Re: iterating and calling functions in lua tables

["Li Hui" <xylophone21@...>]

Hi all:

I read the source code of cgilua-5.1.2 this days.And I found this
function below:

function include (filename, env)
	-- read the whole contents of the file
	local fh = assert (open (filename))
	local src = fh:read("*a")
	fh:close()
	-- translates the file into a function
	local prog = compile (src, '@'..filename) -- return a function
	local _env
	if env then
		_env = getfenv (prog)    --why call use getfenv here?
		setfenv (prog, env)
	end
	prog ()
end

compile will return a function .
My question is why here use "_env = getfenv (prog)" to get the prog
function`s environment,but never usr it?
3ks

-- 
lihui