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: Mon, 15 Aug 2022 20:53:12 +0000 Message-ID: <3a1232a17b37db7a2498@heytings.org> References: <5308e3b5-a160-17d7-77ee-b1d00acfa20d@yandex.ru> <92da07bd02a6cc861e1a@heytings.org> <837d3lzv8n.fsf@gnu.org> <2c8d6755-cfe2-6559-3fde-3fa30ffb411e@yandex.ru> <83mtcgy44k.fsf@gnu.org> <83k07jx5jn.fsf@gnu.org> <866e510d-a060-7daa-d002-97861d056fa7@yandex.ru> <1144021660321893@iva5-64778ce1ba26.qloud-c.yandex.net> <12348081660379417@sas2-a098efd00d24.qloud-c.yandex.net> <66bbbb95983414e79637@heytings.org> <83wnb9hadb.fsf@gnu.org> <395454dd-7238-c5d0-e924-2f65a186baa7@yandex.ru> <83r11hh4pm.fsf@gnu.org> <3a1232a17b09ce88af40@heytings.org> <4ebdfdc3-4aeb-7ebb-b5ba-43b5c9b0aaa1@yandex.ru> <3a1232a17b80387503f4@heytings.org> <881ac6c7-116c-49d0-8f19-4a3778260914@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="26532"; 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 Mon Aug 15 22:54:14 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 1oNh6E-0006cn-4M for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 15 Aug 2022 22:54:14 +0200 Original-Received: from localhost ([::1]:39684 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oNh6D-0000FX-4p for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 15 Aug 2022 16:54:13 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59398) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oNh62-00005P-I5 for bug-gnu-emacs@gnu.org; Mon, 15 Aug 2022 16:54:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:54449) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oNh62-0006Sr-9P for bug-gnu-emacs@gnu.org; Mon, 15 Aug 2022 16:54:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1oNh61-0006y1-VO for bug-gnu-emacs@gnu.org; Mon, 15 Aug 2022 16:54:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Gregory Heytings Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 15 Aug 2022 20:54:01 +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=B56682.166059679626729 (code B ref 56682); Mon, 15 Aug 2022 20:54:01 +0000 Original-Received: (at 56682) by debbugs.gnu.org; 15 Aug 2022 20:53:16 +0000 Original-Received: from localhost ([127.0.0.1]:44198 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oNh5H-0006x2-Lx for submit@debbugs.gnu.org; Mon, 15 Aug 2022 16:53:15 -0400 Original-Received: from heytings.org ([95.142.160.155]:54722) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oNh5G-0006wv-B8 for 56682@debbugs.gnu.org; Mon, 15 Aug 2022 16:53:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20220101; t=1660596793; bh=F6D6tWd6IVa+S2iBf1Vkstsw7aNTFFcP1o8DOWhnNcw=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=KmJsZqw060l1SH9QbedwT+3s6PeEqTGmf6DvJVfXiVVVkg9g4vvt9nVns8ykDsCaf jQU+MqqfdylaWTPvpzZwTdpo+mCg/KAr6k9Lt66rfxw5m+LQ9dhqz9iPOQpv1mPLyn +q9/qgtJ9u3KIo0f775WOKiBORQK5Hq2sFEEBNgQGLJgfrx82O6GXXEbC7Q5exlTgr rEMSn0W7yZlmtSt7vmHzvTWnZbwLeC8maIVYSOo8yjWORou4bbWQKC34GOYvwARi+y 14P7+nvJRbBsQhIgMra+o3wjTo4+WVKvY2LMW5vPKGC8LLtr3k/785aT7pg/UlStTs sBF5m6DRg20XQ== In-Reply-To: <881ac6c7-116c-49d0-8f19-4a3778260914@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:239840 Archived-At: > > I said those words just as I was working on improving font-lock's > performance in JSON files. An effort which doesn't make sense if you > narrow around font-lock anyway. > > Also note that until now it has been impossible to improve redisplay of > big files by working on font-lock (other bottlenecks were much more > significant). > Wrong. The (much more common) case of big files _without_ long lines, in which the same font locking slowdowns already exist, has AFAICS not been a sufficient incentive to improve font locking.