`Alt` + `-` not caught by terminal

[tomgroenwoldt]

I noticed that the combination Alt + - is not caught by the xterm.js terminal instance. I've tested this by logging the keypresses with terminal.onKey. The keypress itself is recognized by the browser.

Details

• Browser and browser version: Firefox 141.0
• OS version: Arch Linux 6.15.7
• xterm.js version: 5.5.0,

Steps to reproduce

1. Add logging via the terminal.onKey event listener.
2. Press Alt + - and see that no event is caught by the terminal.

[tomgroenwoldt]

It seems like it's not only Alt + -, but also Alt + ;.