From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Zhiwei Chen Newsgroups: gmane.emacs.bugs Subject: bug#51631: 29.0.50; cc-mode fontification makes CPU at 100% Date: Sun, 07 Nov 2021 09:55:12 +0800 Message-ID: <877ddk6873.fsf@gmail.com> References: <87k0hl4kes.fsf@gmail.com> <87y2619lnw.fsf@gnus.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="16920"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: 51631@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Nov 07 02:56:17 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 1mjXPt-0004Ej-Bl for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 07 Nov 2021 02:56:17 +0100 Original-Received: from localhost ([::1]:45726 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mjXPs-0003PQ-9O for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 06 Nov 2021 21:56:16 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:35188) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mjXPk-0003NU-Ve for bug-gnu-emacs@gnu.org; Sat, 06 Nov 2021 21:56:08 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:39759) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mjXPe-0004Po-T7 for bug-gnu-emacs@gnu.org; Sat, 06 Nov 2021 21:56:08 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mjXPe-0006Bd-SG for bug-gnu-emacs@gnu.org; Sat, 06 Nov 2021 21:56:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Zhiwei Chen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 07 Nov 2021 01:56:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 51631 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 51631-submit@debbugs.gnu.org id=B51631.163625012623713 (code B ref 51631); Sun, 07 Nov 2021 01:56:02 +0000 Original-Received: (at 51631) by debbugs.gnu.org; 7 Nov 2021 01:55:26 +0000 Original-Received: from localhost ([127.0.0.1]:51300 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mjXP3-0006AP-Vk for submit@debbugs.gnu.org; Sat, 06 Nov 2021 21:55:26 -0400 Original-Received: from mail-pf1-f181.google.com ([209.85.210.181]:43561) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mjXOz-0006A2-Dn for 51631@debbugs.gnu.org; Sat, 06 Nov 2021 21:55:25 -0400 Original-Received: by mail-pf1-f181.google.com with SMTP id n85so8064019pfd.10 for <51631@debbugs.gnu.org>; Sat, 06 Nov 2021 18:55:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version; bh=QmQZk7PEtsSE9PYCNI6NJp/cDGoIFjOdqFe943WTp7M=; b=cvyG+R9n4J05AhN2/88jp2hwvQnCkjBeLf+K9klqkRxDrNAEGRI/gFJ+GdP/rYWHHS rZRaoUr5hzv3qy9j6dL4m/+D4s7ar/IgK8oKMw7/gZnm5o7EAiy4oncADc+tkZy8g0La ykYmOeErMqoK8pGy3lKcN0aObdykFIYV1xCFN2gziqHS7KV3tGXqhbNv7Y7UOm9PSbpf GLrQ/8eIgEQZM5NbclI36BycrB5rV9IeowjouD3MNxmzqEDSvlnvOmefWehDK+DwavEd I75806UmEd26hYUclgaZ4SiBE6Mx4u+7PQHOG/kL7n0Tsx6R1ZSHmHmN14VlS2UEo+lr vF4A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:references:date:in-reply-to :message-id:user-agent:mime-version; bh=QmQZk7PEtsSE9PYCNI6NJp/cDGoIFjOdqFe943WTp7M=; b=1isgMK1OzdgCtO8i6O6DaAvosGp5iDP+KS5ZtkQyd5hZiPpfVC/+l4HlKv8vWOQcf3 nkrIYHJJwDwZnzCNB7X7AXW5Fd0pn0tvWNFrXYpLjAlhhoEW7ydEAbxzLsJqtT5sofnZ vWd31yM7OMOc1OLQ4pAyI+ezztCyxq4mPbMOCSiaNXTKJlJyl1yQ1MSsoK1rpp56hpuC vbTwNQZUXfDE+NUiyT+I9qmTFoJ1Z8V5cRNh3L24D/7cJFHveHHYazUnYyqKL0gbV/q9 Y3idVCfQJFSXpLql/xivVJUl2ECwwhUjgHVM1RvO/Posu+ir/1uTxmADGw3hKFklluTQ 79aw== X-Gm-Message-State: AOAM531A1Tun9s5hqZedPP+i2B+yPccCEt7UWFZP1GVaWpnmV83klfmA jldvRWCeE+lpYGX6JBiFRg4NxLSLuis= X-Google-Smtp-Source: ABdhPJyqlVw5Rr/IHprtPz1IlbuJ6TmD/ayT4hourgLq06HTKbWzXD2W1zy/ygoNvoNmxJgOAIO2jg== X-Received: by 2002:aa7:8151:0:b0:480:9d40:8e38 with SMTP id d17-20020aa78151000000b004809d408e38mr55231912pfn.72.1636250115300; Sat, 06 Nov 2021 18:55:15 -0700 (PDT) Original-Received: from Youmu (192.69.92.236.16clouds.com. [192.69.92.236]) by smtp.gmail.com with ESMTPSA id z15sm8921689pga.16.2021.11.06.18.55.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 Nov 2021 18:55:15 -0700 (PDT) In-Reply-To: <87y2619lnw.fsf@gnus.org> (Lars Ingebrigtsen's message of "Sat, 06 Nov 2021 19:36:03 +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:219186 Archived-At: Lars Ingebrigtsen writes: > Zhiwei Chen writes: > >> emacs -Q, then open the following c++ snippet. > > I put the snippet into a file /tmp/snippet.cc, and said: > > ./src/emacs -Q /tmp/snippet.cc > > But I was unable to reproduce the problem -- the file displayed as > normal for me, and Emacs didn't use 100% CPU. > > Are there any additional steps necessary to reproduce the problem? Keeping pressing C-p/C-n will see the noticeable latency. To be specific, C-p/C-n in the merge function makes Emacs unresponsive. -- Zhiwei Chen