Index: DefaultAccessLogFormatterImpl.java
===================================================================
--- DefaultAccessLogFormatterImpl.java	(revision 52756)
+++ DefaultAccessLogFormatterImpl.java	(working copy)
@@ -321,9 +321,11 @@
                     Level.SEVERE,
                     "peaccesslogvalve.missingAccessLogPatternEndDelimiter",
                     pattern);
+                break;
             }
-            String component = pattern.substring(index+1, end);
+            String component = pattern.substring(index+1, end).trim();
 
+
             if (!component.startsWith(ATTRIBUTE_BY_NAME_PREFIX)
                     && !AUTH_USER_NAME.equals(component) 
                     && !CLIENT_DNS.equals(component)