Does anybody have insight why RFC2047 explicitly prohibits encoding parameter
values and quoted strings? I am looking through archives but seems cannot find
appropriate discussion. At some point using encoded words inside quoted strings
was removed from the initial proposal and there should have been a good reason
which I don't immediately see...
Ultimately I am curious why, instead of extending RFC2047 to parameters, we
ended up with RFC2231?
+ An 'encoded-word' MUST NOT appear within a 'quoted-string'.
+ 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'.
--
Yuri Inglikov