Windows Terminal version

1.11.3471.0

Windows build number

10.0.19042.1526

Other Software

WSL Debian GNU/Linux 11 (bullseye)

Emacs 27.1

Steps to reproduce

ncurses:

1. Install ncurses-examples: sudo apt install ncurses-examples
2. Run demo_altkeys: /usr/lib/ncurses/examples/demo_altkeys
3. Type ctrl-alt-\

emacs:

1. Run emacs
2. Type C-h k (describe-key)
3. Type ctrl-alt-\

Expected Behavior

ncurses:
Something like: 0.259 Keycode ???, name ESC-^\

emacs:
Open a new window pane that says: C-M-\ runs the command indent-region

Actual Behavior

Nothing