In Lua, how can you print the name of the current function, like the C99 __func__ identifier?

Question

Something like this:

function foo()
    print( __func__ )
   ...
end

How can it be done?

Answer 1

Functions don't necessarily have them. It's perfectly legal in Lua to create anonymous functions with no name- and call it, without assigning it one.

(function()
    print("in anonymous function!")
end)()

Is perfectly valid Lua. What name do you want to give that function?