Info Catalog
vip: Differences from Vi
vip: Changing
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’.