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[84.224.226.97]) by smtp.gmail.com with ESMTPSA id n11-20020a170906b30b00b00989828a42e8sm905253ejz.154.2023.10.27.02.43.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 27 Oct 2023 02:43:29 -0700 (PDT) Message-ID: <289aa452-b1f1-f0fb-dcfe-496af2110a78@HIDDEN> Date: Fri, 27 Oct 2023 11:43:28 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.2.1 Subject: Re: bug#66764: 29.1; Emacs scrolls for "(goto-char (point-max))" instead of jumping Content-Language: sv-FI To: Eli Zaretskii <eliz@HIDDEN> References: <ddf1fc8b-2e31-4b2e-8da6-845031ac4171@HIDDEN> <83jzr9fdh0.fsf@HIDDEN> <807a1bd5-6477-cc36-088f-efcb782ccb99@HIDDEN> <83a5s4fwih.fsf@HIDDEN> <831qdgftja.fsf@HIDDEN> From: =?UTF-8?Q?Herman=2c_G=c3=a9za?= <geza.herman@HIDDEN> In-Reply-To: <831qdgftja.fsf@HIDDEN> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -1.5 (-) X-Debbugs-Envelope-To: 66764 Cc: Gregory Heytings <gregory@HIDDEN>, 66764 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -2.5 (--) On 10/27/23 08:50, Eli Zaretskii wrote: > AFAIU, the font-lock-keywords setting above causes the display engine > to call this function every time it moves across some chunk of text, > which slows down redisplay. This shows with scroll-conservatively set > to a large value because Emacs then attempts to find the minimum > amount of scrolling the screen in order to bring point into the view. As far as I understand, if the buffer is fully font-locked, then this function won't be called again, unless the buffer is modified. So this shouldn't be a problem. But even if this is not true, I've been using this setting for a long time, I didn't notice any performance problems with it. > It is a known fact that modes which use advanced font-lock settings > should adapt to the long-line situation (when the function > long-line-optimizations-p returns non-nil) This setting comes from a package named hl-todo. I believe it is done this way so it only highlights TODO items which are in comments/strings. Maybe there is a better way to achieve this, I don't know. > so I think you should > modify your font-lock settings to avoid this problem in that case. I turned off long-line optimizations instead, because it causes other problems as well (mentioned in my previous email).
bug-gnu-emacs@HIDDEN:bug#66764; Package emacs.
Full text available.Received: (at 66764) by debbugs.gnu.org; 27 Oct 2023 09:23:08 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Oct 27 05:23:08 2023 Received: from localhost ([127.0.0.1]:35072 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1qwJ3c-0000NM-1S for submit <at> debbugs.gnu.org; Fri, 27 Oct 2023 05:23:08 -0400 Received: from mail-ej1-x630.google.com ([2a00:1450:4864:20::630]:52301) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <geza.herman@HIDDEN>) id 1qwJ3W-0000Mo-OX for 66764 <at> debbugs.gnu.org; Fri, 27 Oct 2023 05:23:07 -0400 Received: by mail-ej1-x630.google.com with SMTP id a640c23a62f3a-9bdf5829000so296803366b.0 for <66764 <at> debbugs.gnu.org>; Fri, 27 Oct 2023 02:22:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1698398545; x=1699003345; darn=debbugs.gnu.org; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=8hrG750Gl7hz/0UJIj+UYwYOLW77bHS/vbAuArCReSY=; b=lFnQFcXVS6OPPlbI6AUvNDvw/He7bN9NPQxVVEHbJMc2reddIgkueYP4TJ+U8hdlxP SfYxVBXfg1Wr9YsUggaJB1KHS8zsg7dIWXQ/akpPHha5ihRpzITsB98FvW3FFqnzcGRG XKRPDgucPFH130gt6a4xSYugkS0Dv6TG2kNurAI94j96F3b58eubwl1yqJZ/2JZOb7O8 Awxp4rwjDK883ntwskOoPXXFW4wSg9Q6vd0X2Q0xzsDvWW/g9gZ0NTz0JRZIRF4xSeFo yk94l9SRUnt5gqB27O4w76uAP1TVhafP9GSEjCszN8MamqKLyebrS6Yi+MLY3sSVXNfk Zftg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698398545; x=1699003345; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=8hrG750Gl7hz/0UJIj+UYwYOLW77bHS/vbAuArCReSY=; b=v7r3XWtaCgONGXO0TlP4/lE6n5JcemlGIRuPFB/EvqA2S01fxc0TfT/C/8fGY2P0UI A1u49vK0xobbXozO827LQjPrwPyfqqAd7QrHDv0Nk1klt8kX899hnyw8jADm5PGHL4yS RjtLMCNfE36JjlCIswonqoWmqxnVEz6824wuPvw/P2v6hbzPIKZhHdZPm3QyjxG5nzt1 QPxgAw9T3YpLd7lc4nmf+/cfoxq8yd/uGHN368XpBrGm0pT1Mk23ctcxtG4+ImwYP4rz baJFa7SesHKkVZnHAxsuRNWw9Hb4mqMj3fk7jTV27XT6YQnl5vQY27fN3dvY4s9LhrzX /j8Q== X-Gm-Message-State: AOJu0YwS1NffTd6LtJSnK8gmd+TBA8C6ubsi5CPRrlunRh6y20/pTDy1 WuQsr2DaUN+3olLv+VC6o0c= X-Google-Smtp-Source: AGHT+IElJnqgR/I+ej2tQqJjBm6tI1vhZlcP2mmTzaFTAdJJA7g4lLeJFgjXrVULJCc9NlbuDMTIhQ== X-Received: by 2002:a17:907:2d29:b0:9be:7dd3:40ab with SMTP id gs41-20020a1709072d2900b009be7dd340abmr1841150ejc.2.1698398544730; Fri, 27 Oct 2023 02:22:24 -0700 (PDT) Received: from [192.168.8.4] (netacc-gpn-4-226-97.pool.yettel.hu. [84.224.226.97]) by smtp.gmail.com with ESMTPSA id l22-20020a1709061c5600b009b27d4153cfsm901691ejg.176.2023.10.27.02.22.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 27 Oct 2023 02:22:24 -0700 (PDT) Message-ID: <8d387535-064b-ff2f-83fb-eb3d4b13f591@HIDDEN> Date: Fri, 27 Oct 2023 11:22:22 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.2.1 Subject: Re: bug#66764: 29.1; Emacs scrolls for "(goto-char (point-max))" instead of jumping Content-Language: sv-FI To: Eli Zaretskii <eliz@HIDDEN> References: <ddf1fc8b-2e31-4b2e-8da6-845031ac4171@HIDDEN> <83jzr9fdh0.fsf@HIDDEN> <807a1bd5-6477-cc36-088f-efcb782ccb99@HIDDEN> <83a5s4fwih.fsf@HIDDEN> From: =?UTF-8?Q?Herman=2c_G=c3=a9za?= <geza.herman@HIDDEN> In-Reply-To: <83a5s4fwih.fsf@HIDDEN> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -1.5 (-) X-Debbugs-Envelope-To: 66764 Cc: 66764 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -2.5 (--) On 10/27/23 07:46, Eli Zaretskii wrote: > You are saying that Emacs stops and doesn't go further towards EOB > afterwards? Yes. I press my "goto-EOB" key, then it does this weird scrolling, and Emacs stops in the middle of the buffer. Then I need to press "goto-EOB" again to actually reach EOB. I haven't tried to make a minimal reproducible example yet.
bug-gnu-emacs@HIDDEN:bug#66764; Package emacs.
Full text available.Received: (at 66764) by debbugs.gnu.org; 27 Oct 2023 06:51:04 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Oct 27 02:51:03 2023 Received: from localhost ([127.0.0.1]:34975 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1qwGgR-0004he-JH for submit <at> debbugs.gnu.org; Fri, 27 Oct 2023 02:51:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58970) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1qwGgO-0004h4-0x for 66764 <at> debbugs.gnu.org; Fri, 27 Oct 2023 02:51:02 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1qwGfn-0007le-3M; Fri, 27 Oct 2023 02:50:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=WOZOTrwFGWhfXTb1H+6/ukEjiOdRHS6sNUu2ElQvj3k=; b=Us04dfUhy6Es AsvWahYb0bgGCviToiZSvMiVlgWR32cCnuZUC2VNEkqA80u96CnV4zilBTGXNkOdgdVT5PHoYfKRA upVoSf5TU+Jrlg8N7STyVvIsf6rpl+lx7E3PrYKFulU6sckPtIPwyDZbIxVZ4QPvgyqAw+LqFotly GkV9HNX7x1H6Hp17in2AYUL/tznnZL7MFjWXSO9oPeaE5R2KB9oRBxx/2AS7gR4LV4Gqtj24cvVWm Q2DKi/S15cPrLdv+YH2AvV416Y+y5GgKkYF0oBO2IEDJC6VFPiQmkJfhtg3Ub8jVTdbLXsX1fmaYi SxhsRh7q3FWvNt+B3QRoQw==; Date: Fri, 27 Oct 2023 09:50:33 +0300 Message-Id: <831qdgftja.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: geza.herman@HIDDEN In-Reply-To: <83a5s4fwih.fsf@HIDDEN> (message from Eli Zaretskii on Fri, 27 Oct 2023 08:46:14 +0300) Subject: Re: bug#66764: 29.1; Emacs scrolls for "(goto-char (point-max))" instead of jumping References: <ddf1fc8b-2e31-4b2e-8da6-845031ac4171@HIDDEN> <83jzr9fdh0.fsf@HIDDEN> <807a1bd5-6477-cc36-088f-efcb782ccb99@HIDDEN> <83a5s4fwih.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 66764 Cc: Gregory Heytings <gregory@HIDDEN>, 66764 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) OK, I think I see the root cause of the problem: it's your font-lock-keywords setting, viz.: (font-lock-add-keywords nil '(((lambda (bound)) (1 'error prepend t))) t) Without this setting, everything works as expected, and goto-char goes to the EOB almost instantaneously, even when scroll-conservatively is set to a large value. AFAIU, the font-lock-keywords setting above causes the display engine to call this function every time it moves across some chunk of text, which slows down redisplay. This shows with scroll-conservatively set to a large value because Emacs then attempts to find the minimum amount of scrolling the screen in order to bring point into the view. It is a known fact that modes which use advanced font-lock settings should adapt to the long-line situation (when the function long-line-optimizations-p returns non-nil), so I think you should modify your font-lock settings to avoid this problem in that case. CC'ing Gregory in case I missed something in this scenario.
bug-gnu-emacs@HIDDEN:bug#66764; Package emacs.
Full text available.Received: (at 66764) by debbugs.gnu.org; 27 Oct 2023 05:46:43 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Oct 27 01:46:43 2023 Received: from localhost ([127.0.0.1]:34929 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1qwFgB-0002t5-30 for submit <at> debbugs.gnu.org; Fri, 27 Oct 2023 01:46:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43760) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1qwFg7-0002sn-9J for 66764 <at> debbugs.gnu.org; Fri, 27 Oct 2023 01:46:41 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1qwFfW-00030v-M1; Fri, 27 Oct 2023 01:46:02 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=LA1BKQHqMyn3sBkxCb6R1lgjjpghUkeI18b6iHgOQZk=; b=PxaRRSc6BUShNhrnZFpg g7THvJOq0Io9GW6N8YambVtp17sPbGPLdIUoLYIh2BhXYOwZw0y4ay1UvN4+wFSU/KXdWDGtEc/cY Tlx0Ep7sA7X2xxChdwXyH6XGF/8PoodwKzhYCbOKKYpTLct+Dz9rck/uC6JS8j/CfqzKSV2OzwSqe Hu+zfW68mcHqK7isdk63BUOE71hQVjujz8n/4jm+MM8BPYXiigMGYjYdBmiFvD4tCXm8b5sapftXM gmJpjnGOayQIFIwAAGnvLtLobZOh7WylMR/Xh20bODyh5PJonDUo6eRP8aDpb54dwK0jGE56iZocX Yk7x8nSZHxHa6A==; Date: Fri, 27 Oct 2023 08:46:14 +0300 Message-Id: <83a5s4fwih.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: =?utf-8?Q?Herman_G=C3=A9za?= <geza.herman@HIDDEN> In-Reply-To: <807a1bd5-6477-cc36-088f-efcb782ccb99@HIDDEN> (message from Herman, =?utf-8?Q?G=C3=A9za?= on Thu, 26 Oct 2023 21:12:55 +0200) Subject: Re: bug#66764: 29.1; Emacs scrolls for "(goto-char (point-max))" instead of jumping References: <ddf1fc8b-2e31-4b2e-8da6-845031ac4171@HIDDEN> <83jzr9fdh0.fsf@HIDDEN> <807a1bd5-6477-cc36-088f-efcb782ccb99@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 66764 Cc: 66764 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > Date: Thu, 26 Oct 2023 21:12:55 +0200 > Cc: 66764 <at> debbugs.gnu.org > From: Herman, Géza <geza.herman@HIDDEN> > > On 10/26/23 20:25, Eli Zaretskii wrote: > > I didn't yet try to reproduce this, but just reading the description: > > why do you consider this behavior a problem, let alone a bug? > I think that pressing the "go to the end of the buffer" key should go to > the end of the buffer without any weird-looking scrolling, and it should > do it immediately, not in ~0.5 seconds. I'm not sure what you mean by "should go to the end of the buffer without any weird-looking scrolling". The Lisp program you posted moves point to the end of the buffer, but how to reflect that best on display is the decision made by the display engine, and it can legitimately be by scrolling the window (IIUC what you mean by "weird-looking scrolling"). As for ~0.5 seconds, I don't think I see this mentioned in your original report, so I'm guessing there are some aspects of this behavior that you haven't described in full yet, or maybe I didn't understand your description. Maybe when I generate the file with your program, I will understand it better. > I've just disabled this optimization, not just because of this. It's > also not ideal that if I run beginning-of-visual-line at the end of a > long line, the point only moves ~1000 characters to the left, instead of > moving to the beginning. I didn't report this problem, because I assume > it is known (I suppose it's by design how the optimization works?), so I > just give this as a feedback on the long-line-optimization feature here. Yes, this is by design. > >> In my real case, a much smaller file produces this problem. Also, Emacs > >> doesn't go to the end of the file, but stops somewhere in the middle (I > >> was unable to reproduce this issue with a simple configuration). > > This can legitimately happen if the last line has tall characters or > > you use line-spacing or something similar. Again, why is it a > > problem, as long as EOB is visible after that? > > The buffer is a simple ASCII file, all characters between 32-127 and > newline. There are no tall characters. My line-spacing is nil. The > problem is that EOB is not visible. Emacs stops at line 19232, but the > file has 48263 lines. You are saying that Emacs stops and doesn't go further towards EOB afterwards?
bug-gnu-emacs@HIDDEN:bug#66764; Package emacs.
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[84.224.226.97]) by smtp.gmail.com with ESMTPSA id fd10-20020a056402388a00b0053e5a1bf77dsm39678edb.88.2023.10.26.12.12.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 26 Oct 2023 12:12:56 -0700 (PDT) Message-ID: <807a1bd5-6477-cc36-088f-efcb782ccb99@HIDDEN> Date: Thu, 26 Oct 2023 21:12:55 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.2.1 Subject: Re: bug#66764: 29.1; Emacs scrolls for "(goto-char (point-max))" instead of jumping Content-Language: sv-FI To: Eli Zaretskii <eliz@HIDDEN> References: <ddf1fc8b-2e31-4b2e-8da6-845031ac4171@HIDDEN> <83jzr9fdh0.fsf@HIDDEN> From: =?UTF-8?Q?Herman=2c_G=c3=a9za?= <geza.herman@HIDDEN> In-Reply-To: <83jzr9fdh0.fsf@HIDDEN> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -1.5 (-) X-Debbugs-Envelope-To: 66764 Cc: 66764 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -2.5 (--) On 10/26/23 20:25, Eli Zaretskii wrote: > I didn't yet try to reproduce this, but just reading the description: > why do you consider this behavior a problem, let alone a bug? I think that pressing the "go to the end of the buffer" key should go to the end of the buffer without any weird-looking scrolling, and it should do it immediately, not in ~0.5 seconds. Without the long-line-optimization, it does that. In this case, the optimization is not an optimization, but makes things worse. I've just disabled this optimization, not just because of this. It's also not ideal that if I run beginning-of-visual-line at the end of a long line, the point only moves ~1000 characters to the left, instead of moving to the beginning. I didn't report this problem, because I assume it is known (I suppose it's by design how the optimization works?), so I just give this as a feedback on the long-line-optimization feature here. >> In my real case, a much smaller file produces this problem. Also, Emacs >> doesn't go to the end of the file, but stops somewhere in the middle (I >> was unable to reproduce this issue with a simple configuration). > This can legitimately happen if the last line has tall characters or > you use line-spacing or something similar. Again, why is it a > problem, as long as EOB is visible after that? The buffer is a simple ASCII file, all characters between 32-127 and newline. There are no tall characters. My line-spacing is nil. The problem is that EOB is not visible. Emacs stops at line 19232, but the file has 48263 lines. I didn't analyze this problem too deeply, because I thought that the fact that emacs scrolls in this case is already a bad thing. And it's likely the cause of the scrolling is similar to the stopping, because both problem go away with long-line-threshold set to nil. >> So to go to the end of the file I have to run "(goto-char >> (point-max))" multiple times. Interestingly, "M->" works fine. But >> if I remove the recenter call at the end of "end-of-buffer", it also >> has this odd behavior. > Which isn't surprising, since with the 'recenter' call removed, > end-of-buffer is just (goto-char (point-max)). Yes, but it is still weird how can a final recenter call cause a difference. The point movement happened earlier, and it is fixed by a later recenter call. But yeah, I suppose the scrolling happens later, during redisplay, or similar. I just reported this fact because it may help identifying the issue.
bug-gnu-emacs@HIDDEN:bug#66764; Package emacs.
Full text available.Received: (at 66764) by debbugs.gnu.org; 26 Oct 2023 18:26:01 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Oct 26 14:26:01 2023 Received: from localhost ([127.0.0.1]:34453 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1qw53Q-0007oI-SM for submit <at> debbugs.gnu.org; Thu, 26 Oct 2023 14:26:01 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45700) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1qw53N-0007o1-1F for 66764 <at> debbugs.gnu.org; Thu, 26 Oct 2023 14:25:59 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1qw52m-0001cU-Nu; Thu, 26 Oct 2023 14:25:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=upXkQJ/7XxviK9UXz1axAz8X8EenfhfSH/RYpcEn07w=; b=IBkWwaXAgrtZrCPZiR6+ XU8eQGfeCFA5bbpvxS22e1Xlh2PpmdbeRXojr0Ukb47aEfFXLOTtYjs4cck6ACv+zz99O3+xMbUcv lbNBwaWuXhK3p/mjHD//w39BuUvjomaAzLvKn/CGlfV6rsbzzmNjLAFqpZytH7SYyRljlo5IogM6v z+LtjDmRcU3NkPNloa0vADvEYJOao9lD4mj12wOUVyRh0fFjy1GDG1q5cAt6v6FqBXy+H0BlFvG+6 JmmDxKD5v8OBl6ez0af6e7VcJYRWvjj5dH+eYraZ2YtZNUUXaTqPxhsCWiFCwCA9rQTv3fFRFek7s BsypoyBRl7KyCw==; Date: Thu, 26 Oct 2023 21:25:16 +0300 Message-Id: <83jzr9fdh0.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Geza Herman <geza.herman@HIDDEN> In-Reply-To: <ddf1fc8b-2e31-4b2e-8da6-845031ac4171@HIDDEN> (message from Geza Herman on Thu, 26 Oct 2023 19:04:42 +0200) Subject: Re: bug#66764: 29.1; Emacs scrolls for "(goto-char (point-max))" instead of jumping References: <ddf1fc8b-2e31-4b2e-8da6-845031ac4171@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 66764 Cc: 66764 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > Date: Thu, 26 Oct 2023 19:04:42 +0200 > From: Geza Herman <geza.herman@HIDDEN> > > The bug is, that in certain circumstances, emacs moves the point by > using some kind of scrolling for "(goto-char (point-max))", instead of > just jumping. > > Repro: > > - create a file using the little C program at the end (it produces a > large text to stdout, you'll need to redirect it to some file) > > - open the file with "emacs -Q generated.txt" > > - with M-:, execute this: > > (progn > (setq scroll-conservatively 101) > (font-lock-add-keywords nil '(((lambda (bound)) (1 'error prepend > t))) t) > (goto-char (point-max))) > > Notice that emacs doesn't jump to the end immediately as usual, but it > does some kind of very fast scrolling. I didn't yet try to reproduce this, but just reading the description: why do you consider this behavior a problem, let alone a bug? > In my real case, a much smaller file produces this problem. Also, Emacs > doesn't go to the end of the file, but stops somewhere in the middle (I > was unable to reproduce this issue with a simple configuration). This can legitimately happen if the last line has tall characters or you use line-spacing or something similar. Again, why is it a problem, as long as EOB is visible after that? > So to go to the end of the file I have to run "(goto-char > (point-max))" multiple times. Interestingly, "M->" works fine. But > if I remove the recenter call at the end of "end-of-buffer", it also > has this odd behavior. Which isn't surprising, since with the 'recenter' call removed, end-of-buffer is just (goto-char (point-max)).
bug-gnu-emacs@HIDDEN:bug#66764; Package emacs.
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Date: Thu, 26 Oct 2023 19:04:42 +0200
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To: bug-gnu-emacs@HIDDEN
From: Geza Herman <geza.herman@HIDDEN>
Subject: 29.1; Emacs scrolls for "(goto-char (point-max))" instead of jumping
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The bug is, that in certain circumstances, emacs moves the point by
using some kind of scrolling for "(goto-char (point-max))", instead of
just jumping.
Repro:
- create a file using the little C program at the end (it produces a
large text to stdout, you'll need to redirect it to some file)
- open the file with "emacs -Q generated.txt"
- with M-:, execute this:
(progn
(setq scroll-conservatively 101)
(font-lock-add-keywords nil '(((lambda (bound)) (1 'error prepend
t))) t)
(goto-char (point-max)))
Notice that emacs doesn't jump to the end immediately as usual, but it
does some kind of very fast scrolling.
(With long-line-threshold set to nil, the issue doesn't happen)
In my real case, a much smaller file produces this problem. Also, Emacs
doesn't go to the end of the file, but stops somewhere in the middle (I
was unable to reproduce this issue with a simple configuration). So to
go to the end of the file I have to run "(goto-char (point-max))"
multiple times. Interestingly, "M->" works fine. But if I remove the
recenter call at the end of "end-of-buffer", it also has this odd behavior.
Here is the C program:
#include <stdio.h>
#include <stdlib.h>
int main() {
for (int i=0; i<200000; i++) {
int len = 100 + (rand()&0x7f);
if (i==5000) len = 60000;
for (int j=0; j<len; j++) {
printf("x");
}
printf("\n");
}
}
In GNU Emacs 29.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.38,
cairo version 1.16.0) of 2023-08-30, modified by Debian built on
x86-csail-01
Windowing system distributor 'The X.Org Foundation', version 11.0.12101008
System Description: Debian GNU/Linux trixie/sid
Configured using:
'configure --build x86_64-linux-gnu --prefix=/usr
--sharedstatedir=/var/lib --libexecdir=/usr/libexec
--localstatedir=/var/lib --infodir=/usr/share/info
--mandir=/usr/share/man --with-libsystemd --with-pop=yes
--enable-locallisppath=/etc/emacs:/usr/local/share/emacs/29.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/29.1/site-lisp:/usr/share/emacs/site-lisp
--with-sound=alsa --without-gconf --with-mailutils
--with-native-compilation --build x86_64-linux-gnu --prefix=/usr
--sharedstatedir=/var/lib --libexecdir=/usr/libexec
--localstatedir=/var/lib --infodir=/usr/share/info
--mandir=/usr/share/man --with-libsystemd --with-pop=yes
--enable-locallisppath=/etc/emacs:/usr/local/share/emacs/29.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/29.1/site-lisp:/usr/share/emacs/site-lisp
--with-sound=alsa --without-gconf --with-mailutils
--with-native-compilation --with-cairo --with-x=yes
--with-x-toolkit=gtk3 --with-toolkit-scroll-bars 'CFLAGS=-g -O2
-ffile-prefix-map=/build/reproducible-path/emacs-29.1+1=.
-fstack-protector-strong
-Wformat -Werror=format-security -Wall' 'CPPFLAGS=-Wdate-time
-D_FORTIFY_SOURCE=2' LDFLAGS=-Wl,-z,relro'
Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES
NATIVE_COMP NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3
THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER WEBP X11 XDBE XIM XINPUT2
XPM GTK3 ZLIB
Important settings:
value of $LC_ALL: C.UTF-8
value of $LANG: en_US.UTF-8
value of $XMODIFIERS: @im=ibus
locale-coding-system: utf-8-unix
Major mode: Text
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
show-paren-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
line-number-mode: t
indent-tabs-mode: t
transient-mark-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
epg-config gnus-util text-property-search time-date mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail
rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils comp comp-cstr
warnings icons subr-x rx cl-seq cl-macs gv cl-extra help-mode
cl-loaddefs cl-lib bytecomp byte-compile rmc iso-transl tooltip cconv
eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type
elisp-mode mwheel term/x-win x-win term/common-win x-dnd tool-bar dnd
fontset image regexp-opt fringe tabulated-list replace newcomment
text-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow
isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax
font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic
indonesian philippine cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
composite emoji-zwj charscript charprop case-table epa-hook
jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs
theme-loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads dbusbind inotify lcms2
dynamic-setting system-font-setting font-render-setting cairo
move-toolbar gtk x-toolkit xinput2 x multi-tty make-network-process
native-compile emacs)
Memory information:
((conses 16 100665 12371)
(symbols 48 7141 0)
(strings 32 26857 2252)
(string-bytes 1 845777)
(vectors 16 20215)
(vector-slots 8 367701 18494)
(floats 8 50 17)
(intervals 56 2211 0)
(buffers 984 12))
Geza Herman <geza.herman@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#66764; Package emacs.
Full text available.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.