diff -r bdbb49cf6f1b -r e6b14d33ac55 includes/wikiformat.php
--- a/includes/wikiformat.php	Sat Jul 11 20:25:50 2009 -0400
+++ b/includes/wikiformat.php	Sat Jul 11 20:28:03 2009 -0400
@@ -310,6 +310,20 @@
   }
   
   /**
+   * Make a rule exclusive (the only one called)
+   * @param string stage
+   * @return null
+   */
+  
+  public function exclusive_rule($rule)
+  {
+    if ( is_string($rule) )
+      $this->rules = array($rule);
+    
+    return null;
+  }
+  
+  /**
    * Generate a token
    * @param int Token index
    * @return string