From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Po Lu Newsgroups: gmane.emacs.devel Subject: Re: Stipples and scroll optimizations Date: Sun, 08 May 2022 19:46:59 +0800 Message-ID: <87bkw84570.fsf@yahoo.com> References: <87a6bs5w05.fsf.ref@yahoo.com> <87a6bs5w05.fsf@yahoo.com> <83ilqgwkfw.fsf@gnu.org> <875ymg5vgm.fsf@yahoo.com> <83h760wjyt.fsf@gnu.org> <871qx45ud0.fsf@yahoo.com> <83ee14wfzc.fsf@gnu.org> <87sfpk4bzl.fsf@yahoo.com> <838rrcwbbz.fsf@gnu.org> <87o80847dj.fsf@yahoo.com> <835ymgw9cu.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="21520"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.91 (gnu/linux) Cc: emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun May 08 13:48:50 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 1nnfP8-0005RR-M7 for ged-emacs-devel@m.gmane-mx.org; Sun, 08 May 2022 13:48:50 +0200 Original-Received: from localhost ([::1]:53344 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nnfP7-0005Ux-Kf for ged-emacs-devel@m.gmane-mx.org; Sun, 08 May 2022 07:48:49 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:60428) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nnfNa-00045X-IZ for emacs-devel@gnu.org; Sun, 08 May 2022 07:47:14 -0400 Original-Received: from sonic302-21.consmr.mail.ne1.yahoo.com ([66.163.186.147]:40693) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nnfNZ-000304-4C for emacs-devel@gnu.org; Sun, 08 May 2022 07:47:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1652010430; bh=LTgj4wcDB0+N4yrHT/SfCGbUW3xWdtW8bkIA2JBuowM=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From:Subject:Reply-To; b=Jn8DmoOTMl0PaEc3aRX0DqE8Juil4sZgmlMIjlzyTnR57piIt4Eqd5kOIXJqoinQnXEtw2GIsb7NJMScOgzK8G4r1KJGGpsX9xv2IpwnYuxIdaWZV/sNjTCdV+60AF7McOeRVvdvwI8u5HwK2oZCYc8ibH9C+seAw1g0joFqy5RqceSNbM0ZE4L5984WIJ6emYachrzw3hbi599wUijwoC1dodhe/3RIwqdTlujPLMggclp0ugY3XottDHl4xYzrpb0XExCybFUKOG65ZmrrF6D7exez9cWPQU28vus+F/0I4at/d/uqVQzv5XGFoUuVTOpzPA/8XZdRsIrspAwUrw== X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1652010430; bh=ZhYawF825NX0BoktuUQQU5QgmupHoZce7oEue7/oDUX=; h=X-Sonic-MF:From:To:Subject:Date:From:Subject; b=go6l5C/yzIO1E2yCriOvQjlmSr4gsIlUKrwcgbSsPBy8uOxlub/LP2vPtYISz0tyYwVqhVTQv+gGCLPrb/5t2wkHHwXA7LFszsxZsptU9njl8gEwqlh9anz4pYm2R1HOIptWVNHQdFjkcCWtS0ZNZ/962xGNqL6GxWI6Y2mZOicFOr6/YnC3CmWzjnFv/IlzZIZ2pSbeku+CobZnjyGyJ3C+v4iRUUxHkYMx2Cj6hmsdUbbe36Jv1yNiTkOuCexTu/QPG/ey5iIhJfi36F+AxYavkP8+jtDvf2TkHckWhqgVbooYiGsSYKJax50ykEVzYdLaEBsyWlfw0GQqgq4+tw== X-YMail-OSG: S5bxOacVM1mqnaXbRaTidzf7z5Vn0WT6Dz6cVa1Zx1izJw9_1QXEkif2r30KOeh zO71fBPEN_amDY_UxYbPV039tfZRjR6bANw0lMP.rq0msgK5N2bNUez3DNuJKQZoEwFrH9N1iu4C k9wTCqjVf4wuxu0kkb3Jhob7tKGe7CW.xzKJTn79SJ.tl40Gn4uLL2d4m9dK2FzeEmNe3kf52lLe mFUNpMQVjwmri2dQeXBeP5Asaw4TE1g8tsVDvDMYw0OFMqZAoXYWUI7JsqhN8VUqOiGgokatpVi6 7t76NFTGOuYx3tDx3hDcQYLCV9yGx_PnQKMR8OJVDbZcvgkhZiPWXRhnrzUBJlMqVwH0_67GcTdA FimLLHOvarCmDiVf97PxqkqHX8QOQ0xD57J9M0n31caOIPwfe9P6FUXMF8UOkcInK3pxYUP0O34T lrFbsANBVH5H5nDAT7lRVC7UBy1a7X7T5STtZTNYCS4N9m8c7bzXEKm1cNHI3tCMPtxl4fXLk8jj U5VJ4fbOlmGQLuyifbhvA.c2o2ObBBT3B79q.gCqkN7ZxJpINUe3Gt0_XU.Qz5v2cySiKeCqdX1G puNZq3V3X.pwgJInNh0Vj_8_HLeA8jki9.imPmfw.n__OEOMVtGNeW4X.HqBYXZaQN67YHiNOCJf .cIMUUYi6bnce0JqiH8h6a_LBVXn0kMNcQ1x7ev.ClN8HKV0tzvFuXFfIqPUOhKCu._GUToQZGQp C0wGn.CEgzx7C0T4Rd_gzCISbHoNezAhzI70x.LqmJlT26PqIJCLEoNbLDo6gNCqKC9ISEtRIRG9 VOqAU81so8GnhnyqqC0O5hAbijqqM_dQH5wGuIilVQ X-Sonic-MF: Original-Received: from sonic.gate.mail.ne1.yahoo.com by sonic302.consmr.mail.ne1.yahoo.com with HTTP; Sun, 8 May 2022 11:47:10 +0000 Original-Received: by hermes--canary-production-sg3-795d7b4d54-p5bpp (Yahoo Inc. Hermes SMTP Server) with ESMTPA ID 74447d43aefbca93704d8053358221b2; Sun, 08 May 2022 11:47:04 +0000 (UTC) In-Reply-To: <835ymgw9cu.fsf@gnu.org> (Eli Zaretskii's message of "Sun, 08 May 2022 14:29:37 +0300") X-Mailer: WebService/1.1.20188 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Received-SPF: pass client-ip=66.163.186.147; envelope-from=luangruo@yahoo.com; helo=sonic302-21.consmr.mail.ne1.yahoo.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=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=unavailable 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:289473 Archived-At: Eli Zaretskii writes: > Not necessarily true. update_window does this: > > /* Try reusing part of the display by copying. */ > if (row < end && !desired_matrix->no_scrolling_p) <<<<<<<<<<<<< > { > int rc = scrolling_window (w, (tab_line_row != NULL ? 1 : 0) > + (header_line_row != NULL ? 1 : 0)); > > If the desired matrix is irrelevant, why do we test the no_scrolling_p > flag on that matrix? I'm not sure, but I cannot see how that can affect us here, since this problem is only present when pixels containing stipplies that are _already_ on the glass (before scrolling) are copied around during scrolling. Thanks.