From 4cd96edd9ca2da49f6267722cf6ef0c8331aefcf Mon Sep 17 00:00:00 2001
From: Saurtron <saurtron@riseup.net>
Date: Wed, 11 Dec 2024 02:36:46 +0100
Subject: [PATCH] Custom xml for windows since mingw doesn't work with the
 fontconfig special strings.

---
 rts/Rendering/Fonts/CFontTexture.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/rts/Rendering/Fonts/CFontTexture.cpp b/rts/Rendering/Fonts/CFontTexture.cpp
index b969389c18..53b0aec9c4 100644
--- a/rts/Rendering/Fonts/CFontTexture.cpp
+++ b/rts/Rendering/Fonts/CFontTexture.cpp
@@ -151,14 +151,17 @@ class FtLibraryHandler {
 
 			#ifdef _WIN32
 			// fontconfig will resolve the special keys here.
-			static constexpr const char* configFmt = R"(<fontconfig><dir>WINDOWSFONTDIR</dir><cachedir>fontcache</cachedir><cachedir>LOCAL_APPDATA_FONTCONFIG_CACHE</cachedir></fontconfig>)";
+			std::array<char, 4096> osFontsDir;
+			ExpandEnvironmentStrings("%WINDIR%\\fonts", osFontsDir.data(), osFontsDir.size()); // expands %HOME% etc.
+			static constexpr const char* configFmt = R"(<fontconfig><dir>%s</dir><cachedir>fontcache</cachedir></fontconfig>)";
+			std::string configFmtVar = fmt::sprintf(configFmt, osFontsDir.data());
 			#else
 			static constexpr const char* configFmt = R"(<fontconfig><cachedir>fontcache</cachedir></fontconfig>)";
 			#endif
 
 			#ifdef _WIN32
 			// Explicitly set the config with xml for windows.
-			res = FcConfigParseAndLoadFromMemory(config, reinterpret_cast<const FcChar8*>(configFmt), FcTrue);
+			res = FcConfigParseAndLoadFromMemory(config, reinterpret_cast<const FcChar8*>(configFmtVar.c_str()), FcTrue);
 			#else
 			// Load system configuration (passing 0 here so fc will use the default os config file if possible).
 			res = FcConfigParseAndLoad(config, 0, true);