From 7ce3928fb8ab2b0f0b4f4ca22485b47631872b57 Mon Sep 17 00:00:00 2001
From: Louie Lu <git@louie.lu>
Date: Wed, 28 Jun 2017 16:44:20 +0800
Subject: [PATCH 1/3] bpo-29926: IDLE: Fix blocking function ignore SIGINT

Co-Authored-By: Martin Panter <vadmium+py@gmail.com>
---
 Lib/idlelib/run.py | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py
index 9f6604bb0acc58..4e061a58407e94 100644
--- a/Lib/idlelib/run.py
+++ b/Lib/idlelib/run.py
@@ -2,6 +2,7 @@
 import linecache
 import queue
 import sys
+import signal
 import time
 import traceback
 import _thread as thread
@@ -86,6 +87,7 @@ def handle_tk_events(tcl=tcl):
 exit_now = False
 quitting = False
 interruptable = False
+finish = False
 
 def main(del_exitfunc=False):
     """Start the Python execution server in a subprocess
@@ -108,6 +110,8 @@ def main(del_exitfunc=False):
     global exit_now
     global quitting
     global no_exitfunc
+    global main_thread
+    main_thread = threading.get_ident()
     no_exitfunc = del_exitfunc
     #time.sleep(15) # test subprocess not responding
     try:
@@ -439,7 +443,6 @@ def decode_interrupthook(self):
         quitting = True
         thread.interrupt_main()
 
-
 class Executive(object):
 
     def __init__(self, rpchandler):
@@ -449,9 +452,10 @@ def __init__(self, rpchandler):
         self.autocomplete = autocomplete.AutoComplete()
 
     def runcode(self, code):
-        global interruptable
+        global interruptable, finish
         try:
             self.usr_exc_info = None
+            finish = False
             interruptable = True
             try:
                 exec(code, self.locals)
@@ -472,11 +476,22 @@ def runcode(self, code):
                 self.rpchandler.interp.open_remote_stack_viewer()
         else:
             flush_stdout()
+        finally:
+            finish = True
 
     def interrupt_the_server(self):
         if interruptable:
             thread.interrupt_main()
 
+            # See issue 29926, fallback when interrupt_main doesn't work
+            def _interrupt_by_signal_pthread():
+                if not finish:
+                    try:
+                        signal.pthread_kill(main_thread, signal.SIGINT)
+                    except AttributeError:
+                        pass
+            threading.Timer(0.2, _interrupt_by_signal_pthread).start()
+
     def start_the_debugger(self, gui_adap_oid):
         return debugger_r.start_debugger(self.rpchandler, gui_adap_oid)
 

From a1b5a2e30fc7433651eae887d3364b4a7ed7f965 Mon Sep 17 00:00:00 2001
From: Terry Jan Reedy <tjreedy@udel.edu>
Date: Mon, 25 Jan 2021 08:04:54 -0500
Subject: [PATCH 2/3] Update run.py

---
 Lib/idlelib/run.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py
index 4e061a58407e94..375d8faf333d4e 100644
--- a/Lib/idlelib/run.py
+++ b/Lib/idlelib/run.py
@@ -3,6 +3,7 @@
 import queue
 import sys
 import signal
+import textwrap
 import time
 import traceback
 import _thread as thread
@@ -443,7 +444,7 @@ def decode_interrupthook(self):
         quitting = True
         thread.interrupt_main()
 
-class Executive(object):
+class Executive:
 
     def __init__(self, rpchandler):
         self.rpchandler = rpchandler

From cdbad974be198d03238016f29f3881ecb4b095bc Mon Sep 17 00:00:00 2001
From: Oleg Iarygin <oleg@arhadthedev.net>
Date: Fri, 3 Feb 2023 13:45:48 +0400
Subject: [PATCH 3/3] Add a NEWS entry

---
 .../next/IDLE/2023-02-03-13-39-00.gh-issue-74112.9tqu39.rst     | 2 ++
 1 file changed, 2 insertions(+)
 create mode 100644 Misc/NEWS.d/next/IDLE/2023-02-03-13-39-00.gh-issue-74112.9tqu39.rst

diff --git a/Misc/NEWS.d/next/IDLE/2023-02-03-13-39-00.gh-issue-74112.9tqu39.rst b/Misc/NEWS.d/next/IDLE/2023-02-03-13-39-00.gh-issue-74112.9tqu39.rst
new file mode 100644
index 00000000000000..c237af2b7b3ea0
--- /dev/null
+++ b/Misc/NEWS.d/next/IDLE/2023-02-03-13-39-00.gh-issue-74112.9tqu39.rst
@@ -0,0 +1,2 @@
+IDLE Shell no longer ignores Ctrl+C when an interpreter waits on a
+blocking function. Patch by Louie Lu.