From 067748d816efb493083845244f1bc375ee89d526 Mon Sep 17 00:00:00 2001
From: Ronald Oussoren <ronaldoussoren@mac.com>
Date: Fri, 23 Feb 2024 03:15:39 +0100
Subject: [PATCH] gh-88516: show file proxy icon in IDLE editor windows on
 macOS (GH-112894)

The platform standard on macOS is to show a proxy icon for open
files in the titlebar of Windows. Make sure IDLE matches this
behaviour.

Don't use both the long and short names in the window title.
The behaviour of other editors (such as Text Editor) is to show
only the short name with the proxy icon.

(cherry picked from commit b48101864c724a7eab41a6878a836f38e54e04fb)

Co-authored-by: Ronald Oussoren <ronaldoussoren@mac.com>
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
---
 Lib/idlelib/editor.py                                 | 11 ++++++++++-
 .../2023-12-09-11-04-26.gh-issue-88516.SIIvfs.rst     |  2 ++
 2 files changed, 12 insertions(+), 1 deletion(-)
 create mode 100644 Misc/NEWS.d/next/IDLE/2023-12-09-11-04-26.gh-issue-88516.SIIvfs.rst

diff --git a/Lib/idlelib/editor.py b/Lib/idlelib/editor.py
index 8ee8eba64367a5..7bfa0932500d81 100644
--- a/Lib/idlelib/editor.py
+++ b/Lib/idlelib/editor.py
@@ -1044,7 +1044,9 @@ def open_recent_file(fn_closure=file_name):
     def saved_change_hook(self):
         short = self.short_title()
         long = self.long_title()
-        if short and long:
+        if short and long and not macosx.isCocoaTk():
+            # Don't use both values on macOS because
+            # that doesn't match platform conventions.
             title = short + " - " + long + _py_version
         elif short:
             title = short
@@ -1059,6 +1061,13 @@ def saved_change_hook(self):
         self.top.wm_title(title)
         self.top.wm_iconname(icon)
 
+        if macosx.isCocoaTk():
+            # Add a proxy icon to the window title
+            self.top.wm_attributes("-titlepath", long)
+
+            # Maintain the modification status for the window
+            self.top.wm_attributes("-modified", not self.get_saved())
+
     def get_saved(self):
         return self.undo.get_saved()
 
diff --git a/Misc/NEWS.d/next/IDLE/2023-12-09-11-04-26.gh-issue-88516.SIIvfs.rst b/Misc/NEWS.d/next/IDLE/2023-12-09-11-04-26.gh-issue-88516.SIIvfs.rst
new file mode 100644
index 00000000000000..b6dea5029bf353
--- /dev/null
+++ b/Misc/NEWS.d/next/IDLE/2023-12-09-11-04-26.gh-issue-88516.SIIvfs.rst
@@ -0,0 +1,2 @@
+On macOS show a proxy icon in the title bar of editor windows to match
+platform behaviour.