[whatwg] type=email validation is too loose for practical applications

TAMURA, Kent tkent at chromium.org
Mon Aug 24 17:19:55 PDT 2009


http://www.whatwg.org/specs/web-apps/current-work/#e-mail-state
> A valid e-mail address is a string that matches the production
dot-atom-text "@" dot-atom-text
> where dot-atom-text is defined in RFC 5322 section 3.2.3.  
> [RFC5322]<http://www.whatwg.org/specs/web-apps/current-work/#refsRFC5322>

I'd like stricter rule for it. e.g.
dot-atom-text "@" 1*(ALPHA / DIGIT) 1*("." 1*(ALPHA / DIGIT))

I understand the current production, dot-atom-text "@" dot-atom-text, is a
subset of addr-spec of RFC 5322.  However dot-atom-text for the domain-part
is not practical.  The production accepts apparently unusable email address
like "tkent@!!!!"

-- 
TAMURA Kent
Software Engineer, Google



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