From 63a19db0dc817d2929d8ef4bf12a15d5e9dbd015 Mon Sep 17 00:00:00 2001
From: Bruce Hill <bitbucket@bruce-hill.com>
Date: Tue, 12 Jun 2018 20:06:33 -0700
Subject: Working version.

---
 nomsu_tree.lua | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'nomsu_tree.lua')

diff --git a/nomsu_tree.lua b/nomsu_tree.lua
index 96e5031..446da20 100644
--- a/nomsu_tree.lua
+++ b/nomsu_tree.lua
@@ -62,6 +62,9 @@ Tree = function(name, methods)
       if type(source) == 'string' then
         source = Source:from_string(source)
       end
+      for i = 1, select('#', ...) do
+        assert(select(i, ...))
+      end
       assert(Source:is_instance(source))
       local inst = {
         source = source,
-- 
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