'\'attachment\', specifying an ambiguous filename.
currency-sign=Â€ in the simple RFC2231/5987 format, and euro-sign=â¬ in
RFC2231-with-continuations format.
A UA that supports could pick either, or ignore both because of the
ambiguity.'

def test_attfnboth3(self, header_checker):

    header_checker.check_ignored("attachment;    filename*0*=ISO-8859-15''euro-sign%3d%a4;    filename*=ISO-8859-1''currency-sign%3d%a4")
