https://faq.i3wm.org/questions/Frequently asked questions and answers about the i3 window managerenCopyright i3, 2012Thu, 24 Sep 2015 18:02:09 +0000https://faq.i3wm.org/question/6435/how-to-match-window-without-title/I'm trying to work around missing window manager hints in Matlab windows using the `for_window` directive, but I'm running into some problems. Here is the xprop output for the "window" I'd like to be floating (this is actually a command-completion dialog): WM_STATE(WM_STATE): window state: Normal icon window: 0x0 _NET_WM_SYNC_REQUEST_COUNTER(CARDINAL) = 39845990 _NET_WM_USER_TIME(CARDINAL) = 644288 XdndAware(ATOM) = BITMAP _MOTIF_DRAG_RECEIVER_INFO(_MOTIF_DRAG_RECEIVER_INFO) = 0x6c, 0x0, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0 WM_CLIENT_LEADER(WINDOW): window id # 0x2600004 _NET_WM_PID(CARDINAL) = 3661 _NET_WM_WINDOW_TYPE(ATOM) = _KDE_NET_WM_WINDOW_TYPE_OVERRIDE, _NET_WM_WINDOW_TYPE_NORMAL _MOTIF_WM_HINTS(_MOTIF_WM_HINTS) = 0x2, 0x1, 0x0, 0x0, 0x0 WM_PROTOCOLS(ATOM): protocols WM_DELETE_WINDOW, WM_TAKE_FOCUS, _NET_WM_PING, _NET_WM_SYNC_REQUEST WM_NAME(STRING) = WM_LOCALE_NAME(STRING) = "en_US.UTF-8" WM_CLASS(STRING) = "", "" WM_HINTS(WM_HINTS): Client accepts input or input focus: True Initial state is Normal State. window id # of group leader: 0x2600004 WM_NORMAL_HINTS(WM_SIZE_HINTS): user specified location: 1203, 551 program specified location: 1203, 551 user specified size: 428 by 308 program specified size: 428 by 308 program specified minimum size: 428 by 0 program specified maximum size: 428 by 16383 window gravity: Static WM_CLIENT_MACHINE(STRING) = "nelarikon" WM_COMMAND(STRING) = { } In other words, this window has neither class, nor instance, nor title. I thought this was going to be easy to match with: for_window [class="^$" instance="^$" title="^$"] floating enable but it turns out this doesn't match. If I remove the `title` component, the window is matched (so I guess a window without title is different from a window with an empty title), but merely matching for empty class and instance also applies to a number of other windows (that I don't want to be floating). What is the best way to match this window? I've put the i3-dump-log output when the window appears on http://pastebin.com/CWxbnEns.Wed, 12 Aug 2015 16:59:03 +0000https://faq.i3wm.org/question/6435/how-to-match-window-without-title/https://faq.i3wm.org/question/6435/how-to-match-window-without-title/?answer=6437#post-id-6437Ultimately, there may not be an easy way to fix this. We are aware of this and a number of people have reported this in the case of Matlab already. The only fix is Matlab not doing this trash. These properties are there for a reason and Matlab should give them reasonable values. There is hopefully already a bug against Matlab given that many other people have reported this. I suggest finding and supporting it. There isn't really anything we can do from the i3 side. Thu, 13 Aug 2015 01:18:45 +0000https://faq.i3wm.org/question/6435/how-to-match-window-without-title/?answer=6437#post-id-6437https://faq.i3wm.org/question/6435/how-to-match-window-without-title/?comment=6678#comment-6678That's cool. The link doesn't work for me, though?Thu, 24 Sep 2015 18:02:09 +0000https://faq.i3wm.org/question/6435/how-to-match-window-without-title/?comment=6678#comment-6678https://faq.i3wm.org/question/6435/how-to-match-window-without-title/?comment=6676#comment-6676There is finally a public bug report about this. The description isn't really capturing the root of the problem, but Mathworks is aware that the described behavior is due to wrong window manager hints: https://www.mathworks.com/support/bugreports/1270423Thu, 24 Sep 2015 14:58:33 +0000https://faq.i3wm.org/question/6435/how-to-match-window-without-title/?comment=6676#comment-6676https://faq.i3wm.org/question/6435/how-to-match-window-without-title/?comment=6449#comment-6449Cool, thanks for the reference. It's a shame they want to keep this secret. It's a shame they keep any bug secret, really. Oracle's doing the same shit.Fri, 14 Aug 2015 18:45:28 +0000https://faq.i3wm.org/question/6435/how-to-match-window-without-title/?comment=6449#comment-6449https://faq.i3wm.org/question/6435/how-to-match-window-without-title/?comment=6448#comment-6448Yes, I reported it a while ago. For some reason they are unwilling to add this to the public Matlab bug list. In case anyone else want to press this, the Matlab internal reference number for this issue is ` [ ref:_00Di0Ha1u._500i0P8AhA:ref ]`Fri, 14 Aug 2015 17:06:28 +0000https://faq.i3wm.org/question/6435/how-to-match-window-without-title/?comment=6448#comment-6448