launchctl-completion: import from homebrew/completions.

Formula/launchctl-completion.rb

@@ -0,0 +1,17 @@
+class LaunchctlCompletion < Formula
+  desc "Bash completion for Launchctl"
+  homepage "https://github.com/CamJN/launchctl-completion"
+  url "https://github.com/CamJN/launchctl-completion/archive/v1.0.tar.gz"
+  sha256 "b21c39031fa41576d695720b295dce57358c320964f25d19a427798d0f0df7a0"
+
+  bottle :unneeded
+
+  def install
+    bash_completion.install "launchctl-completion.sh" => "launchctl"
+  end
+
+  test do
+    assert_match "-F _launchctl",
+                 shell_output("bash -c 'source #{bash_completion}/launchctl && complete -p launchctl'")
+  end
+end