Each time I need to use square brackets '[]' I need to find them somewhere else and Copy & Paste them. I could add an extra language to my keyboard and switch languages every time I need to use square brackets but it would be nice to find simpler way that works with the Swedish keyboard.
I use Catalina MacOS and I've tried both using the keyboard of my MacBook Pro and and external Logitech keyboard but so far no success.
Best Answer
Simplest way to find anything like this is from the Keyboard Viewer, available as an option for the menu bar in System Prefs > Keyboard > Input sources [or also in that pref itself]
Finding the Swedish layout in that panel shows
[&]on Opt 8 & 9 respectively.