ediff is a popular and widely-used interactive diff/merge mode included with emacs. It works by opening up a small window that the user keeps in focus while using ediff commands like next patch; if the main emacs window is in focus, none of the ediff key commands are available. The small window generally obscures what the user is interested in and is kept as small and out of the way as possible; by default, it opens up very tiny in the top right of the screen. The window is already in way just by existing, but having xmonad try to manage it really screws things up. It's in the same class as MPlayer and GIMP; there's no use case for managing it, so do the right thing by default and always float it. I used title instead of className because the className is emacs, and floating all emacs buffers is definitely not the right thing to do. Wed Jan 30 18:38:20 EST 2008 Alec Berryman <alec@thened.net> * Always float ediff windows