1954
1954
help='Use this command to compare files.',
1962
1966
def run(self, revision=None, file_list=None, diff_options=None,
1963
prefix=None, old=None, new=None, using=None):
1967
prefix=None, old=None, new=None, using=None, format=None):
1966
1971
if (prefix is None) or (prefix == '0'):