138
138
old = revision[0].as_tree(wt.branch)
139
139
except errors.NoSuchRevision as e:
141
141
if (len(revision) > 1) and (revision[1].spec is not None):
143
143
new = revision[1].as_tree(wt.branch)
144
144
new_is_working_tree = False
145
145
except errors.NoSuchRevision as e:
149
149
with old.lock_read(), new.lock_read():