The current floating layer code handles the interface to the outside world quite nicely, but interacts strangely with fullscreen mode. The problems stem from the fact that windows are lifted into the floating layer by setting a bit flag, basically. They are then rendered separately if this flag is set. This is good, but means that floating windows keep an implicit position in the tiled ordering -- although they don't physically appear to be in the tiled layer. This leads to some oddities: * moving a floating window in fullscreen tiled mode, will shift focus of the tiled layer to the window after the implicit position of the floating mode. * mod-shift-j reorders the implicit position of a floating window in the tiled layer, but this change isn't visible I think the best way to solve this is to move from an 'implicit' floating layer, denoted by flag bits, to an explicit floating layer on each workspace: data Workspace i a = Workspace { tag :: !i , tiled :: Stack a , float :: Stack a } Now we can be sure that the floating layer is fully detached, and can be operated on in isolation, as its own zipper. For one, this will mean fullscreen mode works (since focus isn't lost on the tiled stack). Should be able to reuse the existing code (changing modify a bit). We also get a new set of operatoins on the float layer alone, or on the union of the two layers. Spencer, Jason, suggestions? Everyone else, not tracking the stable branch -- what do you think of the tiling mode as it is? this will likely be the main new (and final!) feature missing before 0.3 (and forward to 1.0). -- Don