From b2d0c35fc2ad091d79461157a46a1ff963b9574b Mon Sep 17 00:00:00 2001
From: pagedown <pg.dn@outlook.com>
Date: Sun, 23 Jan 2022 22:22:24 +0800
Subject: [PATCH] Clear the pre-edit text only when inserting non-control
 characters

Maintains the pre-edit input state after pressing the modifier key
combination or function key while using the IME.
---
 glfw/cocoa_window.m | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/glfw/cocoa_window.m b/glfw/cocoa_window.m
index 5ec9434c1..a2f79e809 100644
--- a/glfw/cocoa_window.m
+++ b/glfw/cocoa_window.m
@@ -1461,7 +1461,7 @@ void _glfwPlatformUpdateIMEState(_GLFWwindow *w, const GLFWIMEUpdateEvent *ev) {
 {
     const char *utf8 = polymorphic_string_as_utf8(string);
     debug_key("\n\tinsertText: %s replacementRange: (%lu, %lu)\n", utf8, replacementRange.location, replacementRange.length);
-    if ([self hasMarkedText]) {
+    if ([self hasMarkedText] && !is_ascii_control_char(utf8[0])) {
         [self unmarkText];
         marked_text_cleared_by_insert = true;
         if (!in_key_handler) {