Hi,

It was discussed in the past but as far as I can tell, there were no
decision made, about the constant to specify the Ruby implementation.

Now that Rubinius and JRuby define RUBY_ENGINE, and RubyGems also uses
RUBY_ENGINE, maybe it's a good time to revisit the issue?
It would be really nice if MRI would have that constant defined as
well (and maybe to put this change into upcoming 1.8.6 and 1.8.7
maintenance releases)?

Opinions?

Thanks,
  --Vladimir