class ZshCompletions < Formula
  desc "Additional completion definitions for zsh"
  homepage "https://github.com/zsh-users/zsh-completions"
  url "https://github.com/zsh-users/zsh-completions/archive/0.17.0.tar.gz"
  sha256 "e1797e22e2bbbe50bf61f88db43216c0aef53713c84373bafddf6090b1fe8f68"

  head "https://github.com/zsh-users/zsh-completions.git"

  bottle :unneeded

  def install
    (share/"zsh-completions").install Dir["src/_*"]
  end

  def caveats
    <<-EOS.undent
    To activate these completions, add the following to your .zshrc:

      fpath=(#{HOMEBREW_PREFIX}/share/zsh-completions $fpath)

    You may also need to force rebuild `zcompdump`:

      rm -f ~/.zcompdump; compinit

    Additionally, if you receive "zsh compinit: insecure directories" warnings when attempting
    to load these completions, you may need to run this:

      chmod go-w '#{HOMEBREW_PREFIX}/share'
    EOS
  end

  test do
    (testpath/".zshrc").write <<-EOS.undent
      fpath=(#{HOMEBREW_PREFIX}/share/zsh-completions $fpath)
      autoload -U compinit
      compinit
    EOS
    system "/bin/zsh", "--login", "-i", "-c", "which _ack"
  end
end