Re: [idn] Re: 7 bits forever!

On Wed, 03 Apr 2002 13:24:20 EST, "David Leung (Neteka Inc.)" said:

> If we are saying that the ACE <=> IDN(UTF8) so why is the two headers not in
> sync?
To paraphrase somebody (Was it Vernon Schreier?):

Either the two fields are semantically identical, in which case it is
superfluous to send one of them, or they are not, in which case there is
breakage if you use the one with less semantic content.

His comment was regarding text/plain and text/html, but is equally true here.

> also if new MUA always use the new headers and only old existing MUA wont be
> able to read the new headers will use the old ACE headers, so why MUA wont
> know which one is more recent?
You also have the case where you're using a new MUA, but the mail could have
passed through and old MTA that didn't know about the new headers, and thus
did a conversion on the old headers but not the new ones.

Those of us who lived throught the %-hack ages know ALL about this - you'd
get a mail that had a replyable 'From:' because an MTA had %-hacked it
for you, but a 'reply all' would fail miserably because the MTA had failed
to %-hack the CC: list.

-- 
                                Valdis Kletnieks
                                Computer Systems Senior Engineer
                                Virginia Tech

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