[cadecairos]

In Firefox, you can right click on any search box and there's an option to "add a keyword search"

For a Wikipedia search, you'd set the keyword to "w" and then you'd get the identical behaviour you have in Chrome when typing "w foo" in your Awesome Bar.

[Symmetry]

Ah, there we go. I don't get the same visual cues which confused me a bit but those aren't actually important at all. Thank you very much.