util.array: Wrap tostring() output in {} (otherwise empty arrays print as "").

diff --git a/util/array.lua b/util/array.lua
index b78fb98f0685fe939ade0e68ce396f5476906069..2d58e7fb72d623169faa0deeada3dac881154462 100644 (file)
--- a/util/array.lua
+++ b/util/array.lua
@@ -17,7 +17,7 @@ local tostring = tostring;
 local array = {};
 local array_base = {};
 local array_methods = {};
-local array_mt = { __index = array_methods, __tostring = function (array) return array:concat(", "); end };
+local array_mt = { __index = array_methods, __tostring = function (array) return "{"..array:concat(", ").."}"; end };
 
 local function new_array(self, t, _s, _var)
        if type(t) == "function" then -- Assume iterator