From 0f341802e1cb164e2fc61ee274d83266e40cff64 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Camilla=20L=C3=B6wy?= <elmindreda@elmindreda.org>
Date: Tue, 28 Jun 2022 22:26:39 +0200
Subject: [PATCH] Win32: Fix right Shift scancode when using CJK IME

Fixes #2050

(cherry picked from commit 6dd526fb1a9c16c3170a0ebd2b5c73e4a2719245)
---
 CONTRIBUTORS.md    | 1 +
 README.md          | 1 +
 src/win32_window.c | 4 ++++
 3 files changed, 6 insertions(+)

diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index dae0b2d9..0c7141b8 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -18,6 +18,7 @@ video tutorials.
  - Nevyn Bengtsson
  - Niklas Bergström
  - Denis Bernard
+ - BiBi
  - Doug Binks
  - blanco
  - Waris Boonyasiriwat
diff --git a/README.md b/README.md
index 92704e4e..4abb16c7 100644
--- a/README.md
+++ b/README.md
@@ -133,6 +133,7 @@ information on what to include when reporting a bug.
    match event scancode (#1993)
  - [Win32] Bugfix: Instance-local operations used executable instance (#469,#1296,#1395)
  - [Win32] Bugfix: The OSMesa library was not unloaded on termination
+ - [Win32] Bugfix: Right shift emitted `GLFW_KEY_UNKNOWN` when using a CJK IME (#2050)
  - [Cocoa] Disabled macOS fullscreen when `GLFW_RESIZABLE` is false
  - [Cocoa] Bugfix: A connected Apple AirPlay would emit a useless error (#1791)
  - [Cocoa] Bugfix: The EGL and OSMesa libraries were not unloaded on termination
diff --git a/src/win32_window.c b/src/win32_window.c
index 7a32bf8c..073ceee9 100644
--- a/src/win32_window.c
+++ b/src/win32_window.c
@@ -756,6 +756,10 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
             if (scancode == 0x146)
                 scancode = 0x45;
 
+            // HACK: CJK IME sets the extended bit for right Shift
+            if (scancode == 0x136)
+                scancode = 0x36;
+
             key = _glfw.win32.keycodes[scancode];
 
             // The Ctrl keys require special handling