From 06dca387861df5c5f2f9a353ec87b938f8fe6fc2 Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Mon, 11 Jul 2016 00:09:27 +0200
Subject: [PATCH] Ignore empty username matches

---
 .../system/html/input/node/HtmlInputNodeTextParser.class.php  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/wcfsetup/install/files/lib/system/html/input/node/HtmlInputNodeTextParser.class.php b/wcfsetup/install/files/lib/system/html/input/node/HtmlInputNodeTextParser.class.php
index ebdf26e868..3052c16d24 100644
--- a/wcfsetup/install/files/lib/system/html/input/node/HtmlInputNodeTextParser.class.php
+++ b/wcfsetup/install/files/lib/system/html/input/node/HtmlInputNodeTextParser.class.php
@@ -186,6 +186,10 @@ class HtmlInputNodeTextParser {
 			// $i = 1 to skip the full match
 			for ($i = 1, $length = count($matches); $i < $length; $i++) {
 				for ($j = 0, $innerLength = count($matches[$i]); $j < $innerLength; $j++) {
+					if ($matches[$i][$j] === '') {
+						continue;
+					}
+					
 					$username = $this->getUsername($matches[$i][$j]);
 					if (!isset($usernames[$username])) {
 						$usernames[$username] = $username;
-- 
2.20.1