update dynamic border change

util/init.lua

@@ -210,6 +210,12 @@ function util.useless_gaps_resize(thatmuch)
     awful.layout.arrange(mouse.screen)
 end
 
+-- On the fly global border change
+function util.global_border_resize(thatmuch)
+    beautiful.global_border_width = tonumber(beautiful.global_border_width) + thatmuch
+    awful.layout.arrange(mouse.screen)
+end
+
 -- Check if an element exist on a table
 function util.element_in_table(element, tbl)
     for _, i in pairs(tbl) do