tests/readlink.py

cmdutil: split functions of log-like commands to new module (API)

cmdutil.py is painfully big and makes Emacs slow. Let's split log-related
functions.

  % wc -l mercurial/cmdutil.py
  4027 mercurial/cmdutil.py

  % wc -l mercurial/cmdutil.py mercurial/logcmdutil.py
  3141 mercurial/cmdutil.py
   933 mercurial/logcmdutil.py
  4074 total

#!/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)