--- a/src/Pure/proofterm.ML Thu Dec 07 10:52:48 2023 +0100
+++ b/src/Pure/proofterm.ML Thu Dec 07 10:54:57 2023 +0100
@@ -794,9 +794,9 @@
val n = length args;
fun term lev (Bound i) =
(if i<lev then raise Same.SAME (*var is locally bound*)
- else incr_boundvars lev (nth args (i-lev))
- handle General.Subscript => Bound (i-n)) (*loose: change it*)
- | term lev (Abs (a, T, t)) = Abs (a, T, term (lev+1) t)
+ else incr_boundvars lev (nth args (i - lev))
+ handle General.Subscript => Bound (i - n)) (*loose: change it*)
+ | term lev (Abs (a, T, t)) = Abs (a, T, term (lev + 1) t)
| term lev (t $ u) = (term lev t $ Same.commit (term lev) u
handle Same.SAME => t $ term lev u)
| term _ _ = raise Same.SAME;
@@ -804,7 +804,7 @@
fun proof lev (AbsP (a, t, p)) =
(AbsP (a, Same.map_option (term lev) t, Same.commit (proof lev) p)
handle Same.SAME => AbsP (a, t, proof lev p))
- | proof lev (Abst (a, T, p)) = Abst (a, T, proof (lev+1) p)
+ | proof lev (Abst (a, T, p)) = Abst (a, T, proof (lev + 1) p)
| proof lev (p %% q) = (proof lev p %% Same.commit (proof lev) q
handle Same.SAME => p %% proof lev q)
| proof lev (p % t) = (proof lev p % Option.map (Same.commit (term lev)) t
@@ -817,14 +817,14 @@
val n = length args;
fun proof Plev tlev (PBound i) =
(if i < Plev then raise Same.SAME (*var is locally bound*)
- else incr_pboundvars Plev tlev (nth args (i-Plev))
- handle General.Subscript => PBound (i-n) (*loose: change it*))
- | proof Plev tlev (AbsP (a, t, p)) = AbsP (a, t, proof (Plev+1) tlev p)
- | proof Plev tlev (Abst (a, T, p)) = Abst (a, T, proof Plev (tlev+1) p)
+ else incr_pboundvars Plev tlev (nth args (i - Plev))
+ handle General.Subscript => PBound (i - n) (*loose: change it*))
+ | proof Plev tlev (AbsP (a, t, p)) = AbsP (a, t, proof (Plev + 1) tlev p)
+ | proof Plev tlev (Abst (a, T, p)) = Abst (a, T, proof Plev (tlev + 1) p)
| proof Plev tlev (p %% q) = (proof Plev tlev p %% Same.commit (proof Plev tlev) q
handle Same.SAME => p %% proof Plev tlev q)
| proof Plev tlev (p % t) = proof Plev tlev p % t
- | proof _ _ _ = raise Same.SAME;
+ | proof _ _ _ = raise Same.SAME;
in if null args then prf else Same.commit (proof 0 0) prf end;