How to install/configure ispell for emacs under MacOS?

  1. Install brew
    /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
    answer the current user’s password and install is automatically
  2. Install ispell
    brew install ispell --with-lang-en
  3. Configure the .emacs
    (setq ispell-program-name "/usr/local/bin/ispell")
  4. Use M-x ispell to call it

Reference: http://unix.stackexchange.com/questions/38916/how-do-i-configure-emacs-to-use-ispell-on-mac-os-x