From 08f6bbd031b1e7e7ed90dddd321fc0ac4663d4e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Valim?= <jose.valim@dashbit.co>
Date: Fri, 18 Sep 2020 10:41:22 +0200
Subject: [PATCH] Align doc chunks return with EEP 48

---
 lib/elixir/lib/behaviour.ex       | 4 ++--
 lib/elixir/lib/code.ex            | 2 +-
 lib/elixir/lib/kernel/typespec.ex | 1 +
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/lib/elixir/lib/behaviour.ex b/lib/elixir/lib/behaviour.ex
index 4a09938aa9..25ab6e0c0c 100644
--- a/lib/elixir/lib/behaviour.ex
+++ b/lib/elixir/lib/behaviour.ex
@@ -111,9 +111,9 @@ defmodule Behaviour do
         end
       end
 
-      defp __behaviour__doc_value(:none), do: nil
-      defp __behaviour__doc_value(:hidden), do: false
       defp __behaviour__doc_value(%{"en" => doc}), do: doc
+      defp __behaviour__doc_value(:hidden), do: false
+      defp __behaviour__doc_value(_), do: nil
 
       import unquote(__MODULE__)
     end
diff --git a/lib/elixir/lib/code.ex b/lib/elixir/lib/code.ex
index e4cb2f7abf..4bd32b993c 100644
--- a/lib/elixir/lib/code.ex
+++ b/lib/elixir/lib/code.ex
@@ -1348,7 +1348,7 @@ defmodule Code do
           | {:error, :module_not_found | :chunk_not_found | {:invalid_chunk, binary}}
         when annotation: :erl_anno.anno(),
              beam_language: :elixir | :erlang | atom(),
-             doc_content: %{required(binary) => binary} | :none | :hidden,
+             doc_content: %{optional(binary) => binary} | :none | :hidden,
              doc_element:
                {{kind :: atom, function_name :: atom, arity}, annotation, signature, doc_content,
                 metadata},
diff --git a/lib/elixir/lib/kernel/typespec.ex b/lib/elixir/lib/kernel/typespec.ex
index 7f56b3cd9c..f28c3dbf53 100644
--- a/lib/elixir/lib/kernel/typespec.ex
+++ b/lib/elixir/lib/kernel/typespec.ex
@@ -23,6 +23,7 @@ defmodule Kernel.Typespec do
         for {{:type, name, arity}, _, _, doc, _} <- docs do
           case doc do
             %{"en" => doc_string} -> {{name, arity}, doc_string}
+            %{} -> {{name, arity}, nil}
             :none -> {{name, arity}, nil}
             # Hidden or unknown format are ignored
             _ -> {{name, arity}, false}