Building Emacs on OS X using homebrew

I’ve recently switched to using Homebrew as my source for Emacs on OS X  after seeing this blog post by Philip Ingram.

It’s a simple way to install a current Emacs once or twice a year. I don’t use beta versions or other pre-release versions on “productivity” machines, only released versions. My editor is too important a tool for me to risk using pre-release versions.