From d67a9b437c3545b3a435953dbb529b64934cc767 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Mon, 18 Oct 2010 12:23:01 -0700
Subject: [PATCH] Avoid notice in DirectionDetectorPlugin when dealing with
 empty string.

---
 plugins/DirectionDetector/DirectionDetectorPlugin.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/plugins/DirectionDetector/DirectionDetectorPlugin.php b/plugins/DirectionDetector/DirectionDetectorPlugin.php
index 1473c386fa..4a38f390f1 100644
--- a/plugins/DirectionDetector/DirectionDetectorPlugin.php
+++ b/plugins/DirectionDetector/DirectionDetectorPlugin.php
@@ -81,6 +81,9 @@ class DirectionDetectorPlugin extends Plugin {
      * @return boolean
      */
     public static function startsWithRTLCharacter($str){
+        if (strlen($str) < 1) {
+            return false;
+        }
         if( is_array($cc = self::utf8ToUnicode(mb_substr($str, 0, 1, 'utf-8'))) )
             $cc = $cc[0];
         else
-- 
2.39.5