Ticket #23259: hook-function-hook.diff

public_html/wp-includes/plugin.php

@@ -754 +754 @@
         global $wp_filter;
         static $filter_id_count = 0;
 
+  $function = apply_filters( 'hook_function', $function, $tag, $priority );
+
         if ( is_string($function) )
                 return $function;