Compose key and hardware keyboard

[exzombie]

I'm really happy the compose key feature has landed, it's quite cool, especially the way the keys change to show you what's available. What I was looking forward to the most was the potential of using it together with a bluetooth keyboard. But I'm not sure how to do that. I would like to use the right-alt key as the compose key, but there's no option for this that I can find. Did I miss something?