undo commands, without a query or an error
Major Section:  HISTORY

:ubu! :x-4

The keyword command :ubu! is the same as :ubu, but with related queries suppressed appropriately, and with a guarantee that it is ``error-free.'' More precisely, the error triple (see error-triples) returned by :ubu! will always be of the form (mv nil val state). :Oops will undo the last :ubu!. Also see ubu, see ubt, and see u.