8. Problem: RFC 1342 allows for "B" and "Q" encoding, but does not allow
for the "null" encoding that corresponds to RFC 1341's "7bit".
Suggested fix: Add a new one called "7".
[...] This is a bit formalistic but it may matter to
people who against the advise of their doctors include national 646
varient sets in the headers.
I agree with Greg here, but I would like to let everybody else know
that my motivation was *not* to let ISO 646 back in through the back
door, but rather to allow for "future" charsets that just happen to be
7-bit, such as the "MU" charset that I proposed some time ago.