graft: do not use `.remove` on a smart set (regression) Revset calls use to return a list. Graft use to mutate that list. We cannot do this anymore leading to a crash when grafting multiple changeset with a revset. File ".../mercurial/commands.py", line 3117, in graft revs.remove(rev) AttributeError: '_addset' object has no attribute 'remove' We are late in code-freeze so we make the shortest possible fix by turning it back to a list.