From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kenichi Handa Newsgroups: gmane.emacs.bugs Subject: bug#9681: Broken behaviour of re-search-backward (.+ matching only a single character) Date: Tue, 11 Oct 2011 11:03:26 +0900 Message-ID: References: <8762k21o09.fsf@gmail.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1318298639 15198 80.91.229.12 (11 Oct 2011 02:03:59 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 11 Oct 2011 02:03:59 +0000 (UTC) Cc: 9681@debbugs.gnu.org, stepnem@gmail.com To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Oct 11 04:03:53 2011 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1RDRhB-000534-GQ for geb-bug-gnu-emacs@m.gmane.org; Tue, 11 Oct 2011 04:03:53 +0200 Original-Received: from localhost ([::1]:37464 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RDRhA-0001An-TA for geb-bug-gnu-emacs@m.gmane.org; Mon, 10 Oct 2011 22:03:52 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:35042) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RDRh8-0001AV-9e for bug-gnu-emacs@gnu.org; Mon, 10 Oct 2011 22:03:51 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RDRh6-0004C5-JW for bug-gnu-emacs@gnu.org; Mon, 10 Oct 2011 22:03:50 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:40827) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RDRh6-0004Bz-Hz for bug-gnu-emacs@gnu.org; Mon, 10 Oct 2011 22:03:48 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.69) (envelope-from ) id 1RDRhK-0004FY-BF for bug-gnu-emacs@gnu.org; Mon, 10 Oct 2011 22:04:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Kenichi Handa Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 11 Oct 2011 02:04:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 9681 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 9681-submit@debbugs.gnu.org id=B9681.131829862916317 (code B ref 9681); Tue, 11 Oct 2011 02:04:02 +0000 Original-Received: (at 9681) by debbugs.gnu.org; 11 Oct 2011 02:03:49 +0000 Original-Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1RDRh6-0004F8-MQ for submit@debbugs.gnu.org; Mon, 10 Oct 2011 22:03:49 -0400 Original-Received: from mx1.aist.go.jp ([150.29.246.133]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1RDRh3-0004Ew-5f for 9681@debbugs.gnu.org; Mon, 10 Oct 2011 22:03:47 -0400 Original-Received: from rqsmtp1.aist.go.jp (rqsmtp1.aist.go.jp [150.29.254.115]) by mx1.aist.go.jp with ESMTP id p9B23RX4000761; Tue, 11 Oct 2011 11:03:27 +0900 (JST) env-from (handa@m17n.org) Original-Received: from smtp1.aist.go.jp by rqsmtp1.aist.go.jp with ESMTP id p9B23RSl002010; Tue, 11 Oct 2011 11:03:27 +0900 (JST) env-from (handa@m17n.org) Original-Received: by smtp1.aist.go.jp with ESMTP id p9B23QDG003405; Tue, 11 Oct 2011 11:03:26 +0900 (JST) env-from (handa@m17n.org) In-Reply-To: (message from Stefan Monnier on Fri, 07 Oct 2011 09:02:18 -0400) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Mon, 10 Oct 2011 22:04:02 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) 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:52490 Archived-At: In article , Stefan Monnier writes: > It's not the ideal behavior, admittedly. It's even more obvious in > `looking-back'. But fixing it would require the implementation of > a backward regexp matcher. FYI, in Mule (the version before integrating into Emacs), we implemented such a feature by doing these: o Regular expression compiler written in Elisp which generates both forward matching and backward matching compiled patterns. o Modify regex.c to accept the above patterns and do backward matching if necessary. I vaguely remember that I discussed this feature with RMS when we were going to integrate Mule's multilingual feature into Emacs, and it was rejected because it's not related to multilingual feature. And actually, that feature had been used very rarely. --- Kenichi Handa handa@m17n.org