Thanks for that great puzzle! Took me a few minutes to figure out what was going on with it. Indeed very clever--and amusing. I concur Tcl is often awesome and

Thanks for that great puzzle! Took me a few minutes to figure out what was going on with it. Indeed very clever--and amusing. I concur Tcl is often awesome and at times also terribly irksome. I suppose the same could be said of Lisps in general. (Like many others I'd say Tcl belongs in the family of Lisp and its direct descendants.)