Would be nice if we have option to get function name

[renathoaz]

Would be nice if the hook has the option do display function name, just something like that could help:

        pc := make([]uintptr, 15)
	n := runtime.Callers(8, pc)
	frames := runtime.CallersFrames(pc[:n])
	frame, _ := frames.Next()
	return fmt.Sprintf("%s:%d - %s", frame.File, frame.Line, frame.Function)

[onrik]

I implemented function name logging. You can customize output:

hook := filename.NewHook()
hook.Formatter = func(file, function string, line int) string {
  fmt.Sprintf("%s:%d - %s", file, line, function)
}

[renathoaz]

Excellent! Thank you!

[tzvatot]

func(file, function string, line int) string {
  fmt.Sprintf("%s:%d - %s", file, line, function)
}

missing "return" for fmt.Sprintf...