At first, I was confused, because I've been using this feature in Safari for years. But then I remembered that years ago I installed an extension called "Omnikey" that provides this: http://marioestrada.github.io/safari-omnikey/, https://safari-extensions.apple.com/details/?id=ec.mario.omn.... If this is the only thing holding you back from using Safari, install the extension and switch. It's been working so well for years that I forgot it wasn't built in.
