[wp-hackers] Changeset 2877 - non-unique user IDs?

[Scott Merrill]

Matt Mullenweg wrote:
> Owen Winkler wrote:
> 
>> http://trac.wordpress.org/changeset/2877
>>
>> What's that all about?  We don't require unique user IDs for login now?
> 
> 
> It's needs to be enforced on the code level, not with database errors.
> The new user database is designed to be something modular you can plug
> into almost any application, bbPress and MU are just two other apps
> using it. It may continue to evolve before 1.6 goes "gold."
> 

Can't the code logic apply checks prior to registration, while leaving
the unique key in the schema so that the database will prevent any
mistakes that might slip past the code?

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