Split splits path immediately following the final [Separator],
separating it into a directory and file name component.
If there is no Separator in path, Split returns an empty dir
and file set to path.
The returned values have the property that path = dir+file.
Split splits path immediately following the final [Separator], separating it into a directory and file name component. If there is no Separator in path, Split returns an empty dir and file set to path. The returned values have the property that path = dir+file.