From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#56682: Fix the long lines font locking related slowdowns Date: Tue, 02 Aug 2022 03:55:56 -0400 Message-ID: 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> Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="4169"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: 56682@debbugs.gnu.org, Eli Zaretskii , gregory@heytings.org To: Dmitry Gutov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Aug 02 10:43:20 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 1oInUl-0000rz-4J for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 02 Aug 2022 10:43:19 +0200 Original-Received: from localhost ([::1]:54656 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oInUk-00077N-1o for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 02 Aug 2022 04:43:18 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59616) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oImlz-0003Bg-0O for bug-gnu-emacs@gnu.org; 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Tue, 2 Aug 2022 03:55:59 -0400 (EDT) In-Reply-To: <17c0d4df-78f5-76f4-784d-5c9d52eb7fa0@yandex.ru> (Dmitry Gutov's message of "Tue, 2 Aug 2022 04:05:57 +0300") 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:238495 Archived-At: > only top and bottom of the buffer are fontified), with the caveat that > font-lock always tries to backtrack to BOL when fontifying the current > hunk. Which makes sense, of course, but could be tweaked for long lines to > avoid re-fontifying the whole buffer again and again. It has already been (recently) tweaked for this on `master`. Stefan