From c3d8665851c20414007f04a481c5a542d9d139f2 Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Tue, 3 Jan 2023 17:21:42 +0800
Subject: [PATCH] fix(exit): the TUI should not ui_flush() itself (#21625)

---
 src/nvim/main.c | 4 +++-
 src/nvim/ui.c   | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/nvim/main.c b/src/nvim/main.c
index c20be202e8..b5207f9cf6 100644
--- a/src/nvim/main.c
+++ b/src/nvim/main.c
@@ -627,7 +627,9 @@ void os_exit(int r)
 {
   exiting = true;
 
-  ui_flush();
+  if (!ui_client_channel_id) {
+    ui_flush();
+  }
   ui_call_stop();
   ml_close_all(true);           // remove all memfiles
 
diff --git a/src/nvim/ui.c b/src/nvim/ui.c
index 33c7d0c1fe..4c640693cc 100644
--- a/src/nvim/ui.c
+++ b/src/nvim/ui.c
@@ -506,6 +506,7 @@ handle_T ui_cursor_grid(void)
 
 void ui_flush(void)
 {
+  assert(!ui_client_channel_id);
   if (!ui_active()) {
     return;
   }