--- a/src/Pure/Isar/proof.ML Fri Mar 23 14:04:50 2018 +0100
+++ b/src/Pure/Isar/proof.ML Fri Mar 23 16:07:20 2018 +0100
@@ -1303,12 +1303,9 @@
fun future_terminal_proof proof1 proof2 done state =
if Goal.future_enabled 3 andalso not (is_relevant state) then
state |> future_proof (fn state' =>
- let
- val pos = Position.thread_data ();
- val props = Markup.command_timing :: (Markup.nameN, "by") :: Position.properties_of pos;
- in
+ let val pos = Position.thread_data () in
Execution.fork {name = "Proof.future_terminal_proof", pos = pos, pri = ~1}
- (fn () => ((), Timing.protocol props proof2 state'))
+ (fn () => ((), Timing.protocol "by" pos proof2 state'))
end) |> snd |> done
else proof1 state;