tests/readlink.py

merge: have merge.update use a matcher instead of partial fn

This is relatively rarely used functionality, but migrating this to a
matcher will make future work on narrow clones more feasible.

#!/usr/bin/env python

import errno, os, 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, 'not a symlink'

sys.exit(0)