diff -r 1bc7e849a264 -r 91127e62f38f plugins/admin/PageGroups.php
--- a/plugins/admin/PageGroups.php	Sun Oct 07 17:22:25 2007 -0400
+++ b/plugins/admin/PageGroups.php	Tue Oct 09 16:14:55 2007 -0400
@@ -602,6 +602,23 @@
                   echo '<div class="info-box">The affecting tag was updated.</div>';
               }
             }
+            else if ( $_POST['pg_type'] == PAGE_GRP_REGEX )
+            {
+              $target = $_POST['pg_target'];
+              if ( empty($target) )
+              {
+                echo '<div class="error-box">Please enter an expression to match against..</div>';
+              }
+              else
+              {
+                $target = $db->escape($target);
+                $q = $db->sql_query('UPDATE '.table_prefix.'page_groups SET pg_target=\'' . $target . '\' WHERE pg_id=' . $edit_id . ';');
+                if ( !$q )
+                  $db->_die();
+                else
+                  echo '<div class="info-box">The expression to match against was updated.</div>';
+              }
+            }
             else if ( $_POST['pg_type'] == PAGE_GRP_CATLINK )
             {
               $target = $_POST['pg_target'];
@@ -860,6 +877,22 @@
                   </td>
                 </tr>';
           break;
+        case PAGE_GRP_REGEX:
+          echo '<tr>
+                  <td class="row2">
+                    Regular expression to use:<br />
+                    <small>Be sure to include the starting and ending delimiters and any flags you might need.<br />
+                           These pages might help: <a href="http://us.php.net/manual/en/reference.pcre.pattern.modifiers.php">Pattern modifiers</a> &bull;
+                           <a href="http://us.php.net/manual/en/reference.pcre.pattern.syntax.php">Pattern syntax</a><br />
+                           Examples: <tt>/^(Special|Admin):/i</tt> &bull; <tt>/^Image:([0-9]+)$/</tt><br />
+                           Developers, remember that this will be matched against the full page identifier string. This means that <tt>/^About_Enano$/</tt>
+                           will NOT match the page Special:About_Enano.</small>
+                  </td>
+                  <td class="row1">
+                    <input type="text" name="pg_target" value="' . htmlspecialchars($row['pg_target']) . '" size="30" />
+                  </td>
+                </tr>';
+          break;
         case PAGE_GRP_CATLINK:
           
           // Build category list