Hi steve,
I would not be so sure about 2) ... I know that Cyrus IMAP used to
reject mail messages with headers that contained non-ASCII
characters. And to me the biggest problem is the encoding contains
the only place where the character set is listed. The only times
I've seen "bare" UTF-8 is in spam messages. Maybe it works fine,
but at the very least you're going to have character set issues.
This is probably a digression, but FWIW I'm pretty sure raw the UTF-8
non-breaking space (0xa0)
U+A0 is NO-BREAK SPACE but it's not UTF-8 encoded. That would be 0xc2
0xa0 so an extra top-bit-set byte would also be present. Perhaps you're
thinking of ISO-8859-1 or Windows-1252.
and various raw windows-1252 character encodings (e.g. 0x2e for full
stop) are somehow fairly common.
0x2e is also 7-bit ASCII. ;-)
Cheers, Ralph.
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