archived-At: > i'm experiencing an intermittent problem with font lock that i don't > know how to debug (this is emacs 23.1.91 packaged for debian). every now > and then, font lock just stops working in most (but not all) of the > buffers: the extant colors remain, but new text is not coloured at all > (e.g., if i comment a line out, the line's text retains its initial > faces instead of switching to the comment face). as i said, i haven't > found a way to reproduce this behaviour deterministically, and when it > starts happening i don't see any error message around. so my question > is: what would you recommend to look at when i enter this state, so that > i can submit a useful bug report? Once it's done it's too late. But you can (setq font-lock-support-mode nil) in your .emacs and then try to reproduce the problem. This should (well, may) give you a usable error message right when the problem appears. Stefan