From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: YAMAMOTO Mitsuharu Newsgroups: gmane.emacs.bugs Subject: bug#28312: 25.2; Arabic script changes when scrolling Date: Fri, 01 Sep 2017 16:36:13 +0900 Organization: Faculty of Science, Chiba University Message-ID: References: <83lgly29zf.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII X-Trace: blaine.gmane.org 1504251446 31407 195.159.176.226 (1 Sep 2017 07:37:26 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 1 Sep 2017 07:37:26 +0000 (UTC) User-Agent: Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.8 (=?UTF-8?Q?Shij=C5=8D?=) APEL/10.6 Emacs/22.3 (sparc-sun-solaris2.8) MULE/5.0 (SAKAKI) Cc: 28312@debbugs.gnu.org, Nick Helm To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Sep 01 09:37:21 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dngVp-0007Pb-CQ for geb-bug-gnu-emacs@m.gmane.org; Fri, 01 Sep 2017 09:37:09 +0200 Original-Received: from localhost ([::1]:51126 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dngVw-0004uB-85 for geb-bug-gnu-emacs@m.gmane.org; Fri, 01 Sep 2017 03:37:16 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:33355) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dngVn-0004rh-2W for bug-gnu-emacs@gnu.org; Fri, 01 Sep 2017 03:37:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dngVi-0003uU-ON for bug-gnu-emacs@gnu.org; Fri, 01 Sep 2017 03:37:07 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:58497) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dngVi-0003uQ-LB for bug-gnu-emacs@gnu.org; Fri, 01 Sep 2017 03:37:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1dngVh-0002oF-LI for bug-gnu-emacs@gnu.org; Fri, 01 Sep 2017 03:37:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: YAMAMOTO Mitsuharu Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 01 Sep 2017 07:37:01 +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: Original-Received: via spool by 28312-submit@debbugs.gnu.org id=B28312.150425138010746 (code B ref 28312); Fri, 01 Sep 2017 07:37:01 +0000 Original-Received: (at 28312) by debbugs.gnu.org; 1 Sep 2017 07:36:20 +0000 Original-Received: from localhost ([127.0.0.1]:38945 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dngV2-0002nF-5L for submit@debbugs.gnu.org; Fri, 01 Sep 2017 03:36:20 -0400 Original-Received: from mathmail.math.s.chiba-u.ac.jp ([133.82.132.2]:54407) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dngUz-0002n5-IZ for 28312@debbugs.gnu.org; Fri, 01 Sep 2017 03:36:18 -0400 Original-Received: from fermat1.math.s.chiba-u.ac.jp (fermat [192.168.32.10]) by mathmail.math.s.chiba-u.ac.jp (Postfix) with ESMTP id CE6F8F0910; Fri, 1 Sep 2017 16:36:13 +0900 (JST) (envelope-from mituharu@math.s.chiba-u.ac.jp) In-Reply-To: <83lgly29zf.fsf@gnu.org> 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: 208.118.235.43 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:136434 Archived-At: >>>>> On Fri, 01 Sep 2017 09:45:08 +0300, Eli Zaretskii said: >> With bidi enabled, Arabic text changes unexpectedly when scrolling >> or moving point with the mouse. >> >> Recipe: Emacs -Q C-h h ;visit HELLO file ;use the mouse to scroll >> slowly >> >> Observe the text on the line that starts with the word Arabic. As >> the buffer scrolls, some of the characters in the Arabic >> representations of the words "Arabic" and "Hello" change between at >> least two glyphs. > I don't see this here, but I'm not on Darwin. Can anyone reproduce > this on GNU/Linux? I could reproduce a similar effect also on Darwin, but a different font backend driver (xft with libotf 0.9.3, m17n lib/db 1.7.0). 1. emacs -Q & 2. M-x describe-language-environment RET Arabic RET 3. Press and release the mouse button around the Arabic sample text. (say, "Arabic" to the left) The appearance of the sample text changes if I press the button, and it changes back again when I release it. The font used for displaying Arabic characters is "Arial Unicode MS". YAMAMOTO Mitsuharu mituharu@math.s.chiba-u.ac.jp