From 0c1b4376d36d9495b1e025a8fb4d43496c8c1b53 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=BCrg=20Lehni?= <juerg@scratchdisk.com>
Date: Wed, 27 Jan 2016 21:17:29 +0100
Subject: [PATCH] Core: Fix issue with RegExp detection if object is from
 another context.

---
 src/item/Item.js | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/item/Item.js b/src/item/Item.js
index adeced69..3b146b69 100644
--- a/src/item/Item.js
+++ b/src/item/Item.js
@@ -1916,12 +1916,14 @@ new function() { // // Scope to inject various item event handlers
                 // Compare further with the _class property value instead.
                 value = this._class;
             }
-            if (compare instanceof RegExp) {
-                return compare.test(value);
-            } else if (typeof compare === 'function') {
+            if (typeof compare === 'function') {
                 return !!compare(value);
-            } else if (Base.isPlainObject(compare)) {
-                return matchObject(compare, value);
+            } else if (compare) {
+                if (compare.test) { // RegExp-ish
+                    return compare.test(value);
+                } else if (Base.isPlainObject(compare)) {
+                    return matchObject(compare, value);
+                }
             }
             return Base.equals(value, compare);
         }