On 16 Oct 1998 10:59:11 +0200, you said: For languages that are fairly statically bound (C, for instance), it suffices to do perform a recursive 'makedepend' type operation and seeing which functions call which. You *do* have to worry a bit about function calls through pointers, except that such beasts usually require special set-up (such as call to DLL code, etc) that can in principle be programatically detected. Yes, I know you can't find the initialization of a function pointer if it's done via an alias through another name, but people who write code that depends on aliasing screws Deserve To Lose. ;) However, the dynamic on-the-fly nature of Lisp code makes the problem, I believe, NP-complete. Let's face it, in the context of the previous paragraph, (add-hooks) is an aliasing screw. ;) Of course, it could just be *my* brain that's wedged like a Turing Machine simulating itself... ;) -- Valdis Kletnieks Computer Systems Senior Engineer Virginia Tech