Comment #2 on issue 343 by h2oz7v: XMonad.Prompt.RunOrRaise doesnt always detect an already running program http://code.google.com/p/xmonad/issues/detail?id=343 1. xprop output Firefox window one: https://gist.github.com/8e5b99edba20817873e6 Firefox window two: https://gist.github.com/f1fbd285158ecf471268 (ooo ascii icons!) 2. Firefox profiles Wasn't sure where to look for this. I only have one profile in my home directory: /home/user/.mozilla/firefox/7y6oa6fw.default If I look in about:cache for both windows, they both mention: 7y6oa6fw.default 3. "It was working all along" Nope, it definitely opens up a new window (they open side by side if launched within the same workspace), though only one process is running: $ pgrep -lf firefox 3477 firefox -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings

Updates: Status: Accepted Labels: Type-Defect Priority-Low Component-Contrib Usability Comment #4 on issue 343 by gwern0: XMonad.Prompt.RunOrRaise doesnt always detect an already running program http://code.google.com/p/xmonad/issues/detail?id=343 OK, I think I sort of see the problem. You specified you are using the Prompt module, right, not the raw WindowGo/runOrRaise code. The Prompt module has a line like

isApp :: String -> Query Bool isApp "firefox" = className =? "Firefox-bin" <||> className =? "Firefox"

Your Firefoxes, though, say

WM_CLASS(STRING) = "Navigator", "Shiretoko"

Looking at the prompt, it runs

open :: String -> X () open path = io (isNormalFile path) >>= \b -> if b then spawn $ "xdg-open \"" ++ path ++ "\"" else uncurry runOrRaise . getTarget $ path

Now 'firefox' maps to no filepath or directory, so we fall through to the else. 'getTarget' runs on the argument 'firefox', and it is defined as:

getTarget x = (x,isApp x)

As we saw, 'isApp' is defined incorrectly, so it will fail and return Query False, which will make 'runOrRaise' shrug and just execute whatever program is named 'firefox'. Firefox however is smart enough to know it's already running, and will just open a new window or tab, rather than a whole new browser. So, that's what's wrong. The solution probably involves something like 'raiseBrowser' and the 'raiseVar' code in WindowGo & ShellPrompt, but I'll let Justin decide what is the best solution. (The obvious quick hack is to make isApp accept Navigator and Shiretoko as strings matching apps. But the whole isApp idea is bad.) -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings