Offers an encoder for RFC 2047 encoded words.
use rfc2047::rfc2047_encode;
#[test]
fn test_encode_rfc2047() {
assert_eq!(
"Foo =?utf-8?q?a=C3=A4b?= =?utf-8?q?_=C3=A4?= bar",
rfc2047_encode("Foo aäb ä bar"),
);
}Words are encoded or not encoded as a whole. Only quoted-printable encoding is used.