In this lecture from @ambrevar he shows logical operators applied to the bookmarks at this moment. I know things have changed since this afternoon (nEXT → Nyxt, for instance).
But, is this feature gone?
I tried using (or (and x y)) and it did not work. Could be a bug or an expected behavior.
By the way, the video does not show the (nil logical operator being used but this is the one that I crave the most as a Nyxt user.
For instance, while choosing a bookmark to open on the prompt buffer, I would like to do (not Wikipedia) and the list with the options would show all URLs that are not from Wikipedia.