Constraints patch - help?

[askok@...]

I'm repeating the request for help, from people interested 
in getting function parameter, local var, and return value 
constraints to Lua.

The approach I'm taking is a patch, because:
   - I'd like this feature to get _into_ Lua, instead of 
being a kludge add-on
   - performance should be made as good as possible

Current state of the patch is that all parsing is done 
(and works); constraint strings are placed in variable and 
function data structures in seemingly meaningful places.

What remains is ways to enforce the constraints at 
runtime.  A group of people for discussing different 
alternatives would be useful, as bouncing something within 
a sole person's head is never the most creative approach.

We could use this list, but I'm afraid it's bound to get 
into teeny-weeny details pretty soon (= instantly).  Once 
a working, tested concept patch is there, the list can be 
informed.

thanks,   :)
-asko