From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: regexp question: match anything but not a group? Date: Thu, 03 Apr 2014 10:37:50 -0400 Message-ID: References: <87zjk4louc.fsf@gmail.com> <533BC538.7010906@easy-emacs.de> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1396535922 9934 80.91.229.3 (3 Apr 2014 14:38:42 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 3 Apr 2014 14:38:42 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Apr 03 16:38:34 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 1WVimm-0005N6-4F for geh-help-gnu-emacs@m.gmane.org; Thu, 03 Apr 2014 16:38:32 +0200 Original-Received: from localhost ([::1]:44421 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WViml-0005fP-O6 for geh-help-gnu-emacs@m.gmane.org; Thu, 03 Apr 2014 10:38:31 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:45392) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WVimT-0005W7-0P for help-gnu-emacs@gnu.org; Thu, 03 Apr 2014 10:38:20 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WVimL-0005yt-Hn for help-gnu-emacs@gnu.org; Thu, 03 Apr 2014 10:38:12 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:53031) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WVimL-0005yi-Bf for help-gnu-emacs@gnu.org; Thu, 03 Apr 2014 10:38:05 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1WVimI-00050e-Gk for help-gnu-emacs@gnu.org; Thu, 03 Apr 2014 16:38:02 +0200 Original-Received: from 192-171-35-19.cpe.pppoe.ca ([192.171.35.19]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 03 Apr 2014 16:38:02 +0200 Original-Received: from monnier by 192-171-35-19.cpe.pppoe.ca with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 03 Apr 2014 16:38:02 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 9 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 192-171-35-19.cpe.pppoe.ca User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) Cancel-Lock: sha1:W+rVcizdQoqHdcYeaXVko2GvSyU= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 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:96938 Archived-At: > You need look-ahead-assertions, which aren't implemented in Emacs AFAIK. Actually, what he needs is negation. In Perl regexp, negation is provided via look-ahead assertions, but in lex.el, they're provided as the "normal negation operator". I.e. in lex.el (negate RE) is a regular expression which matches any string not matched by RE. Stefan