(I was offline for a few days, but want to reply anyway.) My partner and I were just discussing this the other day: write a high-level debugger that, given a pi

(I was offline for a few days, but want to reply anyway.) My partner and I were just discussing this the other day: write a high-level debugger that, given a piece of object-code that went wrong, points to the high-level code that generated it. There are a lot of interesting tools one could build in this space. For example, a Slime-style REPL that provides Firebug-like access to JS in the browser, but via Parenscript forms, would be a really nice addition. As for your debugger suggestion, I would love to have such a thing. But first, I'd settle for having such a thing in the Lisp environment alone - it's my biggest pet peeve about CL that the debugger situation is so bad.