From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.bugs Subject: bug#56682: Fix the long lines font locking related slowdowns Date: Tue, 02 Aug 2022 15:06:17 +0000 Message-ID: <74ddc877f142634d29c2@heytings.org> References: <837d46mjen.fsf@gnu.org> <8a3eaeef01be5bfaa5ef@heytings.org> <05388e8d8812bfa3695d@heytings.org> <83v8rf5894.fsf@gnu.org> <65cb7c73fd4a999cca00@heytings.org> <8c7321f2f3400a5db9be@heytings.org> <8c7321f2f388e5343475@heytings.org> <6ea376f6-d503-06d8-6d83-50c52b695394@yandex.ru> <8c7321f2f3ac52bfee4b@heytings.org> <2f7eeea3-6ba9-d2c2-1fb9-dd40d2de2002@yandex.ru> <8c7321f2f368e8dd096d@heytings.org> <56a688f6-6c93-8b67-895c-2c41f563fc93@yandex.ru> <83sfmg2mkv.fsf@gnu.org> <17c0d4df-78f5-76f4-784d-5c9d52eb7fa0@yandex.ru> <83bkt27rij.fsf@gnu.org> <668375bf-a861-04da-f78d-04b6719e0dd4@yandex.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="31823"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 56682@debbugs.gnu.org, Eli Zaretskii , monnier@iro.umontreal.ca To: Dmitry Gutov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Aug 02 17:07:45 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 1oItUm-00085g-GG for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 02 Aug 2022 17:07:44 +0200 Original-Received: from localhost ([::1]:54022 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oItUl-0000TK-HE for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 02 Aug 2022 11:07:43 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:37788) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oItU6-0000SO-RR for bug-gnu-emacs@gnu.org; Tue, 02 Aug 2022 11:07:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:55008) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oItU6-0003hP-C3 for bug-gnu-emacs@gnu.org; Tue, 02 Aug 2022 11:07:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1oItU6-0000kL-6t for bug-gnu-emacs@gnu.org; Tue, 02 Aug 2022 11:07:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Gregory Heytings Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 02 Aug 2022 15:07:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 56682 X-GNU-PR-Package: emacs Original-Received: via spool by 56682-submit@debbugs.gnu.org id=B56682.16594527802804 (code B ref 56682); Tue, 02 Aug 2022 15:07:02 +0000 Original-Received: (at 56682) by debbugs.gnu.org; 2 Aug 2022 15:06:20 +0000 Original-Received: from localhost ([127.0.0.1]:44754 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oItTQ-0000j9-3n for submit@debbugs.gnu.org; Tue, 02 Aug 2022 11:06:20 -0400 Original-Received: from heytings.org ([95.142.160.155]:35670) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oItTO-0000j1-F5 for 56682@debbugs.gnu.org; Tue, 02 Aug 2022 11:06:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20220101; t=1659452777; bh=mDAhPEhTvOAGq2TYPDwYkXPmCNNyhmno39bZz+7E9Ls=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=gOiEeX0ILVc+K3uDfBAOMmLqRI+FcsqavOs2mS7aczjAVWein0HivxJfRtQniHqw0 1oVj2sBaW3D2UgWtLrT37uSbjfKpCnR+YEUseE/Pa+kjE0u0rws4jK0lZ7FLeKujJH XUxgO0fzHp3l2KBPTFr7OnhK93FcsxnCp8SfPRkAYVUnnjXZx4j+6XhVlY8rFC4NDn JLALehPd/PStaIHAheT48sf2JesODxWyOXfkcj0F9b3HD9uyfFdvvye2QRwVg7IVjF K9DYeS61gIwQ4duKrY95cphuXk4SymfQNX3Dccy0NVL99ByKAUlH1Y4IbCbnfz3O2U ULwVCK2CQ6JHQ== In-Reply-To: <668375bf-a861-04da-f78d-04b6719e0dd4@yandex.ru> 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:238563 Archived-At: > > Whether they do or not, font-lock widens by default, see > font-lock-dont-widen. > And even if one sets font-lock-dont-widen to nil, mode authors are completely free to ignore that setting (assuming they're aware it exists). > > If we're able to demonstrate that the remaining bottlenecks are inside > font-lock, it should be easier to improve there. > It has been demonstrated, as far as I can see, and repeatedly so.