From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Aura Kelloniemi Newsgroups: gmane.emacs.bugs Subject: bug#50865: 28.0.50; Emoji with emoji modifier in Linux console garbles emacs display Date: Tue, 28 Sep 2021 23:32:53 +0300 Message-ID: <87a6jw8mq2.fsf@sange.fi> References: <87o88chjsl.fsf@sange.fi> <83a6jwk7cb.fsf@gnu.org> <87ilyk8wu2.fsf@sange.fi> <835yukk44q.fsf@gnu.org> <87fsto8unj.fsf@sange.fi> <8335pok0pv.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="33872"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 50865@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Sep 28 22:34:26 2021 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 1mVJo1-0008Zx-JB for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 28 Sep 2021 22:34:25 +0200 Original-Received: from localhost ([::1]:48074 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mVJnz-00020Z-N2 for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 28 Sep 2021 16:34:23 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:58984) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mVJnh-0001zw-JQ for bug-gnu-emacs@gnu.org; Tue, 28 Sep 2021 16:34:05 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:35587) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mVJne-0006jB-27 for bug-gnu-emacs@gnu.org; Tue, 28 Sep 2021 16:34:05 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mVJnd-0007nz-LO for bug-gnu-emacs@gnu.org; Tue, 28 Sep 2021 16:34:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Aura Kelloniemi Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 28 Sep 2021 20:34:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 50865 X-GNU-PR-Package: emacs Original-Received: via spool by 50865-submit@debbugs.gnu.org id=B50865.163286118229924 (code B ref 50865); Tue, 28 Sep 2021 20:34:01 +0000 Original-Received: (at 50865) by debbugs.gnu.org; 28 Sep 2021 20:33:02 +0000 Original-Received: from localhost ([127.0.0.1]:47130 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mVJmg-0007mQ-B4 for submit@debbugs.gnu.org; Tue, 28 Sep 2021 16:33:02 -0400 Original-Received: from smtp.sange.fi ([185.87.108.151]:60339) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mVJmd-0007m7-FK for 50865@debbugs.gnu.org; Tue, 28 Sep 2021 16:33:00 -0400 Original-Received: from 88-114-110-12.elisa-laajakaista.fi ([88.114.110.12] helo=solaria) by oiva.sange.fi with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1mVJmZ-000178-R6; Tue, 28 Sep 2021 23:32:57 +0300 In-Reply-To: <8335pok0pv.fsf@gnu.org> 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:215800 Archived-At: On 2021-09-28 at 21:35 +0300, Eli Zaretskii wrote: > That should not be that way. Some characters are double-width, and > should take up 2 columns on display. I noticed, that Linux console does not understand most of the zero-width characters either. It happily prints most of the code points in the list of zero-width characters. Of course they are printed just as diamonds, because Linux cannot store enough glyphs in its 512-glyph font space, but anyway it prints a diamond for such characters as . The character range \y200B-\u200F seems to be an exception here. When I try to print one of these characters on a Linxu VT, it really prints nothing. When I insert zero-width characters in Emacs, the diamonds representing the characters are printed interspersed by the padding spaces added by emacs. The cursor is left behind the extending line of characters as a type, because Emacs thinks, that the zero-width characters really do not print anything, even though they do. I believe that the one viable solution is to make char-width-table a terminal local variable, so that there can be a simplified version for terminals that don't understand Unicode correctly. -- Aura