From efc9e663fedbfe31e089fe65de9810ad0182e933 Mon Sep 17 00:00:00 2001
From: Andrea Leopardi <an.leopardi@gmail.com>
Date: Sat, 20 May 2017 16:25:04 +0200
Subject: [PATCH] Fix callback signature when arguments are typed as functions

---
 lib/ex_doc/retriever.ex | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/ex_doc/retriever.ex b/lib/ex_doc/retriever.ex
index 5525d1f30..6b713e106 100644
--- a/lib/ex_doc/retriever.ex
+++ b/lib/ex_doc/retriever.ex
@@ -369,6 +369,8 @@ defmodule ExDoc.Retriever do
 
   defp to_var({name, meta, _}, _) when is_atom(name),
     do: {name, meta, nil}
+  defp to_var([{:->, _, _} | _], _),
+    do: {:function, [], nil}
   defp to_var({:<<>>, _, _}, _),
     do: {:binary, [], nil}
   defp to_var({:%{}, _, _}, _),