littler: revision for r
littler: revision for r

Signed-off-by: Bob W. Hogg <rwhogg@linux.com>

Closes #6011.

Signed-off-by: Jonathan Chang <0bd51b8a224feeddb634965eebae512adcd49a8d@gmail.com>

andrewjpage/homebrew-science,pditommaso/homebrew-science,heuermh/homebrew-science