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.
On some Unix builds of R, a leading
~user will expand to
the home directory of
user, but not on Unix versions without
readline installed, nor if R is invoked with
In an interactive session
capabilities("cledit") will report if
readline is available.
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