From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.bugs Subject: bug#45944: 28.0.50; Mailabbrev sometimes hangs Date: Tue, 19 Jan 2021 05:47:20 +0100 Message-ID: <87o8hlpm7b.fsf@gnus.org> References: Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="7559"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: 45944@debbugs.gnu.org To: Katsumi Yamaoka Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Jan 19 05:48:12 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1l1iw7-0001sW-P7 for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 19 Jan 2021 05:48:11 +0100 Original-Received: from localhost ([::1]:48734 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l1iw6-0003GR-RQ for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 18 Jan 2021 23:48:10 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:47910) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l1ivy-0003Do-1B for bug-gnu-emacs@gnu.org; Mon, 18 Jan 2021 23:48:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:37493) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1l1ivx-0004YL-Qj for bug-gnu-emacs@gnu.org; Mon, 18 Jan 2021 23:48:01 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1l1ivx-0001DX-O6 for bug-gnu-emacs@gnu.org; Mon, 18 Jan 2021 23:48:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 19 Jan 2021 04:48:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 45944 X-GNU-PR-Package: emacs Original-Received: via spool by 45944-submit@debbugs.gnu.org id=B45944.16110316564641 (code B ref 45944); Tue, 19 Jan 2021 04:48:01 +0000 Original-Received: (at 45944) by debbugs.gnu.org; 19 Jan 2021 04:47:36 +0000 Original-Received: from localhost ([127.0.0.1]:49039 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1l1ivX-0001Cn-Qr for submit@debbugs.gnu.org; Mon, 18 Jan 2021 23:47:36 -0500 Original-Received: from quimby.gnus.org ([95.216.78.240]:54244) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1l1ivW-0001CW-HI for 45944@debbugs.gnu.org; Mon, 18 Jan 2021 23:47:35 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=JinTf2XMiwDZhlTQLccIh6keyZQD2KptqvwmulxwNH0=; b=WSk3Fc3SqJySzgppEYOe21ja7x WrNmrzLK1ypVWMYPJ4cx0B01zEMxqxPKcVqdGBP96aHeadAuqvxVmbMJA+vaICalH29ePP4xGhAPU CgcDnImL4WgRmorwX1EomV0ZWOKYI3AzvY/VaN8P9BYarRJlcXukrPHpobzG9JkuITLU=; Original-Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1l1ivJ-0003SF-Md; Tue, 19 Jan 2021 05:47:27 +0100 X-Now-Playing: Cocteau Twins's _Treasure Hiding (4): Sessions & Rarities_: "Smile" In-Reply-To: (Katsumi Yamaoka's message of "Tue, 19 Jan 2021 08:39:00 +0900") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:198121 Archived-At: Katsumi Yamaoka writes: > As far as I can observe, the more "____" line is long, the more > it takes a long time. Curious. I can reproduce this with the example code, but the function that's hanging is apparently just doing: (re-search-forward (concat "^" mail-citation-prefix-regexp ".*$") nil t) When I try this manually, then it doesn't hang, which is the curious thing? So why is it hanging from a syntax-propertize perspective but not when called directly? Debugger entered--Lisp error: (quit) search-forward-regexp("^\\([ \11]*\\(\\w\\|[_.]\\)+>+\\|[ \11]*[>|]\\)+.*$" 100 noerror) (while (search-forward-regexp citation-regexp end 'noerror) (let (( (let ((citation-regexp (concat "^" message-cite-prefix-regexp ".*$" message--syntax-propertize(1 100) syntax-propertize(100) internal--syntax-propertize(7) abbrev--before-point() Anyway, this is the regexp in question: (defcustom mail-citation-prefix-regexp (purecopy "\\([ \t]*\\(\\w\\|[_.]\\)+>+\\|[ \t]*[>|]\\)+") And I guess there's some extreme backtracking going on with the \\(\\w\\|[_.]\\)+> part? -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no