As I'm using EN/RU double keyboard layout configuration, there's a lot of situations, when I spell something to address bar in English, while current keyboard layout is set for Russian, and vice versa. It would be useful to see a guess, which offers "translayouted" text in such cases. Is there an addon for Firefox to do this?
I have not heard about Firefox add-on, but there are some system-dependent tools for that:
All of them can switch keyboard layout on the fly, but if it annoys you, you can disable autoswitch and translate
Also Google search detects wrong layout in most cases, so you can set ‘I’m feeling lucky’ as default search engine, then something like