From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.devel Subject: Re: Pixel-based display functions Date: Mon, 09 Feb 2015 15:12:19 +1100 Message-ID: <878ug72064.fsf@building.gnus.org> References: <54CE2187.9070003@gmx.at> <83lhkhiq8t.fsf@gnu.org> <54CE54A3.1020707@gmx.at> <838ughilmo.fsf@gnu.org> <54CE6BD2.8000402@gmx.at> <8361bliin0.fsf@gnu.org> <83386piiby.fsf@gnu.org> <87oap9yoti.fsf@building.gnus.org> <874mqzvnwo.fsf@building.gnus.org> <83h9uzeb4a.fsf@gnu.org> <87bnl7jrr7.fsf@building.gnus.org> <831tm3dt8u.fsf@gnu.org> <87k2zvgj4d.fsf@building.gnus.org> <83siejcahb.fsf@gnu.org> <83sieiar6i.fsf@gnu.org> <83oap5c480.fsf@gnu.org> <87d25lc3xu.fsf@building.gnus.org> <877fvtc2qj.fsf@building.gnus.org> <83wq3s9rmr.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1423455350 6990 80.91.229.3 (9 Feb 2015 04:15:50 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 9 Feb 2015 04:15:50 +0000 (UTC) Cc: rudalics@gmx.at, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Feb 09 05:15:49 2015 Return-path: Envelope-to: ged-emacs-devel@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 1YKflE-00054f-LT for ged-emacs-devel@m.gmane.org; Mon, 09 Feb 2015 05:15:48 +0100 Original-Received: from localhost ([::1]:58781 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YKflD-0000fr-Lw for ged-emacs-devel@m.gmane.org; Sun, 08 Feb 2015 23:15:47 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:48226) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YKfkr-0000ed-4q for emacs-devel@gnu.org; Sun, 08 Feb 2015 23:15:26 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YKfkq-00019m-91 for emacs-devel@gnu.org; Sun, 08 Feb 2015 23:15:25 -0500 Original-Received: from smtp.syd.comcen.com.au ([203.23.236.77]:1212) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YKfkl-00016q-IN; Sun, 08 Feb 2015 23:15:20 -0500 Original-Received: from building.gnus.org ([27.96.197.126]) by smtp.syd.comcen.com.au (8.13.4/8.12.9) with ESMTP id t194COC3057176; Mon, 9 Feb 2015 15:12:25 +1100 (EST) In-Reply-To: <83wq3s9rmr.fsf@gnu.org> (Eli Zaretskii's message of "Sun, 08 Feb 2015 20:37:16 +0200") User-Agent: Gnus/5.130012 (Ma Gnus v0.12) Emacs/25.0.50 (gnu/linux) X-comcen-MailScanner-Information: Please contact the ISP for more information X-comcen-MailScanner: Found to be clean X-comcen-MailScanner-SpamCheck: not spam, SpamAssassin (not cached, score=0.122, required 4, AWL 0.02, BAYES_50 0.00, RDNS_NONE 0.10) X-comcen-MailScanner-From: larsi@gnus.org X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 203.23.236.77 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:182658 Archived-At: Eli Zaretskii writes: > I think I can make it faster if we add an additional optional argument > that tells vertical-motion the X coordinate at point. vertical-motion > invests a lot of cycles in finding a place whose X coordinate is > known, so providing that for its starting point will avoid all that > effort. Will this help you, i.e. can you provide such a value with > each call? Sure, I would normally call `vertical-motion' from `beginning-of-line' (that is, I'm currently calling it from the first character on the line, because that's faster), so I could pass in 0 as the X coordinate. -- (domestic pets only, the antidote for overdose, milk.) bloggy blog http://lars.ingebrigtsen.no/