Support "u" and "U" and "^R".

[Chad Miller]

Support undo, undo-all-for-this-line, and re-do.

undo and redo pop operations off the stack and do not themselves count as an operation to be pushed on to the stack.

3dd u

should leave the state as it was.

5x 10x u

should remove 5 characters from the buffer.

5x 10x U

should leave the state as it was.

5x u ^R

should remove 5 characters from the buffer.

[Stephen Moore (delfick)]

Hello,

Unfortunately, because I'm using the undo and redo menu items whenever you press u or ^R I don't have any explicit control over what is or isn't undone/redone.

so :

3dd : results in needing to do two undos
5x 10x u does the same as what you want 5x 10x U to do
there is no U keybinding
5x u ^R does what you want :)

I'd be very happy if someone could show me how to fix this, but for now, I'm unsure how I would

Sorry