From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.help Subject: Re: regular expression Date: Mon, 30 Jun 2014 23:11:39 +0200 Organization: Aioe.org NNTP Server Message-ID: <87simmgl10.fsf@debian.uxu> References: <871tu6b1uw.fsf@debian.uxu> <87r4269mwa.fsf@debian.uxu> <87y4weglwm.fsf@debian.uxu> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1404162929 11177 80.91.229.3 (30 Jun 2014 21:15:29 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 30 Jun 2014 21:15:29 +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 Jun 30 23:15:22 2014 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 1X1iv4-0002rZ-AW for geh-help-gnu-emacs@m.gmane.org; Mon, 30 Jun 2014 23:15:22 +0200 Original-Received: from localhost ([::1]:36689 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X1iv3-0000KO-EA for geh-help-gnu-emacs@m.gmane.org; Mon, 30 Jun 2014 17:15:21 -0400 Original-Path: usenet.stanford.edu!news.kjsl.com!feeder.erje.net!eu.feeder.erje.net!newsfeed.datemas.de!rt.uk.eu.org!aioe.org!.POSTED!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 19 Original-NNTP-Posting-Host: SIvZRMPqRkkTHAHL6NkRuw.user.speranza.aioe.org Original-X-Complaints-To: abuse@aioe.org User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) X-Notice: Filtered by postfilter v. 0.8.2 Cancel-Lock: sha1:70BnDRaDZ7DCx713vZ69t4fobPM= Mail-Copies-To: never Original-Xref: usenet.stanford.edu gnu.emacs.help:206198 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:98469 Archived-At: Teemu Likonen writes: >> (replace-regexp "[[:alpha:][:digit:]]" "x") One1 >> (will be xxxx) > > I think [[:alpha:][:digit:]] is the same thing as > [[:alnum:]]. OK, I made up the example so the OP would understand the brackets, that is, the first (outer) pair makes it a class, and the second (inner) pair puts some chars into that class. So you'd not think [[:alnum:]] is "atomic" syntax... I don't know how to better explain it - the example is more clear, but of course examples should make sense as well... -- underground experts united: http://user.it.uu.se/~embe8573