>>>>> "C" == Clemens Hintze <c.hintze / gmx.net> writes:

C> If it is called that way, the block will converted into a Proc
C> instance *and* assigned to the '&' parameter (called '&block' here)!

C> If it is not called that way, the '&' parameter receives 'nil'!!!!

 Yes, I've finally understood (I think :-)), when it see & it will make
a node NODE_BLOCK_PASS, no ?

Guy Decoux