def list_known_codes(s, unique=True, rgb_mode=False):
    """ Find and print all known escape codes in a string,
        using get_known_codes.
    """
    total = 0
    for codedesc in get_known_codes(s, unique=unique, rgb_mode=rgb_mode):
        total += 1
        print(codedesc)
    plural = 'code' if total == 1 else 'codes'
    codetype = ' unique' if unique else ''
    print('\nFound {}{} escape {}.'.format(total, codetype, plural))
    return 0 if total > 0 else 1
Find and print all known escape codes in a string,
        using get_known_codes.