From fa9ba02353d79632983b9fe24da851894877e342 Mon Sep 17 00:00:00 2001
From: Terry Jan Reedy <tjreedy@udel.edu>
Date: Tue, 19 Dec 2023 00:26:11 -0500
Subject: [PATCH] gh-113269: IDLE - Fix test_editor hang (macOS) (#113271)

Hangs on installed 3.13.0a2 on macOS Catalina.
Behavior on installed 3.12.1 and 3.11.7 is unknown.
---
 Lib/idlelib/News3.txt                                           | 2 ++
 Lib/idlelib/idle_test/test_editor.py                            | 2 +-
 .../next/IDLE/2023-12-19-00-03-12.gh-issue-113269.lrU-IC.rst    | 1 +
 3 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 Misc/NEWS.d/next/IDLE/2023-12-19-00-03-12.gh-issue-113269.lrU-IC.rst

diff --git a/Lib/idlelib/News3.txt b/Lib/idlelib/News3.txt
index 4fba4165fddab5..308865d968814c 100644
--- a/Lib/idlelib/News3.txt
+++ b/Lib/idlelib/News3.txt
@@ -4,6 +4,8 @@ Released on 2024-10-xx
 =========================
 
 
+gh-113269: Fix test_editor hang on macOS Catalina.
+
 gh-112939: Fix processing unsaved files when quitting IDLE on macOS.
 Patch by Ronald Oussoren and Christopher Chavez.
 
diff --git a/Lib/idlelib/idle_test/test_editor.py b/Lib/idlelib/idle_test/test_editor.py
index 9296a6d235fbbe..0dfe2f3c58befa 100644
--- a/Lib/idlelib/idle_test/test_editor.py
+++ b/Lib/idlelib/idle_test/test_editor.py
@@ -95,7 +95,7 @@ def test_tabwidth_8(self):
 def insert(text, string):
     text.delete('1.0', 'end')
     text.insert('end', string)
-    text.update()  # Force update for colorizer to finish.
+    text.update_idletasks()  # Force update for colorizer to finish.
 
 
 class IndentAndNewlineTest(unittest.TestCase):
diff --git a/Misc/NEWS.d/next/IDLE/2023-12-19-00-03-12.gh-issue-113269.lrU-IC.rst b/Misc/NEWS.d/next/IDLE/2023-12-19-00-03-12.gh-issue-113269.lrU-IC.rst
new file mode 100644
index 00000000000000..72e75b7910e359
--- /dev/null
+++ b/Misc/NEWS.d/next/IDLE/2023-12-19-00-03-12.gh-issue-113269.lrU-IC.rst
@@ -0,0 +1 @@
+Fix test_editor hang on macOS Catalina.