From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#44784: Combining accent is not combining Date: Sun, 22 Nov 2020 17:28:08 +0200 Message-ID: <83k0udxvg7.fsf@gnu.org> References: <87h7piy9qq.fsf@mail.linkov.net> <83v9dyxyov.fsf@gnu.org> <87wnyephxc.fsf@mail.linkov.net> <83r1omxdvh.fsf@gnu.org> <87blfpvgy4.fsf@gmx.net> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="1202"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 44784@debbugs.gnu.org, juri@linkov.net To: Stephen Berman Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Nov 22 16:29:11 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kgrId-0000C1-0z for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 22 Nov 2020 16:29:11 +0100 Original-Received: from localhost ([::1]:38440 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kgrIc-00043W-3m for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 22 Nov 2020 10:29:10 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:54246) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kgrIV-00042y-Dx for bug-gnu-emacs@gnu.org; Sun, 22 Nov 2020 10:29:03 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:36537) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kgrIU-0000h3-1b for bug-gnu-emacs@gnu.org; Sun, 22 Nov 2020 10:29:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1kgrIT-0005I5-U1 for bug-gnu-emacs@gnu.org; Sun, 22 Nov 2020 10:29:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 22 Nov 2020 15:29:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 44784 X-GNU-PR-Package: emacs Original-Received: via spool by 44784-submit@debbugs.gnu.org id=B44784.160605890720291 (code B ref 44784); Sun, 22 Nov 2020 15:29:01 +0000 Original-Received: (at 44784) by debbugs.gnu.org; 22 Nov 2020 15:28:27 +0000 Original-Received: from localhost ([127.0.0.1]:48083 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kgrHv-0005HC-5S for submit@debbugs.gnu.org; Sun, 22 Nov 2020 10:28:27 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:35984) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kgrHt-0005Gv-2n for 44784@debbugs.gnu.org; Sun, 22 Nov 2020 10:28:25 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:45624) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kgrHm-0000Rw-Jc; Sun, 22 Nov 2020 10:28:18 -0500 Original-Received: from [176.228.60.248] (port=4739 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1kgrHk-0000PL-61; Sun, 22 Nov 2020 10:28:17 -0500 In-Reply-To: <87blfpvgy4.fsf@gmx.net> (message from Stephen Berman on Sun, 22 Nov 2020 11:12:03 +0100) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:193846 Archived-At: > From: Stephen Berman > Cc: Juri Linkov , 44784@debbugs.gnu.org > Date: Sun, 22 Nov 2020 11:12:03 +0100 > > > The 2 vectors you show above, let alone the "composed with" part, > > explicitly say they _were_ composed. So something else is going on > > here. > > I think it's a display problem with DejaVu Sans Mono, as you already > noted. I also see what Juri sees, but when the cursor appears to be > over the separately displayed accent, `C-u C-x =' says the character at > point is SPC. Right. I think the discussion on the HarfBuzz list to which I pointed explains what happens: the problematic fonts don't provide the information necessary to correctly locate the accent over some character (specifically, precomposed characters that are already accented). The [0 0 0] part of the second glyph in the composition info is a telltale sign of lack of that information: if you try the same with a font where display is correct, you will see that the first 2 components are non-zero (notably, the first component should be negative).