[whatwg] type=email and IDN

Mounir Lamouri mounir.lamouri at gmail.com
Fri Feb 4 03:47:58 PST 2011

On 02/04/11 11:55, Anne van Kesteren wrote:
> This must have been brought up before as e.g.
> http://pukupi.com/post/2070/ is from June 2010, but I could not find
> anything quickly. Apparently people are using IDNs and cannot get them
> validated with email controls because the specification prohibits this.
> We should probably change that. Either by saying it should first be
> converted to Punycode and then validated, or by enhancing the pattern.
> (The email RFC might still be outdated on this point, I have not
> checked, but we have decided to not follow it anyway as it fails to
> match email addresses people actually use.)

As far as I understand it, the specification somewhat handles this by
telling UAs they "may" puny-encode/decode the value to show the IDN
value and still be able to validate it with the current rules [1].
Note that there is a bug open to make this "may" a "should" or a "must" [2].

[2] http://www.w3.org/Bugs/Public/show_bug.cgi?id=11579


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