brew tap red/red # mandatory: to add red/Homebrew-red to your local install
brew tap # optional: to check that red/Homebrew-red is in the list
brew update # optional: to update brew
brew cask search red-latest # optional: to check that red-latest is
brew cask install red-latest # mandatory: to install red-latest as red binary
To reinstall latest Red:
brew cask reinstall red-latest
Switching to the stable red version:
brew cask uninstall red-latest
brew cask install red