? syntactical sugar request

[Steve Dekorte <steve@...>]

In Lua, if you want to send a message to an object, but only if that 
method exists you can do:

if object.message then
 object:message()
end

The equivalent in NewtonScript is:

object:?message()

I was thinking if lua had a hook for a ? look whose default behavior was 
the same as a "." lookup but could be overridden, this syntax would be 
easy to implement in lua...

Steve