Constant BASE64_MIME
pub const BASE64_MIME: Encoding;
MIME base64 encoding
This encoding is a static version of:
# use ;
let mut spec = new;
spec.symbols.push_str;
spec.padding = Some;
spec.wrap.width = 76;
spec.wrap.separator.push_str;
assert_eq!;
It does not exactly conform to RFC2045 because it does not print the header and does not ignore all characters.