fortune() in .Rprofile conflicts with R CMD INSTALL

Kurt Hornik writes:

if test -z "${lib}"; then
  lib=`echo "cat(.libPaths()[1])" | \
    R_DEFAULT_PACKAGES=NULL "${R_EXE}" --no-save --slave`
  message "Installing to library '$lib'"

so we need to find a way to "just get" the result of cat(.libPaths()[1])
into $lib as intended.

One idea might be ensuring that this gets into the last line on its own,
and then taking $lib as the last line of what we got ...

I think I found (and committed) a solution for this.