If we agree we're doing last regrets, we could use it as an opportunity
to emit some extra information.
For example, in the case of darcs send:
(Patches would be be sent to email@example.com)
Would you like to send these patches? [Yn...]
Or in the case of issue75
(Backup bundle would be saved in _darcs/obliterate/2014-03-29-wobble-
Would you like to obliterate these patches?