Yum prerelease cleanup policy is inconsistent with RPM naming conventions

According to the documentation the Yum prerelease cleanup policy specifically looks at the “release” component of the RPM name for the prerelease text

The non-case-sensitive “release” property in the RPM header contains one of the following: alpha, beta, rc, pre, prerelease, snapshot

But according to the Yum/RPM naming convention, that text is supposed to go in the “version” component.

I tried this out on my local Nexus3 repository. I created an empty RPM with the text “~beta4” in “version” property and sure enough, the cleanup policy DID NOT find that artifact.

It seems the current Nexus3 cleanup policy violates the RPM naming convention.