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Message: [QUOTE="Bryan Richardson, post: 4638579"] Hello all, I'm wondering if a Ruby library exists that makes it possible to map the call hierarchy of a Ruby program. For example, given a command-line program with different options, I'd like to be able to run the program multiple times, each time with different arguments, and map the 'route' the code takes. I'd like to be able to see what methods of what classes are called as the program executed. Does anyone know if anything like this exists? [/QUOTE]