>   As I recall, you mention 4
> different techniques for control message sending.  Of the 4 
> approaches, one
> approach was method wrappers and another approach was a vm change to
> intercept the lookup.  I took the latter approach, while Nathanael's 
> Traits
> work takes the former approach, I believe.

By the way Traits do not need message passing control. They are static 
composition
with a clever and simple semantics. So some simple optimization makes 
them work well.
  No magic/MOP/Mirror needed.


Prof. Dr. Stéphane DUCASSE (ducasse at iam.unibe.ch) 
http://www.iam.unibe.ch/~ducasse/
  "if you knew today was your last day on earth, what would you do
  different? ... especially if, by doing something different, today
  might not be your last day on earth" Calvin&Hobbes