Hello Laurent,

On Sun, Dec 2, 2012 at 3:40 PM, Laurent Sansonetti
<laurent.sansonetti / gmail.com> wrote:
> changed at least a couple times. I was wondering if the core team
> (Matz?) has been working on a readable spec that could be shared with
> language implementors?

There is a wiki page:
http://bugs.ruby-lang.org/projects/ruby-trunk/wiki/RefinementsSpec