From: Francois Yergeau (
Date: Tue Dec 01 1998 - 12:58:50 EST

À 19:24 30/11/98 -0800, Kenneth Whistler a écrit :
>[Additions to ISO 8859-7]
>And this will imply that there will need to be two MIME *charsets* -- one
>for the old version and one for the new version.

Not so. A MIME charset tag is meant to indicate only how to decode a
sequence of bytes into a sequence of characters, not necessarily the other
way around. Because of this, it is not necessary to have a new tag when a
charset is extended compatibly. The argument that was used to register a
version-independant tag for UTF-8 can be found in some detail in RFC 2279.
I believe that the same argument applies to other charsets that are
extended compatibly.

François Yergeau <>
Directeur de produit/Product manager
Alis Technologies inc., Montréal
Tél : +1 (514) 747-2547  Fax : +1 (514) 747-2561

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