[UA-discuss] Regular Expression To Validate EAI Addresses

[Marc Blanchet]

On 14 Aug 2020, at 12:15, John Levine wrote:

> In article <A1234DFB-AE2B-4FA4-9FB7-B65D365651BD at viagenie.ca> you 
> write:
>> The best way would be to modify the regex engine itself to embed the
>> IDNA protocol inside it and then define a new regex token for IDNA 
>> and
>> then we will be in business… Not an easy task.
>
> Good catch on the digits, I missed that. To validate host names I
> think the least bad plan is not to try to build IDNA into regexes, but
> do it in two steps, use a loose RE but then validate the domain
> through an actual IDN library.

yeah. exactly what I said in the java-ua tutorial.

Marc.

>
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> Regards,
> John Levine, johnl at taugh.com, Primary Perpetrator of "The Internet for 
> Dummies",
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