From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Tobias C. Rittweiler" Newsgroups: gmane.emacs.devel Subject: Re: `font-lock-extend-region-functions' vs. `font-lock-extend-after-change-region-function' Date: Wed, 29 Apr 2009 19:40:06 +0200 Message-ID: <87ocufz7d5.fsf@freebits.de> References: <87prewlrl9.fsf@freebits.de> <873abr211r.fsf@freebits.de> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1241027124 7023 80.91.229.12 (29 Apr 2009 17:45:24 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 Apr 2009 17:45:24 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Apr 29 19:45:15 2009 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1LzDqM-0006nR-Es for ged-emacs-devel@m.gmane.org; Wed, 29 Apr 2009 19:45:14 +0200 Original-Received: from localhost ([127.0.0.1]:46257 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LzDqL-0005dm-UB for ged-emacs-devel@m.gmane.org; Wed, 29 Apr 2009 13:45:13 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LzDqG-0005dR-BK for emacs-devel@gnu.org; Wed, 29 Apr 2009 13:45:08 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LzDqE-0005d4-K7 for emacs-devel@gnu.org; Wed, 29 Apr 2009 13:45:07 -0400 Original-Received: from [199.232.76.173] (port=52735 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LzDqE-0005cx-D1 for emacs-devel@gnu.org; Wed, 29 Apr 2009 13:45:06 -0400 Original-Received: from main.gmane.org ([80.91.229.2]:33289 helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1LzDqD-0002ad-SW for emacs-devel@gnu.org; Wed, 29 Apr 2009 13:45:06 -0400 Original-Received: from root by ciao.gmane.org with local (Exim 4.43) id 1LzDqA-0005aT-WD for emacs-devel@gnu.org; Wed, 29 Apr 2009 17:45:03 +0000 Original-Received: from host145.natpool.mwn.de ([138.246.7.145]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 29 Apr 2009 17:45:02 +0000 Original-Received: from tcr by host145.natpool.mwn.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 29 Apr 2009 17:45:02 +0000 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 18 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: host145.natpool.mwn.de User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/23.0.60 (gnu/linux) Cancel-Lock: sha1:8r/sKFzC3//uCcLdonY1dNjVLw8= X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:110551 Archived-At: Stefan Monnier writes: > > But the new region that EXTEND is called with begins at 523, and not 701 > > even though we processed the region between 523 and 701 already. > > This seems more inefficient than it needs to be if I'm not missing > > anything. > > You're not missing anything. It's an inefficiency in jit-lock, indeed. > jit-lock asks font-lock to highlight 1-523 and font-lock has no way to > tell jit-lock that the first call already highlighted 1-701, so next > time jit-lock needs highlighting it will do 523-1034 because it doesn't > know that 523-701 was done already. Is this intended to be fixed? For example, the extending of the font-lock region could be made a seperate step which `jit-lock-fontify-now' has to run explicitly. -T.