I came across this repository from the Spacemacs#develop installation instructions, which I noticed recently changed from recommending https://github.com/railwaycat/homebrew-emacsmacport to this.
What's the difference between this and that?
The Spacemacs instructions only mention that this provides a Spacemacs icon, yet emacs-mac has --with-spacemacs-icon (at least it did last time I installed it).
I'm happy to use this repo, just wanted to understand which of the two might be better choices going forward. I know that you're involved in Spacemacs, so perhaps this emacs distribution might have a better chance at alignment with Spacemacs?
Emacs Mac Port is GNU Emacs plus some additions for OS X (mostly related to GUI, AFAIK). These additions are made on the Emacs source level. So it's not really GNU Emacs anymore. Also you are tided to Emacs Mac Port version.
Emacs Plus is just plain GNU Emacs with some additions on formulae level (at least for now). Currently it only gives you an option to install Emacs with Spacemacs icon. And you are free to install Emacs 24 or Emacs 25 via this formulae (just like with plain emacs).
So basically, we switched from Emacs Mac Port recommendation to GNU Emacs. We just wanted to give users option to install Emacs with Spacemacs icon. Since we didn't want to confuse anyone with Spacemacs distribution of Emacs, we named it 'emacs-plus'.
Some useful references:
Ahhh, I see now! Thank you for the explanation. I remember seeing the first link/issue come through Spacemacs now that I think about it.
I've been experiencing the issues mentioned with emacsmacport, so I'm going to give emacs-plus a shot for some time!
Feel free to close this Issue. Or if you want to keep this explanation information around keep it open or move to README 馃槂
so I'm going to give emacs-plus a shot for some time
For now you are just giving a shot to GNU Emacs 馃槢
move to README
Good idea.
@nwolfe if you wish to add anything to README - you're welcome to send pr 馃槃
I'm seeing a slight difference in font rendering compared to emacs-mac. Screenshot shows. Fonts are in emacs-plus rendered wider, all things being equal. Any idea why?

The screenshot on the left is emacs-mac.
Both use (set-face-attribute 'default nil :family "Hack") in init.el
Most helpful comment
Emacs Mac Port is GNU Emacs plus some additions for OS X (mostly related to GUI, AFAIK). These additions are made on the Emacs source level. So it's not really GNU Emacs anymore. Also you are tided to Emacs Mac Port version.
Emacs Plus is just plain GNU Emacs with some additions on formulae level (at least for now). Currently it only gives you an option to install Emacs with Spacemacs icon. And you are free to install Emacs 24 or Emacs 25 via this formulae (just like with plain
emacs).So basically, we switched from Emacs Mac Port recommendation to GNU Emacs. We just wanted to give users option to install Emacs with Spacemacs icon. Since we didn't want to confuse anyone with Spacemacs distribution of Emacs, we named it 'emacs-plus'.
Some useful references: