Merge pull request #15 from nikeinikei/master

Fix serializing of tables with overloaded indexing / using __index metamethod

Author: rxi

json.lua

@@ -65,7 +65,7 @@ local function encode_table(val, stack)
 
   stack[val] = true
 
-  if val[1] ~= nil or next(val) == nil then
+  if rawget(val, 1) ~= nil or next(val) == nil then
     -- Treat as array -- check keys are valid and it is not sparse
     local n = 0
     for k in pairs(val) do