That works too, just not a scalable solution for all diacritic characters.

The former will work if you have not taken the effort to enable key repeat.

So the traditional behaviour of 'key repeat' has been replaced by 'long press context menu'?

My initial reaction was one of revulsion ("Why do they need to meddle with everything") but after taking a few moments to calm down I realised I could get used to that change.

I think to make it attractive, I would want a quick way to switch between behaviours when I need them. From what I can see, the change between 'long press' and 'key repeat' is effected by launching Terminal, making a configuration change and restarting the machine. I find this unappealing.

https://www.howtogeek.com/267463/how-to-enable-key-repeating...

Both work, as far as I know? They certainly seem to here.

You have both behaviours simultaneously?