On Tue, 1 Oct 2019 at 21:55, Lars Ingebrigtsen <
larsi@gnus.org> wrote:
> What is missing, therefore, is for Emacs to act as if I 19ve tried to quit
> it when it is signalled by the X session manager. (This is what other
> apps do: they immediately bring up the 1cYou have unsaved documents 1d
> dialog, or equivalent.)
How does the window manager communicate to the apps that it's closing
down? Is there a standard?
Emacs already implements this: see src/xsmfns.c. The problem is its behaviour when there are background processes.