Fix for issue #10107: Without this patch IDLE on OSX doesn't warn about unsaved files when quitting.

Lib/idlelib/FileList.py

@@ -48,7 +48,7 @@ def gotofileline(self, filename, lineno=None):
     def new(self, filename=None):
         return self.EditorWindow(self, filename)
 
-    def close_all_callback(self, event):
+    def close_all_callback(self, *args, **kwds):
         for edit in list(self.inversedict):
             reply = edit.close()
             if reply == "cancel":

Lib/idlelib/macosxSupport.py

@@ -103,6 +103,11 @@ def config_dialog(event=None):
     if flist:
         root.bind('<<close-all-windows>>', flist.close_all_callback)
 
+        # The binding above doesn't reliably work on all versions of Tk
+        # on MacOSX. Adding command definition below does seem to do the
+        # right thing for now.
+        root.createcommand('exit', flist.close_all_callback)
+
 
     ###check if Tk version >= 8.4.14; if so, use hard-coded showprefs binding
     tkversion = root.tk.eval('info patchlevel')

Misc/NEWS

@@ -2,6 +2,18 @@
 Python News
 +++++++++++
 
+What's New in Python 3.2 Beta 2?
+================================
+
+*Release date: XXXX-XX-XX*
+
+
+Library
+-------
+
+* Issue #10107: Warn about unsaved files in IDLE on OSX.
+
+
 What's New in Python 3.2 Beta 1?
 ================================