open-completion: import from homebrew/completions.

Formula/open-completion.rb

@@ -0,0 +1,18 @@
+class OpenCompletion < Formula
+  desc "Bash completion for open"
+  homepage "https://github.com/moshen/open-bash-completion"
+  url "https://github.com/moshen/open-bash-completion/archive/v1.0.3.tar.gz"
+  sha256 "e7ed931d49d2c9ed5bc4fcad1b60a8c4cb6d4bca86948cb54e6689f313a2029e"
+  head "https://github.com/moshen/open-bash-completion.git"
+
+  bottle :unneeded
+
+  def install
+    bash_completion.install "open"
+  end
+
+  test do
+    assert_match "-F _open",
+      shell_output("source #{bash_completion}/open && complete -p open")
+  end
+end