From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: James Nguyen Newsgroups: gmane.emacs.bugs Subject: bug#28342: 26.0.50; (OSX) Jumpy Scrolling using Trackpad Date: Sun, 03 Sep 2017 17:22:29 -0700 Message-ID: NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1504484612 3409 195.159.176.226 (4 Sep 2017 00:23:32 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 4 Sep 2017 00:23:32 +0000 (UTC) To: 28342@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Sep 04 02:23:12 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dofAT-0008F0-TD for geb-bug-gnu-emacs@m.gmane.org; Mon, 04 Sep 2017 02:23:10 +0200 Original-Received: from localhost ([::1]:41853 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dofAa-0004te-QN for geb-bug-gnu-emacs@m.gmane.org; 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a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-type:date:from:message-id :mime-version:subject:to:x-me-sender:x-me-sender:x-sasl-enc :x-sasl-enc; s=fm1; bh=vvPxSdlwg4crTcJDjrGgXTygt9G+9K98ucCcLdSNl W8=; b=MB4dM7MZCWkilu7n13ti0z0orjWSDD7u2MmpVg1Rdqec+Heyv7jqmU+SE LI73iBKA1zr3Bs10fTrnWI0SuV1YbRwOLFMc9+ruYnZV1ZBNVb5fGSKD5VWXhA6/ eJJBwsNc1FGaAFiHQ4w4uf69kY7co+9AlsUsUkgP8oXQo7gSJ5StyqgBAO1jgnrd A2V9zV85fnlpMqcXCFXnrfabwFlZ997Sf+VBDPd4SKPpHaKYjq4u4wjB3GvXRsCB 77BkWnNdEnSjIm7AaQBTWxZNIe0pOBPVU0eBL053hkMhAVmynvVOeqzE6VmCPxsg 0pB3Gmd5cyxBJFRESo3uk+4B8bGRQ== X-ME-Sender: X-Sasl-enc: jO7azDIk3gamX2wfphhh2GJIX4u4aJOeJeoxxcUMKV7m 1504484549 Original-Received: from localhost (cpe-76-171-234-82.socal.res.rr.com [76.171.234.82]) by mail.messagingengine.com (Postfix) with ESMTPA id A414424323 for ; Sun, 3 Sep 2017 20:22:29 -0400 (EDT) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:136561 Archived-At: Recipe: emacs -Q (setq scroll-margin 5 scroll-step 1 scroll-conservatively 10000 scroll-preserve-screen-position 1 mouse-wheel-scroll-amount '(1) mouse-wheel-progressive-speed nil mouse-wheel-follow-mouse 't) Open another buffer (init.el for example). Use only one window. Scroll with trackpad up and down. Use trackpad mouse to click past the scroll margin. Try scrolling up and down with trackpad. It will jump wildly. Video: https://www.dropbox.com/s/2jwb3p2sul9q36d/JumpyScrolling.m4v?dl=0 Notes: Only seems to happen when there's one window. I could not reproduce it if I opened a second window (as shown in the video.) Happens on both Emacs 25 and Emacs 26 (master branch).