From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#41645: 27.0.91; Combining Grapheme Joiner (#x34f) gui artifacts Date: Mon, 01 Jun 2020 22:35:17 +0300 Message-ID: <83imgaeg0a.fsf@gnu.org> References: <83zh9merd4.fsf@gnu.org> <83wo4qepab.fsf@gnu.org> <83lfl6eiod.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="13672"; mail-complaints-to="usenet@ciao.gmane.io" Cc: dfussner@googlemail.com, 41645@debbugs.gnu.org To: pipcet@gmail.com Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Jun 01 21:36:54 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 1jfqEv-0003U7-8Q for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 01 Jun 2020 21:36:53 +0200 Original-Received: from localhost ([::1]:51678 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jfqEu-00012p-AU for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 01 Jun 2020 15:36:52 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:48416) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jfqE6-0000U1-25 for bug-gnu-emacs@gnu.org; Mon, 01 Jun 2020 15:36:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:53732) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jfqE5-0002Q8-Nu for bug-gnu-emacs@gnu.org; Mon, 01 Jun 2020 15:36:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1jfqE5-0005iJ-Je for bug-gnu-emacs@gnu.org; Mon, 01 Jun 2020 15:36:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 01 Jun 2020 19:36:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 41645 X-GNU-PR-Package: emacs Original-Received: via spool by 41645-submit@debbugs.gnu.org id=B41645.159104014121933 (code B ref 41645); Mon, 01 Jun 2020 19:36:01 +0000 Original-Received: (at 41645) by debbugs.gnu.org; 1 Jun 2020 19:35:41 +0000 Original-Received: from localhost ([127.0.0.1]:37045 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jfqDl-0005hh-0O for submit@debbugs.gnu.org; Mon, 01 Jun 2020 15:35:41 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:40898) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jfqDa-0005hM-0U for 41645@debbugs.gnu.org; Mon, 01 Jun 2020 15:35:39 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:55948) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jfqDU-0002K9-MV; Mon, 01 Jun 2020 15:35:24 -0400 Original-Received: from [176.228.60.248] (port=4233 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1jfqDU-0001lI-1a; Mon, 01 Jun 2020 15:35:24 -0400 In-Reply-To: <83lfl6eiod.fsf@gnu.org> (message from Eli Zaretskii on Mon, 01 Jun 2020 21:37:38 +0300) 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:181369 Archived-At: > Date: Mon, 01 Jun 2020 21:37:38 +0300 > From: Eli Zaretskii > Cc: dfussner@googlemail.com, 41645@debbugs.gnu.org > > Composed with the following character(s) "͏" using this font: > harfbuzz:-outline-Code2000-normal-normal-normal-*-16-*-*-*-p-*-iso8859-1 > by these glyphs: > [0 1 100 71 10 0 9 11 0 nil] > [0 1 847 3 6 0 1 0 1 [0 0 0]] > > Is what you see on your system similar? If so, which glyph is > zero-width, and why does it cause trouble on your system, but not on > mine? And another question: in the cases where you see artifacts, does the call to font-shape-gstring inside compose-gstring-for-graphic return nil or non-nil? IOW, is the shaper+font producing the composed glyph, or is that the fallback Lisp code in compose-gstring-for-graphic, because font-shape-gstring returns nil? Perhaps that's the reason for the differences between what you see and what I see.