[UA-discuss] Regular Expression To Validate EAI Addresses

[Abdelmeniem Tharwat]

Could we have an examples so I could fix that !!

Sent from my iPhone

> On Aug 14, 2020, at 5:49 PM, Marc Blanchet <marc.blanchet at viagenie.ca> wrote:
> 
> On 14 Aug 2020, at 11:32, Abdelmeniem Tharwat wrote:
> 
>> Dear colleagues,
>>                I hope that you are doing well, since along time I tried to use regex to validate EAI addresses for many project I have related to UA, I used the tool here<https://rubular.com/> and used this
>> Regex "^[\p{L}.%+-]+@[\p{L}.-]+\.[\p{L}]{2,}$" to validate some EAI addresses and it works well like the below screenshot.
> 
> {L} is for Unicode property Letter. So:
> - for IDNA, it is near (as IDNA base is Unicode Letter property) but not quite. see RFC5892
> - for EAI, then it is restricting a lot since the mailbox can be almost any UTF8 string. see RFC6531
> 
> So you may want to use that regex, but be aware of its side-effects, including not accepting some domains and mailboxes.
> 
> Finally, not all regex engines support Unicode properties, so make sure the one used support it.
> 
> Regards, Marc.
> 
>> 
>> [cid:image010.png at 01D67260.F5721690]
>> 
>> 
>> Thanks a lot.
>> 
>> All the Best,
>> Abdalmonem Tharwat Galila
>> Deputy Manager, Dot Masr Registry,
>> Operation Sector.
>> 
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