From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#23949: 25.0.95; Regression in handling error caused by (string-match-p "." nil) Date: Wed, 13 Jul 2016 18:14:39 +0300 Message-ID: <8360s9a7ts.fsf@gnu.org> References: <83lh17ati6.fsf@gnu.org> <83h9bvarb6.fsf@gnu.org> <83mvllaa4u.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1468422994 28639 80.91.229.3 (13 Jul 2016 15:16:34 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 13 Jul 2016 15:16:34 +0000 (UTC) Cc: schwab@suse.de, 23949@debbugs.gnu.org, kaushal.modi@gmail.com To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Jul 13 17:16:18 2016 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 1bNLtZ-0008Sm-8k for geb-bug-gnu-emacs@m.gmane.org; Wed, 13 Jul 2016 17:16:17 +0200 Original-Received: from localhost ([::1]:48346 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNLtY-0006zW-L1 for geb-bug-gnu-emacs@m.gmane.org; Wed, 13 Jul 2016 11:16:16 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:32949) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNLtQ-0006vh-DD for bug-gnu-emacs@gnu.org; Wed, 13 Jul 2016 11:16:09 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bNLtK-0006JG-1L for bug-gnu-emacs@gnu.org; Wed, 13 Jul 2016 11:16:07 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:37643) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNLtJ-0006J3-Ue for bug-gnu-emacs@gnu.org; Wed, 13 Jul 2016 11:16:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1bNLtJ-0004CI-Qw for bug-gnu-emacs@gnu.org; Wed, 13 Jul 2016 11:16:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 13 Jul 2016 15:16:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 23949 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 23949-submit@debbugs.gnu.org id=B23949.146842291016061 (code B ref 23949); Wed, 13 Jul 2016 15:16:01 +0000 Original-Received: (at 23949) by debbugs.gnu.org; 13 Jul 2016 15:15:10 +0000 Original-Received: from localhost ([127.0.0.1]:49977 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bNLsT-0004Ay-Rd for submit@debbugs.gnu.org; Wed, 13 Jul 2016 11:15:10 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:41612) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bNLsR-0004Al-8w for 23949@debbugs.gnu.org; Wed, 13 Jul 2016 11:15:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bNLsH-0005wg-Vt for 23949@debbugs.gnu.org; Wed, 13 Jul 2016 11:15:02 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:56083) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bNLsH-0005wS-Se; Wed, 13 Jul 2016 11:14:57 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:3869 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1bNLsF-0007Bd-Qk; Wed, 13 Jul 2016 11:14:56 -0400 In-reply-to: (message from Stefan Monnier on Wed, 13 Jul 2016 10:48:15 -0400) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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" Xref: news.gmane.org gmane.emacs.bugs:121006 Archived-At: > From: Stefan Monnier > Cc: kaushal.modi@gmail.com, schwab@suse.de, 23949@debbugs.gnu.org > Date: Wed, 13 Jul 2016 10:48:15 -0400 > > > I also think that the "breaks a lot of Elisp code" part is at least a > > tad exaggerated. > > Binding inhibit-changing-match-data to t will pretty much break any > function that uses match-beginning or match-end. But those functions aren't supposed to run when string-match is called. > > (defsubst string-match-p (regexp string &optional start) > > "\ > > Same as `string-match' except this function does not change the match data." > > (condition-case err > > (let ((inhibit-changing-match-data t)) > > (string-match regexp string start)) > > (error (signal (car err) (cdr err))))) > > That will still cause the same problems when debug-on-signal is non-nil. So you don't consider this an improvement that should be installed?