Short answer: I don’t know. That sounds like a good idea, but how would that access local variables in the caller (to inspect state)?

I remember the Lua C API exposes a lot of information, but I didn’t think it was accessible from scripts. Of course, it was a long time ago and I could have easily missed something at the time. Happy to be corrected!

Edit: you might also run into difficulties trying to redefine non-global functions to add the call to “repl”.