lua/test/globals.lua

   1 -- reads luac listings and reports global variable usage
   2 -- lines where a global is written to are marked with "*"
   3 -- typical usage: luac -p -l file.lua | lua globals.lua | sort | lua table.lua
   4
   5 while 1 do
   6  local s=io.read()
   7  if s==nil then break end
   8  local ok,_,l,op,g=string.find(s,"%[%-?(%d*)%]%s*([GS])ETGLOBAL.-;%s+(.*)$")
   9  if ok then
  10   if op=="S" then op="*" else op="" end
  11   io.write(g,"\t",l,op,"\n")
  12  end
  13 end