"D. J. Bernstein" <[EMAIL PROTECTED]> wrote:
> Good names never include uppercase non-ASCII characters.
That would solve the problem, but at a price. ASCII names are allowed
to use mixed case. It would be unfair to deny the same flexibility to
non-ASCII names. Maybe it's worth sacrificing that flexibility for the
sake of simplicity, but it's something to consider.
> If your mail software has small limits on address length, switching
> userhost from a UTF-8 IDN to an ACE IDN will drastically increase your
> chance of hitting those limits.
UTF-8 gets less than 6 bits per octet on average for the non-ASCII
octets, and the ACEs generally use base-32, which is 5 bits per
character, so that's not much different. And since some of the ACEs
employ compression techniques, they might even be shorter than UTF-8 for
many strings.
AMC
