Robert Dober wrote:

> This is a very valuable and helpful thing, but you still got lots of
> work to do for making these tests pass if you are a closure maniac
> like me :(.

in theory, if it hurts, do it more often. If I wrote all those tests and code 
_after_ setting up the Rakefile to hammer several Ruby versions, then I simply 
don't notice the overhead. If something breaks I fix it or revert and try again.

You seem to think of adding the Ruby versions last...