Do not allow deps names on mix deps.get

Closes #2507.

Author: ericmj

lib/mix/lib/mix/tasks/deps.get.ex

@@ -14,17 +14,12 @@ defmodule Mix.Tasks.Deps.Get do
   """
   def run(args) do
     Mix.Project.get! # Require the project to be available
-    {opts, rest, _} = OptionParser.parse(args, switches: [quiet: :boolean, only: :string])
+    {opts, _, _} = OptionParser.parse(args, switches: [quiet: :boolean, only: :string])
 
     # Fetch all deps by default unless --only is given
     fetch_opts = if only = opts[:only], do: [env: :"#{only}"], else: []
 
-    apps =
-      if rest != [] do
-        Mix.Dep.Fetcher.by_name(rest, %{}, Mix.Dep.Lock.read, fetch_opts)
-      else
-        Mix.Dep.Fetcher.all(%{}, Mix.Dep.Lock.read, fetch_opts)
-      end
+    apps = Mix.Dep.Fetcher.all(%{}, Mix.Dep.Lock.read, fetch_opts)
 
     if apps == [] && !opts[:quiet] do
       Mix.shell.info "All dependencies up to date"

lib/mix/lib/mix/tasks/deps.unlock.ex

@@ -12,7 +12,7 @@ defmodule Mix.Tasks.Deps.Unlock do
 
   def run(args) do
     Mix.Project.get! # Require the project to be available
-    {opts, args, _} = OptionParser.parse(args, switches: [unlock: :boolean, all: :boolean])
+    {opts, args, _} = OptionParser.parse(args, switches: [all: :boolean])
 
     cond do
       opts[:all] ->

lib/mix/lib/mix/utils.ex

@@ -11,7 +11,7 @@ defmodule Mix.Utils do
 
   Developers should only store entries in the
   `MIX_HOME` directory which are guaranteed to
-  work accross multiple Elixir versions, as it is
+  work across multiple Elixir versions, as it is
   not recommended to swap the `MIX_HOME` directory
   as configuration and other important data may be
   stored there.
@@ -317,13 +317,13 @@ defmodule Mix.Utils do
   end
 
   defp do_symlink_or_copy(source, target) do
-   
+
     # relative symbolic links on windows are broken
     source_path = case :os.type do
       {:win32, _} -> source
       _ -> make_relative_path(source, target)
     end
-    
+
     case :file.make_symlink(source_path, target) do
       :ok -> :ok
       {:error, _} -> {:ok, File.cp_r!(source, target)}

lib/mix/test/mix/tasks/deps_test.exs

@@ -295,7 +295,7 @@ defmodule Mix.Tasks.DepsTest do
 
     in_fixture "deps_status", fn ->
       assert_raise Mix.Error, ~r/Unknown dependency invalid for environment dev/, fn ->
-        Mix.Tasks.Deps.Get.run ["invalid"]
+        Mix.Tasks.Deps.Update.run ["invalid"]
       end
     end
   end