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(* -*- mode: coq; coq-prog-args: ("-vos") -*- *)
Set Default Proof Using "Type".
Section foo.
Context (A:Type).
Definition x : option A.
(* this can get printed with -vos since without "Proof." there's no Proof
using, even with a default annotation. *)
idtac "creating x without [Proof.]".
exact None.
Qed.
End foo.
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