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From: Lennart Borgman <lennart.borgman.073@student.lu.se>
Newsgroups: gmane.emacs.help
Subject: Re: How do I check if the format of an email address is valid?
Date: Sun, 02 Apr 2006 15:02:11 +0200
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Cc: help-gnu-emacs@gnu.org, Mathias Dahl <brakjoller@gmail.com>
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Xavier Maillard wrote:
>    From: Mathias Dahl <brakjoller@gmail.com>
>
>    Lennart Borgman <lennart.borgman.073@student.lu.se> writes:
>
>    > How do I do this in Elisp?
>
>    In the book Mastering Regular Expressions, there is a regexp covering
>    a full page (or was it more?) just for matching an e-mail
>    address. Good luck! ... :)
>
> Yeah, this is the longest regexp I have ever seen. Awesome !
>
> Once again, good luck :)
>
> Xavier
>   
For those who want to see the regexp a perl version is here:

    http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html