From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Richard Wordingham Newsgroups: gmane.emacs.bugs Subject: bug#20173: 24.4; Rendering misallocates combining marks on ligatures Date: Fri, 27 Mar 2015 09:04:44 +0000 Message-ID: <20150327090444.322e6639@JRWUBU2> References: <20150323010626.530d3395@JRWUBU2> <83wq27raer.fsf@gnu.org> <20150323224107.4532b1cc@JRWUBU2> <837fu7qcx1.fsf@gnu.org> <20150324082828.6bad0649@JRWUBU2> <834mpaqqdx.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1427447215 20571 80.91.229.3 (27 Mar 2015 09:06:55 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 27 Mar 2015 09:06:55 +0000 (UTC) Cc: 20173@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Mar 27 10:06:44 2015 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1YbQDy-0005LF-1D for geb-bug-gnu-emacs@m.gmane.org; Fri, 27 Mar 2015 10:06:42 +0100 Original-Received: from localhost ([::1]:48965 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YbQDx-000198-90 for geb-bug-gnu-emacs@m.gmane.org; Fri, 27 Mar 2015 05:06:41 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:44213) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YbQCS-00074J-Et for bug-gnu-emacs@gnu.org; Fri, 27 Mar 2015 05:05:13 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YbQCN-00004r-BK for bug-gnu-emacs@gnu.org; Fri, 27 Mar 2015 05:05:08 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:48031) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YbQCN-0008Vt-7V for bug-gnu-emacs@gnu.org; Fri, 27 Mar 2015 05:05:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1YbQCM-0006Aj-MY for bug-gnu-emacs@gnu.org; Fri, 27 Mar 2015 05:05:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Richard Wordingham Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 27 Mar 2015 09:05:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 20173 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 20173-submit@debbugs.gnu.org id=B20173.142744709423709 (code B ref 20173); Fri, 27 Mar 2015 09:05:02 +0000 Original-Received: (at 20173) by debbugs.gnu.org; 27 Mar 2015 09:04:54 +0000 Original-Received: from localhost ([127.0.0.1]:37807 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1YbQCD-0006AK-KG for submit@debbugs.gnu.org; Fri, 27 Mar 2015 05:04:53 -0400 Original-Received: from know-smtprelay-omc-11.server.virginmedia.net ([80.0.253.75]:58090) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1YbQCA-0006A4-S3 for 20173@debbugs.gnu.org; Fri, 27 Mar 2015 05:04:51 -0400 Original-Received: from JRWUBU2 ([81.103.224.4]) by know-smtprelay-11-imp with bizsmtp id 8Z4k1q02406JmVd01Z4kqS; Fri, 27 Mar 2015 09:04:44 +0000 X-Originating-IP: [81.103.224.4] X-Spam: 0 X-Authority: v=2.0 cv=J/vyd3bS c=1 sm=1 a=pLuj3OkTrmEUIJBpyvkqVg==:17 a=kj9zAlcOel0A:10 a=NLZqzBF-AAAA:8 a=mDV3o1hIAAAA:8 a=glEgdktuV1PAvUaosNoA:9 a=CjuIK1q_8ugA:10 a=pLuj3OkTrmEUIJBpyvkqVg==:117 In-Reply-To: <834mpaqqdx.fsf@gnu.org> X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.10; i686-pc-linux-gnu) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:100970 Archived-At: On Tue, 24 Mar 2015 19:03:38 +0200 Eli Zaretskii wrote: > > Date: Tue, 24 Mar 2015 08:28:28 +0000 > > From: Richard Wordingham > > Cc: 20173@debbugs.gnu.org > > You might want to first check whether composed Arabic is > > usable. Doesn't making each word a grapheme cluster makes editing > > unpleasant? > I don't know; I don't speak or write any of the languages that use the > Arabic script. I expect the users that do to come up and ask for > features they miss. We already allow deletion of single codepoints, > even when they are composed; we might as well provide similar features > for movement or whatever. I forgot that grapheme clustering is done in m17n, not Emacs itself. The m17n code (in ARAB-OTF.flt) is reasonable - it clusters letters with combining marks. It *seems* I have a problem with tpu-forward-char and tpu-backward-char; it's as though there's an initialisation fault which stops them stepping through the Arabic compositions at first. It may be an issue with the presumably underlying forward-char and backward-char; I haven't investigated further. I'll have to record the exact actions provoking the problem before I formally record a bug. Richard.