[Lua] apiiter - list ALL (sub)fields and (sub)methods of _G

--This script will iterate all lua fiels and methods loaded in global table
--example with ComputerCraft: http://pastebin.com/zU5001tQ
c=io.open("apilist","w")

function ins(at,bk)
  for k,v in pairs(at) do
    if not (k=="_G") then
      print(bk..k)
      c.writeLine(bk..k)
      if type(v)=="table"  then
        ins(v,bk..k..".")
      end
    end
  end
end

ins(_G,"")
c.close()