tests/readlink.py

narrow: add capabilities for local repos, not just remote peers

This fixes the bug where running `hg clone --narrow ./local-repo`
fails with

    abort: server does not support narrow clones

even when the server has narrow enabled.

Differential Revision: https://phab.mercurial-scm.org/D10357

#!/usr/bin/env python3

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)