From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Dmitry Gutov Newsgroups: gmane.emacs.devel Subject: Re: How the long-lines "optimisation" breaks font locking. Date: Sat, 6 Aug 2022 13:54:05 +0300 Message-ID: <0b4c1d94-9be6-8dbb-aa4f-b10e4365b449@yandex.ru> References: <87y1w5tahv.fsf@gnus.org> <83sfmc2mph.fsf@gnu.org> <837d3n0we0.fsf@gnu.org> <71604574-d7e7-306f-bbc7-b60461737d6e@yandex.ru> <83pmhezs61.fsf@gnu.org> <12edd1f1-e073-689b-cc94-22cabca40352@yandex.ru> <83o7wyzp16.fsf@gnu.org> <83czdeyluk.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="6229"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.1 Cc: acm@muc.de, larsi@gnus.org, emacs-devel@gnu.org, gregory@heytings.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Aug 06 12:55:01 2022 Return-path: Envelope-to: ged-emacs-devel@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 1oKHSP-0001Se-Ex for ged-emacs-devel@m.gmane-mx.org; Sat, 06 Aug 2022 12:55:01 +0200 Original-Received: from localhost ([::1]:45324 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oKHSO-0005P2-J2 for ged-emacs-devel@m.gmane-mx.org; Sat, 06 Aug 2022 06:55:00 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41268) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oKHRq-0004kq-Dn for emacs-devel@gnu.org; Sat, 06 Aug 2022 06:54:26 -0400 Original-Received: from mail-wm1-x332.google.com ([2a00:1450:4864:20::332]:52783) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oKHRo-0001sw-UB; Sat, 06 Aug 2022 06:54:26 -0400 Original-Received: by mail-wm1-x332.google.com with SMTP id c22so2475562wmr.2; Sat, 06 Aug 2022 03:54:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=j/T1FgRzDyWnSZVqOHIzj7yrBsoFvESvvgZJysgfzww=; b=FJ5cVkWTZypzUQLDUhub29CYu8mkXJEMFbIpkMCUQ1WNObOtM0AzVsFrYRoI9pGuxT x8V26j8ddjfNEwfuiDMG4vkZL7nE385NJ5YLYdcp8fTTms1/ZJLLHzZUnoyy46sbE1pV 2p4rLn1yQRpxJT0TCKwrg0veZhlfIuljafApe5ALxirqGzGllCervu5vlqruPrEDDT5Z qH4Z2c/tJyVWinXQMVg+nhmot3RM4Shrbaezde3YhgNFkklkUCDxI/gaSCECGDOq4Md0 EYJvuUEViR27tLn68D+BgDtmo35OkBWpIvW8HC2qHK0FzxRhJf7+E79GKWp7LaMRGWP4 nfwg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:message-id:date:mime-version:user-agent :subject:content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=j/T1FgRzDyWnSZVqOHIzj7yrBsoFvESvvgZJysgfzww=; b=BKc3qM66MX2l+IU1vCgRwDF4bzMqeVNNZkjzCPX4hFYF2u2PooD91aH63oaAgxbgdb aloDK9nouB6QKbiRtIuEUpMK+yoytBlNWwr2RTLdQWr8g7lN5+kTa68/KAwGN5sFUHFX usVcz9CRMMD/gJCgGlScc7epFo5B/639chMzohxQ0aoG24CywfOVyhGsrtS4kZJogZVX AVUeQWsxSC/xhjf3gZzvutppF7jj6wrLDPykvw+HHE9iWPGyn7C3W4F83ECiKUdv+jy2 D6gA102siG3kyvc4/dt4FZh2M0EjacwZEAwhF26JqOyyxzJ2eKOx27sZVelbjUaPJguR jYZA== X-Gm-Message-State: ACgBeo3HdmGQkQO5Rzzlq7cOEAEffIKZJTsbWiK4wY9eS9aAeVZ5ZZfu omCgW4pITlUOMPWVF0XXzewWqEL8NfM= X-Google-Smtp-Source: AA6agR7tbwov0KAOelGvG1kmIfazpePl1ssQCGzwiKsv4M5956AssD4I16nL9lBB22qIL4Bw2942LQ== X-Received: by 2002:a05:600c:2254:b0:3a5:1254:8bd7 with SMTP id a20-20020a05600c225400b003a512548bd7mr6717586wmm.101.1659783248062; Sat, 06 Aug 2022 03:54:08 -0700 (PDT) Original-Received: from [192.168.0.6] ([46.251.119.176]) by smtp.googlemail.com with ESMTPSA id j6-20020a05600c190600b003a31b79dc0esm30659961wmq.1.2022.08.06.03.54.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 06 Aug 2022 03:54:07 -0700 (PDT) Content-Language: en-US In-Reply-To: <83czdeyluk.fsf@gnu.org> Received-SPF: pass client-ip=2a00:1450:4864:20::332; envelope-from=raaahh@gmail.com; helo=mail-wm1-x332.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:293141 Archived-At: On 06.08.2022 08:36, Eli Zaretskii wrote: >> Date: Fri, 5 Aug 2022 22:50:07 +0300 >> Cc: acm@muc.de, larsi@gnus.org, emacs-devel@gnu.org, gregory@heytings.org >> From: Dmitry Gutov >> >> On 05.08.2022 18:30, Eli Zaretskii wrote: >>>> The slow part I'm referring to is not in font-lock's code, nor in CC >>>> Mode's font-lock rules. So it can be "fixed" independently. >>> Then where is it? >> >> Probably somewhere in the recent xdisp.c changes. > > Very unlikely. The recent changes in xdisp.c could not have possibly > slowed down the code there. No, no. They fixed it. That's why the advice to set long-line-threshold to nil (if one wants correct fontification) is not so great: it brings those issues back.