From f226acf2d38af43939eaf09c8221638f382e3223 Mon Sep 17 00:00:00 2001
From: Vincent Bernat <bernat@luffy.cx>
Date: Mon, 22 Oct 2012 16:32:54 +0200
Subject: [PATCH] bindings: remove a window from the "undo" stack when it
 becomes unmanaged

---
 rc/bindings.lua | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/rc/bindings.lua b/rc/bindings.lua
index fd6fcb1..ab7ef6c 100644
--- a/rc/bindings.lua
+++ b/rc/bindings.lua
@@ -23,6 +23,15 @@ end
 -- function that will effectively toggle things.
 local function toggle_window(filter)
    local undo = {}		-- undo stack
+   client.add_signal('unmanage',
+                     function(c)
+                        -- If the client is in the undo stack, remove it
+                        while true do
+                           idx = awful.util.table.hasitem(undo, c)
+                           if not idx then break end
+                           table.remove(undo, idx)
+                        end
+                     end)
    local toggle = function()
       -- "Current" screen
       local s = client.focus and client.focus.screen or mouse.screen