edebug-step-in
edebug-step-in is an interactive compiled Lisp function in `edebug.el
'.
(edebug-step-in)
Step into the definition of the function or macro about to be called.
This first does `edebug-instrument-callee' to ensure that it is
instrumented. Then it does `edebug-on-entry' and switches to `go' mode.