Index: lucene/src/java/org/apache/lucene/search/SortField.java
===================================================================
--- lucene/src/java/org/apache/lucene/search/SortField.java	(revision 1138276)
+++ lucene/src/java/org/apache/lucene/search/SortField.java	Wed Jun 22 13:59:37 NZST 2011
@@ -355,7 +355,11 @@
       case CUSTOM:
         buffer.append("<custom:\"").append(field).append("\": ").append(comparatorSource).append('>');
         break;
-
+      
+      case REWRITEABLE:
+        buffer.append("<rewriteable: \"").append(field).append("\">");
+        break;
+
       default:
         buffer.append("<???: \"").append(field).append("\">");
         break;