On Wed, Oct 20, 2010 at 11:14:54PM +1100, Владимир Байраковский wrote:

Hi!

Is there any hook or something else to execute some action (function) on every workspace changing event?

Yes, it is called logHook, since it is often used for outputting logging/status bar information. But it can equally well be used for other things as well.

I want xmonad to remove current workspace right after I leav it if it is empty.

This should not be too hard. In fact, I think you don't even need the logHook for this. Just import XMonad.Actions.DynamicWorkspaces and change your workspace-switching keybindings to call removeWorkspace before actually switching. removeWorkspace removes the current workspace if it contains no windows, and does nothing otherwise. Also, depending on what you want, this may not even be necessary: would it suffice for your needs to have your status bar display only non-empty workspaces (this is what I do) instead of actually *removing* empty workspaces? There may be good reasons for actually removing empty workspaces, it depends on what you want, but I thought it was worth asking. -Brent