awful: add client.setslave()

Signed-off-by: Julien Danjou <julien@danjou.info>

awesomerc.lua.in

@@ -393,6 +393,10 @@ function hook_manage(c)
         awful.client.movetotag(tags[target.screen][target.tag], c)
     end
 
+    -- Set the windows at the slave,
+    -- i.e. put it at the end of others instead of setting it master.
+    -- awful.client.setslave(c)
+
     -- Honor size hints
     c.honorsizehints = true
 end

lib/awful.lua.in

@@ -331,6 +331,16 @@ function client.master(screen)
     return capi.client.visible_get(s)[1]
 end
 
+-- Set the client as slave: put it at the end of other windows.
+-- @param c The window to set as slave.
+-- @return 
+function client.setslave(c)
+    local cls = capi.client.visible_get(c.screen)
+    for k, v in pairs(cls) do
+        c:swap(v)
+    end
+end
+
 --- Move/resize a client relative to current coordinates.
 -- @param x The relative x coordinate.
 -- @param y The relative y coordinate.