(* Former open goals in nested proofs were lost *)
(* This used to fail with "Incorrect number of goals (expected 1 tactic)." *)
Inductive foo := a | b | c. Goal foo -> foo. intro x. simple refine (match x with
| a => _
| b => ltac:(exact b)
| c => _ end); [exact a|exact c]. Abort.
(* This used to leave the goal on the shelf and fails at reflexivity *)
Goal (True/\0=0 -> True) -> True. intro f.
refine
(f ltac:(split; only 1:exact I)). reflexivity. Qed.
(* The "Unshelve" used to not see the explicitly "shelved" goal *)
Lemma f (b:comparison) : b=b.
refine (match b with
Eq => ltac:(shelve)
| Lt => ltac:(give_up)
| Gt => _ end). exact (eq_refl Gt).
Unshelve. exact (eq_refl Eq).
Fail auto. (* Check that there are no more regular subgoals *) Admitted.
(* The "Unshelve" used to not see the explicitly "shelved" goal *)
Lemma f2 (b:comparison) : b=b.
refine (match b with
Eq => ltac:(shelve)
| Lt => ltac:(give_up)
| Gt => _ end).
Unshelve. (* Note: Unshelve puts goals at the end *) exact (eq_refl Gt). exact (eq_refl Eq).
Fail auto. (* Check that there are no more regular subgoals *) Admitted.
(* The "unshelve" used to not see the explicitly "shelved" goal *)
Lemma f3 (b:comparison) : b=b.
unshelve refine (match b with
Eq => ltac:(shelve)
| Lt => ltac:(give_up)
| Gt => _ end). (* Note: unshelve puts goals at the beginning *) exact (eq_refl Eq). exact (eq_refl Gt).
Fail auto. (* Check that there are no more regular subgoals *) Admitted.
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