From a5f1cedf07bb3489f7e3b5254496afbf600d4e65 Mon Sep 17 00:00:00 2001
From: F4nniu <sparkamax@gmail.com>
Date: Mon, 5 Dec 2022 22:00:16 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96=E8=AF=AD=E8=A8=80=E5=88=A4?=
 =?UTF-8?q?=E6=96=AD?=
MIME-Version: 1.0
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---
 library/think/Lang.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/think/Lang.php b/library/think/Lang.php
index a7ac042c..23887a2c 100644
--- a/library/think/Lang.php
+++ b/library/think/Lang.php
@@ -211,7 +211,7 @@ class Lang
             }
         }
 
-        if (preg_match('/^([a-z\d\-]+)/i', $langSet, $matches)) {
+        if (preg_match('/^([a-z0-9\-_]{2,10})$/i', $langSet, $matches)) {
             $langSet = strtolower($matches[1]);
         } else {
             $langSet = self::$range;