[darcs-devel] [patch1182] Implementation of the command 'darcs undo'.

[Ganesh Sittampalam]

Ganesh Sittampalam <ganesh at earth.li> added the comment:

I don't think we need to clear out the saved states explicitly, only when 
something invalidates them.

The user doesn't need to use 'darcs undo' if she doesn't want to, so I 
don't think they get in the way.

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