const a, b, c, d = 1, 2, 3, 4

do
	close a, b = setmetatable {},__close:=> print "closed"
	const c, d = 123, 'abc'

	close a, b
	const c, d

do
	const a, {b, c}, {d} = f!, f1!

do
	const a, {b, c}, {d} = f!

do
	const [a, b] = [2, 3]

do
	close v = if flag
		func!
	else
		setmetatable {},__close:=>

	close f = with io.open "file.txt"
		\write "Hello"

do
	const a = 1 if true
	close b = (if x then 1) unless false
	const c = (switch x
		when "abc" then 998) if true
	close d =
		:value if a ?? b

do
	close _ = with io.open "file.txt"
		\write "Hello"
	
	close _ = <close>: -> print "second"

	close _ = <close>: -> print "first"

	print "third"

_defers = setmetatable {}, __close: =>
	@[#@]!
	@[#@] = nil

def = (item)->
	_defers[#_defers + 1] = item
	_defers

do
	close _ = def -> print 3
	close _ = def -> print 2
	close _ = def -> print 1