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#57072: [BUG] update-glyphless-char-display and variation selectors Date: Wed, 10 Aug 2022 16:10:46 +0300 Message-ID: <83sfm4qm5l.fsf@gnu.org> References: <83edxpvec4.fsf@gnu.org> <83zggdtmg0.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="27612"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 57072@debbugs.gnu.org To: Axel Svensson Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Aug 10 15:40:55 2022 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 1oLlx9-00072l-Do for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 10 Aug 2022 15:40:55 +0200 Original-Received: from localhost ([::1]:39528 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oLlx8-0006bG-6o for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 10 Aug 2022 09:40:54 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:52410) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oLlVD-0004yh-H0 for bug-gnu-emacs@gnu.org; Wed, 10 Aug 2022 09:12:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:57131) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oLlVD-00034c-6Z for bug-gnu-emacs@gnu.org; Wed, 10 Aug 2022 09:12:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1oLlVD-0002tb-2M for bug-gnu-emacs@gnu.org; Wed, 10 Aug 2022 09:12:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 10 Aug 2022 13:12:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 57072 X-GNU-PR-Package: emacs Original-Received: via spool by 57072-submit@debbugs.gnu.org id=B57072.166013706411043 (code B ref 57072); Wed, 10 Aug 2022 13:12:03 +0000 Original-Received: (at 57072) by debbugs.gnu.org; 10 Aug 2022 13:11:04 +0000 Original-Received: from localhost ([127.0.0.1]:46876 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oLlUG-0002s3-BV for submit@debbugs.gnu.org; Wed, 10 Aug 2022 09:11:04 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:39242) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oLlUE-0002rN-3Q for 57072@debbugs.gnu.org; Wed, 10 Aug 2022 09:11:03 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:32856) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oLlU8-0002yf-Lj; Wed, 10 Aug 2022 09:10:56 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=/mR06I93Ki+MkKNO7q6MHvknr+qen3DRoZ+8LRhzzUw=; b=Q5QExdWMBFq+ BSYmtBEu6+G1ebGKdxE6lLeU5LkaILtiesG06ddgclY7h7SEoIdbyaxno546AwG7u/cFHTGMRoRsM gY7EXh2iiwHswA53WNNxxc5dIHF0sNLk+RxlhZMd+o+ohzi7/OO22UBAldN6dJZyns/ensmzEIyvS xw9XS/JAS/KtMdtLKyc1P/n8TrIfYc47VpvYD50IWdodxpc55zjtB4rsu836rRdp3dyVD2M5yPzA8 ztY+Nh2A6UQP7RXn3iG/K84GP7p/zOjX9t4gJz2js9zij2VXvI2IrtgyL0nmZwDdOpWqtyacEx/pE R+psOmgQhwORwaHTLN4UyA==; Original-Received: from [87.69.77.57] (port=1179 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oLlU8-0002BJ-5h; Wed, 10 Aug 2022 09:10:56 -0400 In-Reply-To: (message from Axel Svensson on Tue, 9 Aug 2022 22:33:40 +0200) 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:239294 Archived-At: > From: Axel Svensson > Date: Tue, 9 Aug 2022 22:33:40 +0200 > Cc: 57072@debbugs.gnu.org > > > Now, VS16 is almost always composed with preceding characters, so I > > think you can only see it as acronym if you deliberately force Emacs > > not to compose it, e.g. by preceding it with U+20DD COMBINING > > ENCLOSING CIRCLE, or precede it and follow it by U+200C ZERO WIDTH > > NON-JOINER, or disable auto-composition-mode. > > - Preceding it with U+20DD still produces the empty box > - Preceding it and following it by U+200C still produces the empty box > - Disabling auto-composition-mode produces the "VS16" acronym. Yes, I think this is because of the special composition rules we have for VS16 (which are required to display Emoji sequences correctly).