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* bug#28342: 26.0.50; (OSX) Jumpy Scrolling using Trackpad
@ 2017-09-04  0:22 James Nguyen
  2017-09-05 20:14 ` Charles A. Roelli
  0 siblings, 1 reply; 10+ messages in thread
From: James Nguyen @ 2017-09-04  0:22 UTC (permalink / raw)
  To: 28342


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).





^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2017-09-10  2:40 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-09-04  0:22 bug#28342: 26.0.50; (OSX) Jumpy Scrolling using Trackpad James Nguyen
2017-09-05 20:14 ` Charles A. Roelli
2017-09-06  1:14   ` James Nguyen
2017-09-06  8:53     ` Alan Third
2017-09-06 16:55       ` Eli Zaretskii
2017-09-07  1:58         ` Nick Helm
2017-09-09 14:25           ` Eli Zaretskii
2017-09-09 14:22         ` Eli Zaretskii
2017-09-10  1:14           ` James Nguyen
2017-09-10  2:40             ` Eli Zaretskii

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