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 03:48:09 -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> <83tu6w2mrm.fsf@gnu.org> 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="25154"; 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, Gregory Heytings , dgutov@yandex.ru To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Aug 02 10:23:07 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 1oInBD-0006MQ-7W for geb-bug-gnu-emacs@m.gmane-mx.org; 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h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=aPYYCHSRbBZ2QfjcNIQiAMwKHDOxAdIIIOkBJ7rLD+i4ABh7TEeYqy6Zja1m7DKsT vxJzXrA2QC6tXezKr4Py245/hvqeGnlgaOWubifyTGRD64syYpIbnPKXlpMSmFpuag V/qHYlk+DUph1xoCLvFfICntsr6TGY/+GiESJ63bFPrz1G1LezdNgvqN2OfRa2vsE3 rFCdP+DQGLcgu9RlEGb9MLQhqU7A5NZEQXtDmm+Vm+GCxJjSHaK9SCWVGZoKbmC/rC f2cg5WqKIQ7iYJhZdwptv7visvgfYDhD8d7Qef0YreSASJn/8cJf/yfrS3wElN7Juz p27o6dQJPXAnQ== Original-Received: from milanesa (dyn.144-85-175-211.dsl.vtx.ch [144.85.175.211]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 32BB9120202; Tue, 2 Aug 2022 03:48:12 -0400 (EDT) In-Reply-To: <83tu6w2mrm.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 01 Aug 2022 15:04:13 +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:238493 Archived-At: > used, for some reason) jit-lock-defer feature: if you set > jit-lock-defer-time to a large enough value, M-> followed by C-p will > not be as slow as they are now, I think. I think currently, with such a setting, in Gregory's example, the 50s of `syntax-ppss` will still bite the users because they're uninterruptible, although if the users happen to leave Emacs idle at the right time they may not notice. We could/should make sure the 50s are done "in the background" and can be interrupted at any time. Stefan