On: Firefox 18 Gets Support for Retina Display

[tedunangst]

If. If I can restart a web server without restarting memcache and have a new process handle new requests while the old process handles existing requests, it's clearly possible for a browser to change its rendering engine for new tabs.

[ars → tedunangst]

The rendering engine, sure, but what about the rest of the browser? Cache, Cookie, Prefs, bookmarks, etc.

Browsers are not just rendering engines.

[azakai → tedunangst]

It's possible in theory, but very hard. None do it to my knowledge.