Interesting article and thanks for chiming back in. I also discovered and enjoyed the metaprogramming features of ruby perhaps 5+ years ago. As I've been learning it recently, can I ask if you have any particular take on lua? To me, it feels a bit paired back, more purist, smaller core/libraries than ruby, but also drawing from the same tradition - ie. lua's tables/functions equate well to lisp's lists/S-expressions (though practically largely equivalent and including metaprogramming support) - despite not being directly derived from a lisp.