swap the meaning of alt and shift in the undo commands

[M-Programer]

since alt is used to reverse the direction of the motion in commands like f and t, and shift is used to deal with extend (basicly selection) like in all other commands

can we swap <a-u> with U so that alt for redo instead of undo and shift for selection history rather than change history

I would like hiding that change behind an option to give people time to adapt to it, and a few versions afterward make the default of kakoune to use for redo and U for undo selection.
and so u stays the same and does the same thing (alt for redo the last edit, shift for selection rather than edits)

[vbauerster]

It sounds like a plausible change and it's easier to bear in mind that small u: I deal with undo history and big U: I deal with selection change where alt just controlling direction.

[mawww]

While I agree this mapping makes more sense, I am not sure breaking user mappings and possibly scripts (although I wonder what kind of script would rely on undo/redo) is worth the improved consistency.

[arrufat]

I am willing to break 7 years of muscle memory for the sake of consistency.