bug#45502: [PATCH] Prettier key bindings in NS menu entries

[Mattias Engdegård]

The NS port shows key bindings in a rather cluttered way, with the key in 
brackets directly after the menu entry. The Mac port of Emacs is much neater 
with the bindings all aligned at a common tab position. We could do the same, 
but having done some experiments I actually prefer a right-alignment of the 
keys. Proof-of-concept patch attached.

The alignment is made by padding with spaces, and then with hair spaces for 
extra precision; the result is not perfect but probably better than what we 
have now. If I get some time, I might do an experiment with more precise 
formatting.

right-justify-keys.diff
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