diff options
| -rw-r--r-- | tactics/tactics.ml | 4 | ||||
| -rw-r--r-- | theories/Program/Wf.v | 2 |
2 files changed, 4 insertions, 2 deletions
diff --git a/tactics/tactics.ml b/tactics/tactics.ml index a2275b08f..c76aeb4a8 100644 --- a/tactics/tactics.ml +++ b/tactics/tactics.ml @@ -1031,6 +1031,8 @@ let map_induction_arg f = function (* tactic "cut" (actually modus ponens) *) (****************************************) +let normalize_cut = false + let cut c = Proofview.Goal.enter { enter = begin fun gl -> let env = Proofview.Goal.env gl in @@ -1049,7 +1051,7 @@ let cut c = if is_sort then let id = next_name_away_with_default "H" Anonymous (Tacmach.New.pf_ids_of_hyps gl) in (** Backward compat: normalize [c]. *) - let c = local_strong whd_betaiota sigma c in + let c = if normalize_cut then local_strong whd_betaiota sigma c else c in Proofview.Refine.refine ~unsafe:true { run = begin fun h -> let Sigma (f, h, p) = Evarutil.new_evar ~principal:true env h (mkArrow c (Vars.lift 1 concl)) in let Sigma (x, h, q) = Evarutil.new_evar env h c in diff --git a/theories/Program/Wf.v b/theories/Program/Wf.v index d89919b0a..6e5919b34 100644 --- a/theories/Program/Wf.v +++ b/theories/Program/Wf.v @@ -89,7 +89,7 @@ Section Measure_well_founded. Lemma measure_wf: well_founded MR. Proof with auto. unfold well_founded. - cut (forall a: M, (fun mm: M => forall a0: T, m a0 = mm -> Acc MR a0) a). + cut (forall (a: M) (a0: T), m a0 = a -> Acc MR a0). intros. apply (H (m a))... apply (@well_founded_ind M R wf (fun mm => forall a, m a = mm -> Acc MR a)). |