Comment 164 for bug 66566

Here's my situation: I use a Mac, but I use a Windows keyboard. I changed my modifier keys in MacOS system preferences so that Control is now Cmd and Cmd is now Control. This means that I can use ctrl + key on my keyboard for shortcuts, just like I would use in Windows (ctrl + c to copy, ctrl + v to paste). If I didn't make that change in system preferences, I'd have to use the Windows key for those same shortcuts (win + c to copy, win + v to paste), which is not how the shortcuts work in Windows. Before Firefox 64, ctrl + enter on my Windows keyboard would autocomplete the URL with www. and .com, because I changed my modifier keys in system preferences. This behavior is consistent with how it would work using the same keyboard in Windows. Because of this change to Firefox 64, I now have to use win + enter in Firefox, or I have to change my system preferences modifier keys back to defaults, which means Firefox would again use ctrl + enter on the keyboard to autocomplete, but for everything else in the OS, I'd have to use the Win key. So Firefox is now the odd program on my Mac. I have to retrain my fingers to use win + enter on the Mac, but continue to use ctrl + enter on Windows.

So while this is really more of a nuisance than a true show-stopper, it would be nice if you offered a config that would revert the changes on Macs if the user isn't using a Mac keyboard.