This repository contains utilities around Go's io/fs package:

• UnionFS, which is a copy of the unionFS type implemented in golang.org/x/website/cmd/golangorg/server.go, slightly extended to allow access to the underlying file system of Files and DirEntrys

• NameSpace, a wrapper around UnionFS that provides method Bind, similar to Plan 9's bind command. It has been created to be able to use a functionality like Godoc's vfs.NameSpace, but based on io/fs.

• PrefixFS creates a filesystem by adding a prefix in front of another, already existing FS; it is used by Namespace.