From aeaf001df79d22c4a616708bdc9fc34438eddd2f Mon Sep 17 00:00:00 2001
From: Damien Elmes <gpg@ankiweb.net>
Date: Sat, 19 Jul 2025 00:04:48 +0700
Subject: [PATCH] Hack back in a fix for lack of ANSI codes on Windows 10

There must be a better way to do this, but someone more familiar
with Win32 internals than I will need to discover it.

https://forums.ankiweb.net/t/anki-25-08-beta/63645/61
---
 Cargo.toml                          |  2 +-
 qt/launcher/src/platform/windows.rs | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/Cargo.toml b/Cargo.toml
index db5753893..2ff29cd1a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -141,7 +141,7 @@ walkdir = "2.5.0"
 which = "8.0.0"
 widestring = "1.1.0"
 winapi = { version = "0.3", features = ["wincon", "winreg"] }
-windows = { version = "0.61.3", features = ["Media_SpeechSynthesis", "Media_Core", "Foundation_Collections", "Storage_Streams", "Win32_System_Console", "Win32_System_Registry", "Win32_Foundation", "Win32_UI_Shell"] }
+windows = { version = "0.61.3", features = ["Media_SpeechSynthesis", "Media_Core", "Foundation_Collections", "Storage_Streams", "Win32_System_Console", "Win32_System_Registry", "Win32_System_SystemInformation", "Win32_Foundation", "Win32_UI_Shell", "Wdk_System_SystemServices"] }
 wiremock = "0.6.3"
 xz2 = "0.1.7"
 zip = { version = "4.1.0", default-features = false, features = ["deflate", "time"] }
diff --git a/qt/launcher/src/platform/windows.rs b/qt/launcher/src/platform/windows.rs
index 3c060a9de..ebdff6261 100644
--- a/qt/launcher/src/platform/windows.rs
+++ b/qt/launcher/src/platform/windows.rs
@@ -8,6 +8,7 @@ use anyhow::Context;
 use anyhow::Result;
 use widestring::u16cstr;
 use windows::core::PCWSTR;
+use windows::Wdk::System::SystemServices::RtlGetVersion;
 use windows::Win32::System::Console::AttachConsole;
 use windows::Win32::System::Console::GetConsoleWindow;
 use windows::Win32::System::Console::ATTACH_PARENT_PROCESS;
@@ -18,8 +19,25 @@ use windows::Win32::System::Registry::HKEY;
 use windows::Win32::System::Registry::HKEY_CURRENT_USER;
 use windows::Win32::System::Registry::KEY_READ;
 use windows::Win32::System::Registry::REG_SZ;
+use windows::Win32::System::SystemInformation::OSVERSIONINFOW;
 use windows::Win32::UI::Shell::SetCurrentProcessExplicitAppUserModelID;
 
+/// Returns true if running on Windows 10 (not Windows 11)
+fn is_windows_10() -> bool {
+    unsafe {
+        let mut info = OSVERSIONINFOW {
+            dwOSVersionInfoSize: std::mem::size_of::<OSVERSIONINFOW>() as u32,
+            ..Default::default()
+        };
+        if RtlGetVersion(&mut info).is_ok() {
+            // Windows 10 has build numbers < 22000, Windows 11 >= 22000
+            info.dwBuildNumber < 22000 && info.dwMajorVersion == 10
+        } else {
+            false
+        }
+    }
+}
+
 pub fn ensure_terminal_shown() -> Result<()> {
     unsafe {
         if !GetConsoleWindow().is_invalid() {
@@ -29,6 +47,14 @@ pub fn ensure_terminal_shown() -> Result<()> {
     }
 
     if std::env::var("ANKI_IMPLICIT_CONSOLE").is_ok() && attach_to_parent_console() {
+        // This black magic triggers Windows to switch to the new
+        // ANSI-supporting console host, which is usually only available
+        // when the app is built with the console subsystem.
+        // Only needed on Windows 10, not Windows 11.
+        if is_windows_10() {
+            let _ = Command::new("cmd").args(["/C", ""]).status();
+        }
+
         // Successfully attached to parent console
         reconnect_stdio_to_console();
         return Ok(());