'Aloha!

Just wanna say your hack works brilliant. Even added an else statement to fire a
notify-send -t 1 "Saved your firefox from a unpleasent CTRL-Q"

/mogul

I use something like:

bindsym Ctrl+q exec /bin/false

to disable it systemwide.

And for being able to kill other applications, one may use bindsym $mod+Shift+q kill

I had to add "Nightly" as a window name to get this to work on Nightly, but for some reason it's still interfering with MATE. I have it bound to Ctrl+Q in MATE's keyboard shortcuts, and it successfully intercepts it for Firefox. However, it's not passing it into the terminal for the one application that needs it (micro, my preferred editor.) Any tips on trying to sort this out? I'm on Arch Linux.

I don't know if I'm doing it wrong but I downloaded i3-wm package, added the bindsym Ctrl+q exec ~/noctrlq.sh on my i3 config file. And copy the script to /etc/i3/
?

pls

Hey is there any good reason for using xvkbd over xdotool here?

Thanks for this repo BTW, it helped me with some other problem I had.

Thanks for the code. noctrlq_xvkbd.sh works in Debian 11, but I had to remove the -xsendevent flag, didn't work with it.
There's a small delay before a window is closed, though (less than a second, but still noticeable)

FYI there are now solutions to disable shortcuts directly in FF, see https://support.mozilla.org/en-US/questions/1384971

You're already using xdotool, so why not just use that to send the key? It's one less dependency.

#!/bin/sh
W="$(xdotool getactivewindow)"
S1="$(xprop -id "$W" | awk -F '"' '/WM_CLASS/{print $4}')"
if [ "$S1" != "Firefox" ] && [ "$S1" != "Firefox Developer Edition" ]; then
	xdotool key --clearmodifiers --window "$W" "ctrl+q"
fi

--window and --clearmodifiers are to stop the computer from thinking you aren't holding ctrl anymore.

(I also made it compatible with just plain sh, instead of requiring bash)

(Also^2 it's not recommended to use /bin/bash as bash isn't required to be in /bin (But sh is). However env is required to be in /usr/bin by posix so you should do /usr/bin/env bash)

xdotool key does not work properly on all systems.
For me it would not send key combinations properly.
The old code using xvkbd does work for me.

It may be good to mention the xvkbd solution too.
Maybe as outcommented code and a comment explaining that the user should try that if it doesn't work with xdotool

For the avoidance of doubt, it would help to specify the terms under which users may use and share this script. I acknowledge that the closure of #1 without comment indicates that GPLv3 was rejected as a license. So what is the license?