no, those run on both 1.9 and 2.0 and work fine with the ruby-1.9 bug -- they don't run on 1.8 because its strings don't support encodings...

if that's confusing we could use ruby_gt_18_only instead...  thought gte was clear for greater-than-equal, and confuses me more the other way...  ruby_gte_19_only and ruby_19_only both apply to ruby 1.9 which makes sense to my brain...