From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#33887: 26.1; Emacs hangs for several seconds when going to the end of an XML file in nXML mode Date: Thu, 10 Jan 2019 17:09:39 +0200 Message-ID: <8336q0im6k.fsf@gnu.org> References: <87ftujuvkd.fsf@zira.vinc17.org> <87ef9m2421.fsf@gmail.com> NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1547133038 8570 195.159.176.226 (10 Jan 2019 15:10:38 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 10 Jan 2019 15:10:38 +0000 (UTC) Cc: 33887@debbugs.gnu.org To: Fernando Jascovich , Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Jan 10 16:10:33 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ghbyY-00025p-SW for geb-bug-gnu-emacs@m.gmane.org; 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Thu, 10 Jan 2019 10:10:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 10 Jan 2019 15:10:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 33887 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 33887-submit@debbugs.gnu.org id=B33887.154713299422087 (code B ref 33887); Thu, 10 Jan 2019 15:10:01 +0000 Original-Received: (at 33887) by debbugs.gnu.org; 10 Jan 2019 15:09:54 +0000 Original-Received: from localhost ([127.0.0.1]:54085 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ghbxx-0005kB-Pb for submit@debbugs.gnu.org; Thu, 10 Jan 2019 10:09:53 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:38060) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ghbxw-0005jz-0C for 33887@debbugs.gnu.org; Thu, 10 Jan 2019 10:09:52 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ghbxq-0002gv-99 for 33887@debbugs.gnu.org; Thu, 10 Jan 2019 10:09:46 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:39389) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ghbxq-0002gf-59; Thu, 10 Jan 2019 10:09:46 -0500 Original-Received: from [176.228.60.248] (port=3280 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1ghbxp-0006ML-OK; Thu, 10 Jan 2019 10:09:46 -0500 In-reply-to: <87ef9m2421.fsf@gmail.com> (message from Fernando Jascovich on Tue, 08 Jan 2019 19:11:02 -0300) 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: 209.51.188.43 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:154310 Archived-At: > From: Fernando Jascovich > Date: Tue, 08 Jan 2019 19:11:02 -0300 > > Hi everyone, this is my first email to bug-gnu-emacs, so please let me > know if I am making some mistake. > For no special reason, I took this bug in order to start to know emacs' > code. > Following and confirming the details of the bug, I found that indeed the > performance issue is introduced at commit 0055190174, but not beacuse > the introduction of `sgml-syntax-propertize-inside`. > The problem is with the last rule: > ``` > ("\"" (0 (if (prog1 (zerop (car (syntax-ppss (match-beginning 0)))) > (goto-char (match-end 0))) > (string-to-syntax "."))) > ``` > I can't see the real effect of this rule, I tested xml parsing without > this rule and it works fine, marking double quotes inside tags as > expected without this performance issue. > Do we need to target double quotes outside tags explicitly? Stefan, any comments?