From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Ralf Angeli Newsgroups: gmane.emacs.devel Subject: Re: Progressively slow pattern match Date: Wed, 17 May 2006 23:13:28 +0200 Message-ID: <87mzdg9wxz.fsf@neutrino.caeruleus.net> References: NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1147900465 20300 80.91.229.2 (17 May 2006 21:14:25 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 17 May 2006 21:14:25 +0000 (UTC) Cc: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed May 17 23:14:24 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 1FgTLK-0000fO-5d for ged-emacs-devel@m.gmane.org; Wed, 17 May 2006 23:14:06 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1FgTLJ-0001NW-JW for ged-emacs-devel@m.gmane.org; Wed, 17 May 2006 17:14:05 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1FgTL5-0001MP-Dl for emacs-devel@gnu.org; Wed, 17 May 2006 17:13:51 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1FgTL3-0001Lv-R1 for emacs-devel@gnu.org; Wed, 17 May 2006 17:13:51 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1FgTL3-0001Ll-M1 for emacs-devel@gnu.org; Wed, 17 May 2006 17:13:49 -0400 Original-Received: from [212.227.126.183] (helo=moutng.kundenserver.de) by monty-python.gnu.org with esmtp (Exim 4.52) id 1FgTNx-0006Ab-Cp; Wed, 17 May 2006 17:16:49 -0400 Original-Received: from [212.144.208.12] (helo=neutrino.caeruleus.net) by mrelayeu.kundenserver.de (node=mrelayeu1) with ESMTP (Nemesis), id 0MKwpI-1FgTKx4AhG-0006wg; Wed, 17 May 2006 23:13:45 +0200 Original-To: Alan Mackenzie X-Provags-ID: kundenserver.de abuse@kundenserver.de login:abf9ffac21f8345504ac40c53d3b40ba 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:54663 Archived-At: * Alan Mackenzie (2006-05-17) writes: > On Wed, 17 May 2006, Ralf Angeli wrote: > >>The original regexp looks something like >>"\\(%+[ \t]*\\)*foo" >>in order to match stuff like >>%% %% %% foo > > Use "\\(%+[ \t]+\\)%*foo" Thanks for all the explanations and suggestions, also from Kevin, David and Stuart. So it really was a badly written regexp. \c: I think I'll settle with "\\(%[% \t]*\\)?foo" That means David's suggestion with an added "?" in order for it to match a bare "foo" without preceding comment characters as well. For me it looks like the one easiest to understand. -- Ralf