[xmonad] darcs patch: ThreeColMid - Swap slave window positions

[Adam Vogt]

* On Sunday, May 03 2009, Anders Engstrom wrote:

>Sun May  3 21:50:26 CEST 2009  Anders Engstrom <ankaan at gmail.com>
>  * ThreeColMid - Swap slave window positions
>  This patch will swap the positions of the two slave windows and this 
>  will result in a more intuitive window order. When using focusDown 
>  beginning in the master pane we will move in the following graphical 
>  order 2->3->1->2->3 instead of 2->1->3->2->1. This is backwards from 
>  what is expected.

So instead of going down the two columns alternating between the two, 
you've changed it to go down a single column at a time?

>  The small drawback is that increasing from 2 to 3 windows (and therefore 
>  also columns) will behave in a less intuitive way. The window in the 
>  right column will jump to the left of the screen.

Perhaps there is a way to avoid this issue and keep your changes to the 
focus behavior: I found ThreeColMid to be quite predictable when I tried it 
a couple weeks ago.

Perhaps you could achieve focusing down a single column with a binding to 
something like:

> windows $ W.focusDown . W.focusDown

Of course with a special case for < 3 windows. Perhaps something like 
PerLayoutKeys would be required for making such configurations more sane.

>  I think that it is a good idea to make this change since I rely a lot on 
>  the window order but people using WindowNavigation may be of a different 
>  opinion.

WindowNavigation users are unaffected by window order, so the only issue 
would be your changing of the behavior when windows are added.

>  An alternative is to add an option to select in what way to behave, but 
>  that could be overkill... I leave it up to discussion and devs to 
>  decide.

I agree about that being overkill.

Adam