From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Pascal J. Bourguignon" Newsgroups: gmane.emacs.help Subject: Re: A variant of match-end, but after replacement? Date: Mon, 20 Jul 2015 00:45:09 +0200 Organization: Informatimago Message-ID: <874mkz4vii.fsf@kuiper.lan.informatimago.com> References: <87h9p04ain.fsf@kuiper.lan.informatimago.com> <87d1zo49e6.fsf@kuiper.lan.informatimago.com> <878uac463w.fsf@kuiper.lan.informatimago.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1437346236 6314 80.91.229.3 (19 Jul 2015 22:50:36 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 19 Jul 2015 22:50:36 +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 Jul 20 00:50:21 2015 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 1ZGxPW-0006Tl-QL for geh-help-gnu-emacs@m.gmane.org; Mon, 20 Jul 2015 00:50:18 +0200 Original-Received: from localhost ([::1]:53082 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZGxPV-0006vA-VR for geh-help-gnu-emacs@m.gmane.org; Sun, 19 Jul 2015 18:50:17 -0400 Original-Path: usenet.stanford.edu!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 41 Original-X-Trace: individual.net aU5bvv0km0JBcdBQFFue0QhB/a62WN8KX9LhTYCrs/RJzd04yJ Cancel-Lock: sha1:ZjRkMTJlNjBlNTRlZDkzZTM2NDViOTAzYjM0OWIxMzRhYjAwMjk0OA== sha1:6d91Okaa6qbOJShHjLx4rr+ff4M= Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwAQMAAABtzGvEAAAABlBMVEUAAAD///+l2Z/dAAAA oElEQVR4nK3OsRHCMAwF0O8YQufUNIQRGIAja9CxSA55AxZgFO4coMgYrEDDQZWPIlNAjwq9 033pbOBPtbXuB6PKNBn5gZkhGa86Z4x2wE67O+06WxGD/HCOGR0deY3f9Ijwwt7rNGNf6Oac l/GuZTF1wFGKiYYHKSFAkjIo1b6sCYS1sVmFhhhahKQssRjRT90ITWUk6vvK3RsPGs+M1RuR mV+hO/VvFAAAAABJRU5ErkJggg== X-Accept-Language: fr, es, en User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) Original-Xref: usenet.stanford.edu gnu.emacs.help:213574 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:105860 Archived-At: Barry Margolin writes: > In article , > Marcin Borkowski wrote: > >> On 2015-07-19, at 15:41, Pascal J. Bourguignon wrote: >> >> > Marcin Borkowski writes: >> > >> >>> (let ((old-end (prog1 (match-end 1) >> >>> (replace-match "newtext" t t string 1)))) >> >>> (do-something old-end)) >> >> >> >> Still not there - I can't assume that "newtext" will have the same >> >> length as the thing it replaced... >> > >> > Sorry, I misread what you wanted. >> > >> > (let ((new-end (+ (prog1 (match-beginning 1) >> > (replace-match new-text t t string 1))) >> > (length new-text))) >> > (do-somthing-from new-end)) >> >> Thanks! That's easy, and indeed it will work, since the length of the >> replacement is fixed in my use-case. > > Yeah, this would be trickier if new-text contained back-references. Not very much: (let ((end (match-end 1)) (new-string (replace-match new-text t t string 1))) (do-something-from new-string (+ end (- (length string) (legnth new-string))))) -- __Pascal Bourguignon__ http://www.informatimago.com/ “The factory of the future will have only two employees, a man and a dog. The man will be there to feed the dog. The dog will be there to keep the man from touching the equipment.” -- Carl Bass CEO Autodesk