5 files changed, 84 insertions, 3 deletions
diff --git a/lib/edoc/test/edoc_SUITE.erl b/lib/edoc/test/edoc_SUITE.erl
index c9c7811afb..c63660c8c0 100644
--- a/lib/edoc/test/edoc_SUITE.erl
+++ b/lib/edoc/test/edoc_SUITE.erl
@@ -22,12 +22,12 @@
 	 init_per_group/2,end_per_group/2]).
 
 %% Test cases
--export([app/1,appup/1,build_std/1,build_map_module/1]).
+-export([app/1,appup/1,build_std/1,build_map_module/1,otp_12008/1]).
 
 suite() -> [{ct_hooks,[ts_install_cth]}].
 
 all() -> 
-    [app,appup,build_std,build_map_module].
+    [app,appup,build_std,build_map_module,otp_12008].
 
 groups() -> 
     [].
@@ -77,3 +77,21 @@ build_map_module(Config) when is_list(Config) ->
     Filename = filename:join(DataDir, "map_module.erl"),
     ok = edoc:file(Filename, [{dir, PrivDir}]),
     ok.
+
+otp_12008(Config) when is_list(Config) ->
+    DataDir  = ?config(data_dir, Config),
+    PrivDir  = ?config(priv_dir, Config),
+    Un1 = filename:join(DataDir, "un1.erl"),
+    Un2 = filename:join(DataDir, "un2.erl"),
+    Un3 = filename:join(DataDir, "un3.erl"),
+    %% epp_dodger
+    Opts1 = [{dir, PrivDir}],
+    ok = edoc:files([Un1], Opts1),
+    ok = edoc:files([Un2], Opts1),
+    {'EXIT', error} = (catch edoc:files([Un3], Opts1)),
+    %% epp
+    Opts2 = [{preprocess, true}, {dir, PrivDir}],
+    ok = edoc:files([Un1], Opts2),
+    ok = edoc:files([Un2], Opts2),
+    {'EXIT', error} = (catch edoc:files([Un3], Opts2)),
+    ok.
diff --git a/lib/edoc/test/edoc_SUITE_data/map_module.erl b/lib/edoc/test/edoc_SUITE_data/map_module.erl
index 94ee7e6f26..f242721637 100644
--- a/lib/edoc/test/edoc_SUITE_data/map_module.erl
+++ b/lib/edoc/test/edoc_SUITE_data/map_module.erl
@@ -1,6 +1,6 @@
 -module(map_module).
 
--export([foo1/1,foo2/3]).
+-export([foo1/1,foo2/3,start_child/2]).
 
 %% @type wazzup() = integer()
 %% @type some_type() = map()
@@ -25,3 +25,43 @@ foo1(#{ a:= 1, b := V}) -> V.
     Map :: #{ get => 'value', 'value' => binary()}) -> binary().
 
 foo2(Type1, {a,#{ "a" := _}}, #{get := value, value := B}) when is_map(Type1) -> B.
+
+%% from supervisor 18.0
+
+-type child()    :: 'undefined' | pid().
+-type child_id() :: term().
+-type mfargs()   :: {M :: module(), F :: atom(), A :: [term()] | undefined}.
+-type modules()  :: [module()] | 'dynamic'.
+-type restart()  :: 'permanent' | 'transient' | 'temporary'.
+-type shutdown() :: 'brutal_kill' | timeout().
+-type worker()   :: 'worker' | 'supervisor'.
+-type sup_ref()  :: (Name :: atom())
+                  | {Name :: atom(), Node :: node()}
+                  | {'global', Name :: atom()}
+                  | {'via', Module :: module(), Name :: any()}
+                  | pid().
+-type child_spec() :: #{name => child_id(),     % mandatory
+			start => mfargs(),      % mandatory
+			restart => restart(),   % optional
+			shutdown => shutdown(), % optional
+			type => worker(),       % optional
+			modules => modules()}   % optional
+                    | {Id :: child_id(),
+                       StartFunc :: mfargs(),
+                       Restart :: restart(),
+                       Shutdown :: shutdown(),
+                       Type :: worker(),
+                       Modules :: modules()}.
+
+-type startchild_err() :: 'already_present'
+			| {'already_started', Child :: child()} | term().
+-type startchild_ret() :: {'ok', Child :: child()}
+                        | {'ok', Child :: child(), Info :: term()}
+			| {'error', startchild_err()}.
+
+
+-spec start_child(SupRef, ChildSpec) -> startchild_ret() when
+      SupRef :: sup_ref(),
+      ChildSpec :: child_spec() | (List :: [term()]).
+start_child(Supervisor, ChildSpec) ->
+    {Supervisor,ChildSpec}.
diff --git a/lib/edoc/test/edoc_SUITE_data/un1.erl b/lib/edoc/test/edoc_SUITE_data/un1.erl
new file mode 100644
index 0000000000..0c48e7f940
--- /dev/null
+++ b/lib/edoc/test/edoc_SUITE_data/un1.erl
@@ -0,0 +1,7 @@
+-module(un1).
+
+-export([t/0]).
+
+%% @doc F�pp
+t() ->
+    �rlig.
diff --git a/lib/edoc/test/edoc_SUITE_data/un2.erl b/lib/edoc/test/edoc_SUITE_data/un2.erl
new file mode 100644
index 0000000000..a6d13f4723
--- /dev/null
+++ b/lib/edoc/test/edoc_SUITE_data/un2.erl
@@ -0,0 +1,8 @@
+-module(un2).
+%% coding: latin-1
+
+-export([t/0]).
+
+%% @doc F�pp
+t() ->
+    �rlig.
diff --git a/lib/edoc/test/edoc_SUITE_data/un3.erl b/lib/edoc/test/edoc_SUITE_data/un3.erl
new file mode 100644
index 0000000000..fbe9591dce
--- /dev/null
+++ b/lib/edoc/test/edoc_SUITE_data/un3.erl
@@ -0,0 +1,8 @@
+-module(un3).
+%% coding: utf-8
+
+-export([t/0]).
+
+%% @doc F�pp
+t() ->
+    �rlig.