racted path.

&nbsp; &nbsp;Postconditions: For the returned path, rp, rp.is_relative() ==
(p.root_name() == b.root_name()).

[Notes: This function simplifies paths by omitting context. &nbsp;It is
particularly useful for serializing paths such that it can be usefully
moved between hosts where the context may be different, such as inside
source control trees. &nbsp;It can also be helpful for display to users,
such as in shells where paths are often shown relative to $HOME.

In the presence of symlinks, the r