Expand a path name, for example by replacing a leading tilde by the user's home directory (if defined on that platform).
character vector containing one or more path names.
A character vector of possibly expanded path names: where the home directory is unknown or none is specified the path is returned unchanged.
(These details are for Windows: the details differ on Unix.)
The definition of the ‘home’ directory is in the
Q2.14: it is taken from the
R_USER environment variable when
path.expand is first called in a session.