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#26333: 26.0.50; Hang when displaying some special characters for the first time Date: Sun, 23 Jan 2022 18:44:59 +0200 Message-ID: <83fspel7uc.fsf@gnu.org> References: <87pogwrl30.fsf@bistromath> <87tudu77g4.fsf@gnus.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="40603"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 26333@debbugs.gnu.org, steven@stebalien.com To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Jan 23 17:47:19 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 1nBg1P-000AMe-CN for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 23 Jan 2022 17:47:19 +0100 Original-Received: from localhost ([::1]:56744 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nBg1O-0002HN-C8 for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 23 Jan 2022 11:47:18 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:53254) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nBg0A-000279-Uk for bug-gnu-emacs@gnu.org; Sun, 23 Jan 2022 11:46:03 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:48142) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nBg0A-0001TP-LI for bug-gnu-emacs@gnu.org; Sun, 23 Jan 2022 11:46:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1nBg0A-0005D7-Hp for bug-gnu-emacs@gnu.org; Sun, 23 Jan 2022 11:46:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 23 Jan 2022 16:46:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 26333 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 26333-submit@debbugs.gnu.org id=B26333.164295635319981 (code B ref 26333); Sun, 23 Jan 2022 16:46:02 +0000 Original-Received: (at 26333) by debbugs.gnu.org; 23 Jan 2022 16:45:53 +0000 Original-Received: from localhost ([127.0.0.1]:41044 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nBg00-0005CD-Np for submit@debbugs.gnu.org; Sun, 23 Jan 2022 11:45:52 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:52386) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nBfzz-0005Bl-1S for 26333@debbugs.gnu.org; Sun, 23 Jan 2022 11:45:51 -0500 Original-Received: from [2001:470:142:3::e] (port=43462 helo=fencepost.gnu.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nBfzt-0001QX-Ma; Sun, 23 Jan 2022 11:45:45 -0500 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=NQs3fXwetOEEudgUnPU9INgIpm+9IiYzvHpMKUMmqhY=; b=etkRAkUSuiA8pcHmCtOk 4vPE8SIViE/9BTvIx9iEpvnRq8FNWZi8rpm6moJ/aiQYNhet8qk7FhJPKZT9t8RLvXafp1B6/b90Y e27NAsOOxHjITeGQqZPbOOWZgQkyyNDB8xEbL+Ow4FEDXjkUbWjEUgu6FvwSo9um2BQ3juZeIsYf6 o/7g9x5yrciCSv1P4IzqLrKkk9YxQ8glzRJdzWO1xmGC9HpEYgafRFMpr+bhXQ3yOLuxeCRnt7adY U4J2BG0un5HA26nFM7hi0uEaWH3q67/SDWNbENvGxtl+UAKFBDY9i3l2NRBqHW3juhoR5p6j/qMHI 9juK4kx6tqBd5g==; Original-Received: from [87.69.77.57] (port=3684 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 1nBfzV-0007Ra-NX; Sun, 23 Jan 2022 11:45:45 -0500 In-Reply-To: <87tudu77g4.fsf@gnus.org> (message from Lars Ingebrigtsen on Sun, 23 Jan 2022 17:17:15 +0100) 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:224944 Archived-At: > From: Lars Ingebrigtsen > Date: Sun, 23 Jan 2022 17:17:15 +0100 > Cc: 26333@debbugs.gnu.org > > Steven Allen writes: > > > 1. Start `emacs -Q` (GUI mode, GTK3). > > 2. Open a scratch buffer. > > 3. Insert a MATHMATICAL SANS-SERIF BOLD SMALL LAMBDA (0x1D77A): 𝝺 > > > > The first time this character is displayed, Emacs hangs for ~15 seconds > > pegging the CPU at 100%. Unfortunately, the profiler doesn't seem to > > notice/record this hang. > > (I'm going through old bug reports that unfortunately weren't resolved > at the time.) > > I'm unable to reproduce this problem in Emacs 28, but then again, this > problem seems to rely on a particular set of fonts being installed. It could be that those 15 sec is what Emacs needs to search the available fonts before it finds the one that can display the character.