From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Barry Margolin Newsgroups: gmane.emacs.help Subject: Re: trivial regexp problem Date: Tue, 22 Jan 2013 11:44:51 -0500 Organization: A noiseless patient Spider Message-ID: References: NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1358873113 18307 80.91.229.3 (22 Jan 2013 16:45:13 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 22 Jan 2013 16:45:13 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Tue Jan 22 17:45:32 2013 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1TxgyY-0003fA-I7 for geh-help-gnu-emacs@m.gmane.org; Tue, 22 Jan 2013 17:45:30 +0100 Original-Received: from localhost ([::1]:49279 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TxgyH-0006JS-8B for geh-help-gnu-emacs@m.gmane.org; Tue, 22 Jan 2013 11:45:13 -0500 Original-Path: usenet.stanford.edu!news.kjsl.com!us.feeder.erje.net!feeder.erje.net!eu.feeder.erje.net!eternal-september.org!feeder.eternal-september.org!mx04.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 18 Injection-Info: barmar.motzarella.org; posting-host="2be9e9f5dd9af768b8861af71b85fc28"; logging-data="27006"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18I3C695uu5OvS/GZegeNFF" User-Agent: MT-NewsWatcher/3.5.3b3 (Intel Mac OS X) Cancel-Lock: sha1:5us9kL2jgOLKaqhkwi2Be+glr64= Original-Xref: usenet.stanford.edu gnu.emacs.help:196472 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:88766 Archived-At: In article , Luca Ferrari wrote: > Hi all, > I need a little hint on a regexp that is not working within lookig-at: > I want to recognize any label of the form "label:" so I tested the > following against re-search-forward "^[ \t]*.*:" and it works. > However, the same into a looking-at call is not working, so how can I > find the following regexp? What's the purpose of [ \t]* at the beginning of the regexp? Since it's immediately followed by .*, which matches anything, the regexp will match whether or not the line begins with whitespace. -- Barry Margolin, barmar@alum.mit.edu Arlington, MA *** PLEASE post questions in newsgroups, not directly to me ***