From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Stuart D. Herring" Newsgroups: gmane.emacs.devel Subject: Re: Progressively slow pattern match Date: Wed, 17 May 2006 13:21:57 -0700 (PDT) Message-ID: <49397.128.165.123.132.1147897317.squirrel@webmail.lanl.gov> References: <87ejysbg5d.fsf@neutrino.caeruleus.net><851wusphnd.fsf@lola.goethe.zz> <87r72sa0s0.fsf@neutrino.caeruleus.net> Reply-To: herring@lanl.gov NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: sea.gmane.org 1147897354 8839 80.91.229.2 (17 May 2006 20:22:34 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 17 May 2006 20:22:34 +0000 (UTC) Cc: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed May 17 22:22:29 2006 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1FgSXB-0007LK-DR for ged-emacs-devel@m.gmane.org; Wed, 17 May 2006 22:22:17 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1FgSXA-0004iq-T9 for ged-emacs-devel@m.gmane.org; Wed, 17 May 2006 16:22:16 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1FgSWz-0004hY-SI for emacs-devel@gnu.org; Wed, 17 May 2006 16:22:05 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1FgSWy-0004fy-7s for emacs-devel@gnu.org; Wed, 17 May 2006 16:22:05 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1FgSWy-0004fv-3n for emacs-devel@gnu.org; Wed, 17 May 2006 16:22:04 -0400 Original-Received: from [192.65.95.54] (helo=mailwasher-b.lanl.gov) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA:32) (Exim 4.52) id 1FgSZt-0001LM-Vd for emacs-devel@gnu.org; Wed, 17 May 2006 16:25:06 -0400 Original-Received: from mailrelay2.lanl.gov (mailrelay2.lanl.gov [128.165.4.103]) by mailwasher-b.lanl.gov (8.12.11.20060308/8.12.11/(ccn-5)) with ESMTP id k4HKM06F001965 for ; Wed, 17 May 2006 14:22:01 -0600 Original-Received: from webmail1.lanl.gov (webmail1.lanl.gov [128.165.4.106]) by mailrelay2.lanl.gov (8.12.11.20060308/8.12.11/(ccn-5)) with ESMTP id k4HKLv4l015720; Wed, 17 May 2006 14:21:57 -0600 Original-Received: from webmail1.lanl.gov (localhost.localdomain [127.0.0.1]) by webmail1.lanl.gov (8.12.11.20060308/8.12.11) with ESMTP id k4HKLv9m032759; Wed, 17 May 2006 14:21:57 -0600 Original-Received: (from apache@localhost) by webmail1.lanl.gov (8.12.11.20060308/8.12.11/Submit) id k4HKLvbU032757; Wed, 17 May 2006 13:21:57 -0700 X-Authentication-Warning: webmail1.lanl.gov: apache set sender to herring@lanl.gov using -f Original-Received: from 128.165.123.132 (SquirrelMail authenticated user 196434); by webmail.lanl.gov with HTTP; Wed, 17 May 2006 13:21:57 -0700 (PDT) In-Reply-To: <87r72sa0s0.fsf@neutrino.caeruleus.net> Original-To: "Ralf Angeli" User-Agent: SquirrelMail/1.4.3a-11.EL3 X-Mailer: SquirrelMail/1.4.3a-11.EL3 X-Priority: 3 (Normal) Importance: Normal X-PMX-Version: 4.7.1.128075 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:54659 Archived-At: > The original regexp looks something like > "\\(%+[ \t]*\\)*foo" > in order to match stuff like > %% %% %% foo Try "\\(%+\\(?:[ \t]+%+\\)*\\)"? I think that should avoid invoking the backtracker for long strings of %. Davis -- This product is sold by volume, not by mass. If it appears too dense or too sparse, it is because mass-energy conversion has occurred during shipping.