Tk Source Code: View Ticket

Ticket UUID:	8f92d112b0e47962da284cbbb866cf6741ba07c4
Title:	Aqua: custom exit proc is not called when ::tk::mac::Quit is not defined
Type:	Bug	Version:	8.6.11
Submitter:	chrstphrchvz	Created on:	2023-12-22 18:16:29
Subsystem:	01. Bindings	Assigned To:	kevin_walzer
Priority:	5 Medium	Severity:	Important
Status:	Closed	Last Modified:	2026-03-30 02:17:09
Resolution:	Wont Fix	Closed By:	kevin_walzer
		Closed on:	2026-03-30 02:17:09
Description:	According to `::tk::mac` documentation, if the system asks Tk to quit but the `::tk::mac::Quit` proc is not defined, then the `exit` proc is called instead. This is no longer the case as of [a055a4fa5c68]. Prompted by how Python IDLE must now define `::tk::mac::Quit` instead of a custom `exit` proc to avoid losing unsaved user data: https://github.com/python/cpython/issues/112898
User Comments:	kevin_walzer added on 2023-12-22 20:28:48: The command is behaving as designed: Tk (under the tkinter hood) is calling "exit" because ::tk::Mac::Quit is not defined. The custom IDLE "exit" command is being ignored because quit events are managed by Tk, not Python. What they need to do (and I thought they did this) is map their custom exit command to ::tk::Mac::Quit via a call to tk.createcommand.