From 3c3529a4ccc43808367cf875e070c0f61b8611ef Mon Sep 17 00:00:00 2001
From: Shish <shish@shishnet.org>
Date: Thu, 20 Jul 2017 23:29:17 +0100
Subject: [PATCH] don't respond to autocomplete requests for blank string

---
 ext/tag_list/main.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/tag_list/main.php b/ext/tag_list/main.php
index c7804e69..8649a18a 100644
--- a/ext/tag_list/main.php
+++ b/ext/tag_list/main.php
@@ -46,7 +46,7 @@ class TagList extends Extension {
 			$this->theme->display_page($page);
 		}
 		else if($event->page_matches("api/internal/tag_list/complete")) {
-			if(!isset($_GET["s"])) return;
+			if(!isset($_GET["s"]) || $_GET["s"] == "" || $_GET["s"] == "_") return;
 
 			//$limit = 0;
 			$cache_key = "autocomplete-" . strtolower($_GET["s"]);