ietf-822
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quoting non-ascii-7 chars in the header

1991-09-19 13:33:58
Hi,

Credit for the following belongs to David Robinson:

Non-ASCII-7 chars in the header: there is already a simple
solution, and it is in 822.

Note that we are speaking of the header, not the envelope,
which remains ASCII-7.

Octets that are header meta-chars, or (new part:) _look_
like meta chars in 7 bits, or are substituted onto the
ASCII-7 code point(s) of meta-char(s), must be escaped or quoted.
(When not serving their function, of course!) In the case of \ and ",
sometimes both escaped and quoted.

Note that I say "octets" here, the octet might be part of
a multi-octet character.

If my middle name was )"\ I might use:

From: "Robert )\"\\ Ullmann" <Ariel(_at_)Relay(_dot_)Prime(_dot_)COM>

If my middle initial was |!!!(  [hex FC 21 21 21 28 in AUC,
code point 233013 of UCS-32], then the line might be:

From: "Robert |!!!\( Ullmann" <Ariel(_at_)Relay(_dot_)Prime(_dot_)COM>

Rob

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