From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Aaron Jensen Newsgroups: gmane.emacs.bugs Subject: bug#63187: 30.0.50; Tail of longer lines painted after end of nearby lines on macOS Date: Sun, 30 Apr 2023 12:48:05 -0400 Message-ID: References: <87ilddec31.fsf@yahoo.com> <83a5ypph1y.fsf@gnu.org> <837cttpf0t.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="21746"; mail-complaints-to="usenet@ciao.gmane.io" Cc: luangruo@yahoo.com, 63187@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Apr 30 18:49:11 2023 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 1ptAEY-0005Sj-Bs for geb-bug-gnu-emacs@m.gmane-mx.org; 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Sun, 30 Apr 2023 09:48:16 -0700 (PDT) In-Reply-To: <837cttpf0t.fsf@gnu.org> 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:260844 Archived-At: On Sun, Apr 30, 2023 at 11:26=E2=80=AFAM Eli Zaretskii wrote= : > > > From: Aaron Jensen > > Date: Sun, 30 Apr 2023 10:57:35 -0400 > > Cc: luangruo@yahoo.com, 63187@debbugs.gnu.org > > > > For what it's worth, disabling it has had no discernible impact on > > scroll performance on my machine (which is an M1) > > scrolling_window is not about scrolling. It's a redisplay > optimization that attempts to speed up redrawing a window by scrolling > on display the stuff already shown, when that is deemed less costly > than redrawing every screen line that has changed. Ah, so is it used (for example) when you insert a newline in part of a buffer? How might I reproduce a usage of it both so I can benchmark and play around with it when it is enabled to see if I can trigger the bug I'm seeing?