[xmonad] Why doesnot it jump to the browser when pressing URL in emacs-erc ?

[z_axis]

The following is in in ~/.xmonad/xmonad.hs:
import XMonad.Hooks.EwmhDesktops
xmonad $ ewmh defaultConfig { ...}

but it still doesnot work !

在 Mon, 07 Jan 2013 13:59:00 +0800，brandon s allbery kf8nh
<allbery.b at gmail.com> 写道:

> Do you have EwmhDesktops enabled?  If not, xmonad will not recognize the  
> browser's request to take focus.  Basic xmonad is very minimal and only  
> understands the base ICCCM WM control requests.
>
> z_axis <z_axis at 163.com> wrote:
>
>> hi, friends
>> Using the same emacs config, clicking URL in emacs-erc under STUMPWM
>> will
>> open and jump to the browser(Opera). However, under XMONAD it just open
>>
>> the URL without switching the focus to the browser.
>> it is not a big problem but a bit uncomfortable.
>>
>> Any suggestion is appreciated !
>>
>>
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>