From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kevin Rodgers Newsgroups: gmane.emacs.bugs Subject: bug#18013: 24.3.92; looking-back "[^\n]" taking a lot of time in large buffers Date: Tue, 15 Jul 2014 00:08:01 -0600 Message-ID: References: <87oaws9sp2.fsf@geodiff-mac3.ulb.ac.be> <878unw9ot9.fsf_-_@geodiff-mac3.ulb.ac.be> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1405404517 29785 80.91.229.3 (15 Jul 2014 06:08:37 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 15 Jul 2014 06:08:37 +0000 (UTC) To: 18013@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Jul 15 08:08:29 2014 Return-path: Envelope-to: geb-bug-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 1X6vue-0005NC-83 for geb-bug-gnu-emacs@m.gmane.org; Tue, 15 Jul 2014 08:08:28 +0200 Original-Received: from localhost ([::1]:33137 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6vub-0006qa-E8 for geb-bug-gnu-emacs@m.gmane.org; Tue, 15 Jul 2014 02:08:25 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60287) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6vuO-0006pR-7Q for bug-gnu-emacs@gnu.org; Tue, 15 Jul 2014 02:08:22 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1X6vuE-0002Yw-9r for bug-gnu-emacs@gnu.org; Tue, 15 Jul 2014 02:08:12 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:59951) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6vuE-0002Ye-78 for bug-gnu-emacs@gnu.org; Tue, 15 Jul 2014 02:08:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1X6vuD-0006PV-O0 for bug-gnu-emacs@gnu.org; Tue, 15 Jul 2014 02:08:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Kevin Rodgers Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 15 Jul 2014 06:08:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18013 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.140540447624629 (code B ref -1); Tue, 15 Jul 2014 06:08:01 +0000 Original-Received: (at submit) by debbugs.gnu.org; 15 Jul 2014 06:07:56 +0000 Original-Received: from localhost ([127.0.0.1]:55217 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1X6vu7-0006PA-OO for submit@debbugs.gnu.org; Tue, 15 Jul 2014 02:07:56 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:58195) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1X6vu5-0006Ot-1D for submit@debbugs.gnu.org; Tue, 15 Jul 2014 02:07:53 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1X6vtp-0002Jy-Ht for submit@debbugs.gnu.org; Tue, 15 Jul 2014 02:07:47 -0400 Original-Received: from lists.gnu.org ([2001:4830:134:3::11]:41173) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6vtp-0002Jp-FH for submit@debbugs.gnu.org; Tue, 15 Jul 2014 02:07:37 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:59694) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6vth-0006od-T6 for bug-gnu-emacs@gnu.org; Tue, 15 Jul 2014 02:07:37 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1X6vta-0002BG-E3 for bug-gnu-emacs@gnu.org; Tue, 15 Jul 2014 02:07:29 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:54656) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6vta-0002Ar-72 for bug-gnu-emacs@gnu.org; Tue, 15 Jul 2014 02:07:22 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1X6vtY-00050I-0X for bug-gnu-emacs@gnu.org; Tue, 15 Jul 2014 08:07:20 +0200 Original-Received: from 71-212-253-190.hlrn.qwest.net ([71.212.253.190]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 15 Jul 2014 08:07:20 +0200 Original-Received: from kevin.d.rodgers by 71-212-253-190.hlrn.qwest.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 15 Jul 2014 08:07:20 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 13 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 71-212-253-190.hlrn.qwest.net User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9.2.28) Gecko/20120306 Thunderbird/3.1.20 In-Reply-To: <878unw9ot9.fsf_-_@geodiff-mac3.ulb.ac.be> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:91556 Archived-At: On 7/14/14 5:12 AM, Nicolas Richard wrote: > As you see it takes more than 8 seconds on my system, most of that time > is spent looking-back (inserting the file is quick). > > (looking-back "[^\n]") is bad code, so I totally deserve this. Still, is > it possible to make the search smarter when the match is supposed to be > "anchored" at point ? Otherwise let's just close this bug. Use "\\=" to match the empty string at point. -- Kevin Rodgers Denver, Colorado, USA