Just to close the loop (and prevent this xkcd cartoon from becoming even more true <https://xkcd.com/979/>), the answer to this question was addressed in this post <https://stat.ethz.ch/pipermail/r-devel/2015-March/070784.html> and subsequent.
Avi ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
