Feature request: command/shortcut to toggle visibility of docked application

[tom8347]

I've bound kdocker -f to a keyboard shortcut so that I can quickly dock a window. If I use this on a window that has already been docked it gives an error message. It would be great to be able to bind a command to a keyboard shortcut that will dock the window if it hasn't been docked before, and toggle its visibility if it has been docked before.