Not sure what you mean by a "regular" editor, but yeah, I think so. We use Brackets to develop Brackets in a weird web platform recursion thing. It's still pre-1.0, but it's extremely stable.
I just realized I actually proposed a Brackets talk back in August and never heard back.
Sorry to bring it up again, I don't mean to spam. I'm based in Washington, DC with a bunch of friends in Philly, so I'm always looking for a reason to take the train ride. I think I signed up for the group back then when I submitted the topic.
-Adam