In pentadactyl (a firefox addon) you can write in an external editor instead a textbox, by default it spawns a gvim window and everytime it opens a pentadactyl.txt in tmp folder. Imho that behaviour is way more easier writing on a floating window. Using xprop I found the WM_NAME it's the only variable that doesn't change, so I thought that using it in my myManageHook would do it. $ xprop | grep 'WM_NAME' WM_NAME(STRING) = "pentadactyl.txt (/tmp) - GVIM" myManageHook = (composeAll , concat $ [ , [ className =? "stalonetray" --> doIgnore] -- a lot of output removed -- , [ title =? "pentadactyl.txt (/tmp) - GVIM" --> doFloat] ] I restarted xmonad, reopened the editor and I found that it doesn't work, I tried to check wm_name again, and guess what? WM_NAME(STRING) = "pentadactyl.txt (/tmp) - GVIM1" Obviously the last part "GVIM" changes all the time, so I can't know in advance which is gonna pick. There's some way to regexp the wm_name part? Until now, I couldn't find anything about this topic :( Regards, -- Pablo Olmos de Aguilera Corradini - @PaBLoX http://www.glatelier.org/ http://about.me/pablox/ http://www.linkedin.com/in/pablooda/ Linux User: #456971 - http://counter.li.org/