[3.13] pythongh-128330: Terminal control characters should be restored on repl exit (pythonGH-128331) (python#129233)

pythongh-128330: Terminal control characters should be restored on repl exit (pythonGH-128331)
(cherry picked from commit 0b15d9c)

Co-authored-by: Andy Fiddaman <[email protected]>

Author: miss-islington

Lib/_pyrepl/fancy_termios.py

@@ -40,7 +40,9 @@ def as_list(self):
             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):

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.