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#18856: 24.4; *grep* output buffer not getting fontified when jit-lock-defer-time is used Date: Wed, 29 Oct 2014 16:16:29 +0200 Message-ID: <83vbn30xmq.fsf@gnu.org> References: <87a94h2tpf.fsf@engster.org> <838uk02i9j.fsf@gnu.org> <831tps2dy7.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1414592246 18838 80.91.229.3 (29 Oct 2014 14:17:26 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 Oct 2014 14:17:26 +0000 (UTC) Cc: 18856@debbugs.gnu.org, deng@randomsample.de To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Oct 29 15:17:16 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 1XjU3o-0000A0-4T for geb-bug-gnu-emacs@m.gmane.org; Wed, 29 Oct 2014 15:17:16 +0100 Original-Received: from localhost ([::1]:46439 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XjU3n-0000Bt-MT for geb-bug-gnu-emacs@m.gmane.org; Wed, 29 Oct 2014 10:17:15 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:44583) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XjU3f-0000BS-MB for bug-gnu-emacs@gnu.org; Wed, 29 Oct 2014 10:17:12 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XjU3a-0002kg-Re for bug-gnu-emacs@gnu.org; Wed, 29 Oct 2014 10:17:07 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:46784) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XjU3a-0002kP-PU for bug-gnu-emacs@gnu.org; Wed, 29 Oct 2014 10:17:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1XjU3a-0001HA-E9 for bug-gnu-emacs@gnu.org; Wed, 29 Oct 2014 10:17:02 -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, 29 Oct 2014 14:17:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18856 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 18856-submit@debbugs.gnu.org id=B18856.14145922044877 (code B ref 18856); Wed, 29 Oct 2014 14:17:02 +0000 Original-Received: (at 18856) by debbugs.gnu.org; 29 Oct 2014 14:16:44 +0000 Original-Received: from localhost ([127.0.0.1]:38882 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XjU3H-0001Gb-P5 for submit@debbugs.gnu.org; Wed, 29 Oct 2014 10:16:44 -0400 Original-Received: from mtaout27.012.net.il ([80.179.55.183]:54002) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XjU3E-0001GH-90 for 18856@debbugs.gnu.org; Wed, 29 Oct 2014 10:16:41 -0400 Original-Received: from conversion-daemon.mtaout27.012.net.il by mtaout27.012.net.il (HyperSendmail v2007.08) id <0NE700I00LV72700@mtaout27.012.net.il> for 18856@debbugs.gnu.org; Wed, 29 Oct 2014 16:11:35 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by mtaout27.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NE700H0SM3B2U20@mtaout27.012.net.il>; Wed, 29 Oct 2014 16:11:35 +0200 (IST) In-reply-to: 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:95242 > From: Stefan Monnier > Cc: deng@randomsample.de, 18856@debbugs.gnu.org > Date: Wed, 29 Oct 2014 00:06:14 -0400 > > >> To only defer fontification when we know "for sure" that the user is > >> waiting for further processing. > > Sorry, you lost me. When input is pending, what further processing is > > the user waiting for? > > The user is waiting for Emacs to process the input that he's already sent. Using an idle timer does that, right? > > I don't think this is too high a price. First, as Alain established, > > what takes 90% of the time is not redisplay, but fontifications, and > > those are run only once. > > This 90% is for CC-mode, where font-lock is particularly expensive. Yes, that's right. > > And second, the 2nd redisplay will only redraw the portions that were > > fontified, not the entire window. So this is not "twice", but more > > like 1.2 times. > > The 1st redisplay also only redrew the portion that was modified, which > is pretty close in many cases to the portion that later gets fontified. I was thinking about scrolling with C-v, in which case the first redisplay redraws almost the entire window.