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src/Pure/goal.ML
changeset 29122 b3bae49a013a
parent 29088 95a239a5e055
child 29124 ce6f21913e54 
--- a/src/Pure/goal.ML	Tue Dec 16 16:25:19 2008 +0100
+++ b/src/Pure/goal.ML	Tue Dec 16 16:25:19 2008 +0100
@@ -179,7 +179,7 @@
     val res =
       if immediate orelse #maxidx (Thm.rep_cterm stmt) >= 0 orelse not (Future.enabled ())
       then result ()
-      else future_result ctxt' (Future.fork_background result) (Thm.term_of stmt);
+      else future_result ctxt' (Future.fork_pri ~1 result) (Thm.term_of stmt);
   in
     Conjunction.elim_balanced (length props) res
     |> map (Assumption.export false ctxt' ctxt)
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