Re: unicode-1-1-utf7

From: Erik van der Poel (
Date: Tue May 25 1999 - 14:33:07 EDT

John Wilcock wrote:
> Various RFCs mention the MIME charset name "unicode-1-1-utf7", though
> semantically this refers to v1.1 of the Unicode standard.
> What is the correct MIME charset parameter to use for an UTF-7-encoded
> message? "unicode-1-1-utf7" or just "utf-7"?

The current charset registry can be found at:

As you can see, there is a charset called "UTF-7", defined by RFC 2152,
which mentions Unicode 2.0. A quick scan of 2152 did not reveal whether
UTF-7 always refers to the most recent version of Unicode (whereas UTF-8
is defined that way).

So if the message is not based on the Unicode 1.1 encoding (where Korean
characters were in a different block), I'd say you can just use "UTF-7".

However, the recipient(s) may not be using software that can interpret
such messages.


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