tests/readlink.py

revset: do not rewrite ':y' to '0:y' (issue5385)

That's no longer valid since the revision 0 may be hidden. Bypass validating
the existence of '0' and filter it by spanset.

#!/usr/bin/env python

from __future__ import absolute_import, print_function

import errno
import os
import sys

for f in sys.argv[1:]:
    try:
        print(f, '->', os.readlink(f))
    except OSError as err:
        if err.errno != errno.EINVAL:
            raise
        print(f, '->', f, 'not a symlink')

sys.exit(0)