You might have a look at Consize, a concatenative language I implemented in Clojure in 140 LOC. Consize is very much inspired by Factor, however Consize is a functional language like Joy or Cat is.
It is extensively documented in German — I plan to add some documentation in English as well. But you might enjoy reading the source code anyhow ;-) After reading consize.clj, I recommend to continue with prelude-plain.txt.
BTW: Adding object-orientation (i.e. polymorphism via generic words & multiple inheritance much like Clojure does) is possible in about 30 LOC.
http://code.google.com/p/consize/
It is extensively documented in German — I plan to add some documentation in English as well. But you might enjoy reading the source code anyhow ;-) After reading consize.clj, I recommend to continue with prelude-plain.txt.
BTW: Adding object-orientation (i.e. polymorphism via generic words & multiple inheritance much like Clojure does) is possible in about 30 LOC.
Dominikus