+ This is a little feature of mine that I used to debug stuff months …

…ago, and I figured it might be helpful to plugin authors as well, so let's do this... You can get a 'debug' view of hooks at templating time if you're an admin and you manually add ";viewhooks" to the URL (or "?viewhooks" if there's no question mark to begin with.) A red box means it's unused, and of course a green box means that at least one plugin is using that hook. Stick your mouse pointer over any box to get a tooltip indicating the hook's name. That's all, folks! (Subs.php)

core/app/Subs.php

@@ -2389,6 +2389,9 @@ function call_hook($hook, $parameters = array(), $plugin_id = '')
 {
 	global $settings;
 
+	if (isset($_GET['viewhooks']) && we::$is_admin)
+		echo '<div style="display: inline-block; background: ', empty($settings['hooks'][$hook]) ? 'red' : 'green', '; border: 1px solid white; border-radius: 2px; width: 8px; height: 8px" title="', westr::safe($hook), '"></div>';
+
 	if (wetem::$hooks && wetem::$hooks->has($hook))
 		wetem::$hooks->render($hook);