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From: Dave Love <d.love@dl.ac.uk>
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Subject: Re: bad rfc2047 encoding
Date: 22 Aug 2002 12:47:03 +0100
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Simon Josefsson <jas@extundo.com> writes:

> "To: \"=?iso-8859-1?q?Gro=DFjohann?=, K (Kai)\"
>   <Kai.Grossjohann@CS.Uni-Dortmund.DE>
>  "

Well, that's invalid too.

> This is with EMACS_21_1_RC.

I was using your patch (in a non-vanilla 21.2).  It looks as though
some of the insufficiently-tested changes I made for Emacs 22 were
responsible for the differences, sorry.  I think that just indicates
in another way that rfc2047.el doesn't DTRT.  I guess the use of Emacs
charsets saves it from going badly wrong in this case by chance, but
it's not generally right.  It's coding systems which are
(more-or-less) equivalent to MIME charsets and need to be checked, not
Emacs charsets.