www.delorie.com/gnu/docs/emacs/vip_10.html

search

	Buy the book!

VIP

1.4.1 Undoing

You can repeat undoing by the . key. So, u will undo a single change, while u . . ., for instance, will undo 4 previous changes. Undo is undoable as in Vi. So the content of the buffer will be the same before and after u u.