From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#28312: 25.2; Arabic script changes when scrolling Date: Tue, 11 Jun 2019 17:49:15 +0300 Message-ID: <83blz49nys.fsf@gnu.org> References: <83lgly29zf.fsf@gnu.org> <83h8wm24v9.fsf@gnu.org> <834l52stcy.fsf@gnu.org> <83pnnl9wrd.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="40294"; mail-complaints-to="usenet@blaine.gmane.org" Cc: 28312@debbugs.gnu.org To: nick@tenpoint.co.nz Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Jun 11 17:04:12 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1haiJn-000AFr-5V for geb-bug-gnu-emacs@m.gmane.org; Tue, 11 Jun 2019 17:04:11 +0200 Original-Received: from localhost ([::1]:59966 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1haiJg-00020A-TX for geb-bug-gnu-emacs@m.gmane.org; Tue, 11 Jun 2019 11:04:04 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:48200) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1haiGg-0007fz-65 for bug-gnu-emacs@gnu.org; Tue, 11 Jun 2019 11:00:59 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hai67-0007cN-P6 for bug-gnu-emacs@gnu.org; Tue, 11 Jun 2019 10:50:09 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:46421) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hai65-0007bX-Tv for bug-gnu-emacs@gnu.org; Tue, 11 Jun 2019 10:50:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1hai65-0006po-PY for bug-gnu-emacs@gnu.org; Tue, 11 Jun 2019 10:50:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 11 Jun 2019 14:50:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 28312 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch Original-Received: via spool by 28312-submit@debbugs.gnu.org id=B28312.156026457226218 (code B ref 28312); Tue, 11 Jun 2019 14:50:01 +0000 Original-Received: (at 28312) by debbugs.gnu.org; 11 Jun 2019 14:49:32 +0000 Original-Received: from localhost ([127.0.0.1]:59962 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hai5c-0006oo-0P for submit@debbugs.gnu.org; Tue, 11 Jun 2019 10:49:32 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:37175) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hai5Z-0006ob-HF for 28312@debbugs.gnu.org; Tue, 11 Jun 2019 10:49:29 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:47432) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hai5R-0007Id-Kh; Tue, 11 Jun 2019 10:49:23 -0400 Original-Received: from [176.228.60.248] (port=4219 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1hai5N-0002xc-3e; Tue, 11 Jun 2019 10:49:17 -0400 In-reply-to: <83pnnl9wrd.fsf@gnu.org> (message from Eli Zaretskii on Mon, 10 Jun 2019 20:27:02 +0300) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 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" Xref: news.gmane.org gmane.emacs.bugs:160375 Archived-At: > Date: Mon, 10 Jun 2019 20:27:02 +0300 > From: Eli Zaretskii > Cc: 28312@debbugs.gnu.org > > > Next, I opened a file written entirely in Arabic (~3000 words). Without > > the patch, scrolling works as expected in all cases I tried. With the > > patch applied, scrolling also works as expected unless pixel-scroll-mode > > is active and scrolling is done with the mouse. With that mode active, > > mouse scrolling introduces lag that takes 3–4 seconds to recover after > > each scroll action. I would describe the lag as significant. I did not > > notice the text changing when scrolling or clicking in this file. > > I'm working on a less expensive solution, stay tuned. I installed a solution that should be much less expensive, please take a look. If you still see lag in scrolling, try enabling garbage-collection-messages to see whether GC is the culprit; if it is, then raise gc-cons-threshold while testing, to exclude this factor's influence. Thanks.