Index: public_html/wp-includes/plugin.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- public_html/wp-includes/plugin.php	(revision 23278)
+++ public_html/wp-includes/plugin.php	(revision )
@@ -754,6 +754,8 @@
 	global $wp_filter;
 	static $filter_id_count = 0;
 
+  $function = apply_filters( 'hook_function', $function, $tag, $priority );
+
 	if ( is_string($function) )
 		return $function;