'\'attachment\', specifying a filename of foo[1](2).html.
Missing the quotes. Also, "[", "]", "(" and ")" are not allowed in the
HTTP token production.
This is invalid according to Section 19.5.1 of RFC 2616 and RFC 6266,
so UAs should ignore it.'

def test_attfnbrokentoken(self, header_checker):

    header_checker.check_ignored('attachment;    filename=foo[1](2).html')
