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Hello everyone,
can anyone explain me what's happening running this simple lua script:


lua: attempt to yield across metamethod/C-call boundary
stack traceback:
	[C]: in function 'yield'
	/Users/veleno/Downloads/metaerror.lua:1: in main chunk
	[C]: ?

I've searched on google for that error, but many references belong to the interaction between C++ and Lua code. Here it's only Lua.
I agree that that kind of code is not really very useful..but I'd like to understand it.