bug#32790: 27.0.50; point jumps unexpectedly after delete-window

[Juri Linkov]

>> Could you add aliases for 'up' and 'down' in window-in-direction?
>> Then we won't need such special handling in windmove.el:
>>
>>    (window-in-direction
>>     (cond
>>      ((eq dir 'up) 'above)
>>      ((eq dir 'down) 'below)
>>      (t dir))
>>     window nil arg windmove-wrap-around t)
>
> Should be done now on master.  Please test.

Sorry, it still fails with (split-window nil nil 'up)  :-(