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Just call\n\nat the beginning your app, e.g. main function, or set the tracers\nprogrammatically (before flag.Parse if you are using that):\n\nNote that since Catch's default mode is to recover from panics, it's a good\npractice still print their stack trace. The panic tracer's default values is\nos.Stderr. The default error tracer is nil.\n\nNote that both panic and error traces are optimized by err2 package. That means\nthat the head of the stack trace isn't the panic function, but an actual line\nthat caused it. It works for all three categories:\n\nThe last two types are handled as panics in the error handling functions given\nto Handle and Catch.\n\nSame err2 capablities support automatic logging like the Catch and\n[try.Result.Logf] functions. To be able to tune up how logging behaves we offer a\ntracer API:\n\nThe err2 package supports Go's flags. 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