tests/readlink.py

context: add a no-op _prestatus method

This patch adds a private _prestatus method so that certain contexts, such as
workingctx, can add custom pre-processing to status.

#!/usr/bin/env python

import errno, os, sys

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

sys.exit(0)