Even if it did (and it doesn't, I checked), you're probably still better off doing it explicitly since it's easier to audit, less likely to differ across implem

Even if it did (and it doesn't, I checked), you're probably still better off doing it explicitly since it's easier to audit, less likely to differ across implementations, and less error prone (e.g. swap the order of the comparison and you're back to plain old String#==).