We seem to agree - at least on small things 8-)

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@269844 13f79535-47bb-0310-9956-ffa450edef68

docs/ant2/features.html

@@ -163,6 +163,9 @@
       not guarantee this behavior but will allow build file writers to
       specify the order explicitly.</li>
 
+      <li>Dereferencing a non existent property a via ${a} will result
+      in a build failure.</li>
+
     </ul>
 
     <h2>Support Integration of Ant Into Other Tools</h2>