1 files changed, 6 insertions, 0 deletions
diff --git a/gnu/xml/xpath/ContainsFunction.java b/gnu/xml/xpath/ContainsFunction.java
index 3910d15ef..fc2f33faf 100644
--- a/gnu/xml/xpath/ContainsFunction.java
+++ b/gnu/xml/xpath/ContainsFunction.java
@@ -38,6 +38,7 @@ exception statement from your version. */
 package gnu.xml.xpath;
 
 import java.util.List;
+import javax.xml.namespace.QName;
 import org.w3c.dom.Node;
 
 /**
@@ -78,6 +79,11 @@ final class ContainsFunction
     return new ContainsFunction(arg1.clone(context), arg2.clone(context));
   }
 
+  public boolean references(QName var)
+  {
+    return (arg1.references(var) || arg2.references(var));
+  }
+
   public String toString()
   {
     return "contains(" + arg1 + "," + arg2 + ")";