JaviSoto/JSSetBreakpointOnMethodForObject — pull request #2 by kastiglione (2013-07-10 19:17:26+00:00)
Title: Use _objc_msgForward for intercepting method invocations

Following up on the tweet last night, here's an unproven proof-of-concept.

I haven't run this code, it's just to illustrate. I was wrong about one thing, getting around using `-invokeUsingIMP:`. You could do it, but using the private API is much easier. It's too bad it's private.