Lua global variable containing path to current file?

Question

Is there a global variable in Lua that contains the path to the file currently being interpreted? Something like Python\'s __file__ variable?

I ran a qu

Answer 1

In Lua 5.2, when a script is loaded via require, it receives as arguments the module name given to require and the filename that require used to open the script:

$ cat a.lua
require"b"
$ cat b.lua
print("in b",...)
$ lua a.lua
in b    b   ./b.lua

In Lua 5.1, only the module name is passed, not the filename.