merge: change default of hg.merge()'s "force" argument from None to False...
merge: change default of hg.merge()'s "force" argument from None to False
The argument is only passed to `mergemode.update()`, and that function
treats `None` just like `False`, so `False` seems clearer.
Differential Revision:
https://phab.mercurial-scm.org/D8166