Consensus Call on Latin Sharp S and Greek Final Sigma
John C Klensin
klensin at jck.com
Sun Nov 29 18:35:56 CET 2009
--On Saturday, November 28, 2009 6:28 PM -0500 Vint Cerf
<vint at google.com> wrote:
> Should Latin Small Letter Sharp S and Greek Small Letter Final
> Sigma be PVALID in IDNA2008 or not:
>
> Please Respond by choosing among the following:
>
> (1) Both characters should be PVALID
> (2) Both characters should be DISALLOWED
> (3) Only Latin Small Letter Sharp S should be PVALID
> (4) Only Greek Small Letter Final Sigma should be PVALID
(1) Both PVALID.
It is the right answer for the orthography of the languages
involved; the key registries have indicated that they can deal
with the transition if they have to (even while expressing a
preference to not have to); Rationale already outlines some
transition strategies; and, because a registry that don't want
to deal with the characters is free to prohibit them as a
registry restriction, it provides the most flexibility.
john
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