1 files changed, 19 insertions, 1 deletions
diff --git a/util.lua b/util.lua
index 2b84d85..5d31a2a 100644
--- a/util.lua
+++ b/util.lua
@@ -53,12 +53,30 @@ function filter(a, pred)
     return filtered
 end
 
-function fmt(x)
+function fmt(x, depth)
+    depth = depth or 1
+    if (depth > 4) then return "STACK_OVERFLOW" end
+
+    if x == nil then
+        return "nil"
+    end
+
     t = type(x)
     if t == "number" then
         return "" .. x
     elseif t == "string" then
         return x
+    elseif t == "table" then
+        s = "{"
+        i = 0
+        for k, v in pairs(x) do
+            if i ~= 0 then s = s .. ", " end
+            i += 1
+            s = s .. fmt(k, depth + 1) .. "=" .. fmt(v, depth + 1)
+        end
+        return s .. "}"
+    elseif t == "function" then
+        return "F()"
     elseif t == "boolean" and x then
         return "true"
     elseif t == "boolean" and not x then