awesome-xev-bypass-keys.lua

-- Do not grab global / client keys when the xev event tester window is focused.
do
  local saved = {}
  function xev_globalkeys_focus(c)
    if c.name == 'Event Tester' then
      saved.root, saved.client = root.keys(), c.keys
      root.keys({})
      -- Only map alt-f4.
      c.keys = {awful.key({ "Mod1", }, "F4", function (c) c:kill() end)}
    end
  end
  function xev_globalkeys_unfocus(c)
    if c.name == 'Event Tester' then
      root.keys(saved.root)
      c.keys = saved.client
    end
  end
  client.connect_signal("focus", xev_globalkeys_focus)
  client.connect_signal("unfocus", xev_globalkeys_unfocus)
end