Michael Everson wrote:
> It seems to me that the Plane 14 tags shouldn't have both uppercase and
> lowercase if you aren't going to let people use the uppercase.
It was decided to create a tag analogue of every ASCII character.
> (It seems to me that the Plane 14 tags were a very silly idea, but oh well.)
Part of the IETF was insisting that they had to have language tags in plain
text as a substitute for (ab)using ISO 2022 for language tagging (as they
had been doing before: if it's JIS-encoded, it *must* be Japanese), and were
proposing an obnoxious modification of UTF-8 to carry the language information.
Plane 14 was a prophylactic spell.
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