with ruby18, ruby19, and ruby20 installed, "eselect ruby list" returns ruby20 as "[3] ruby20 (with rubygems)" yet "eselect ruby set 3" returns "Successfully switched to profile: ruby19". ruby20 can be selected with "eselect ruby set 4". This only seems to happen when switching from ruby19 to ruby20 not when switching from ruby18 to ruby20.