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It was thus said that the Great Luiz Henrique de Figueiredo once stated:
> > > co = coroutine.create(function() print"test" end)
> > > ...
> > > Can we get a thread metatable?
> > 
> > debug.setmetatable(co,{__len=function(thread) return "abc" end})
> > print(#co) --> abc
> 
> I think the OP wants
> 	debug.setmetatable(co,{__index=coroutine})
> so that he can say co:resume().

  Or

	debug.setmetatable(
		co,
		{ 
		  __call = function(co,...)
		    return coroutine.resume(co,...)
		  end
		}
	)

so that we can say

	co()

  -spc