[UA-EAI] WhatWG issue regarding <input type="email"> is open (#4562)

[Andre Schappo]

Having unconstrained EAI (ie any unicode character) would not work as has been discussed many times.

So, one possible way forward is to allow constraints to be specified in the html so that reasonable first level validation then becomes possible.

I offer 2 examples of constraining:

① It is a long long time since I registered an IDN but at that time one needed to select the language of the domain name one was registering. Thus one has a mechanism for constraining validation of such a domain name.

② One of my internationalised programming challenges constrains registration of the mailbox name https://jsfiddle.net/coas/2uLhcfef

So, first thoughts for a constraint is something like: <input lang="ko" type="eaimail">

André Schappo

________________________________
From: UA-EAI <ua-eai-bounces at icann.org> on behalf of Martin J. Dürst <duerst at it.aoyama.ac.jp>
Sent: 09 June 2020 09:04
To: John Levine <john.levine at standcore.com>; ua-eai at icann.org <ua-eai at icann.org>
Subject: Re: [UA-EAI] WhatWG issue regarding <input type="email"> is open (#4562)

Hello John,

On 09/06/2020 05:26, John Levine wrote:

> The W3C's version of an email field would have allowed random
> intermixed UTF-8 characters in different scripts and different
> directionalities in an address which is unlikely to match what any
> real mail system ever does.

Agreed, but narrowing that may quickly throw out reasonable, working
addresses.

Regards,   Martin.
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