From: Roger Pack <rogerpack2005@...>
Date: 2008-12-21T09:38:09+09:00
Subject: [ruby-core:20739] Re: use of require thread safety

>> Thanks for fixing that in 1.9 trunk.  [now if two threads request the
>> same file the second blocks till the first "finishes"]
>
> Is this behavior now specified? I don't remember this ever being resolved.
>
> - Charlie

Good question.
-=R