 
     case argv do
       ["rebar", path | _] ->
-       install_from_path(:rebar, path, opts)
+        install_from_path(:rebar, path, opts)
+
       ["rebar3", path | _] ->
-       install_from_path(:rebar3, path, opts)
+        install_from_path(:rebar3, path, opts)
+
       [] ->
         install_from_s3(:rebar, @rebar2_list_url, @rebar2_escript_url, opts)
         install_from_s3(:rebar3, @rebar3_list_url, @rebar3_escript_url, opts)
+
       _ ->
-        Mix.raise "Invalid arguments given to mix local.rebar. " <>
-                  "To find out the proper call syntax run \"mix help local.rebar\""
+        Mix.raise(
+          "Invalid arguments given to mix local.rebar. " <>
+            "To find out the proper call syntax run \"mix help local.rebar\""
+        )
     end
   end
 

  end

  defp install_from_s3(manager, list_url, escript_url, opts) do
    hex_mirror = Mix.Hex.mirror
    list_url = hex_mirror <> list_url

    {elixir_version, rebar_version, sha512} =

          Please download the file above manually to your current directory and run:

              mix local.rebar #{manager} ./#{Path.basename(local)}
          """)
      end
    end

