Index: wp-includes/class.wp-scripts.php
===================================================================
--- wp-includes/class.wp-scripts.php	(revision 18343)
+++ wp-includes/class.wp-scripts.php	(working copy)
@@ -123,9 +123,9 @@
 		$src = esc_url(apply_filters( 'script_loader_src', $src, $handle ));
 
 		if ( $this->do_concat )
-			$this->print_html .= "<script type='text/javascript' src='$src'></script>\n";
+			$this->print_html .= apply_filters( 'script_loader_tag', "<script type='text/javascript' src='$src'></script>\n", $handle );
 		else
-			echo "<script type='text/javascript' src='$src'></script>\n";
+			echo apply_filters( 'script_loader_tag', "<script type='text/javascript' src='$src'></script>\n", $handle );
 
 		return true;
 	}