Option to close a selected window with the ctrl+w shortcut

[GrantByrne]

This is one feature that I liked having on https://github.com/kvakulo/Switcheroo was the ability to close a running app.

I think the logic would follow something like this:

1. User highlights an app that an open window
2. User presses ctrl+w
3. The app goes through gnome to trigger the app close action. I'm not sure if this is provided by gnome, but that would be really nice.

Additional variations of this would be to have a shortcut to kill the app instead of just having gnome close it. Something like "shift+ctrl+w" would be pretty cool.

[daniellandau]

I've been thinking about close functionality but haven't found a design that would satisfy my "do no harm" and "principle of least surprise" philosophies. Maybe if the close functionality had to be enabled explicitly in preferences.

[GrantByrne]

I would be fine with explicitly enabling this in the settings. Would also likely want to manually set the keyboard shortcut for all the people who want something that isn't ctrl+w for this.