[EAI] Re: Message-ID

[Frank Ellermann <nobody at xyzzy.claranet.de>]

Kari Hurtta wrote:

> chapter "6.  Email header Downgrading"

> |   Message-ID:, Date:, In-Reply-To:
> |      "ID"s and "Date"s does not contain UTF-8 characters.

Yeah, there are tons of [CFWS] in 2822, and the "C" is for
<comment>.  Proposed fix:

-   Message-ID:, Date:, In-Reply-To:
-      "ID"s and "Date"s does not contain UTF-8 characters.
+   In-Reply-To:, Message-ID:, References:, Resent-Message-ID:
+      RFC 2822 <msg-id>s don't contain UTF-8 characters.
+   Date:, Resent-Date:
+      RFC 2822 <day-of-week>, <date>, and <time> as used in
+      a <date-time> don't contain UTF-8 characters.

Maybe we should limit our efforts to header fields relevant
for EAI (anything with an address), and stay from redefining
CFWS everywhere.

Quick shot:  We could introduce <IFWS> for all header fields
containing addresses, where the "I" is an "internationalized
comment".  Or better <UFWS> for an "UTF-8 comment".  Or maybe
that's a bad idea, but I certainly don't want any "UFWS" or
"IFWS" or UTF-8 in *_MIME_version_1.0_* part headers (i.e. in
any Content-* header fields of a message/utf-8 part).

Frank



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