lua equiv of __LINE__ and __FILE__?

Question

I really like C's __LINE__ and __FILE__ ... does lua provide something similar? (I find it useful for tracking down printf's ... to know which file and which line the message comes from).

Thanks!

Answer 1

function __FILE__() return debug.getinfo(2,'S').source end
function __LINE__() return debug.getinfo(2, 'l').currentline end

Untested, credit goes here.