From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Kangas Newsgroups: gmane.emacs.bugs Subject: bug#17261: Some combining characters don't combine (Emacs 24 regression) Date: Sat, 21 Sep 2019 11:51:02 +0200 Message-ID: References: <20140413104944.1f919291@Newton> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="10229"; mail-complaints-to="usenet@blaine.gmane.org" Cc: Max Shinn , 17261@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Sep 21 11:52:14 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 1iBc3n-0002S4-Dj for geb-bug-gnu-emacs@m.gmane.org; Sat, 21 Sep 2019 11:52:11 +0200 Original-Received: from localhost ([::1]:40546 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iBc3l-0004oi-Ul for geb-bug-gnu-emacs@m.gmane.org; Sat, 21 Sep 2019 05:52:09 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:43112) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iBc3f-0004oW-Dj for bug-gnu-emacs@gnu.org; Sat, 21 Sep 2019 05:52:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iBc3e-0001ve-8F for bug-gnu-emacs@gnu.org; Sat, 21 Sep 2019 05:52:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:50352) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iBc3e-0001va-5J for bug-gnu-emacs@gnu.org; Sat, 21 Sep 2019 05:52:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iBc3e-0007YN-1Z for bug-gnu-emacs@gnu.org; Sat, 21 Sep 2019 05:52:02 -0400 X-Loop: help-debbugs@gnu.org In-Reply-To: <20140413104944.1f919291@Newton> Resent-From: Stefan Kangas Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 21 Sep 2019 09:52:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 17261 X-GNU-PR-Package: emacs Original-Received: via spool by 17261-submit@debbugs.gnu.org id=B17261.156905948028984 (code B ref 17261); Sat, 21 Sep 2019 09:52:01 +0000 Original-Received: (at 17261) by debbugs.gnu.org; 21 Sep 2019 09:51:20 +0000 Original-Received: from localhost ([127.0.0.1]:59173 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iBc2y-0007XQ-DW for submit@debbugs.gnu.org; Sat, 21 Sep 2019 05:51:20 -0400 Original-Received: from mail-pf1-f193.google.com ([209.85.210.193]:33601) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iBc2x-0007XE-GS for 17261@debbugs.gnu.org; Sat, 21 Sep 2019 05:51:19 -0400 Original-Received: by mail-pf1-f193.google.com with SMTP id q10so6205397pfl.0 for <17261@debbugs.gnu.org>; Sat, 21 Sep 2019 02:51:19 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc :content-transfer-encoding; bh=FyRvUgUqoV9tS/C+fMxF9xQZR21uCSZGB77785eetx0=; b=X2fzg8Em1fWQShNzpaY59+Z8kLAqpet+xVvUqPrxG5/axR19mOaOVCdXVyyMOiZC3r J8aBdBji5VtouuNHdvmq7pQ+x4OW109vArQtAXWDgXXAGdIVwmzfFGHFxcOKlBgSM4da ULnhUXFLinNO0fHSsZyOY44RxIQD4HjkqjDKMT9ajN6yOXTmcJcFn4OGN0nK4okSCKNi 1FSmgg4oCVxBboU9Crv/5zyuNEiTkfcxrGBetqMvybb4rlF0c1LdSpviBKOUrG78TmKZ qZVRw+E+dl6L1pnkdsGKvgPIwH7EpP/NkktDp+L1FuIdZDJ0h8PRLs4v34pa2UibU2Z+ ZB5Q== X-Gm-Message-State: APjAAAVyZhjCjr3SWXB1i62mQQg4W+LMJEZzdiU9v/qQkgJrAOpOnzYU 5CIP5B7rs3oFQyAOuGnUKYiye0Z7n831VEFxmU4= X-Google-Smtp-Source: APXvYqznEfj3uunk4xSNHxvPjHh2UmONSceO7o8lp2XWSNuex1wHPdd/TOomE8tyfVslo4w5oeN+Ge7OmDwkViQvwiQ= X-Received: by 2002:aa7:8009:: with SMTP id j9mr22100057pfi.107.1569059473762; Sat, 21 Sep 2019 02:51:13 -0700 (PDT) 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:166865 Archived-At: Eli Zaretskii writes: >> Date: Sun, 13 Apr 2014 10:49:44 -0500 >> From: Max Shinn >> >> Certain combining characters---such as the combining vector >> arrow (0x20D7, a=E2=83=97) and the combining circle (0x20DD, a=E2=83=9D)= ---do not >> combine properly under most fonts on Emacs 24.3.1 under Debian GNU/Linux >> x86_64, GTK 3.4.2. In Emacs 23.3.1, these characters worked properly >> under several fonts (for instance, Droid Sans Mono), whereas in Emacs >> 24, they only work properly with the FreeMono font. The precise >> behavior I am observing on Emacs 24 is where the base character and the >> combining character sit side-by-side instead of superimposed on one >> another. > > Looks like some side effect of changes in how we select fonts. Where > Emacs 23 would force the base character to use the font that could > display the combining character, Emacs 24 now does not, which disables > auto-composition because Emacs can only compose characters that come > from the same font. So the only way to display those characters as > composed is to select a buffer font that can display them. Does that mean that the behaviour is not a bug, or should it be fixed? Best regards, Stefan Kangas