SandS

• Space → Space
• Space+A → Shift+A, Space+B → Shift+B
• Control+Space → Control+Space, Alt+Space → Alt+Space

Install

download SandS.app.zip

Tested on

• OSX El Capitan 10.11.6
• macOS Sierra 10.12.3

Warnings

Emacs.app

SandS doesn't work with https://github.com/railwaycat/homebrew-emacsmacport (in GUI mode). #3

Please use https://github.com/d12frosted/homebrew-emacs-plus.