From c07a1297d8efae1264d729b3cd2146dbdaab9a11 Mon Sep 17 00:00:00 2001
From: Dennis Ushakov <dennis.ushakov@gmail.com>
Date: Thu, 6 Feb 2014 15:31:00 +0400
Subject: [PATCH] don't add duplicate patterns

---
 .../plugins/relaxNG/model/descriptors/RngNsDescriptor.java      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xml/relaxng/src/org/intellij/plugins/relaxNG/model/descriptors/RngNsDescriptor.java b/xml/relaxng/src/org/intellij/plugins/relaxNG/model/descriptors/RngNsDescriptor.java
index e6689ce9cf7b..2bed77f5299b 100644
--- a/xml/relaxng/src/org/intellij/plugins/relaxNG/model/descriptors/RngNsDescriptor.java
+++ b/xml/relaxng/src/org/intellij/plugins/relaxNG/model/descriptors/RngNsDescriptor.java
@@ -189,7 +189,7 @@ public class RngNsDescriptor implements XmlNSDescriptorEx, Validator {
           dPatterns = new ArrayList<DElementPattern>();
           name2patterns.put(qName, dPatterns);
         }
-        dPatterns.add(pattern);
+        if (!dPatterns.contains(pattern)) dPatterns.add(pattern);
       }
     }