From 9b19d25b29fba9cb511dd7246f8b24413cc7c8eb Mon Sep 17 00:00:00 2001
From: Uwe Steinmann <steinm@debian.org>
Date: Thu, 8 Apr 2021 10:56:27 +0200
Subject: [PATCH] check if keywords are actually set

---
 op/op.AddDocument.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/op/op.AddDocument.php b/op/op.AddDocument.php
index 1061d7c1b..fa6af0400 100644
--- a/op/op.AddDocument.php
+++ b/op/op.AddDocument.php
@@ -79,7 +79,7 @@ $version_comment = !empty($_POST["version_comment"]) ? trim($_POST["version_comm
 if($version_comment == "" && isset($_POST["use_comment"]))
 	$version_comment = $comment;
 
-$keywords = trim($_POST["keywords"]);
+$keywords = isset($_POST["keywords"]) ? trim($_POST["keywords"]) : '';
 $categories = isset($_POST["categories"]) ? $_POST["categories"] : null;
 $cats = array();
 if($categories) {