Remapping fn or Right alt/opt from Macbook keyboard

[Ichicoro]

Hello!
Is there any way to remap fn or the right alt from a macbook keyboard?
It seems like key(464) => replace "Ctrl" for example doesn't work. (464 should be fn's keycode from libinput debug-events).

[meedstrom]

Far as I know, Fn emits no keycode on Macbook and many other devices, so it can't be changed. But if you're actually seeing a keycode on testing, maybe Apple changed this.

Anyway, "Ctrl" maybe should be "Control". I'm still looking for the list of strings Hawck uses to describe keys. No idea what Back or Page Up are called. I propose you test with other keys to rule out that the problem isn't something else.