tests/readlink.py

rebase: use hard-coded template for one-line commit description

This is to prepare for making making the one-line summary
customizable. The template ended up pretty complicated because of the
conditional output of "(<bookmarks etc>)". Maybe we can simplify the
template later.

Differential Revision: https://phab.mercurial-scm.org/D9250

#!/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)