In <[EMAIL PROTECTED]>, on
05/13/2008
at 12:15 PM, Tony Harminc <[EMAIL PROTECTED]> said:
>Over editing is often worse than under,
I'd be tempted to say always worse, not just often. Don't do validation
without first learning what isa valid. A related sin is insisting on a
fixed format without telling the end user what that format is, e.g., if
you don't acept punctuation then tell the user that *BEFORE* he keys in
the data.
>Disallowing valid characters in email addresses. I'd say the majority of
>sites won't allow a plus sign,
In my experience it's not a majority, but certainly far too many.
>Same goes for all-numeric domain names.
Those are invalid. From RFC 1035:
<domain> ::= <subdomain> | " "
<subdomain> ::= <label> | <subdomain> "." <label>
<label> ::= <letter> [ [ <ldh-str> ] <let-dig> ]
Now, you might want to accept invalid names regardless, but rejecting them
is not in the same category as rejecting RFC complaint names.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
ISO position; see <http://patriot.net/~shmuel/resume/brief.html>
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)
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