suggestion: __typeof()

[Asko Kauppi <askok@...>]

I'd suggest adding a "__typeof()" metamethod to Lua, similar to  
__tostring() but used by the 'type()' built-in function.

The reason?  It could be used with userdata, to provide more  
information of the entity than just "userdata" does. For example, it  
could provide "enum/SDL_INIT", telling that the entity is an  
enumaration of logical type SDL_INIT.

The main benefit would be better error messages, and better type-wise  
expandability of Lua in general.

Please consider,
-asko