def short_author_formatter(copyright_year_string, authors):
    """
    >>> print('\\n'.join(short_author_formatter(
    ...     copyright_year_string='Copyright (C) 1990-2010',
    ...     authors=['Jack', 'Jill', 'John']*5)))
    Copyright (C) 1990-2010 Jack, Jill, John, Jack, Jill, John, Jack, Jill, John, Jack, Jill, John, Jack, Jill, John
    """
    blurb = '{} {}'.format(copyright_year_string, ', '.join(authors))
    return [blurb]
