Get plan9port for OSX, forget XCode, Vi, Emacs.

Set it up accordingly, you won't go back.

Acme under OSX shines.

Speaking to my heart. I had Acme set up but it needs a good mouse to make it work. I use a trackball mouse, it doesn't have the three finger chords.

Fucking love the concept, but it'd take a lot of work to get the immersiveness of modern systems. e.g. completion/suggestions, linting, etc. none of it is built for plan9.

Ironic because plan9 is amazingly trackball friendly.

Also, if you code in Go:

https://github.com/jmigpin/editor

It diverges somehow from Acme, but it has autocomplete and a similar interface. I love it :)

acme2k has keybindings too, you can use these instead of chords

https://github.com/karahobny/acme2k

If you aren't outraged that emacs or vi aren't the default, are you sure you're a typical HN reader?!

The outrage is that you can't change from Xcode. I use macdown for mathjax files for math.stackexchange.com, and I have to use "open with" to choose macdown every time.

You can change the app associated with a file type from the "info" dialog for any file of that type.

Yeah, I know. If you want good UX, best to switch to living in the 1990s.