> > This looks (a) cool and (b) a complete hack that nobody should be > allowed to > > do without messing with sys._getframe(). > > It reminds me a little bit of the dynamic binding in Emacs lisp. As > incredibly useful as that is sometimes, it's a disgusting hack. :) And, if I understand correctly, something from which the Lisp community is moving away--preferring, instead, the notion of "lexical scoping" such as in Scheme.
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