Several aspects of the stepper's behavior depend on the language level that the user is in. Historically, the division between graphical and non-graphical apps has meant that it's simpler for the stepper to make up a fake language level, rather than get a "real" one for testing. However, the world looks different now. How difficult would it be for a racket app to get a language-level% corresponding to a given module path, for use in testing? This would also bring the testing substantially closer to the implementation.
John
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