update macOS comment

git-svn-id: https://svn.r-project.org/R/trunk@85680 00db46b3-68df-0310-9c12-caf00c1e9a41

src/library/utils/man/tar.Rd

@@ -1,6 +1,6 @@
 % File src/library/utils/man/tar.Rd
 % Part of the R package, https://www.R-project.org
-% Copyright 2009-2021 R Core Team
+% Copyright 2009-2023 R Core Team
 % Distributed under GPL 2 or later
 
 \name{tar}
@@ -99,16 +99,15 @@ tar(tarfile, files = NULL,
   removed in favour of \command{pax}, and in any case many common
   implementations diverged from the former standard.
 
-  Many \R platforms use a version of GNU \command{tar}, but the behaviour
-  seems to be changed with each version.  macOS >= 10.6, FreeBSD and Windows
-  10 use \command{bsdtar}
-  from the libarchive project (but for macOS a version from 2017 or
-  earlier, 2010 for High Sierra), and commercial Unixes will have their
-  own versions. \command{bsdtar} is available for many other platforms:
-  macOS up to at least 10.9 had GNU \command{tar} as \command{gnutar}
-  and other platforms, e.g.\sspace{}Solaris, have it as \command{gtar}:
-  on a Unix-alike \command{configure} will try \command{gnutar} and
-  \command{gtar} before \code{tar}.
+  Many \R platforms use a version of GNU \command{tar}, but the
+  behaviour seems to be changed with each version.  macOS >= 10.6,
+  FreeBSD and Windows 10 use \command{bsdtar} from the libarchive
+  project (but for macOS often a quite-old version), and commercial
+  Unixes will have their own versions. \command{bsdtar} is available for
+  many other platforms: macOS up to at least 10.9 had GNU \command{tar}
+  as \command{gnutar} and other platforms, e.g.\sspace{}Solaris, have it
+  as \command{gtar}: on a Unix-alike \command{configure} will try
+  \command{gnutar} and \command{gtar} before \code{tar}.
 
   %% Heirloom Toolchest (http://heirloom.sourceforge.net/) is
   %% another implementation available on NetBSD, but probably not the default.