From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David De La Harpe Golden Newsgroups: gmane.emacs.devel Subject: Re: moving point and scroll-conservatively Date: Sat, 26 Jun 2010 13:44:21 +0100 Message-ID: <4C25F625.6050205@harpegolden.net> References: <83pqzec9i8.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: dough.gmane.org 1277556276 26190 80.91.229.12 (26 Jun 2010 12:44:36 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Sat, 26 Jun 2010 12:44:36 +0000 (UTC) Cc: emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Jun 26 14:44:35 2010 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 4.69) (envelope-from ) id 1OSUkM-0008GM-0t for ged-emacs-devel@m.gmane.org; Sat, 26 Jun 2010 14:44:34 +0200 Original-Received: from localhost ([127.0.0.1]:38071 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OSUkL-00089V-Bx for ged-emacs-devel@m.gmane.org; Sat, 26 Jun 2010 08:44:33 -0400 Original-Received: from [140.186.70.92] (port=57850 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OSUkF-00089O-QU for emacs-devel@gnu.org; Sat, 26 Jun 2010 08:44:29 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OSUkE-00007B-MJ for emacs-devel@gnu.org; Sat, 26 Jun 2010 08:44:27 -0400 Original-Received: from harpegolden.net ([65.99.215.13]:40190) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OSUkC-00006d-Um; Sat, 26 Jun 2010 08:44:25 -0400 Original-Received: from [87.198.54.237] (87-198-54-237.ptr.magnet.ie [87.198.54.237]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "David De La Harpe Golden", Issuer "David De La Harpe Golden Personal CA rev 3" (verified OK)) by harpegolden.net (Postfix) with ESMTP id 7BF739C7F; Sat, 26 Jun 2010 13:44:22 +0100 (IST) User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100515 Icedove/3.0.4 In-Reply-To: <83pqzec9i8.fsf@gnu.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. 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:126432 Archived-At: On 26/06/10 12:34, Eli Zaretskii wrote: > Did any of you who set scroll-conservatively to most-positive-fixnum > notice that moving around an unmodified buffer became much slower, > since revno 100620, when point moves far away? > > For example, with this recipe: > > emacs -Q > M-: (setq scroll-conservatively most-positive-fixnum scroll-step 0) RET > C-x C-f xdisp.c > C-u 25000 M-g M-g > > it takes Emacs 17 seconds on my 3GHz machine to display xdisp.c around > line 25000, whereas it's instantaneous in Emacs 23.2. > Yes, that does appear slow, though taking ~ 10 seconds on my machine. > Btw, what do users of scroll-conservatively = most-positive-fixnum > want from C-v and PageDown keys? Is it okay to recenter in that case, > or do you want to see the cursor on the last screen line in that case > as well? (Emacs does not currently distinguish between these two > cases. In fact, it does not care at all which command caused point to > move.) > Well ... scroll-preserve-screen-position? That seems to be working anyway on pgup/dn, the point stays on the same screen line and I don't see recentering.