a note for the future

core/extension.class.php

@@ -92,6 +92,9 @@ abstract class SimpleExtension implements Extension {
 	var $theme;
 	var $_child;
 
+	// in PHP5.3, late static bindings can take care of this; __CLASS__
+	// used here will refer to the subclass
+	// http://php.net/manual/en/language.oop5.late-static-bindings.php
 	public function i_am($child) {
 		$this->_child = $child;
 		if(is_null($this->theme)) $this->theme = get_theme_object($child, false);