title: Lua global variable containing path to current file?
body: <p>Is there a global variable in Lua that contains the path to the file currently being interpreted? Something like Python's <code>__file__</code> variable?</p>
  
  <p>I ran a quick <code>for k, v in pairs(_G) do print(k) end</code> in the interpreter to see if I could find anything. Only the following variables were listed?</p>
  
  <p><code>string xpcall package tostring print os unpack require getfenv setmetatable next assert tonumber io rawequal collectgarbage getmetatable module rawset math debug pcall table newproxy type coroutine _G select gcinfo pairs rawget loadstring ipairs _VERSION dofile setfenv load error loadfile</code></p>
  
  <p>Any suggestions on how to get the path the file currently being executed?</p>