3. Call graph analyzer

Write a procedure, callgraph, that accepts a string parameter containing a Tcl procedure call, and evaluates that parameter in the caller's scope. Upon return from the evaluation, the procedure should display in some useful form the call graph: an indication of what Tcl commands were invoked by what other Tcl commands in the course of running the procedure.

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Tcl2002 programming contest: solutions to problem 3

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The Great Canadian Tcl/Tk Programming Contest, eh?

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