--- Source: https://web.archive.org/web/20131225070434/http://snippets.luacode.org/snippets/Deep_Comparison_of_Two_Values_3

function CompareTable(t1,t2,ignore_mt)
	local ty1 = type(t1)
	local ty2 = type(t2)
	
	if ty1 ~= ty2 then return false end
	
	--- Non-table types can be directly compared
	if ty1 ~= 'table' and ty2 ~= 'table' then return t1 == t2 end
	
	--- As well as tables which have the metamethod __eq
	local mt = getmetatable(t1)
	
	if not ignore_mt and mt and mt.__eq then return t1 == t2 end
	
	for k1,v1 in pairs(t1) do
		local v2 = t2[k1]
		if v2 == nil or not CompareTable(v1,v2) then return false end
	end
	
	for k2,v2 in pairs(t2) do
		local v1 = t1[k2]
		
		if v1 == nil or not CompareTable(v1,v2) then return false end
	end
	
	return true
end

