Release v1.4.4

Author: José Valim

CHANGELOG.md

@@ -109,6 +109,16 @@ You can now also install archives from Hex in this way. Since they are fetched a
 
 It is also possible to install escripts and archives by providing a Git/GitHub repo. See `mix help escript.install` and `mix help archive.install` for more details.
 
+## v1.4.4 (2017-05-15)
+
+This version includes changes that make Elixir fully compatible with Erlang OTP 20-rc.1.
+
+### 1. Bug fixes
+
+#### Elixir
+
+  * [Map] Fix regression on struct update syntax
+
 ## v1.4.3 (2017-05-15)
 
 This version includes changes that make Elixir fully compatible with Erlang OTP 20-rc.1.

VERSION

@@ -1 +1 @@
-1.4.3
+1.4.4

lib/elixir/src/elixir_map.erl

@@ -13,18 +13,8 @@ expand_map(Meta, Args, E) ->
   {{'%{}', Meta, EArgs}, EA}.
 
 expand_struct(Meta, Left, {'%{}', MapMeta, MapArgs}, #{context := Context} = E) ->
-  CleanArgs =
-    case lists:keytake('__struct__', 1, MapArgs) of
-      {value, _, ValueArgs} ->
-        elixir_errors:warn(?line(Meta), ?m(E, file),
-                           "key :__struct__ is ignored when building structs"),
-        ValueArgs;
-      false ->
-        MapArgs
-    end,
-
-  {[ELeft | EArgs], EE} = elixir_exp:expand_args([Left | CleanArgs], E),
-  ERight = {'%{}', MapMeta, EArgs},
+  CleanArgs = clean_struct_key_from_map_args(Meta, MapArgs, E),
+  {[ELeft, ERight], EE} = elixir_exp:expand_args([Left, {'%{}', MapMeta, CleanArgs}], E),
 
   case validate_struct(ELeft, Context) of
     true when is_atom(ELeft) ->
@@ -54,6 +44,20 @@ expand_struct(Meta, _Left, Right, E) ->
   compile_error(Meta, ?m(E, file), "expected struct to be followed by a map, got: ~ts",
                 ['Elixir.Macro':to_string(Right)]).
 
+clean_struct_key_from_map_args(Meta, [{'|', PipeMeta, [Left, MapAssocs]}], E) ->
+  [{'|', PipeMeta, [Left, clean_struct_key_from_map_assocs(Meta, MapAssocs, E)]}];
+clean_struct_key_from_map_args(Meta, MapAssocs, E) ->
+  clean_struct_key_from_map_assocs(Meta, MapAssocs, E).
+
+clean_struct_key_from_map_assocs(Meta, Assocs, E) ->
+  case lists:keytake('__struct__', 1, Assocs) of
+    {value, _, CleanAssocs} ->
+      elixir_errors:warn(?line(Meta), ?m(E, file), "key :__struct__ is ignored when using structs"),
+      CleanAssocs;
+    false ->
+      Assocs
+  end.
+
 validate_struct({'^', _, [{Var, _, Ctx}]}, match) when is_atom(Var), is_atom(Ctx) -> true;
 validate_struct({Var, _Meta, Ctx}, match) when is_atom(Var), is_atom(Ctx) -> true;
 validate_struct(Atom, _) when is_atom(Atom) -> true;

lib/elixir/test/elixir/kernel/warning_test.exs

@@ -781,6 +781,27 @@ defmodule Kernel.WarningTest do
     purge Sample
   end
 
+  defmodule User do
+    defstruct [:name]
+  end
+
+  test ":__struct__ is ignored when using structs" do
+    assert capture_err(fn ->
+      Code.eval_string """
+      assert %Kernel.WarningTest.User{__struct__: Ignored, name: "joe"} ==
+             %Kernel.WarningTest.User{name: "joe"}
+      """, [], __ENV__
+    end) =~ "key :__struct__ is ignored when using structs"
+
+    assert capture_err(fn ->
+      Code.eval_string """
+      user = %Kernel.WarningTest.User{name: "meg"}
+      assert %Kernel.WarningTest.User{user | __struct__: Ignored, name: "joe"} ==
+             %Kernel.WarningTest.User{__struct__: Kernel.WarningTest.User, name: "joe"}
+      """, [], __ENV__
+    end) =~ "key :__struct__ is ignored when using structs"
+  end
+
   defp purge(list) when is_list(list) do
     Enum.each list, &purge/1
   end

src/elixir.app.src

@@ -1,6 +1,6 @@
 {application, elixir,
 [{description, "elixir"},
- {vsn, "1.4.3"},
+ {vsn, "1.4.4"},
  {modules, [
 	elixir
   ]},