Based on the information at Remove app from alt-tab switcher I was able to successfully prevent Google Chrome and Firefox from appearing when I press Alt-Tab by using...
wmctrl -r "Google Chrome" -b add,skip_taskbar
, andwmctrl -r "Firefox" -b add,skip_taskbar
, but- inexplicably (to me)
wmctrl -r "CopyQ" -b add,skip_taskbar
does not prevent CopyQ from appearing when I press Alt-Tab.
How can I prevent CopyQ from appearing when I press Alt-Tab?