From f7cf84bd56b47728e4674f316d274b3d82a1cfb3 Mon Sep 17 00:00:00 2001
From: 66maer <505670805@qq.com>
Date: Thu, 8 Sep 2022 05:33:31 +0800
Subject: [PATCH] Fix std::isblank assertion error in Visual Studio Chinese
 Debug (#365)

---
 include/cxxopts.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/cxxopts.hpp b/include/cxxopts.hpp
index 76dcc1a..ee02c57 100644
--- a/include/cxxopts.hpp
+++ b/include/cxxopts.hpp
@@ -2090,12 +2090,12 @@ format_description
   {
     appendNewLine = false;
 
-    if (std::isblank(*previous))
+    if (std::isblank(*previous, std::locale::classic()))
     {
       lastSpace = current;
     }
 
-    if (!std::isblank(*current))
+    if (!std::isblank(*current, std::locale::classic()))
     {
       onlyWhiteSpace = false;
     }