My goal wasn't to describe it thoroughly, it was to call it out as a means of disabling exhaustiveness checking. Regardless of whether that's really what the es

My goal wasn't to describe it thoroughly, it was to call it out as a means of disabling exhaustiveness checking. Regardless of whether that's really what the essence of '#[non_exhaustive]' actually is, it does disable exhaustiveness checking. It's right in the name. It's an important part of what it does. Basically, we're talking past each other. I called it out for what it does, but you're pointing out why someone would want to use it. That is, "#[non_exhaustive] on enums indicates that the list of variants is incomplete, and it does this by disabling exhaustiveness checking outside of the crate in which it is defined." Although, of course, not even that is precisely correct. Because your match arms are still forced to be technically exhaustive via the compiler requiring a wildcard arm. But the end effect to the user of the enum is that exhaustiveness checking on the variants of the enum is disabled.