Subject: bug#15029: 24.3; feature-request: add window-focus-lost-hook

From: Glenn Morris <[email-masked]>
Date: Tue, 06 Aug 2013 19:57:42 -0400

Ivan Baidakou wrote:

> Please, add very useful feature: window-focus-lost-hook,

Maybe you can do this now in Emacs trunk?
But the feature is not documented anywhere (even in NEWS), and it's not
clear how to use it:

http://lists.gnu.org/archive/html/emacs-devel/2013-07/msg00555.html