From 0b15d9c0d2d30c7d3f17ebb90dd822ef32f977cc Mon Sep 17 00:00:00 2001
From: Andy Fiddaman <andy@omnios.org>
Date: Thu, 23 Jan 2025 17:30:08 +0000
Subject: [PATCH] gh-128330: Terminal control characters should be restored on
 repl exit (#128331)

---
 Lib/_pyrepl/fancy_termios.py                                  | 4 +++-
 .../2024-12-29-15-09-21.gh-issue-128330.IaYL7G.rst            | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 Misc/NEWS.d/next/Core_and_Builtins/2024-12-29-15-09-21.gh-issue-128330.IaYL7G.rst

diff --git a/Lib/_pyrepl/fancy_termios.py b/Lib/_pyrepl/fancy_termios.py
index 5b85cb0f525..0468b9a2670 100644
--- a/Lib/_pyrepl/fancy_termios.py
+++ b/Lib/_pyrepl/fancy_termios.py
@@ -40,7 +40,9 @@ class TermState:
             self.lflag,
             self.ispeed,
             self.ospeed,
-            self.cc,
+            # Always return a copy of the control characters list to ensure
+            # there are not any additional references to self.cc
+            self.cc[:],
         ]
 
     def copy(self):
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-12-29-15-09-21.gh-issue-128330.IaYL7G.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-29-15-09-21.gh-issue-128330.IaYL7G.rst
new file mode 100644
index 00000000000..8fe628d18f4
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2024-12-29-15-09-21.gh-issue-128330.IaYL7G.rst
@@ -0,0 +1 @@
+Restore terminal control characters on REPL exit.