class Mg3a < Formula
  desc "Small Emacs-like editor inspired by mg with UTF8 support"
  homepage "http://www.bengtl.net/files/mg3a/"
  url "http://www.bengtl.net/files/mg3a/mg3a.161017.tar.gz"
  sha256 "e97951850f9755e5f754e46f5d198b9d99a5b55a2a67deb0b9159f22b4ff39be"

  bottle do
    cellar :any_skip_relocation
    sha256 "e257022f63f28ed08c7302fa1fd53ec1dd473280927b6cbea5a7c22e077c4ab2" => :sierra
    sha256 "dd3e30d9e1b1cf19e3ec54414a295b155d908dd30e76c728b53e91f72b43d1c2" => :el_capitan
    sha256 "f2f3e4ca89f9c90b57a47ecd7d5a29ab674da7bc9341fdc31b09a09bf99de372" => :yosemite
  end

  option "with-c-mode", "Include the original C mode"
  option "with-clike-mode", "Include the C mode that also handles Perl and Java"
  option "with-python-mode", "Include the Python mode"
  option "with-most", "Include c-like and python modes, user modes and user macros"
  option "with-all", "Include all fancy stuff"

  conflicts_with "mg", :because => "both install `mg`"

  def install
    if build.with?("all")
      mg3aopts = %w[-DALL]
    else
      mg3aopts = %w[-DDIRED -DPREFIXREGION -DUSER_MODES -DUSER_MACROS]
      mg3aopts << "-DLANGMODE_C" if build.with?("c-mode")
      mg3aopts << "-DLANGMODE_PYTHON" if build.with?("python-mode") || build.with?("most")
      mg3aopts << "-DLANGMODE_CLIKE" if build.with?("clike-mode") || build.with?("most")
    end

    system "make", "CDEFS=#{mg3aopts * " "}", "LIBS=-lncurses", "COPT=-O3"
    bin.install "mg"
    doc.install Dir["bl/dot.*"]
    doc.install Dir["README*"]
  end

  test do
    (testpath/"command.sh").write <<-EOS.undent
      #!/usr/bin/expect -f
      set timeout -1
      spawn #{bin}/mg
      match_max 100000
      send -- "\u0018\u0003"
      expect eof
    EOS
    (testpath/"command.sh").chmod 0755

    system testpath/"command.sh"
  end
end