I haven't explored Clojure. If it allows one to customize the means in which errors are signaled (read: force the language to not immediately throw a Java excep

I haven't explored Clojure. If it allows one to customize the means in which errors are signaled (read: force the language to not immediately throw a Java exception on an error, and instead execute some code), then one should be able to implement both signaling and a debugger. It might not be easy to tell Clojure or the JVM to not be trigger happy with throwing exceptions and therefore destroying the stack. Perhaps one will find a way through!