Pete,
From: Pete Resnick <presnick(_at_)qualcomm(_dot_)com>
Subject: Re: CTE:
Date: Thu, 15 Dec 1994 15:16:07 -0600
I went back to the archive and there was a long discussion about this
around October 24, 1994. Evidently it was decided that NUL, bare CR, and
bare LF are not handled properly by most MTAs. (I don't think it's worth
rehashing those arugments here; some people agree and some don't.) In any
event, it looks like the only choices with ISO-2022-JP is to use QP or
BASE64 (or straight binary if anything supported it) as your CTE.
As Keith explained, ISO 2022 JP doesn't in practice include bare NUL,
CR, and LF.
I agree that RFC 1468 is a little bit ambiguous, but I think BNF words
started with *single* are prepared for US-ASCII on this RFC. (Remember
ISO 2022 JP is switching mechanism for US-ASCII -- single byte -- and
JIS X 0208 -- double bytes --.)
--Kazu