From RFC 2047:
+ An 'encoded-word' MUST NOT appear in any portion of an 'addr-spec'.
+ An 'encoded-word' MUST NOT appear within a 'quoted-string'.
+ An 'encoded-word' MUST NOT be used in a Received header field.
+ An 'encoded-word' MUST NOT be used in parameter of a MIME
Content-Type or Content-Disposition field, or in any structured
field body except within a 'comment' or 'phrase'.
However (Python 2.5.2):
'=?utf-8?b?QW5kcsOoIDxhbmRyZUBsb2NhbGhvc3Q+?='>>h = Header(u'Andrè <andre@localhost>')
h.encode()
I'm not sure if this can be considered a bug, but surely this is an
invalid header.
Thanks Manlio Perillo