[UA-discuss] [UA-International] IDN-as-punycode-encoded-label in Baidu search engine results

[Andrew Sullivan]

On Wed, Dec 02, 2015 at 03:02:06PM +0000, Tan Tanaka, Dennis wrote:
> I think you may be onto something wrt developers (i.e. implemeters) being fixed in IDNA2003 + TR46.
> 

If it's TR46, it's not IDNA2003, it's IDNA2008 with TR46.  TR46 is
supposed to be a transition specification that, among other things,
maps away the incompatibilities between 2003 and 2008.  Unfortunately,
since it has no sunset mechanism, it's making the problem worse, not
better.  I can't say for sure why UTC thinks it is an improvement.

> “fass.de”. Interestingly, IE didn’t recognize the punycode-encoded
> form of the IDN.

_This_ suggests it might be IDNA2003-only, because under 2003 the ß
simply had no punycode-encoded version (they weren't A-labels then,
because the definition wasn't 1:1).

A

-- 
Andrew Sullivan
ajs at anvilwalrusden.com