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#56808: 29.0.50; Elusive display problem on macOS Date: Thu, 28 Jul 2022 11:01:17 +0300 Message-ID: <83czdpacoi.fsf@gnu.org> References: <83r125ai2n.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="blaine.gmane.org:116.202.254.214"; logging-data="10003"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 56808@debbugs.gnu.org To: Gerd =?UTF-8?Q?M=C3=B6llmann?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Jul 28 10:03:15 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 1oGyUE-0002SY-Aa for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 28 Jul 2022 10:03:14 +0200 Original-Received: from localhost ([::1]:53428 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oGyU9-00044Z-Bb for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 28 Jul 2022 04:03:13 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:44940) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oGyT4-00042V-D8 for bug-gnu-emacs@gnu.org; Thu, 28 Jul 2022 04:02:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:39533) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oGyT4-00080g-1r for bug-gnu-emacs@gnu.org; Thu, 28 Jul 2022 04:02:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1oGyT3-0004GJ-SB for bug-gnu-emacs@gnu.org; Thu, 28 Jul 2022 04:02:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 28 Jul 2022 08:02:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 56808 X-GNU-PR-Package: emacs Original-Received: via spool by 56808-submit@debbugs.gnu.org id=B56808.165899527916323 (code B ref 56808); Thu, 28 Jul 2022 08:02:01 +0000 Original-Received: (at 56808) by debbugs.gnu.org; 28 Jul 2022 08:01:19 +0000 Original-Received: from localhost ([127.0.0.1]:57515 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oGySN-0004FC-Da for submit@debbugs.gnu.org; Thu, 28 Jul 2022 04:01:19 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:60058) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oGySM-0004Ex-1t for 56808@debbugs.gnu.org; Thu, 28 Jul 2022 04:01:18 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:45780) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oGySG-0007q7-NM; Thu, 28 Jul 2022 04:01:12 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=gUDVXeRHHHTUurJR5rNfVHRSqPWtyMlfasoXeOcdFI0=; b=E9sgjEYIrm1A5JzCdqwt SEFbr4U1CPmVlO/bZoDWgfvKOnfPhoCHbGDth3uXLAIIAnqI8lI3htBWlRbRO2LUA12Aja3trgNNZ 1s/OZcHtXs7ndxpsmSv7FIJwVpYCXj6GeLprvuu0IKBl0X3DLUNfturi3yBUz/0DL/bjVFJQLQxQl kP0CQEEuHqaPiApBJSxaIJzcVinm8xTg8lY7b2SNKZbbIUFwm2rJq0dmvGpRDoX7fO5fWM3K9K+K/ Z8Nmhm4VA4r/wuEOTXhuJNStjJ5mQGwcbTLihAt/Xdne1JBKrl9neD/NqdHg/lru+QCYH0QheFo9W cYRjurMdUeMEqg==; Original-Received: from [87.69.77.57] (port=2860 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 1oGySD-0004eG-Hj; Thu, 28 Jul 2022 04:01:12 -0400 In-Reply-To: (message from Gerd =?UTF-8?Q?M=C3=B6llmann?= on Thu, 28 Jul 2022 09:37:23 +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:238078 Archived-At: > From: Gerd Möllmann > Cc: 56808@debbugs.gnu.org > Date: Thu, 28 Jul 2022 09:37:23 +0200 > > My current kind of working hypothesis is that this is caused by > something in the "font department". When the problem is there, Emacs > seems to behave completely consistently, assuming that it has the wrong > value for the width of a space. > > For example, cursor movement in the wrongly displayed line, which should > be using the current glyph row. The cursor movement is entirely okay, > when a space were a bit wider than normal. From which I "conjecture" > that the width of the space in the glyph row is already wrong. If it's a font issue, "C-u C-x =" with the cursor on the space that is larger than normal could help by showing the font used for that space. > But then again, since the display of the run of spaces should be done as > a string of characters in the same face, I also "conjecture" that the > font of the face should be wrong. Which I find sort of strange. > Shouldn't then all characters have the wrong size, and things would > align again? If Emacs decided, for some reason, to use a different font for some character, it will generate a separate face for it, and that face is not exposed to Lisp. (Normally, this only happens for non-ASCII characters, though.) Btw, 'pgrow' shows the face ID as well, so it can tell.