From 34b0e2d7a85d2f12b8f89f681f78b2878578cbf9 Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Tue, 25 Oct 2022 22:59:38 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=B9=E8=BF=9B=E5=A4=9A=E8=AF=AD=E8=A8=80?=
 =?UTF-8?q?=E5=88=A4=E6=96=AD=E6=9C=BA=E5=88=B6?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 library/think/Lang.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/library/think/Lang.php b/library/think/Lang.php
index a50d838d..a7ac042c 100644
--- a/library/think/Lang.php
+++ b/library/think/Lang.php
@@ -211,6 +211,12 @@ class Lang
             }
         }
 
+        if (preg_match('/^([a-z\d\-]+)/i', $langSet, $matches)) {
+            $langSet = strtolower($matches[1]);
+        } else {
+            $langSet = self::$range;
+        }
+
         // 合法的语言
         if (empty(self::$allowLangList) || in_array($langSet, self::$allowLangList)) {
             self::$range = $langSet ?: self::$range;