Remove spaces between "fn" and "(" (#4747)

lib/elixir/lib/keyword.ex

@@ -104,7 +104,7 @@ defmodule Keyword do
 
   ## Examples
 
-      iex> Keyword.new([:a, :b], fn (x) -> {x, x} end)
+      iex> Keyword.new([:a, :b], fn(x) -> {x, x} end)
       [a: :a, b: :b]
 
   """

lib/elixir/lib/list.ex

@@ -117,10 +117,10 @@ defmodule List do
 
   ## Examples
 
-      iex> List.foldl([5, 5], 10, fn (x, acc) -> x + acc end)
+      iex> List.foldl([5, 5], 10, fn(x, acc) -> x + acc end)
       20
 
-      iex> List.foldl([1, 2, 3, 4], 0, fn (x, acc) -> x - acc end)
+      iex> List.foldl([1, 2, 3, 4], 0, fn(x, acc) -> x - acc end)
       2
 
   """
@@ -135,7 +135,7 @@ defmodule List do
 
   ## Examples
 
-      iex> List.foldr([1, 2, 3, 4], 0, fn (x, acc) -> x - acc end)
+      iex> List.foldr([1, 2, 3, 4], 0, fn(x, acc) -> x - acc end)
       -2
 
   """

lib/elixir/lib/stream.ex

@@ -430,7 +430,7 @@ defmodule Stream do
   """
   @spec interval(non_neg_integer) :: Enumerable.t
   def interval(n) do
-    unfold 0, fn (count) ->
+    unfold 0, fn(count) ->
       :timer.sleep(n)
       {count, count + 1}
     end

lib/elixir/test/elixir/enum_test.exs

@@ -249,7 +249,7 @@ defmodule EnumTest do
     assert Enum.join(["", "", 1, 2, "", 3, "", "\n"], ";") == ";;1;2;;3;;\n"
     assert Enum.join([""]) == ""
 
-    assert Enum.join(fn (acc, _) -> acc end, ".") == ""
+    assert Enum.join(fn(acc, _) -> acc end, ".") == ""
   end
 
   test "map/2" do
@@ -263,7 +263,7 @@ defmodule EnumTest do
     assert Enum.map_join([1, 2, 3], &(&1 * 2)) == "246"
     assert Enum.map_join(["", "", 1, 2, "", 3, "", "\n"], ";", &(&1)) == ";;1;2;;3;;\n"
     assert Enum.map_join([""], "", &(&1)) == ""
-    assert Enum.map_join(fn (acc, _) -> acc end, ".", &(&1 + 0)) == ""
+    assert Enum.map_join(fn(acc, _) -> acc end, ".", &(&1 + 0)) == ""
   end
 
   test "map_reduce/3" do

lib/elixir/test/erlang/function_test.erl

@@ -49,9 +49,9 @@ function_parens_test() ->
   {1, _} = eval("(fn(1) -> 1 end).(1)"),
   {3, _} = eval("(fn(1, 2) -> 3 end).(1, 2)"),
 
-  {0, _} = eval("(fn () -> 0 end).()"),
-  {1, _} = eval("(fn (1) -> 1 end).(1)"),
-  {3, _} = eval("(fn (1, 2) -> 3 end).(1, 2)").
+  {0, _} = eval("(fn() -> 0 end).()"),
+  {1, _} = eval("(fn(1) -> 1 end).(1)"),
+  {3, _} = eval("(fn(1, 2) -> 3 end).(1, 2)").
 
 %% Function calls