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-rw-r--r--lib/options.ml2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/options.ml b/lib/options.ml
index c6b9621211..3459279bb1 100644
--- a/lib/options.ml
+++ b/lib/options.ml
@@ -73,6 +73,8 @@ let silently f x =
let if_silent f x = if !silent then f x
let if_verbose f x = if not !silent then f x
+let hash_cons_proofs = ref true
+
(* The number of printed hypothesis in a goal *)
let print_hyps_limit = ref (None : int option)