[Vm-dev] [OpenSmalltalk/opensmalltalk-vm] x11: emulate only up/down scroll events via keyboard, not left/right (#432)

[Tom Beckmann]

This restores the behavior to what we previously had and fixes an
annoying side effect, where vertical scrolling on a touchpad causing
occassional horizontal scrolling events would move the cursor in a text
editor, since we generate ctrl+left/right.
You can view, comment on, or merge this pull request online at:

  https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/432

-- Commit Summary --

  * x11: emulate only up/down scroll events via keyboard, not left/right

-- File Changes --

    M platforms/unix/vm-display-X11/sqUnixX11.c (3)

-- Patch Links --

https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/432.patch
https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/432.diff

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