From 7099c9d5136878b6af643cf83ec1382ae99bd7d2 Mon Sep 17 00:00:00 2001
From: Koji Tanaka <tenkoma@gmail.com>
Date: Wed, 17 Jan 2018 23:02:13 +0900
Subject: [PATCH] Fix Multibyte::strtolower()

---
 lib/Cake/I18n/Multibyte.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Cake/I18n/Multibyte.php b/lib/Cake/I18n/Multibyte.php
index 797044a85f1..c11082ac0ba 100644
--- a/lib/Cake/I18n/Multibyte.php
+++ b/lib/Cake/I18n/Multibyte.php
@@ -554,7 +554,7 @@ public static function strtolower($string) {
 
 				if (!empty($keys)) {
 					foreach ($keys as $key => $value) {
-						if ($keys[$key]['upper'] == $char && count($keys[$key]['lower'][0]) === 1) {
+						if ($keys[$key]['upper'] == $char && count($keys[$key]['lower']) > 0) {
 							$lowerCase[] = $keys[$key]['lower'][0];
 							$matched = true;
 							break 1;