Indeed, with the french keyboard on Windows,
e.key values are:
- "Dead" when pressing on the grave accent,
- "`" when pressing on the space bar preceded by the grave accent.
key value in the script is "Ctrl + Dead" when pressing on Ctrl together with the grave accent.
Regarding the keyCode,
e.code for the grave accent is "Backslash" on the MacBook french keyboard.
Hope this helps.