Mitchell Hashimoto cc01049d55 macos: select split above/below should go to correct split when nested
Fixes #1330

I admit this code is a mess to understand, so I'm not 100% certain this
fix is correct. It definitely fixes #1330 but I'm not sure if this
breaks other split scenarios.

I believe that our logic here was simply wrong, notice that left/right
had opposite logic and this brings it all into consistency.

Long term, we should redo all of our directional movement since we've
refactored how split state is stored now on the controller with parent
references.
2024-01-19 21:11:20 -08:00
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