From 4fa9a3c5d83a1024678596a586afe5df14a345b5 Mon Sep 17 00:00:00 2001
From: ArthurHoaro <arthur@hoa.ro>
Date: Thu, 16 Aug 2018 17:25:47 +0200
Subject: Fix a JS bug preventing AJAX tag deletion to work

Fixes #1214
---
 index.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'index.php')

diff --git a/index.php b/index.php
index 8f6ee50a..eb717536 100644
--- a/index.php
+++ b/index.php
@@ -1084,7 +1084,8 @@ function renderPage($conf, $pluginManager, $LINKSDB, $history, $sessionManager,
             die(t('Wrong token.'));
         }
 
-        $alteredLinks = $LINKSDB->renameTag(escape($_POST['fromtag']), escape($_POST['totag']));
+        $toTag = isset($_POST['totag']) ? escape($_POST['totag']) : null;
+        $alteredLinks = $LINKSDB->renameTag(escape($_POST['fromtag']), $toTag);
         $LINKSDB->save($conf->get('resource.page_cache'));
         foreach ($alteredLinks as $link) {
             $history->updateLink($link);
-- 
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