Scandinavian keyboard layout can't handle input tilde (~)

To type ~ with Finnish/Swedish keyboard I have to press hotkey alt+^:

After that it shows something similar to ~ but right after when I press any other character (except Enter) it will erase “pre-tilde” symbol. Press Enter “converts” to normal ~ and nothing more (without real Enter).

I checked how this works with vanilla JS and it seems something wrong at browser-level:

Is it fixable? Wdyt?

Related bugs:

https://github.com/xtermjs/xterm.js/issues/174

Details

• Browser and browser version: Chrome (latest)
• OS version: MacOS X (latest)
• xterm.js version: 3.14.0

Steps to reproduce

1. Add support of Finnish keyboard in your OS
2. Try to use ~ from keyboard

[ojacques]

🥳 The workaround mentioned earlier https://github.com/xtermjs/xterm.js/issues/2151#issuecomment-515116994 by @insertt worked for me (French keyboard). No more é~ in VS Code terminal with my French layout keyboard!

• Create / install the layout without dead keys per the instructions above (here is the one I built for me: French Keyboard layout for VSCode.zip)
• Reboot (otherwise, Win 10 did not took fully into account)
• In Win 10 / Language settings, add the new keyboard layout

(My PC is configured for US, but I use a French Keyboard)

[alexandrehpiva]

I just discovered a strange thing: If I press the accent key 3 times and then press the letter, it works and I get: “~ã”