[xmonad] Managehook which only shifts window if workspace is empty

[Toby Cubitt]

On Sat, Feb 11, 2012 at 06:20:44PM -0500, Brandon Allbery wrote:
> On Sat, Feb 11, 2012 at 18:11, Brandon Allbery <allbery.b at gmail.com> wrote:
> 
> >     className =? "mutt" --> liftX (doShiftEmpty "email")
> >
> 
> Oops, slightly wrong; liftX will propagate the result back, which in this
> case is () which is not compatible with (Endo WindowSet) as expected by
> ManageHook.  The correct fix is
> 
> > appName =? "mutt" --> liftX (doShiftEmpty "email") >> idHook
> 
> which discards the () and substitutes an appropriate do-nothing Endo
> WindowSet.
> 
> -- 
> brandon s allbery                                      allbery.b at gmail.com
> wandering unix systems administrator (available)     (412) 475-9364 vm/sms

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-- 
Dr T. S. Cubitt
Mathematics and Quantum Information group
Department of Mathematics
Complutense University
Madrid, Spain

email: tsc25 at cantab.net
web:   www.dr-qubit.org