Use bare double underscores instead of atoms

test/blanks_test.exs

@@ -2,7 +2,7 @@ defmodule BlanksTest do
   use ExUnit.Case, async: true
 
   test "simple replacement" do
-    ast = quote do: 1 + :__
+    ast = quote do: 1 + __
 
     mangled = Blanks.replace(ast, 37)
     assert {:+, [context: BlanksTest, import: Kernel], [1, 37]} == mangled
@@ -29,25 +29,25 @@ defmodule BlanksTest do
   end
 
   test "complex example" do
-    ast = [do: {:assert, [line: 5], [{:==, [line: 5], [true, :__]}]}]
+    ast = [do: {:assert, [line: 5], [{:==, [line: 5], [true, {:__, [], __MODULE__}]}]}]
 
     assert [do: {:assert, [line: 5], [{:==, [line: 5], [true, true]}]}] == Blanks.replace(ast, true)
   end
 
   test "multiple arguments" do
-    ast = [do: {:assert, [line: 5], [{:==, [line: 5], [:__, :__]}]}]
+    ast = [do: {:assert, [line: 5], [{:==, [line: 5], [{:__, [], __MODULE__}, {:__, [], __MODULE__}]}]}]
 
     assert [do: {:assert, [line: 5], [{:==, [line: 5], [true, false]}]}] == Blanks.replace(ast, [true, false])
   end
 
   test "counts simple blanks" do
-    ast = quote do: 1 + :__
+    ast = quote do: 1 + __
 
     assert Blanks.count(ast) == 1
   end
 
   test "counts multiple blanks" do
-    ast = [do: {:assert, [line: 5], [{:==, [line: 5], [:__, :__]}]}]
+    ast = [do: {:assert, [line: 5], [{:==, [line: 5], [{:__, [], __MODULE__}, {:__, __MODULE__}]}]}]
 
     assert Blanks.count(ast) == 2
   end