From 82a0ea69f94c7ec58269155542b5e9076219f8ca Mon Sep 17 00:00:00 2001
From: Simon Rozman <simon@rozman.si>
Date: Mon, 12 Feb 2024 13:02:06 +0100
Subject: [PATCH] unicode: don't specify MB_PRECOMPOSED for UTF-7&8

MultiByteToWideChar returns ERROR_INVALID_FLAGS on pre Windows 10.

Signed-off-by: Simon Rozman <simon@rozman.si>
---
 include/stdex/unicode.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/stdex/unicode.hpp b/include/stdex/unicode.hpp
index abd63e33f..c92f836cf 100644
--- a/include/stdex/unicode.hpp
+++ b/include/stdex/unicode.hpp
@@ -181,7 +181,7 @@ namespace stdex
 				return;
 
 #ifdef _WIN32
-			constexpr DWORD dwFlagsMBWC = MB_PRECOMPOSED;
+			DWORD dwFlagsMBWC = static_cast<UINT>(m_from_wincp) < CP_UTF7 ? MB_PRECOMPOSED : 0;
 			constexpr DWORD dwFlagsWCMB = 0;
 			constexpr LPCCH lpDefaultChar = NULL;