I don't believe that the 8bit content-transfer-encoding was intended
to be used with contents that can contain the entire range of octet
values from 0-255.
If I understand Ohta-san correctly, he believes that 8bit is an
appropriate label for such cases.
OK.
I think we agree that the current MIME spec does not sufficiently
specify when the 8bit label is or is not appropriate.
No, I don't. I think some people are accustomed to ignore clear
specifications on allowable code points.
And, then, some people even say 8bit is CR, LF, 32-126, and 160-255
and impose further non-standard restrictions on what can be transmitted.
For example, though Keith think that line wrapping, which is not so
harmful for Euuropean languages, should be allowed, it is harmful
for messages with ISO-2022-JP or ISO-2022-KR encoding.
Masataka Ohta