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