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#16526: 24.3.50; scroll-conservatively & c-mode regression. The purpose of revision 116070. Date: Sun, 26 Jan 2014 19:35:10 +0200 Message-ID: <83y522abox.fsf@gnu.org> References: <52E38286.1050306@gmx.at> <838uu4cq11.fsf@gnu.org> <52E3D131.2090705@gmx.at> <20140125202721.GA3630@acm.acm> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1390757777 1753 80.91.229.3 (26 Jan 2014 17:36:17 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 26 Jan 2014 17:36:17 +0000 (UTC) Cc: 16526@debbugs.gnu.org To: Alan Mackenzie Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Jan 26 18:36:20 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 1W7Td6-0001CK-HZ for geb-bug-gnu-emacs@m.gmane.org; Sun, 26 Jan 2014 18:36:20 +0100 Original-Received: from localhost ([::1]:55631 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W7Td6-0004HJ-5n for geb-bug-gnu-emacs@m.gmane.org; Sun, 26 Jan 2014 12:36:20 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:59232) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W7Tcz-0004Fm-2w for bug-gnu-emacs@gnu.org; Sun, 26 Jan 2014 12:36:18 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1W7Tct-0002Re-SC for bug-gnu-emacs@gnu.org; Sun, 26 Jan 2014 12:36:13 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:50996) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W7Tco-0002Qt-B5; Sun, 26 Jan 2014 12:36:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1W7Tcn-0005d0-Vn; Sun, 26 Jan 2014 12:36:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org, bug-cc-mode@gnu.org Resent-Date: Sun, 26 Jan 2014 17:36:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 16526 X-GNU-PR-Package: emacs,cc-mode X-GNU-PR-Keywords: Original-Received: via spool by 16526-submit@debbugs.gnu.org id=B16526.139075772621585 (code B ref 16526); Sun, 26 Jan 2014 17:36:01 +0000 Original-Received: (at 16526) by debbugs.gnu.org; 26 Jan 2014 17:35:26 +0000 Original-Received: from localhost ([127.0.0.1]:36782 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1W7TcC-0005c2-FE for submit@debbugs.gnu.org; Sun, 26 Jan 2014 12:35:25 -0500 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:53689) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1W7TcA-0005bn-7H for 16526@debbugs.gnu.org; Sun, 26 Jan 2014 12:35:23 -0500 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0N0000F00RA6XE00@a-mtaout20.012.net.il> for 16526@debbugs.gnu.org; Sun, 26 Jan 2014 19:35:20 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0N0000FLPRIVR650@a-mtaout20.012.net.il>; Sun, 26 Jan 2014 19:35:20 +0200 (IST) In-reply-to: <20140125202721.GA3630@acm.acm> X-012-Sender: halo1@inter.net.il 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:84046 Archived-At: > Date: Sat, 25 Jan 2014 20:27:21 +0000 > Cc: 16526@debbugs.gnu.org > From: Alan Mackenzie > > If I've understood correctly, I think the root cause of the slowness is > the lack of optimisation of find_defun_start when open-paren-etc. is nil > - it brutally returns BOB, no matter what. FWIW, I don't think this is the culprit, at least not directly. Why does CC Mode fontification code decide to scan the buffer backwards from EOB, when point is at BOB, is a much more relevant question, so it seems.