Homebrew で grep 2.18 入れるやつ

grep.rb

require 'formula'

class Grep < Formula
  url 'http://ftp.gnu.org/gnu/grep/grep-2.18.tar.xz'
  sha1 'fdb12580714966745635da7d9db55060f88db28b'
  version '2.18'

  depends_on 'pcre'

  def install
    system "./configure --prefix=#{prefix}"
    system "make install"
  end
end

brew install https://gist.githubusercontent.com/mitukiii/9186580/raw/grep.rb