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: Wed, 03 Aug 2022 04:37:55 -0400 Message-ID: References: <65cb7c73fd4a999cca00@heytings.org> <8c7321f2f3400a5db9be@heytings.org> <8c7321f2f388e5343475@heytings.org> <6ea376f6-d503-06d8-6d83-50c52b695394@yandex.ru> <8c7321f2f3ac52bfee4b@heytings.org> <8c7321f2f3ec1ef81af9@heytings.org> <02e83b0e-1b5c-fe75-6e59-1f8ddff82d37@yandex.ru> <96f28fd8-6744-1925-0631-0095099362dd@yandex.ru> <74ddc877f1b74ab56d18@heytings.org> <83r11y5a9d.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="24444"; 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.org, dgutov@yandex.ru To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Aug 03 10:41:55 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 1oJ9wu-00067F-Oj for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 03 Aug 2022 10:41:52 +0200 Original-Received: from localhost ([::1]:53950 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oJ9wt-0008UL-JH for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 03 Aug 2022 04:41:51 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:43664) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oJ9uA-0005uL-Hf for bug-gnu-emacs@gnu.org; Wed, 03 Aug 2022 04:39:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:56302) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oJ9uA-00085u-2P for bug-gnu-emacs@gnu.org; Wed, 03 Aug 2022 04:39:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1oJ9u9-0007bA-Pv for bug-gnu-emacs@gnu.org; Wed, 03 Aug 2022 04:39:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Monnier Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 03 Aug 2022 08:39:01 +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=B56682.165951588729141 (code B ref 56682); Wed, 03 Aug 2022 08:39:01 +0000 Original-Received: (at 56682) by debbugs.gnu.org; 3 Aug 2022 08:38:07 +0000 Original-Received: from localhost ([127.0.0.1]:46051 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oJ9tH-0007Zx-JP for submit@debbugs.gnu.org; Wed, 03 Aug 2022 04:38:07 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:51240) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oJ9tG-0007ZT-Cg for 56682@debbugs.gnu.org; Wed, 03 Aug 2022 04:38:06 -0400 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 1833144053B; Wed, 3 Aug 2022 04:38:01 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 00EB344014B; Wed, 3 Aug 2022 04:38:00 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1659515880; bh=iay8Din4bpz5B4VMcx6uVyOGBAjiBtithaFuKdFRk2U=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=iKgZ8Q2AvgzIYWhRBUnQvUR2makG7KB/nRaODyABpdHMpmjbnzJ5S3xsXgR/iUA9M e67Fup058MQNJ+Y4ApOyA/jntyNxcKWkP2mMIGHth6baq2kwR5/1Z/C4w3dsCSPc68 zb2NQlK6e8nxDaE5/+/Zy/wz3DgCHf4Wo8AEbaQHpOErOm6egTrFEImwVKTTlccD/n l1rBbtszOe/B7qv4lzw7o9FU8YPu77AEQuEJylWDm8DvwFXDJ0M2k82McvUmL2Arnf GcegrdwpLAfKcOq0GwHw7psxEyEUvMYG8GaSvQMy3trDk9bZku7FgHiPZ7Xk42W67B Eqk91kv3cz1fQ== Original-Received: from milanesa (unknown [46.44.221.102]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 0E6C11201E3; Wed, 3 Aug 2022 04:37:58 -0400 (EDT) In-Reply-To: <83r11y5a9d.fsf@gnu.org> (Eli Zaretskii's message of "Wed, 03 Aug 2022 05:30:38 +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:238620 Archived-At: >> > Indeed, that's my conclusion too. So until syntax-ppss (at least) is made >> > an order of magnitude faster, the right thing to do is to use the forced >> > narrowing method. >> >> By tying this to "long lines" is wrong, since it has nothing to do with >> long lines, only with large buffers. > > I thought you told me once that syntax-propertize needs to consider > complete lines in some (frequent) situations? Yes, but we're talking about `syntax-ppss` here. Admittedly, `syntax-ppss` uses `syntax-propertize` internally, but I think the two need to be considered separately (and `syntax-propertize` already tries to bound its work via `syntax-wholeline-max`). Stefan