From 14bbc83c7900ed2112b219acd4bf2224b9d078b4 Mon Sep 17 00:00:00 2001
From: Basil Suter <git@nadar.io>
Date: Mon, 20 Mar 2017 13:19:46 +0100
Subject: [PATCH] ensure empty language to direct output

---
 src/Stemm.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Stemm.php b/src/Stemm.php
index 1303a94..f0dc83e 100644
--- a/src/Stemm.php
+++ b/src/Stemm.php
@@ -25,6 +25,10 @@ class Stemm
      */
     public static function stem($word, $language)
     {
+        if (empty($language)) {
+            return $word;
+        }
+        
         foreach (static::$classMap as $stemmer => $languages) {
             if (in_array($language, $languages)) {
                 return $stemmer::stem($word);