SamWhited  filed an orphan request for xml2rfc :
People flagged that the package doesn't list its dependencies on 2019-12-23. The package is also out of date with no response from the owner.
 https://aur.archlinux.org/account/SamWhited/  https://aur.archlinux.org/pkgbase/xml2rfc/
Request #19034 has been rejected by polyzen :
Package has been updated.