Look at this commit
!= same as
dang, some of you are cranky
Spiffing answer old chap
And for the full skinny, there's nothing like the spec. You can download the latest from here: ecma-international.org/publications/files/drafts It's the PDF file starting with "tc39-" (as of this writing, tc39-2009-050.pdf). That says it's a draft, but it was voted through earlier this month.
And see stackoverflow.com/questions/359494/… how to read the spec!
Hehe, the fact that you need a manual to read a spec really says something about the quality of the spec itself :)