ES 5, ES 5 Strict reserved words

John Lenz concavelenz at
Mon Mar 7 10:32:43 PST 2011

In looking over the spec last weekend, I was surprised to see that some
reserved words were removed (when compared to ES3) for non-strict and then
readded for strict.  I'm confused why this was done.  Doesn't this simply
introduce an unnecessary speed bump for moving code to strict?
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