Hatuka*nezumi - IKEDA Soji writes:
I understood. I worried that shortcuts such as `11.1% algorithm' would break backward compatibility on implementation for any
charsets (for example, an ISO-8859-1 subject line including a bit many accented characters).
At least charsets below allow both methods (while some implementations prefer quoted-printable for encoding):
RFC1947 (ISO-8859-7) Greek
RFC1555 (ISO-8859-8) Hebrew
TIS-620 (ISO-8859-11) Thai
Perhaps more recently-coming (sometimes non-Latin) charsets allow both methods... is that right?
_Any_ character set may be used with either quoted-printable or base64. The content transfer encoding is completely independent of the text character set. In fact, sqwebmail can simply set Content-Transfer-Encoding: 8bit for any character set. The only time the message must be converted to some 7-bit format (either quoted-printable or base64) is when the message is PGP-signed.
pgpf1YlsawuZk.pgp
Description: PGP signature
