Index: error.cs
===================================================================
--- error.cs    (.../vendor/trac/current/templates/error.cs)    (revision 203)
+++ error.cs    (.../trunk/vendor_src/trac/templates/error.cs)  (revision 203)
@@ -8,6 +8,34 @@
   <h1><?cs var:error.title ?></h1>
   <p class="message"><?cs var:error.message ?></p>

+ <?cs
+ def:dump(item) ?><?cs
+  var:text_html(item) ?><?cs
+  if:subcount(item) > 0 ?>
+   <table border="1" cellspacing="0" cellpadding="3" class="dump">
+   <thead>
+    <tr>
+     <th colspan="2"><?cs var:name(item) ?></th>
+    </tr>
+   </thead>
+   <tbody>
+    <?cs each:child = item ?>
+     <tr>
+      <td class="label"><?cs var:name(child) ?></td>
+      <td><?cs call:dump(child) ?></td>
+     </tr>
+    <?cs /each ?>
+   </tbody>
+   </table><?cs
+  /if ?><?cs
+ /def ?>
+
+ <style type="text/css">
+  .dump th { font-weight: bold; text-align: left; background-color: #ccc; color: #666; }
+  .dump .label { vertical-align: top; font-weight: bold; text-align: right; }
+ </style>
+ <?cs call:dump(args) ?>
+
  <?cs elif error.type == "internal" ?>
   <h1>Oops&hellip;</h1>
   <div class="message">