From dfda34254c44f9f8aa16ad556a88ec275ec50a16 Mon Sep 17 00:00:00 2001
From: Bruce Hill <bruce@bruce-hill.com>
Date: Wed, 27 Mar 2019 14:37:38 -0700
Subject: [PATCH] More robust scanning

---
 error_handling.lua  | 3 +++
 error_handling.moon | 1 +
 2 files changed, 4 insertions(+)

diff --git a/error_handling.lua b/error_handling.lua
index 6774e55..605a013 100644
--- a/error_handling.lua
+++ b/error_handling.lua
@@ -133,6 +133,9 @@ enhance_error = function(error_message)
             end
             local scan
             scan = function(t, is_lua_id)
+              if not (t) then
+                return 
+              end
               for k, v in pairs(t) do
                 if type(k) == 'string' and type(v) == 'function' then
                   if not (is_lua_id) then
diff --git a/error_handling.moon b/error_handling.moon
index d6a0881..ea126e8 100644
--- a/error_handling.moon
+++ b/error_handling.moon
@@ -106,6 +106,7 @@ enhance_error = (error_message)->
 
             -- Globals and global compile rules:
             scan = (t, is_lua_id)->
+                return unless t
                 for k,v in pairs(t)
                     if type(k) == 'string' and type(v) == 'function'
                         k = k\from_lua_id! unless is_lua_id