On Wed, Apr 12, 2017 at 07:45:41PM -0400, Andrew Sullivan wrote: > On Wed, Apr 12, 2017 at 03:47:14PM +0000, Viktor Dukhovni wrote: > > > Just move on to non-transitional UTS#46. > > Given that its mappings include many emojis, which aren't allowed > under either IDNA2003 or IDNA2008, I think there is an apparent > problem with UTS#46 too. One might be forgiven for wondering why the > UTC decided that it knew something about domain names and the history > of how they are used.
Well, IIRC they sensibly converged on a case-folded normal form that ensures that https://Духовный.org maps to the same underlying wire-form domain as https://духовный.org, i.e. both result in queries for xn--b1adqpd3ao5c.org. AFAIK, those would generally be different domains under IDNA2008. While is true that UTS#46 maps <U+1F4A9>.org to xn--ls8h.org, (see http://www.fileformat.info/info/unicode/char/1f4a9/index.htm) that seems to be a small price to pay for avoing surprising case-sensitive behaviour. -- Viktor. _______________________________________________ DNSOP mailing list [email protected] https://www.ietf.org/mailman/listinfo/dnsop
