Rael has some nice things to say here:
http://www.oreillynet.com/pub/wlg/6782
"The web development world is about to enjoy one of those
chocolate-and-peanut-butter moments, the convergence of two
individually flavorful technologies to form a scrumptious new taste
sensation."
···
--
thanks,
-pate
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ParseTree is a little brown stinky ferret that digs down a hole and
violently rips the AST away from the warm bosom of ruby. In other
words, we cheat, they don't.