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i3 FAQ - Individual question feedhttps://faq.i3wm.org/questions/Frequently asked questions and answers about the i3 window managerenCopyright i3, 2012Fri, 11 Jul 2014 22:31:08 +0000Problem when matching windows with changed instancehttps://faq.i3wm.org/question/4196/problem-when-matching-windows-with-changed-instance/Hello, I have the following script running when I press Mod4+Enter : #!/bin/bash i3-msg '[instance="nextURxvt"] move workspace current' WINDOW_ID=`xwininfo -tree -root|grep nextURxvt|awk '{print $1;}'` xprop -id $WINDOW_ID -f WM_CLASS 8ss -set WM_CLASS "urxvt" i3-msg 'exec urxvtc -name nextURxvt' What it does is : - Pull the URxvt instance named nextURxvt from the scratchpad to the current workspace. - Change its WM_CLASS from `WM_CLASS(STRING) = "nextURxvt", "URxvt"` to `WM_CLASS(STRING) = "urxvt"` - Open a new urxvt in the scratchpad (the mapping is in my i3 config). The problem is : when I do ` i3-msg '[instance="nextURxvt"] move workspace current'`, even the renamed URxvt's are moved to the current workspace, even though if I run `xprop|grep nextURxvt` there is nothing. What is wrong ? Thanks Thu, 10 Jul 2014 13:36:19 +0000https://faq.i3wm.org/question/4196/problem-when-matching-windows-with-changed-instance/Comment by TonyC for Hello, I have the following script running when I press Mod4+Enter : <pre><code>#!/bin/bash i3-msg '[instance="nextURxvt"] move workspace current' WINDOW_ID=`xwininfo -tree -root|grep nextURxvt|awk '{print $1;}'` xprop -id $WINDOW_ID -f WM_CLASS 8ss -set WM_CLASS "urxvt" i3-msg 'exec urxvtc -name nextURxvt' </code></pre> What it does is : <ul> <li>Pull the URxvt instance named nextURxvt from the scratchpad to the current workspace.</li> <li>Change its WM_CLASS from <code>WM_CLASS(STRING) = "nextURxvt", "URxvt"</code> to <code>WM_CLASS(STRING) = "urxvt"</code></li> <li>Open a new urxvt in the scratchpad (the mapping is in my i3 config).</li> </ul> The problem is : when I do <code>i3-msg '[instance="nextURxvt"] move workspace current'</code>, even the renamed URxvt's are moved to the current workspace, even though if I run <code>xprop|grep nextURxvt</code> there is nothing. What is wrong ? Thanks https://faq.i3wm.org/question/4196/problem-when-matching-windows-with-changed-instance/?comment=4212#comment-4212We cache class/instance when the window is managed and then it doesn't get updated afterwards. It's not hard to fix. See https://github.com/i3/i3/issues/1052Fri, 11 Jul 2014 22:31:08 +0000https://faq.i3wm.org/question/4196/problem-when-matching-windows-with-changed-instance/?comment=4212#comment-4212Comment by tigrezno for Hello, I have the following script running when I press Mod4+Enter : <pre><code>#!/bin/bash i3-msg '[instance="nextURxvt"] move workspace current' WINDOW_ID=`xwininfo -tree -root|grep nextURxvt|awk '{print $1;}'` xprop -id $WINDOW_ID -f WM_CLASS 8ss -set WM_CLASS "urxvt" i3-msg 'exec urxvtc -name nextURxvt' </code></pre> What it does is : <ul> <li>Pull the URxvt instance named nextURxvt from the scratchpad to the current workspace.</li> <li>Change its WM_CLASS from <code>WM_CLASS(STRING) = "nextURxvt", "URxvt"</code> to <code>WM_CLASS(STRING) = "urxvt"</code></li> <li>Open a new urxvt in the scratchpad (the mapping is in my i3 config).</li> </ul> The problem is : when I do <code>i3-msg '[instance="nextURxvt"] move workspace current'</code>, even the renamed URxvt's are moved to the current workspace, even though if I run <code>xprop|grep nextURxvt</code> there is nothing. What is wrong ? Thanks https://faq.i3wm.org/question/4196/problem-when-matching-windows-with-changed-instance/?comment=4197#comment-4197Have you tried "i3-msg -t get_tree"? there you can see what properties are set on each client.Thu, 10 Jul 2014 16:06:48 +0000https://faq.i3wm.org/question/4196/problem-when-matching-windows-with-changed-instance/?comment=4197#comment-4197Comment by Michael for Hello, I have the following script running when I press Mod4+Enter : <pre><code>#!/bin/bash i3-msg '[instance="nextURxvt"] move workspace current' WINDOW_ID=`xwininfo -tree -root|grep nextURxvt|awk '{print $1;}'` xprop -id $WINDOW_ID -f WM_CLASS 8ss -set WM_CLASS "urxvt" i3-msg 'exec urxvtc -name nextURxvt' </code></pre> What it does is : <ul> <li>Pull the URxvt instance named nextURxvt from the scratchpad to the current workspace.</li> <li>Change its WM_CLASS from <code>WM_CLASS(STRING) = "nextURxvt", "URxvt"</code> to <code>WM_CLASS(STRING) = "urxvt"</code></li> <li>Open a new urxvt in the scratchpad (the mapping is in my i3 config).</li> </ul> The problem is : when I do <code>i3-msg '[instance="nextURxvt"] move workspace current'</code>, even the renamed URxvt's are moved to the current workspace, even though if I run <code>xprop|grep nextURxvt</code> there is nothing. What is wrong ? Thanks https://faq.i3wm.org/question/4196/problem-when-matching-windows-with-changed-instance/?comment=4205#comment-4205In addition to the previous comment, perhaps `i3-dump-log` (see http://i3wm.org/docs/debugging.html) will be helpful.Fri, 11 Jul 2014 18:08:16 +0000https://faq.i3wm.org/question/4196/problem-when-matching-windows-with-changed-instance/?comment=4205#comment-4205