if which brew >/dev/null 2>&1; then
  if [ -f `brew --prefix`/etc/bash_completion ]; then
    . `brew --prefix`/etc/bash_completion
  fi

  if [ -f `brew --prefix`/Library/Contributions/brew_bash_completion.sh ]; then
    . `brew --prefix`/Library/Contributions/brew_bash_completion.sh
  fi
fi