Remove invalid escaping of sigils, closes #10864

Author: josevalim

lib/elixir/lib/macro.ex

@@ -1087,8 +1087,6 @@ defmodule Macro do
           "\#{" <> to_string(arg, fun) <> "}"
 
         binary when is_binary(binary) ->
-          binary = inspect_no_limit(binary)
-          binary = binary_part(binary, 1, byte_size(binary) - 2)
           escape_sigil(binary, left)
       end)
 

lib/elixir/test/elixir/macro_test.exs

@@ -327,12 +327,12 @@ defmodule MacroTest do
 
     test "sigil call" do
       assert Macro.to_string(quote(do: ~r"123")) == ~S/~r"123"/
-      assert Macro.to_string(quote(do: ~r"\n123")) == ~S/~r"\\n123"/
-      assert Macro.to_string(quote(do: ~r"12\"3")) == ~S/~r"12\\"3"/
+      assert Macro.to_string(quote(do: ~r"\n123")) == ~S/~r"\n123"/
+      assert Macro.to_string(quote(do: ~r"12\"3")) == ~S/~r"12\"3"/
       assert Macro.to_string(quote(do: ~r/12\/3/u)) == ~S"~r/12\/3/u"
-      assert Macro.to_string(quote(do: ~r{\n123})) == ~S/~r{\\n123}/
+      assert Macro.to_string(quote(do: ~r{\n123})) == ~S/~r{\n123}/
       assert Macro.to_string(quote(do: ~r((1\)(2\)3))) == ~S/~r((1\)(2\)3)/
-      assert Macro.to_string(quote(do: ~r{\n1{1\}23})) == ~S/~r{\\n1{1\}23}/
+      assert Macro.to_string(quote(do: ~r{\n1{1\}23})) == ~S/~r{\n1{1\}23}/
       assert Macro.to_string(quote(do: ~r|12\|3|)) == ~S"~r|12\|3|"
 
       assert Macro.to_string(quote(do: ~r[1#{two}3])) == ~S/~r[1#{two}3]/