inhbit: don't crash on commit with no changes Before this patch inhibit would crash when running hg amend with no changes. This patch fixes this case and adds a test to prevent regression.

evolve: add a test for prune --keep -r . with active bookmark We recently changed the behavior of prune to make sure that the active bookmark stays active after prune -r . This patch adds a test for the case of prune --keep -r . that does not take the same code path.