[UA-EAI] [UA-discuss] Regular Expression To Validate EAI Addresses

[John Levine]

In article <8EF402E4-3512-4EB3-8296-38C831CA7DDA at viagenie.ca> you write:
>On 14 Aug 2020, at 13:19, Abdalmonem Tharwat Galila wrote:
>
>> Marc, I doubt that engines can not understand this !!
>
>you are top posting, so I’m not sure you are referring to what. I’m 
>guessing that you are referring to my comment on « not all regex 
>engines support Unicode properties ». I don’t have any data of all 
>regex engines, but I’ve encountered in the past regex engines not 
>supporting Unicode properties. ...

In this context, I think the only regex engine that matters is the one
in Javascript, since the most likely place to use the expression is to
validate web form input.  That regex does have the Unicode properties.