260
259
other_basis = other_branch.last_patch()
261
260
if base_revision == [None, None]:
265
265
raise UnrelatedBranches()
266
base_tree = get_revid_tree(this_branch, base_rev_id, tempdir,
271
base_tree = get_revid_tree(base_branch, base_rev_id, tempdir,
270
275
base_branch, base_tree = get_tree(base_revision, tempdir, "base")