Sounds like a bug to me, at least in documentation. I would say
that it ignores them by accident. I doubt that skipping files is
intended.
The problem appears to be that the 'files' argument to tar() becomes
the 'path' argument to list.files(), and the spec for 'path' is not
a whole lot more ill
E.g. I am seeing:
dir <- file.path(tempdir(), "test-tar")
dir.create(dir)
setwd(dir)
dir.create("foo", showWarnings = FALSE)
file.create("foo/bar.R")
tar("test.tar", files = "foo/bar.R")
dir.create("untarred")
untar("test.tar", exdir = "untarred")
list.files("
