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> Why is it that COM objects are not gc'ed (Released) when Lua exits?

Why do I need to call collectgarbage() for the Excel instance to be closed?  I have tried using weak tables and control-z followed by control-c.  I have to call collectgarbage() before the Lua interpreter terminates.  Does the garbage collector run when the process terminates?

Lua 5.1.4  Copyright (C) 1994-2008, PUC-Rio
> require"luacom"
> e=luacom.GetObject("Excel.Application")
> e=nil
> collectgarbage()

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