From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Colin S. Miller" Newsgroups: gmane.emacs.help Subject: Re: string-match bug? Date: Mon, 07 Dec 2009 15:08:38 +0000 Organization: SunSITE.dk - Supporting Open source Message-ID: <4b1d1a48$0$278$14726298@news.sunsite.dk> References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1260205758 9513 80.91.229.12 (7 Dec 2009 17:09:18 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 7 Dec 2009 17:09:18 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Mon Dec 07 18:09:11 2009 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1NHh5C-0002rZ-KP for geh-help-gnu-emacs@m.gmane.org; Mon, 07 Dec 2009 18:09:10 +0100 Original-Received: from localhost ([127.0.0.1]:59192 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NHh5C-0008Mq-5l for geh-help-gnu-emacs@m.gmane.org; Mon, 07 Dec 2009 12:09:10 -0500 Original-Path: news.stanford.edu!usenet.stanford.edu!goblin2!goblin.stu.neva.ru!news.net.uni-c.dk!dotsrc.org!filter.dotsrc.org!news.dotsrc.org!not-for-mail User-Agent: Mozilla-Thunderbird 2.0.0.22 (X11/20090706) Original-Newsgroups: gnu.emacs.help In-Reply-To: Original-Lines: 20 Original-NNTP-Posting-Host: 62.56.51.242 Original-X-Trace: news.sunsite.dk DXC=PkmL=Nc?o604KInH]F]>5fdD?L8VmB8OOn[7LY1L_5QScK68eBi57; QNS\SSPXn7=`B>8HMEID8BbE\ZcHPZ644AX; _Tg?b`4 Original-X-Complaints-To: staff@sunsite.dk Original-Xref: news.stanford.edu gnu.emacs.help:175399 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:70475 Archived-At: Andreas Roehler wrote: > Hi, > > is this a bug? > > (string-match "" "foo") => 0 > Andreas, that is checking if the empty string can be found somewhere in the string "foo", which always matches at offset 0. If you want to check if "foo" IS the empty string then do (string-match "^$" "foo") HTH, Colin S. Miller -- Replace the obvious in my email address with the first three letters of the hostname to reply.