#! /usr/bin/python3

import sys
import os


def explicit(s):
    """Convert a string or bytestring into an unambiguous human-readable string."""

    if isinstance(s, str):
        return 'u"%s"' % (' '.join('U+%04X' % (ord(c),) for c in s))
    else:
        return 'b"%s"' % (' '.join('%02X' % (c,) for c in s))


fse = sys.getfilesystemencoding()

print('LANG = %r' % (os.getenv('LANG'),))
print('fse = %r' % (fse,))
print('sys.argv[1] = %s' % explicit(sys.argv[1]))
print('re-encoded using UTF-8: %s' % explicit(sys.argv[1].encode('utf-8', 'surrogateescape')))
print('re-encoded using fse: %s' % explicit(sys.argv[1].encode(fse, 'surrogateescape')))
print()