class Gawk < Formula
  desc "GNU awk utility"
  homepage "https://www.gnu.org/software/gawk/"
  url "https://ftp.gnu.org/gnu/gawk/gawk-4.2.1.tar.xz"
  mirror "https://ftpmirror.gnu.org/gawk/gawk-4.2.1.tar.xz"
  sha256 "d1119785e746d46a8209d28b2de404a57f983aa48670f4e225531d3bdc175551"
  revision 1

  bottle do
    sha256 "7bb0670da0f508d0cabcb053905b8b59d5aa8f9913b79d654b2e4ae005b5d838" => :mojave
    sha256 "b9a0b1d42c5434c062ea3f31c61a902f0e28111115c924e5fdba6c25fef4a2c7" => :high_sierra
  end

  depends_on "gettext"
  depends_on "mpfr"
  depends_on "readline"

  def install
    system "./configure", "--disable-debug",
                          "--disable-dependency-tracking",
                          "--prefix=#{prefix}",
                          "--without-libsigsegv-prefix"
    system "make"
    system "make", "check"
    system "make", "install"

    (libexec/"gnubin").install_symlink bin/"gawk" => "awk"
    (libexec/"gnuman/man1").install_symlink man1/"gawk.1" => "awk.1"
  end

  test do
    output = pipe_output("#{bin}/gawk '{ gsub(/Macro/, \"Home\"); print }' -", "Macrobrew")
    assert_equal "Homebrew", output.strip
  end
end