From 2c52d35ef10900e7f3022732626e7069cf61ecf8 Mon Sep 17 00:00:00 2001
From: berryplus <berryzplus@gmail.com>
Date: Sun, 27 Jan 2019 16:56:23 +0900
Subject: [PATCH] =?UTF-8?q?IsLetDig=E3=81=AE=E5=88=A4=E5=AE=9A=E6=9D=A1?=
 =?UTF-8?q?=E4=BB=B6=E3=82=92=E4=BF=AE=E6=AD=A3?=
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---
 sakura_core/util/string_ex.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sakura_core/util/string_ex.cpp b/sakura_core/util/string_ex.cpp
index a9830ad4b3..c0b75025f4 100644
--- a/sakura_core/util/string_ex.cpp
+++ b/sakura_core/util/string_ex.cpp
@@ -1417,7 +1417,8 @@ inline static bool IsLetDig(
 	_In_ const wchar_t ch
 ) noexcept
 {
-	return ch <= 0xFF && ::isalnum( ch );
+	// コードポイントがASCII範囲、かつ、isalnumがtrueを返す場合にtrue.
+	return ch <= 0x7F && ::isalnum( ch );
 }
 
 /*