Add reply([Reply])

3 files changed, 15 insertions, 7 deletions

diff --git a/lib/stdlib/doc/src/gen_statem.xml b/lib/stdlib/doc/src/gen_statem.xml
index f66f399137..5f9ec6736e 100644
--- a/lib/stdlib/doc/src/gen_statem.xml
+++ b/lib/stdlib/doc/src/gen_statem.xml
@@ -892,7 +892,10 @@ erlang:'!'            -----> Module:StateName/5
 	  </seealso> argument to the
 	  <seealso marker="#state_function">state function</seealso>.
 	  <c><anno>Client</anno></c> and <c><anno>Reply</anno></c>
-	  an also be specified using <c><anno>ReplyOperation</anno></c>.
+	  can also be specified using a
+	  <seealso marker="#type-reply_operation">
+	    <c>reply_operation()</c>
+	  </seealso> and multiple replies with a list of them.
 	</p>
 	<note>
 	  <p>A reply sent with this function will not be visible
diff --git a/lib/stdlib/src/gen_statem.erl b/lib/stdlib/src/gen_statem.erl
index 3da4443f13..8aa8afd091 100644
--- a/lib/stdlib/src/gen_statem.erl
+++ b/lib/stdlib/src/gen_statem.erl
@@ -389,9 +389,12 @@ call(ServerRef, Request, Timeout) ->
     end.
 
 %% Reply from a state machine callback to whom awaits in call/2
--spec reply(ReplyOperation :: reply_operation()) -> ok.
+-spec reply([reply_operation()] | reply_operation()) -> ok.
 reply({reply,{_To,_Tag}=Client,Reply}) ->
-    reply(Client, Reply).
+    reply(Client, Reply);
+reply(Replies) when is_list(Replies) ->
+    [reply(Reply) || Reply <- Replies],
+    ok.
 %%
 -spec reply(Client :: client(), Reply :: term()) -> ok.
 reply({To,Tag}, Reply) ->
diff --git a/lib/stdlib/test/gen_statem_SUITE.erl b/lib/stdlib/test/gen_statem_SUITE.erl
index 92dc59e843..4ac4acd189 100644
--- a/lib/stdlib/test/gen_statem_SUITE.erl
+++ b/lib/stdlib/test/gen_statem_SUITE.erl
@@ -1153,7 +1153,8 @@ idle(cast, {connect,Pid}, _, _, Data) ->
     Pid ! accept,
     {next_state,wfor_conf,Data};
 idle({call,From}, connect, _, _, Data) ->
-    {next_state,wfor_conf,Data,[{reply,From,accept}]};
+    gen_statem:reply(From, accept),
+    {next_state,wfor_conf,Data};
 idle(cast, badreturn, _, _, _Data) ->
     badreturn;
 idle({call,_From}, badreturn, _, _, _Data) ->
@@ -1161,7 +1162,8 @@ idle({call,_From}, badreturn, _, _, _Data) ->
 idle({call,From}, {delayed_answer,T}, _, _, Data) ->
     receive
     after T ->
-	    throw({keep_state,Data,{reply,From,delayed}})
+	    gen_statem:reply({reply,From,delayed}),
+	    throw({keep_state,Data})
     end;
 idle({call,From}, {timeout,Time}, _, State, _Data) ->
     {next_state,timeout,{From,Time},
@@ -1200,8 +1202,8 @@ timeout2(_, _, _, State, Data) ->
     {next_state,State,Data}.
 
 timeout3(info, {timeout,TRef2,Result}, _, _, {From,TRef2}) ->
-    {next_state,idle,state,
-     [{reply,From,Result}]};
+    gen_statem:reply([{reply,From,Result}]),
+    {next_state,idle,state};
 timeout3(_, _, _, State, Data) ->
     {next_state,State,Data}.