From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Stephen Berman Newsgroups: gmane.emacs.bugs Subject: bug#14461: 24.3.50; bad display for 'space' + (U+0336) unicode combination Date: Sat, 17 Aug 2019 15:50:20 +0200 Message-ID: <87r25jucir.fsf@gmx.net> References: <519f7a1c.0324b40a.4997.ffff96ea@mx.google.com> <87woff117q.fsf@mouse.gnus.org> <871rxmiyyi.fsf@gmx.net> <5d552da4.1c69fb81.c51aa.76af@mx.google.com> <87wofehasr.fsf@gmx.net> <83d0h4ngrx.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="44594"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) Cc: larsi@gnus.org, cedric.chepied@gmail.com, 14461@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Aug 17 15:51:25 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 1hyz77-000BSj-Nr for geb-bug-gnu-emacs@m.gmane.org; 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Sat, 17 Aug 2019 09:51:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Stephen Berman Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 17 Aug 2019 13:51:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 14461 X-GNU-PR-Package: emacs Original-Received: via spool by 14461-submit@debbugs.gnu.org id=B14461.15660498297311 (code B ref 14461); Sat, 17 Aug 2019 13:51:01 +0000 Original-Received: (at 14461) by debbugs.gnu.org; 17 Aug 2019 13:50:29 +0000 Original-Received: from localhost ([127.0.0.1]:55419 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hyz6C-0001tr-QV for submit@debbugs.gnu.org; Sat, 17 Aug 2019 09:50:29 -0400 Original-Received: from mout.gmx.net ([212.227.15.19]:46539) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hyz6B-0001tY-Cq for 14461@debbugs.gnu.org; Sat, 17 Aug 2019 09:50:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1566049821; bh=I1tA5tVpUC45w7ikg/CiRGl8wqL9NY4d0w0t0XyIZhA=; h=X-UI-Sender-Class:From:To:Cc:Subject:References:Date:In-Reply-To; b=loI7/7w8NkfmwjHzrFZO4UneGX2wqS8HqliaCQSCfS6RkH+eWOS9jQiSwuA2TGTl1 t5iXtfJpSJHNMHqtOHiaiWUxiyaNfGk4cEuujCg9+PGOBt4SGSBzLZ7MwZClqVVfje AAkuwiMmL9F5LZD60KfbkHpmoSdxe2Sjyb+8VDsw= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Original-Received: from strobe-lfs84 ([94.220.121.66]) by mail.gmx.com (mrgmx003 [212.227.17.190]) with ESMTPSA (Nemesis) id 0M92ZJ-1i6zz60XuP-00CQjc; Sat, 17 Aug 2019 15:50:21 +0200 In-Reply-To: <83d0h4ngrx.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 17 Aug 2019 15:00:18 +0300") X-Provags-ID: V03:K1:KKurtB9Jt7kZ5nrR5TGEBwmhlY93g4HpAsljuBhKTNfuaDZJebl eSpGnRAuhZ7Is8uX3JUJtCWrlD1gb0uL9VUkePOFFWo/hKG+98FMkdku3/z+r8bdB7V+4me f+YAEM9s3jjMT07Qs1tL54jF0yH/O0YYY1ioNSdVX9rReGBP7n88TDZZAXq/DViD9CCWYlb V0ivyQ7wOYvPFpIowl8Lg== X-UI-Out-Filterresults: notjunk:1;V03:K0:yyc6fXFazSE=:Hs3VC4WLQFTwwy2Ru9JyGw QDbV2tDpLSuI9DHhPzDzXycUr6EjhnYGhA3Rnp127Ilrg1thZrrnHiSRqao5+8OZ2xewd5RCZ I/8VVPAivfKiW8txvQY5Hbl6h7vdybmZXkblPSFhGqlCbh0scNSsv2q9lPqHb7tBWCCDFPAqI alqP0++4t0OHLIyJ577k10NRyhmG71FjiOt0zngVTsiCH79q52Yf1+UjsRDhDXf99MpxcH0et NVyXsuPqtaLKsKUeA3/OTNelmjyvcSQdsap+iaLQ1g4KeCyrcrEYUER/6mbKiwxCa0jN2NR4v acE1PQt0uttVAyXzPxa3HZMfnpWa5z8d2wRQdzGbbsXjwMT+0NdAXre89BFeC45MZCx5abUW5 YjFT4yGQwoy7adgLg3ZFFa+7DkG4xdGrgG9yZPgf3i4MkBBFVdBIsxvvoD6YfQl3Ykg4N7aha Wcqp+t7+pr5C/1xEaoMcp8yxmyWLnD/R9h1YPloWePJWw4AOgMY+yG/bKG3BSpFyVmxMPpObh 6Koxn2HhGDDPzM4p1a03Z+Nl9Ws/3iBJQ4/fRBfQOQdEOsZhAPpxpMOF0WU7ulYq5AjrFicN6 4AZkl6d7ayiejFUWrJG5rrUFT6Een1mQO6er4Kh4s3XSkeJhs9Oz1+sJ1bKwQ0xGmSA7+0FEc 7DMkH7c36pjlJcmTsk0aMCLbmHcNyEncQbMVOXTr6BssC3WBeccyqpzIONbcPH2lqWQ4Sm3bo hL4WEAj3Ysc44EoYHVaBx238JvlNcPsaL5DnfvxMyjK5y9RX6mWq4lF4R4YahGBeyIsoldkH 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:165261 Archived-At: On Sat, 17 Aug 2019 15:00:18 +0300 Eli Zaretskii wrote: >> From: Stephen Berman >> Date: Thu, 15 Aug 2019 14:29:08 +0200 >> Cc: 14461@debbugs.gnu.org, Lars Ingebrigtsen >> >> ... I assume combining characters are always displayed after a space >> instead of over it -- at least that's what I see with e.g. U+0301 >> (COMBINING ACUTE ACCENT) and U+0302 (COMBINING CIRCUMFLEX ACCENT). >> That makes sense to me (otherwise, you couldn't visually distinguish >> e.g. the sequence 'aU+0301U+0302' from the sequence 'aU+0301 U+0302') > > I don't see why: the former should be displayed as a single grapheme > cluster, with both diacritics on top of a, whereas the latter should > be displayed as 2 grapheme clusters, with U+0302 on top of the SPC > character instead of on top of a. Hm, I chose COMBINING ACUTE ACCENT and COMBINING CIRCUMFLEX ACCENT more or less at random, but I do indeed see the sequence 'aU+0301U+0302' as two grapheme clusters (also with -Q): 'a' with an acute accent over it followed by a circumflex. In contrast, the sequences 'aU+0301U+0317' and 'aU+0302U+0317' are displayed as single grapheme clusters (317 is COMBINING ACUTE ACCENT BELOW). I also noticed that the seqence '-U+0301U+0302' is displayed as a dash followed by a single grapheme cluster of an acute accent and a circumflex; this holds for all nonalphabetic ASCII characters I tried and for some but not all non-ASCII alphabetic characters. So there seems to be some inconsistency in the display of combining characters. Steve Berman