Greek Casefolding sigma

[Markus Scherer]

On Mon, Mar 31, 2008 at 6:03 PM, Mark Davis <mark.davis at icu-project.org> wrote:
> I don't think the original Punycode mechanism would work, since I think it
> would be an incompatible change in the result compared to strings encoded
> under IDNA2003 (especially since, it only allows for 1 bit per character, as
> you say).

Does IDNA2003 forbid using mixed-case Punycode strings? I thought it
allowed them.

markus
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