Make Alt+F4 work and warn the user about terminating more than one tab

[arnederuwe]

Environment

Windows build number: Microsoft Windows [Version 10.0.18362.175]
Windows Terminal version (if applicable): 0.2.1715.0

Steps to reproduce

Start The terminal app, try to close it using Alt + F4

Expected behavior

The app should close

Actual behavior

The app doesn't close, which is inconsistent with 99% of windows apps

[Shorotshishir]

On Second Thought.
PowerShell and WSL individually don't close on alt+f4 as they don't have it set for the task. Windows Terminal shows it has alt+f4 set to close but it doesn't work. perhaps they are trying to make it consistent with the rest two.

[DHowett-MSFT]

This is now the tracking issue for getting alt+f4 working and adding a dialog to stop users from harming their running session state.

[praneetloke]

It would also be nice if there was an option to prompt the user about closing a tab that has a running program. For example, running a development server of some kind in a tab in interactive mode (vs. daemon mode) is often a development workflow for all sorts of apps (Angular CLI, webpack-based apps, Node apps etc.) these days.

[DHowett-MSFT]

This was fixed by #2526.

[codenotworking]

I don't think this was fixed, because #17613 exists.

[DHowett]

@codenotworking thanks, we’ll keep all further discussion over there rather than on this five year old issue.