Scroll window up/down fails sporadically

[dcalhoun]

The scroll window up/down commands no longer work consistently.

Behavior

As a user, I press and hold ctrl + e or ctrl + y.

Expected Outcome

They editor moves up or down by a single (1) line for as long as I hold the keys, until reaching the end of the document.

Current Outcome

The editor:

• Moves a single line, then halts.
• Does nothing for a few seconds, then begins scrolling as expected.
• Scrolls the document, but displays artifacts frozen in place.

Environment

• Mac OS X 10.11.2 (15C50)
• Atom v1.3.2
• vim-mode v0.64.0
• Various different files types (e.g. – .html.erb, .scss, .js)

cc/ @maxbrunsfeld – possibly related to your changes in #938. This seemed to start with v0.64.0.

[gittyupagain]

Scrolling feedback is only shown in the main window when the cursor is on the 3rd or 4th line from the top (with ctrl + e) or bottom (with ctrl + y). When the problem is happening, the proper view isn't updated until another key is pressed, or the cursor reaches the 3rd or 4th line. The minimap window properly shows what should be shown in the main window, regardless of cursor position.

[dcalhoun]

This bug appears to affect all scroll commands (e.g. – half page down, page down).

If you use ctrl + f to scroll to the bottom of the document, you end up a few lines (~10) above the bottom with the cursor off the screen. After reaching the bottom of the document, if you press k, the window jumps to reveal the bottom of the document and the cursor.

[maxbrunsfeld]

@dcalhoun @gittyupagain Sorry for the poor experience continuing. I can't reproduce this on my master build of Atom, I'm wondering if it was fixed by either atom/atom#9444 or atom/atom#10062.

If you're interested, could you try Atom v1.4.0-beta3? The first PR mentioned above is included in that release. If that doesn't help, I believe the fix may be on master, and we're going to release new beta and stable versions by Wednesday.

[gittyupagain]

I just tried Atom v1.4.0-beta3, and I still see the ctrl+e / ctrl+y problem. I don't see the problem with ctrl+f that @dcalhoun is seeing, but I didn't see that with Atom v1.3.3 either.

Trying to isolate the problem, I removed my ~/.atom directory. After relaunching and installing just vim-mode, I still see the problem with Atom v1.4.0-beta3.

[dcalhoun]

I never tried Atom v1.4.0-beta, but this bug is definitely still a problem in the v1.4.0 release.

[dragonxlwang]

yes, it is still a bug in v1.4.1. Hope it could get fixed soon.

[narychen]

+1

[dcalhoun]

Both issues appear to be resolved in Atom v1.4.2.

[maxbrunsfeld]

Really sorry for the wait on this one @dcalhoun. I thought I had back-ported the fix to an earlier release 😬.