graftcopies: use _filter() for filtering out invalid copies
`graftcopies()` (formerly called `duplicatecopies()`) checked that the
copy destination existed in the working copy, but it didn't check that
copy source existed in the parent of the working copy. In
`test-graft.t` we can see that as warnings about not finding ancestors
of the copied files, and also empty commits getting created.
This patch uses the existing `_filter()` function for filtering out
invalid copies. In addition to the aforementioned types, that also
includes copies where source and destination is the same.
Differential Revision: https://phab.mercurial-scm.org/D7859
from __future__ import absolute_import
from mercurial.utils import procutil
# XXX: we should probably offer a devel option to do this in blackbox directly
def getuser():
return b'bob'
def getpid():
return 5000
# mock the date and user apis so the output is always the same
def uisetup(ui):
procutil.getuser = getuser
procutil.getpid = getpid