Comment by jules

SubText handles recursion well. It shows the toplevel invocation, and when you click on a recursive call in that invocation, then that recursive call opens next to it. Like this you can expand the call graph as you with.

A demo shows it better than words: http://subtextual.org/demo1.html

And a newer demo, although it does not show the call graph expansion: http://subtextual.org/subtext2.html