tests/readlink.py

histedit: use better meta-variable names than VALUE in help text

Before this change hg help histedit would use the default variable label:

    --commands VALUE
...
 -r --rev VALUE [+]

With this change the text will be in the usual help text style and a bit more
explanatory:

    --commands FILE
...
 -r --rev REV [+]

#!/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)