UTC Response to "Letter to Unicode Technical Committee on IDNA2008"
lisam at us.ibm.com
Tue Dec 8 05:46:35 CET 2009
The UTC appreciates the difficulty for users of IDNs, the registries,and
all involved if lowercase sharp s (Latin Small Letter Sharp S (U+00DF))
and small final sigma (Greek Small Letter Final Sigma (U+03C2)), in
particular, are mapped to other characters. As you know, our concerns are
compatibility and potential security issues. However, based on the many
ongoing dicussions and much thought, the UTC would not be opposed to have
lowercase sharp s, final sigma, and even joiner and non-joiner be valid
and not mapped, as long as there can be policies in place for a transition
period (of say 5 years) that will manage the expected compatibility
The key for us is having policies for a well-managed transition with
sufficient time for browser and other application upgrades. Without such
policies in place, we would favor continuing the IDNA2003 treatment of the
four above-mentioned characters.
Chair, Unicode Technical Committee
Vint Cerf <vint at google.com> wrote on 11/28/2009 01:57:17 PM:
> A prompt response would be much appreciated considering we have
> delayed reporting the results of the IETF LAST CALL to the Internet
> Engineering Steering Group while this matter is debated.
> Vinton Cerf
> Chairman, IDNABIS Working Group of the Internet Engineering Task Force
More information about the Idna-update