diff --git a/stage0/src/Lean/Meta/GeneralizeTelescope.lean b/stage0/src/Lean/Meta/GeneralizeTelescope.lean
index 111a85d77c..073295cb9c 100644
--- a/stage0/src/Lean/Meta/GeneralizeTelescope.lean
+++ b/stage0/src/Lean/Meta/GeneralizeTelescope.lean
@@ -28,25 +28,25 @@ partial def updateTypes (e eNew : Expr) (entries : Array Entry) (i : Nat) : Meta
   else
     pure entries
 
-partial def generalizeTelescopeAux {α} (prefixForNewVars : Name) (k : Array Expr → MetaM α)
-    (entries : Array Entry) (i : Nat) (nextVarIdx : Nat) (fvars : Array Expr) : MetaM α := do
+partial def generalizeTelescopeAux {α} (k : Array Expr → MetaM α)
+    (entries : Array Entry) (i : Nat) (fvars : Array Expr) : MetaM α := do
   if h : i < entries.size then
-    let replace (e : Expr) (type : Expr) : MetaM α := do
-      let userName := prefixForNewVars.appendIndexAfter nextVarIdx
+    let replace (baseUserName : Name) (e : Expr) (type : Expr) : MetaM α := do
+      let userName ← mkFreshUserName baseUserName
       withLocalDeclD userName type fun x => do
         entries ← updateTypes e x entries (i+1)
-        generalizeTelescopeAux prefixForNewVars k entries (i+1) (nextVarIdx+1) (fvars.push x)
+        generalizeTelescopeAux k entries (i+1) (fvars.push x)
     match entries.get ⟨i, h⟩ with
     | ⟨e@(Expr.fvar fvarId _), type, false⟩ =>
       let localDecl ← getLocalDecl fvarId
       match localDecl with
-      | LocalDecl.cdecl .. => generalizeTelescopeAux prefixForNewVars k entries (i+1) nextVarIdx (fvars.push e)
-      | LocalDecl.ldecl .. => replace e type
+      | LocalDecl.cdecl .. => generalizeTelescopeAux k entries (i+1) (fvars.push e)
+      | LocalDecl.ldecl .. => replace localDecl.userName e type
     | ⟨e, type, modified⟩ =>
       if modified then
         unless (← isTypeCorrect type) do
           throwError! "failed to create telescope generalizing {entries.map Entry.expr}"
-      replace e type
+      replace `x e type
   else
     k fvars
 
@@ -71,25 +71,23 @@ open GeneralizeTelescope
   Moreover, for any type correct lambda abstraction `f` constructed using `mkForall #[x_1, ..., x_n] ...`,
   The application `f e_1 ... e_n` is also type correct.
 
-  The parameter `prefixForNewVars` is used to create new user facing names for the (new) variables `x_i`.
-
   The `kabstract` method is used to "locate" and abstract forward dependencies.
   That is, an occurrence of `e_i` in the of `e_j` for `j > i`.
 
   The method checks whether the abstract types `A_i` are type correct. Here is an example
   where `generalizeTelescope` fails to create the telescope `x_1 ... x_n`.
   Assume the local context contains `(n : Nat := 10) (xs : Vec Nat n) (ys : Vec Nat 10) (h : xs = ys)`.
-  Then, assume we invoke `generalizeTelescope` with `es := #[10, xs, ys, h]` and `prefixForNewVars := aux`.
+  Then, assume we invoke `generalizeTelescope` with `es := #[10, xs, ys, h]`
   A type error is detected when processing `h`'s type. At this point, the method had successfully produced
   ```
-    (aux_1 : Nat) (xs : Vec Nat n) (aux_2 : Vec Nat aux_1)
+    (x_1 : Nat) (xs : Vec Nat n) (x_2 : Vec Nat x_1)
   ```
-  and the type for the new variable abstracting `h` is `xs = aux_2` which is not type correct. -/
-def generalizeTelescope {α} (es : Array Expr) (prefixForNewVars : Name) (k : Array Expr → MetaM α) : MetaM α := do
+  and the type for the new variable abstracting `h` is `xs = x_2` which is not type correct. -/
+def generalizeTelescope {α} (es : Array Expr) (k : Array Expr → MetaM α) : MetaM α := do
   let es ← es.mapM fun e => do
     let type ← inferType e
     let type ← instantiateMVars type
     pure { expr := e, type := type, modified := false : Entry }
-  generalizeTelescopeAux prefixForNewVars k es 0 1 #[]
+  generalizeTelescopeAux k es 0 #[]
 
 end Lean.Meta
diff --git a/stage0/src/Lean/Meta/Tactic/Rewrite.lean b/stage0/src/Lean/Meta/Tactic/Rewrite.lean
index e73d9fc0ea..dd9b2d68aa 100644
--- a/stage0/src/Lean/Meta/Tactic/Rewrite.lean
+++ b/stage0/src/Lean/Meta/Tactic/Rewrite.lean
@@ -4,6 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Leonardo de Moura
 -/
 import Lean.Meta.AppBuilder
+import Lean.Meta.MatchUtil
 import Lean.Meta.KAbstract
 import Lean.Meta.Check
 import Lean.Meta.Tactic.Apply
@@ -21,9 +22,9 @@ def rewrite (mvarId : MVarId) (e : Expr) (heq : Expr) (symm : Bool := false) (oc
     let heqType ← inferType heq
     let (newMVars, binderInfos, heqType) ← forallMetaTelescopeReducing heqType
     let heq := mkAppN heq newMVars
-    let cont (heq heqType : Expr) : MetaM RewriteResult :=
-      match heqType.eq? with
-      | none => throwTacticEx `rewrite mvarId msg!"equality of iff proof expected{indentExpr heqType}"
+    let cont (heq heqType : Expr) : MetaM RewriteResult := do
+      match (← matchEq? heqType) with
+      | none => throwTacticEx `rewrite mvarId msg!"equality or iff proof expected{indentExpr heqType}"
       | some (α, lhs, rhs) =>
         let cont (heq heqType lhs rhs : Expr) : MetaM RewriteResult := do
           if lhs.getAppFn.isMVar then
diff --git a/stage0/src/Lean/Parser/Do.lean b/stage0/src/Lean/Parser/Do.lean
index bf44893d53..608fcef678 100644
--- a/stage0/src/Lean/Parser/Do.lean
+++ b/stage0/src/Lean/Parser/Do.lean
@@ -23,7 +23,7 @@ def doSeqBracketed := parser! "{" >> withoutPosition (many1 (group (doElemParser
 def doSeq          := doSeqBracketed <|> doSeqIndent
 
 def notFollowedByRedefinedTermToken :=
-  notFollowedBy ("if" <|> "match" <|> "let" <|> "have" <|> "do" <|> "dbgTrace!" <|> "assert!") "token at 'do' element"
+  notFollowedBy ("if" <|> "match" <|> "let" <|> "have" <|> "do" <|> "dbgTrace!" <|> "assert!" <|> "for" <|> "unless" <|> "return" <|> "try") "token at 'do' element"
 
 @[builtinDoElemParser] def doLet      := parser! "let " >> letDecl
 @[builtinDoElemParser] def doLetRec   := parser! group ("let " >> nonReservedSymbol "rec ") >> letRecDecls
@@ -99,6 +99,12 @@ parser is succeeding.
 
 @[builtinTermParser] def doElem.quot : Parser := parser! "`(doElem|" >> toggleInsideQuot doElemParser >> ")"
 
+/- macros for using `unless`, `for`, `try`, `return` as terms. They expand into `do unless ...`, `do for ...`, `do try ...`, and `do return ...` -/
+@[builtinTermParser] def termUnless := parser! "unless " >> withForbidden "do" termParser >> "do " >> doSeq
+@[builtinTermParser] def termFor    := parser! "for " >> termParser >> " in " >> withForbidden "do" termParser >> "do " >> doSeq
+@[builtinTermParser] def termTry    := parser! "try " >> doSeq >> many (doCatch <|> doCatchMatch) >> optional doFinally
+@[builtinTermParser] def termReturn := parser!:leadPrec withPosition ("return " >> optional (checkLineEq >> termParser))
+
 end Term
 end Parser
 end Lean
diff --git a/stage0/stdlib/Lean/Meta/GeneralizeTelescope.c b/stage0/stdlib/Lean/Meta/GeneralizeTelescope.c
index 8ea1338524..50d766c3cb 100644
--- a/stage0/stdlib/Lean/Meta/GeneralizeTelescope.c
+++ b/stage0/stdlib/Lean/Meta/GeneralizeTelescope.c
@@ -16,6 +16,7 @@ extern "C" {
 size_t l_USize_add(size_t, size_t);
 lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux_match__2(lean_object*);
 lean_object* l_Lean_stringToMessageData(lean_object*);
+lean_object* l_Lean_LocalDecl_userName(lean_object*);
 lean_object* l_Lean_Meta_withLocalDecl___at_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___spec__1___rarg___boxed(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* lean_array_uget(lean_object*, size_t);
 lean_object* l_Array_mapMUnsafe_map___at_Lean_Meta_generalizeTelescope___spec__1(size_t, size_t, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
@@ -36,12 +37,12 @@ lean_object* lean_nat_add(lean_object*, lean_object*);
 lean_object* l_Lean_throwError___at_Lean_Meta_getMVarDecl___spec__1___rarg(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___closed__1;
 lean_object* lean_array_fget(lean_object*, lean_object*);
+lean_object* l___private_Lean_CoreM_0__Lean_Core_mkFreshNameImp(lean_object*, lean_object*, lean_object*, lean_object*);
 uint8_t l_Lean_Occurrences_beq(lean_object*, lean_object*);
 lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___closed__2;
 lean_object* l_Array_mapMUnsafe_map___at_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___spec__2(size_t, size_t, lean_object*);
-lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* lean_array_fset(lean_object*, lean_object*, lean_object*);
-lean_object* l_Lean_Name_appendIndexAfter(lean_object*, lean_object*);
 lean_object* lean_st_mk_ref(lean_object*, lean_object*);
 lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux_match__1___rarg(lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Meta_generalizeTelescope___rarg___boxed__const__1;
@@ -53,9 +54,9 @@ lean_object* l_Lean_Meta_GeneralizeTelescope_updateTypes_match__1___rarg(lean_ob
 lean_object* l___private_Lean_HeadIndex_0__Lean_Expr_headNumArgsAux(lean_object*, lean_object*);
 lean_object* l_Lean_Meta_getLocalDecl___at_Lean_Meta_getFVarLocalDecl___spec__1(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 extern lean_object* l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
-lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Meta_GeneralizeTelescope_updateTypes(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
-lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1___boxed(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1___boxed(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Meta_kabstract_visit(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 uint8_t l_Lean_Expr_isFVar(lean_object*);
 lean_object* l_Lean_Meta_GeneralizeTelescope_updateTypes___boxed(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
@@ -68,15 +69,16 @@ lean_object* l_Lean_Meta_kabstract___at_Lean_Meta_GeneralizeTelescope_updateType
 extern lean_object* l_Lean_mkOptionalNode___closed__2;
 lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux_match__1(lean_object*);
 lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux_match__2___rarg(lean_object*, lean_object*, lean_object*);
-lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Meta_kabstract___at_Lean_Meta_GeneralizeTelescope_updateTypes___spec__1(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Array_mapMUnsafe_map___at_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___spec__2___boxed(lean_object*, lean_object*, lean_object*);
 lean_object* l_unsafeCast(lean_object*, lean_object*, lean_object*);
-lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2___boxed(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2___boxed(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Meta_GeneralizeTelescope_updateTypes_match__1(lean_object*);
-lean_object* l_Lean_Meta_generalizeTelescope___rarg(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Meta_generalizeTelescope___rarg(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux(lean_object*);
 uint8_t lean_nat_dec_lt(lean_object*, lean_object*);
+extern lean_object* l_Lean_Meta_mkArrow___rarg___closed__2;
 lean_object* l_Lean_Meta_GeneralizeTelescope_updateTypes_match__1___rarg(lean_object* x_1, lean_object* x_2) {
 _start:
 {
@@ -909,82 +911,82 @@ goto _start;
 }
 }
 }
-lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7, lean_object* x_8, lean_object* x_9, lean_object* x_10, lean_object* x_11, lean_object* x_12, lean_object* x_13) {
+lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7, lean_object* x_8, lean_object* x_9, lean_object* x_10, lean_object* x_11) {
 _start:
 {
-lean_object* x_14; lean_object* x_15; lean_object* x_16; 
-x_14 = lean_unsigned_to_nat(1u);
-x_15 = lean_nat_add(x_1, x_14);
-lean_inc(x_12);
-lean_inc(x_11);
+lean_object* x_12; lean_object* x_13; lean_object* x_14; 
+x_12 = lean_unsigned_to_nat(1u);
+x_13 = lean_nat_add(x_1, x_12);
 lean_inc(x_10);
 lean_inc(x_9);
-lean_inc(x_15);
-x_16 = l_Lean_Meta_GeneralizeTelescope_updateTypes(x_2, x_8, x_3, x_15, x_9, x_10, x_11, x_12, x_13);
-if (lean_obj_tag(x_16) == 0)
+lean_inc(x_8);
+lean_inc(x_7);
+lean_inc(x_13);
+x_14 = l_Lean_Meta_GeneralizeTelescope_updateTypes(x_2, x_6, x_3, x_13, x_7, x_8, x_9, x_10, x_11);
+if (lean_obj_tag(x_14) == 0)
 {
-lean_object* x_17; lean_object* x_18; lean_object* x_19; lean_object* x_20; lean_object* x_21; 
-x_17 = lean_ctor_get(x_16, 0);
-lean_inc(x_17);
-x_18 = lean_ctor_get(x_16, 1);
-lean_inc(x_18);
-lean_dec(x_16);
-x_19 = lean_nat_add(x_4, x_14);
-x_20 = lean_array_push(x_5, x_8);
-x_21 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg(x_6, x_7, x_17, x_15, x_19, x_20, x_9, x_10, x_11, x_12, x_18);
-return x_21;
+lean_object* x_15; lean_object* x_16; lean_object* x_17; lean_object* x_18; 
+x_15 = lean_ctor_get(x_14, 0);
+lean_inc(x_15);
+x_16 = lean_ctor_get(x_14, 1);
+lean_inc(x_16);
+lean_dec(x_14);
+x_17 = lean_array_push(x_4, x_6);
+x_18 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg(x_5, x_15, x_13, x_17, x_7, x_8, x_9, x_10, x_16);
+return x_18;
 }
 else
 {
-uint8_t x_22; 
-lean_dec(x_15);
-lean_dec(x_12);
-lean_dec(x_11);
+uint8_t x_19; 
+lean_dec(x_13);
 lean_dec(x_10);
 lean_dec(x_9);
 lean_dec(x_8);
 lean_dec(x_7);
 lean_dec(x_6);
 lean_dec(x_5);
-x_22 = !lean_is_exclusive(x_16);
-if (x_22 == 0)
+lean_dec(x_4);
+x_19 = !lean_is_exclusive(x_14);
+if (x_19 == 0)
 {
-return x_16;
+return x_14;
 }
 else
 {
-lean_object* x_23; lean_object* x_24; lean_object* x_25; 
-x_23 = lean_ctor_get(x_16, 0);
-x_24 = lean_ctor_get(x_16, 1);
-lean_inc(x_24);
-lean_inc(x_23);
-lean_dec(x_16);
-x_25 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_25, 0, x_23);
-lean_ctor_set(x_25, 1, x_24);
-return x_25;
+lean_object* x_20; lean_object* x_21; lean_object* x_22; 
+x_20 = lean_ctor_get(x_14, 0);
+x_21 = lean_ctor_get(x_14, 1);
+lean_inc(x_21);
+lean_inc(x_20);
+lean_dec(x_14);
+x_22 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_22, 0, x_20);
+lean_ctor_set(x_22, 1, x_21);
+return x_22;
 }
 }
 }
 }
-lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7, lean_object* x_8, lean_object* x_9, lean_object* x_10, lean_object* x_11, lean_object* x_12, lean_object* x_13, lean_object* x_14) {
+lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7, lean_object* x_8, lean_object* x_9, lean_object* x_10, lean_object* x_11, lean_object* x_12) {
 _start:
 {
-lean_object* x_15; lean_object* x_16; uint8_t x_17; lean_object* x_18; 
-lean_inc(x_2);
-lean_inc(x_1);
-x_15 = l_Lean_Name_appendIndexAfter(x_1, x_2);
-x_16 = lean_alloc_closure((void*)(l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1___boxed), 13, 7);
-lean_closure_set(x_16, 0, x_3);
-lean_closure_set(x_16, 1, x_4);
-lean_closure_set(x_16, 2, x_5);
-lean_closure_set(x_16, 3, x_2);
-lean_closure_set(x_16, 4, x_6);
-lean_closure_set(x_16, 5, x_1);
-lean_closure_set(x_16, 6, x_7);
-x_17 = 0;
-x_18 = l_Lean_Meta_withLocalDecl___at_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___spec__1___rarg(x_15, x_17, x_8, x_16, x_10, x_11, x_12, x_13, x_14);
-return x_18;
+lean_object* x_13; lean_object* x_14; lean_object* x_15; lean_object* x_16; lean_object* x_17; uint8_t x_18; lean_object* x_19; 
+x_13 = l_Lean_Meta_mkArrow___rarg___closed__2;
+x_14 = l___private_Lean_CoreM_0__Lean_Core_mkFreshNameImp(x_13, x_10, x_11, x_12);
+x_15 = lean_ctor_get(x_14, 0);
+lean_inc(x_15);
+x_16 = lean_ctor_get(x_14, 1);
+lean_inc(x_16);
+lean_dec(x_14);
+x_17 = lean_alloc_closure((void*)(l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1___boxed), 11, 5);
+lean_closure_set(x_17, 0, x_1);
+lean_closure_set(x_17, 1, x_2);
+lean_closure_set(x_17, 2, x_3);
+lean_closure_set(x_17, 3, x_4);
+lean_closure_set(x_17, 4, x_5);
+x_18 = 0;
+x_19 = l_Lean_Meta_withLocalDecl___at_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___spec__1___rarg(x_15, x_18, x_6, x_17, x_8, x_9, x_10, x_11, x_16);
+return x_19;
 }
 }
 static lean_object* _init_l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___closed__1() {
@@ -1004,96 +1006,94 @@ x_2 = l_Lean_stringToMessageData(x_1);
 return x_2;
 }
 }
-lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7, lean_object* x_8, lean_object* x_9, lean_object* x_10, lean_object* x_11) {
+lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7, lean_object* x_8, lean_object* x_9) {
 _start:
 {
-lean_object* x_12; uint8_t x_13; 
-x_12 = lean_array_get_size(x_3);
-x_13 = lean_nat_dec_lt(x_4, x_12);
-if (x_13 == 0)
+lean_object* x_10; uint8_t x_11; 
+x_10 = lean_array_get_size(x_2);
+x_11 = lean_nat_dec_lt(x_3, x_10);
+if (x_11 == 0)
 {
-lean_object* x_14; 
-lean_dec(x_12);
-lean_dec(x_5);
-lean_dec(x_4);
+lean_object* x_12; 
+lean_dec(x_10);
 lean_dec(x_3);
-lean_dec(x_1);
-x_14 = lean_apply_6(x_2, x_6, x_7, x_8, x_9, x_10, x_11);
-return x_14;
+lean_dec(x_2);
+x_12 = lean_apply_6(x_1, x_4, x_5, x_6, x_7, x_8, x_9);
+return x_12;
 }
 else
 {
-lean_object* x_15; lean_object* x_16; 
-x_15 = lean_array_fget(x_3, x_4);
-x_16 = lean_ctor_get(x_15, 0);
+lean_object* x_13; lean_object* x_14; 
+x_13 = lean_array_fget(x_2, x_3);
+x_14 = lean_ctor_get(x_13, 0);
+lean_inc(x_14);
+if (lean_obj_tag(x_14) == 1)
+{
+uint8_t x_15; 
+x_15 = lean_ctor_get_uint8(x_13, sizeof(void*)*2);
+if (x_15 == 0)
+{
+lean_object* x_16; lean_object* x_17; lean_object* x_18; 
+lean_dec(x_10);
+x_16 = lean_ctor_get(x_13, 1);
 lean_inc(x_16);
-if (lean_obj_tag(x_16) == 1)
+lean_dec(x_13);
+x_17 = lean_ctor_get(x_14, 0);
+lean_inc(x_17);
+lean_inc(x_5);
+x_18 = l_Lean_Meta_getLocalDecl___at_Lean_Meta_getFVarLocalDecl___spec__1(x_17, x_5, x_6, x_7, x_8, x_9);
+if (lean_obj_tag(x_18) == 0)
 {
-uint8_t x_17; 
-x_17 = lean_ctor_get_uint8(x_15, sizeof(void*)*2);
-if (x_17 == 0)
-{
-lean_object* x_18; lean_object* x_19; lean_object* x_20; 
-lean_dec(x_12);
-x_18 = lean_ctor_get(x_15, 1);
-lean_inc(x_18);
-lean_dec(x_15);
-x_19 = lean_ctor_get(x_16, 0);
+lean_object* x_19; 
+x_19 = lean_ctor_get(x_18, 0);
 lean_inc(x_19);
-lean_inc(x_7);
-x_20 = l_Lean_Meta_getLocalDecl___at_Lean_Meta_getFVarLocalDecl___spec__1(x_19, x_7, x_8, x_9, x_10, x_11);
-if (lean_obj_tag(x_20) == 0)
+if (lean_obj_tag(x_19) == 0)
 {
-lean_object* x_21; 
-x_21 = lean_ctor_get(x_20, 0);
-lean_inc(x_21);
-if (lean_obj_tag(x_21) == 0)
-{
-lean_object* x_22; lean_object* x_23; lean_object* x_24; lean_object* x_25; 
-lean_dec(x_21);
+lean_object* x_20; lean_object* x_21; lean_object* x_22; lean_object* x_23; 
+lean_dec(x_19);
+lean_dec(x_16);
+x_20 = lean_ctor_get(x_18, 1);
+lean_inc(x_20);
 lean_dec(x_18);
-x_22 = lean_ctor_get(x_20, 1);
-lean_inc(x_22);
-lean_dec(x_20);
-x_23 = lean_unsigned_to_nat(1u);
-x_24 = lean_nat_add(x_4, x_23);
-lean_dec(x_4);
-x_25 = lean_array_push(x_6, x_16);
-x_4 = x_24;
-x_6 = x_25;
-x_11 = x_22;
+x_21 = lean_unsigned_to_nat(1u);
+x_22 = lean_nat_add(x_3, x_21);
+lean_dec(x_3);
+x_23 = lean_array_push(x_4, x_14);
+x_3 = x_22;
+x_4 = x_23;
+x_9 = x_20;
 goto _start;
 }
 else
 {
-lean_object* x_27; lean_object* x_28; lean_object* x_29; uint8_t x_30; lean_object* x_31; 
-lean_dec(x_21);
-x_27 = lean_ctor_get(x_20, 1);
-lean_inc(x_27);
-lean_dec(x_20);
-lean_inc(x_5);
-lean_inc(x_1);
-x_28 = l_Lean_Name_appendIndexAfter(x_1, x_5);
-x_29 = lean_alloc_closure((void*)(l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1___boxed), 13, 7);
-lean_closure_set(x_29, 0, x_4);
-lean_closure_set(x_29, 1, x_16);
-lean_closure_set(x_29, 2, x_3);
-lean_closure_set(x_29, 3, x_5);
-lean_closure_set(x_29, 4, x_6);
-lean_closure_set(x_29, 5, x_1);
-lean_closure_set(x_29, 6, x_2);
-x_30 = 0;
-x_31 = l_Lean_Meta_withLocalDecl___at_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___spec__1___rarg(x_28, x_30, x_18, x_29, x_7, x_8, x_9, x_10, x_27);
-return x_31;
+lean_object* x_25; lean_object* x_26; lean_object* x_27; lean_object* x_28; lean_object* x_29; lean_object* x_30; uint8_t x_31; lean_object* x_32; 
+x_25 = lean_ctor_get(x_18, 1);
+lean_inc(x_25);
+lean_dec(x_18);
+x_26 = l_Lean_LocalDecl_userName(x_19);
+lean_dec(x_19);
+x_27 = l___private_Lean_CoreM_0__Lean_Core_mkFreshNameImp(x_26, x_7, x_8, x_25);
+x_28 = lean_ctor_get(x_27, 0);
+lean_inc(x_28);
+x_29 = lean_ctor_get(x_27, 1);
+lean_inc(x_29);
+lean_dec(x_27);
+x_30 = lean_alloc_closure((void*)(l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1___boxed), 11, 5);
+lean_closure_set(x_30, 0, x_3);
+lean_closure_set(x_30, 1, x_14);
+lean_closure_set(x_30, 2, x_2);
+lean_closure_set(x_30, 3, x_4);
+lean_closure_set(x_30, 4, x_1);
+x_31 = 0;
+x_32 = l_Lean_Meta_withLocalDecl___at_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___spec__1___rarg(x_28, x_31, x_16, x_30, x_5, x_6, x_7, x_8, x_29);
+return x_32;
 }
 }
 else
 {
-uint8_t x_32; 
-lean_dec(x_18);
+uint8_t x_33; 
 lean_dec(x_16);
-lean_dec(x_10);
-lean_dec(x_9);
+lean_dec(x_14);
 lean_dec(x_8);
 lean_dec(x_7);
 lean_dec(x_6);
@@ -1102,208 +1102,204 @@ lean_dec(x_4);
 lean_dec(x_3);
 lean_dec(x_2);
 lean_dec(x_1);
-x_32 = !lean_is_exclusive(x_20);
-if (x_32 == 0)
+x_33 = !lean_is_exclusive(x_18);
+if (x_33 == 0)
 {
-return x_20;
+return x_18;
 }
 else
 {
-lean_object* x_33; lean_object* x_34; lean_object* x_35; 
-x_33 = lean_ctor_get(x_20, 0);
-x_34 = lean_ctor_get(x_20, 1);
+lean_object* x_34; lean_object* x_35; lean_object* x_36; 
+x_34 = lean_ctor_get(x_18, 0);
+x_35 = lean_ctor_get(x_18, 1);
+lean_inc(x_35);
 lean_inc(x_34);
-lean_inc(x_33);
-lean_dec(x_20);
-x_35 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_35, 0, x_33);
-lean_ctor_set(x_35, 1, x_34);
-return x_35;
+lean_dec(x_18);
+x_36 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_36, 0, x_34);
+lean_ctor_set(x_36, 1, x_35);
+return x_36;
 }
 }
 }
 else
 {
-lean_object* x_36; lean_object* x_37; lean_object* x_38; uint8_t x_39; 
-x_36 = lean_ctor_get(x_15, 1);
-lean_inc(x_36);
-lean_dec(x_15);
-lean_inc(x_10);
-lean_inc(x_9);
+lean_object* x_37; lean_object* x_38; lean_object* x_39; uint8_t x_40; 
+x_37 = lean_ctor_get(x_13, 1);
+lean_inc(x_37);
+lean_dec(x_13);
 lean_inc(x_8);
 lean_inc(x_7);
-lean_inc(x_36);
-x_37 = l_Lean_Meta_isTypeCorrect(x_36, x_7, x_8, x_9, x_10, x_11);
-x_38 = lean_ctor_get(x_37, 0);
-lean_inc(x_38);
-x_39 = lean_unbox(x_38);
+lean_inc(x_6);
+lean_inc(x_5);
+lean_inc(x_37);
+x_38 = l_Lean_Meta_isTypeCorrect(x_37, x_5, x_6, x_7, x_8, x_9);
+x_39 = lean_ctor_get(x_38, 0);
+lean_inc(x_39);
+x_40 = lean_unbox(x_39);
+lean_dec(x_39);
+if (x_40 == 0)
+{
+lean_object* x_41; size_t x_42; size_t x_43; lean_object* x_44; lean_object* x_45; lean_object* x_46; lean_object* x_47; lean_object* x_48; lean_object* x_49; lean_object* x_50; lean_object* x_51; lean_object* x_52; lean_object* x_53; lean_object* x_54; uint8_t x_55; 
+lean_dec(x_37);
+lean_dec(x_14);
+lean_dec(x_4);
+lean_dec(x_3);
+lean_dec(x_1);
+x_41 = lean_ctor_get(x_38, 1);
+lean_inc(x_41);
 lean_dec(x_38);
-if (x_39 == 0)
-{
-lean_object* x_40; size_t x_41; size_t x_42; lean_object* x_43; lean_object* x_44; lean_object* x_45; lean_object* x_46; lean_object* x_47; lean_object* x_48; lean_object* x_49; lean_object* x_50; lean_object* x_51; lean_object* x_52; lean_object* x_53; uint8_t x_54; 
-lean_dec(x_36);
-lean_dec(x_16);
-lean_dec(x_6);
-lean_dec(x_5);
-lean_dec(x_4);
-lean_dec(x_2);
-lean_dec(x_1);
-x_40 = lean_ctor_get(x_37, 1);
-lean_inc(x_40);
-lean_dec(x_37);
-x_41 = lean_usize_of_nat(x_12);
-lean_dec(x_12);
-x_42 = 0;
-x_43 = x_3;
-x_44 = l_Array_mapMUnsafe_map___at_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___spec__2(x_41, x_42, x_43);
-x_45 = x_44;
-x_46 = l_Array_toList___rarg(x_45);
-lean_dec(x_45);
-x_47 = l_List_map___at_Lean_MessageData_Lean_Message___instance__12___spec__1(x_46);
-x_48 = l_Lean_MessageData_ofList(x_47);
-lean_dec(x_47);
-x_49 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___closed__2;
-x_50 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_50, 0, x_49);
-lean_ctor_set(x_50, 1, x_48);
-x_51 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
-x_52 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_52, 0, x_50);
-lean_ctor_set(x_52, 1, x_51);
-x_53 = l_Lean_throwError___at_Lean_Meta_getMVarDecl___spec__1___rarg(x_52, x_7, x_8, x_9, x_10, x_40);
+x_42 = lean_usize_of_nat(x_10);
 lean_dec(x_10);
-lean_dec(x_9);
+x_43 = 0;
+x_44 = x_2;
+x_45 = l_Array_mapMUnsafe_map___at_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___spec__2(x_42, x_43, x_44);
+x_46 = x_45;
+x_47 = l_Array_toList___rarg(x_46);
+lean_dec(x_46);
+x_48 = l_List_map___at_Lean_MessageData_Lean_Message___instance__12___spec__1(x_47);
+x_49 = l_Lean_MessageData_ofList(x_48);
+lean_dec(x_48);
+x_50 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___closed__2;
+x_51 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_51, 0, x_50);
+lean_ctor_set(x_51, 1, x_49);
+x_52 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
+x_53 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_53, 0, x_51);
+lean_ctor_set(x_53, 1, x_52);
+x_54 = l_Lean_throwError___at_Lean_Meta_getMVarDecl___spec__1___rarg(x_53, x_5, x_6, x_7, x_8, x_41);
 lean_dec(x_8);
 lean_dec(x_7);
-x_54 = !lean_is_exclusive(x_53);
-if (x_54 == 0)
+lean_dec(x_6);
+lean_dec(x_5);
+x_55 = !lean_is_exclusive(x_54);
+if (x_55 == 0)
 {
-return x_53;
+return x_54;
 }
 else
 {
-lean_object* x_55; lean_object* x_56; lean_object* x_57; 
-x_55 = lean_ctor_get(x_53, 0);
-x_56 = lean_ctor_get(x_53, 1);
+lean_object* x_56; lean_object* x_57; lean_object* x_58; 
+x_56 = lean_ctor_get(x_54, 0);
+x_57 = lean_ctor_get(x_54, 1);
+lean_inc(x_57);
 lean_inc(x_56);
-lean_inc(x_55);
-lean_dec(x_53);
-x_57 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_57, 0, x_55);
-lean_ctor_set(x_57, 1, x_56);
-return x_57;
+lean_dec(x_54);
+x_58 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_58, 0, x_56);
+lean_ctor_set(x_58, 1, x_57);
+return x_58;
 }
 }
 else
 {
-lean_object* x_58; lean_object* x_59; lean_object* x_60; 
-lean_dec(x_12);
-x_58 = lean_ctor_get(x_37, 1);
-lean_inc(x_58);
-lean_dec(x_37);
-x_59 = lean_box(0);
-x_60 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2(x_1, x_5, x_4, x_16, x_3, x_6, x_2, x_36, x_59, x_7, x_8, x_9, x_10, x_58);
-return x_60;
+lean_object* x_59; lean_object* x_60; lean_object* x_61; 
+lean_dec(x_10);
+x_59 = lean_ctor_get(x_38, 1);
+lean_inc(x_59);
+lean_dec(x_38);
+x_60 = lean_box(0);
+x_61 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2(x_3, x_14, x_2, x_4, x_1, x_37, x_60, x_5, x_6, x_7, x_8, x_59);
+return x_61;
 }
 }
 }
 else
 {
-uint8_t x_61; 
-x_61 = lean_ctor_get_uint8(x_15, sizeof(void*)*2);
-if (x_61 == 0)
+uint8_t x_62; 
+x_62 = lean_ctor_get_uint8(x_13, sizeof(void*)*2);
+if (x_62 == 0)
 {
-lean_object* x_62; lean_object* x_63; lean_object* x_64; 
-lean_dec(x_12);
-x_62 = lean_ctor_get(x_15, 1);
-lean_inc(x_62);
-lean_dec(x_15);
-x_63 = lean_box(0);
-x_64 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2(x_1, x_5, x_4, x_16, x_3, x_6, x_2, x_62, x_63, x_7, x_8, x_9, x_10, x_11);
-return x_64;
+lean_object* x_63; lean_object* x_64; lean_object* x_65; 
+lean_dec(x_10);
+x_63 = lean_ctor_get(x_13, 1);
+lean_inc(x_63);
+lean_dec(x_13);
+x_64 = lean_box(0);
+x_65 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2(x_3, x_14, x_2, x_4, x_1, x_63, x_64, x_5, x_6, x_7, x_8, x_9);
+return x_65;
 }
 else
 {
-lean_object* x_65; lean_object* x_66; lean_object* x_67; uint8_t x_68; 
-x_65 = lean_ctor_get(x_15, 1);
-lean_inc(x_65);
-lean_dec(x_15);
-lean_inc(x_10);
-lean_inc(x_9);
+lean_object* x_66; lean_object* x_67; lean_object* x_68; uint8_t x_69; 
+x_66 = lean_ctor_get(x_13, 1);
+lean_inc(x_66);
+lean_dec(x_13);
 lean_inc(x_8);
 lean_inc(x_7);
-lean_inc(x_65);
-x_66 = l_Lean_Meta_isTypeCorrect(x_65, x_7, x_8, x_9, x_10, x_11);
-x_67 = lean_ctor_get(x_66, 0);
-lean_inc(x_67);
-x_68 = lean_unbox(x_67);
-lean_dec(x_67);
-if (x_68 == 0)
+lean_inc(x_6);
+lean_inc(x_5);
+lean_inc(x_66);
+x_67 = l_Lean_Meta_isTypeCorrect(x_66, x_5, x_6, x_7, x_8, x_9);
+x_68 = lean_ctor_get(x_67, 0);
+lean_inc(x_68);
+x_69 = lean_unbox(x_68);
+lean_dec(x_68);
+if (x_69 == 0)
 {
-lean_object* x_69; size_t x_70; size_t x_71; lean_object* x_72; lean_object* x_73; lean_object* x_74; lean_object* x_75; lean_object* x_76; lean_object* x_77; lean_object* x_78; lean_object* x_79; lean_object* x_80; lean_object* x_81; lean_object* x_82; uint8_t x_83; 
-lean_dec(x_65);
-lean_dec(x_16);
-lean_dec(x_6);
-lean_dec(x_5);
-lean_dec(x_4);
-lean_dec(x_2);
-lean_dec(x_1);
-x_69 = lean_ctor_get(x_66, 1);
-lean_inc(x_69);
+lean_object* x_70; size_t x_71; size_t x_72; lean_object* x_73; lean_object* x_74; lean_object* x_75; lean_object* x_76; lean_object* x_77; lean_object* x_78; lean_object* x_79; lean_object* x_80; lean_object* x_81; lean_object* x_82; lean_object* x_83; uint8_t x_84; 
 lean_dec(x_66);
-x_70 = lean_usize_of_nat(x_12);
-lean_dec(x_12);
-x_71 = 0;
-x_72 = x_3;
-x_73 = l_Array_mapMUnsafe_map___at_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___spec__2(x_70, x_71, x_72);
-x_74 = x_73;
-x_75 = l_Array_toList___rarg(x_74);
-lean_dec(x_74);
-x_76 = l_List_map___at_Lean_MessageData_Lean_Message___instance__12___spec__1(x_75);
-x_77 = l_Lean_MessageData_ofList(x_76);
-lean_dec(x_76);
-x_78 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___closed__2;
-x_79 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_79, 0, x_78);
-lean_ctor_set(x_79, 1, x_77);
-x_80 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
-x_81 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_81, 0, x_79);
-lean_ctor_set(x_81, 1, x_80);
-x_82 = l_Lean_throwError___at_Lean_Meta_getMVarDecl___spec__1___rarg(x_81, x_7, x_8, x_9, x_10, x_69);
+lean_dec(x_14);
+lean_dec(x_4);
+lean_dec(x_3);
+lean_dec(x_1);
+x_70 = lean_ctor_get(x_67, 1);
+lean_inc(x_70);
+lean_dec(x_67);
+x_71 = lean_usize_of_nat(x_10);
 lean_dec(x_10);
-lean_dec(x_9);
+x_72 = 0;
+x_73 = x_2;
+x_74 = l_Array_mapMUnsafe_map___at_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___spec__2(x_71, x_72, x_73);
+x_75 = x_74;
+x_76 = l_Array_toList___rarg(x_75);
+lean_dec(x_75);
+x_77 = l_List_map___at_Lean_MessageData_Lean_Message___instance__12___spec__1(x_76);
+x_78 = l_Lean_MessageData_ofList(x_77);
+lean_dec(x_77);
+x_79 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___closed__2;
+x_80 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_80, 0, x_79);
+lean_ctor_set(x_80, 1, x_78);
+x_81 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
+x_82 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_82, 0, x_80);
+lean_ctor_set(x_82, 1, x_81);
+x_83 = l_Lean_throwError___at_Lean_Meta_getMVarDecl___spec__1___rarg(x_82, x_5, x_6, x_7, x_8, x_70);
 lean_dec(x_8);
 lean_dec(x_7);
-x_83 = !lean_is_exclusive(x_82);
-if (x_83 == 0)
+lean_dec(x_6);
+lean_dec(x_5);
+x_84 = !lean_is_exclusive(x_83);
+if (x_84 == 0)
 {
-return x_82;
+return x_83;
 }
 else
 {
-lean_object* x_84; lean_object* x_85; lean_object* x_86; 
-x_84 = lean_ctor_get(x_82, 0);
-x_85 = lean_ctor_get(x_82, 1);
+lean_object* x_85; lean_object* x_86; lean_object* x_87; 
+x_85 = lean_ctor_get(x_83, 0);
+x_86 = lean_ctor_get(x_83, 1);
+lean_inc(x_86);
 lean_inc(x_85);
-lean_inc(x_84);
-lean_dec(x_82);
-x_86 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_86, 0, x_84);
-lean_ctor_set(x_86, 1, x_85);
-return x_86;
+lean_dec(x_83);
+x_87 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_87, 0, x_85);
+lean_ctor_set(x_87, 1, x_86);
+return x_87;
 }
 }
 else
 {
-lean_object* x_87; lean_object* x_88; lean_object* x_89; 
-lean_dec(x_12);
-x_87 = lean_ctor_get(x_66, 1);
-lean_inc(x_87);
-lean_dec(x_66);
-x_88 = lean_box(0);
-x_89 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2(x_1, x_5, x_4, x_16, x_3, x_6, x_2, x_65, x_88, x_7, x_8, x_9, x_10, x_87);
-return x_89;
+lean_object* x_88; lean_object* x_89; lean_object* x_90; 
+lean_dec(x_10);
+x_88 = lean_ctor_get(x_67, 1);
+lean_inc(x_88);
+lean_dec(x_67);
+x_89 = lean_box(0);
+x_90 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2(x_3, x_14, x_2, x_4, x_1, x_66, x_89, x_5, x_6, x_7, x_8, x_88);
+return x_90;
 }
 }
 }
@@ -1314,7 +1310,7 @@ lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux(lean_object*
 _start:
 {
 lean_object* x_2; 
-x_2 = lean_alloc_closure((void*)(l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg), 11, 0);
+x_2 = lean_alloc_closure((void*)(l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg), 9, 0);
 return x_2;
 }
 }
@@ -1340,23 +1336,22 @@ x_6 = l_Array_mapMUnsafe_map___at_Lean_Meta_GeneralizeTelescope_generalizeTelesc
 return x_6;
 }
 }
-lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1___boxed(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7, lean_object* x_8, lean_object* x_9, lean_object* x_10, lean_object* x_11, lean_object* x_12, lean_object* x_13) {
+lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1___boxed(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7, lean_object* x_8, lean_object* x_9, lean_object* x_10, lean_object* x_11) {
 _start:
 {
-lean_object* x_14; 
-x_14 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1(x_1, x_2, x_3, x_4, x_5, x_6, x_7, x_8, x_9, x_10, x_11, x_12, x_13);
-lean_dec(x_4);
+lean_object* x_12; 
+x_12 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__1(x_1, x_2, x_3, x_4, x_5, x_6, x_7, x_8, x_9, x_10, x_11);
 lean_dec(x_1);
-return x_14;
+return x_12;
 }
 }
-lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2___boxed(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7, lean_object* x_8, lean_object* x_9, lean_object* x_10, lean_object* x_11, lean_object* x_12, lean_object* x_13, lean_object* x_14) {
+lean_object* l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2___boxed(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7, lean_object* x_8, lean_object* x_9, lean_object* x_10, lean_object* x_11, lean_object* x_12) {
 _start:
 {
-lean_object* x_15; 
-x_15 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2(x_1, x_2, x_3, x_4, x_5, x_6, x_7, x_8, x_9, x_10, x_11, x_12, x_13, x_14);
-lean_dec(x_9);
-return x_15;
+lean_object* x_13; 
+x_13 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg___lambda__2(x_1, x_2, x_3, x_4, x_5, x_6, x_7, x_8, x_9, x_10, x_11, x_12);
+lean_dec(x_7);
+return x_13;
 }
 }
 lean_object* l_Array_mapMUnsafe_map___at_Lean_Meta_generalizeTelescope___spec__1(size_t x_1, size_t x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7, lean_object* x_8) {
@@ -1494,66 +1489,64 @@ x_2 = lean_box_usize(x_1);
 return x_2;
 }
 }
-lean_object* l_Lean_Meta_generalizeTelescope___rarg(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7, lean_object* x_8) {
+lean_object* l_Lean_Meta_generalizeTelescope___rarg(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5, lean_object* x_6, lean_object* x_7) {
 _start:
 {
-lean_object* x_9; size_t x_10; lean_object* x_11; lean_object* x_12; lean_object* x_13; lean_object* x_14; lean_object* x_15; lean_object* x_16; 
-x_9 = lean_array_get_size(x_1);
-x_10 = lean_usize_of_nat(x_9);
-lean_dec(x_9);
-x_11 = x_1;
-x_12 = lean_box_usize(x_10);
-x_13 = l_Lean_Meta_generalizeTelescope___rarg___boxed__const__1;
-x_14 = lean_alloc_closure((void*)(l_Array_mapMUnsafe_map___at_Lean_Meta_generalizeTelescope___spec__1___boxed), 8, 3);
-lean_closure_set(x_14, 0, x_12);
-lean_closure_set(x_14, 1, x_13);
-lean_closure_set(x_14, 2, x_11);
-x_15 = x_14;
-lean_inc(x_7);
+lean_object* x_8; size_t x_9; lean_object* x_10; lean_object* x_11; lean_object* x_12; lean_object* x_13; lean_object* x_14; lean_object* x_15; 
+x_8 = lean_array_get_size(x_1);
+x_9 = lean_usize_of_nat(x_8);
+lean_dec(x_8);
+x_10 = x_1;
+x_11 = lean_box_usize(x_9);
+x_12 = l_Lean_Meta_generalizeTelescope___rarg___boxed__const__1;
+x_13 = lean_alloc_closure((void*)(l_Array_mapMUnsafe_map___at_Lean_Meta_generalizeTelescope___spec__1___boxed), 8, 3);
+lean_closure_set(x_13, 0, x_11);
+lean_closure_set(x_13, 1, x_12);
+lean_closure_set(x_13, 2, x_10);
+x_14 = x_13;
 lean_inc(x_6);
 lean_inc(x_5);
 lean_inc(x_4);
-x_16 = lean_apply_5(x_15, x_4, x_5, x_6, x_7, x_8);
-if (lean_obj_tag(x_16) == 0)
+lean_inc(x_3);
+x_15 = lean_apply_5(x_14, x_3, x_4, x_5, x_6, x_7);
+if (lean_obj_tag(x_15) == 0)
 {
-lean_object* x_17; lean_object* x_18; lean_object* x_19; lean_object* x_20; lean_object* x_21; lean_object* x_22; 
-x_17 = lean_ctor_get(x_16, 0);
+lean_object* x_16; lean_object* x_17; lean_object* x_18; lean_object* x_19; lean_object* x_20; 
+x_16 = lean_ctor_get(x_15, 0);
+lean_inc(x_16);
+x_17 = lean_ctor_get(x_15, 1);
 lean_inc(x_17);
-x_18 = lean_ctor_get(x_16, 1);
-lean_inc(x_18);
-lean_dec(x_16);
-x_19 = lean_unsigned_to_nat(0u);
-x_20 = lean_unsigned_to_nat(1u);
-x_21 = l_Array_empty___closed__1;
-x_22 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg(x_2, x_3, x_17, x_19, x_20, x_21, x_4, x_5, x_6, x_7, x_18);
-return x_22;
+lean_dec(x_15);
+x_18 = lean_unsigned_to_nat(0u);
+x_19 = l_Array_empty___closed__1;
+x_20 = l_Lean_Meta_GeneralizeTelescope_generalizeTelescopeAux___rarg(x_2, x_16, x_18, x_19, x_3, x_4, x_5, x_6, x_17);
+return x_20;
 }
 else
 {
-uint8_t x_23; 
-lean_dec(x_7);
+uint8_t x_21; 
 lean_dec(x_6);
 lean_dec(x_5);
 lean_dec(x_4);
 lean_dec(x_3);
 lean_dec(x_2);
-x_23 = !lean_is_exclusive(x_16);
-if (x_23 == 0)
+x_21 = !lean_is_exclusive(x_15);
+if (x_21 == 0)
 {
-return x_16;
+return x_15;
 }
 else
 {
-lean_object* x_24; lean_object* x_25; lean_object* x_26; 
-x_24 = lean_ctor_get(x_16, 0);
-x_25 = lean_ctor_get(x_16, 1);
-lean_inc(x_25);
-lean_inc(x_24);
-lean_dec(x_16);
-x_26 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_26, 0, x_24);
-lean_ctor_set(x_26, 1, x_25);
-return x_26;
+lean_object* x_22; lean_object* x_23; lean_object* x_24; 
+x_22 = lean_ctor_get(x_15, 0);
+x_23 = lean_ctor_get(x_15, 1);
+lean_inc(x_23);
+lean_inc(x_22);
+lean_dec(x_15);
+x_24 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_24, 0, x_22);
+lean_ctor_set(x_24, 1, x_23);
+return x_24;
 }
 }
 }
@@ -1562,7 +1555,7 @@ lean_object* l_Lean_Meta_generalizeTelescope(lean_object* x_1) {
 _start:
 {
 lean_object* x_2; 
-x_2 = lean_alloc_closure((void*)(l_Lean_Meta_generalizeTelescope___rarg), 8, 0);
+x_2 = lean_alloc_closure((void*)(l_Lean_Meta_generalizeTelescope___rarg), 7, 0);
 return x_2;
 }
 }
diff --git a/stage0/stdlib/Lean/Meta/Tactic/Rewrite.c b/stage0/stdlib/Lean/Meta/Tactic/Rewrite.c
index a9ff686d15..35c57dabca 100644
--- a/stage0/stdlib/Lean/Meta/Tactic/Rewrite.c
+++ b/stage0/stdlib/Lean/Meta/Tactic/Rewrite.c
@@ -1,6 +1,6 @@
 // Lean compiler output
 // Module: Lean.Meta.Tactic.Rewrite
-// Imports: Init Lean.Meta.AppBuilder Lean.Meta.KAbstract Lean.Meta.Check Lean.Meta.Tactic.Apply
+// Imports: Init Lean.Meta.AppBuilder Lean.Meta.MatchUtil Lean.Meta.KAbstract Lean.Meta.Check Lean.Meta.Tactic.Apply
 #include <lean/lean.h>
 #if defined(__clang__)
 #pragma clang diagnostic ignored "-Wunused-parameter"
@@ -15,7 +15,6 @@ extern "C" {
 #endif
 lean_object* l_Lean_Meta_rewrite___lambda__4___closed__9;
 size_t l_USize_add(size_t, size_t);
-extern lean_object* l_Lean_Expr_eq_x3f___closed__2;
 lean_object* l_Lean_Expr_mvarId_x21(lean_object*);
 lean_object* l_Lean_stringToMessageData(lean_object*);
 lean_object* l___private_Lean_Meta_AppBuilder_0__Lean_Meta_mkEqImp(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
@@ -81,6 +80,7 @@ lean_object* l_Lean_Expr_toHeadIndex(lean_object*);
 size_t lean_usize_of_nat(lean_object*);
 lean_object* l_Lean_Meta_rewrite_match__1(lean_object*);
 lean_object* l_Lean_Meta_rewrite___lambda__4___closed__7;
+lean_object* l_Lean_Meta_matchEq_x3f(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Meta_throwTacticEx___rarg(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l___private_Lean_HeadIndex_0__Lean_Expr_headNumArgsAux(lean_object*, lean_object*);
 extern lean_object* l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
@@ -1463,7 +1463,7 @@ static lean_object* _init_l_Lean_Meta_rewrite___lambda__4___closed__1() {
 _start:
 {
 lean_object* x_1; 
-x_1 = lean_mk_string("equality of iff proof expected");
+x_1 = lean_mk_string("equality or iff proof expected");
 return x_1;
 }
 }
@@ -1588,17 +1588,28 @@ x_28 = lean_unsigned_to_nat(2u);
 x_29 = l_Lean_Expr_isAppOfArity(x_25, x_27, x_28);
 if (x_29 == 0)
 {
-lean_object* x_30; lean_object* x_31; uint8_t x_32; 
-x_30 = l_Lean_Expr_eq_x3f___closed__2;
-x_31 = lean_unsigned_to_nat(3u);
-x_32 = l_Lean_Expr_isAppOfArity(x_25, x_30, x_31);
-if (x_32 == 0)
+lean_object* x_30; 
+lean_inc(x_11);
+lean_inc(x_10);
+lean_inc(x_9);
+lean_inc(x_8);
+lean_inc(x_25);
+x_30 = l_Lean_Meta_matchEq_x3f(x_25, x_8, x_9, x_10, x_11, x_22);
+if (lean_obj_tag(x_30) == 0)
 {
-lean_object* x_33; lean_object* x_34; lean_object* x_35; lean_object* x_36; lean_object* x_37; lean_object* x_38; lean_object* x_39; 
+lean_object* x_31; 
+x_31 = lean_ctor_get(x_30, 0);
+lean_inc(x_31);
+if (lean_obj_tag(x_31) == 0)
+{
+lean_object* x_32; lean_object* x_33; lean_object* x_34; lean_object* x_35; lean_object* x_36; lean_object* x_37; lean_object* x_38; lean_object* x_39; 
 lean_dec(x_26);
 lean_dec(x_24);
 lean_dec(x_23);
 lean_dec(x_5);
+x_32 = lean_ctor_get(x_30, 1);
+lean_inc(x_32);
+lean_dec(x_30);
 x_33 = l_Lean_indentExpr(x_25);
 x_34 = l_Lean_Meta_rewrite___lambda__4___closed__2;
 x_35 = lean_alloc_ctor(10, 2, 0);
@@ -1609,7 +1620,7 @@ x_37 = lean_alloc_ctor(10, 2, 0);
 lean_ctor_set(x_37, 0, x_35);
 lean_ctor_set(x_37, 1, x_36);
 x_38 = lean_box(0);
-x_39 = l_Lean_Meta_throwTacticEx___rarg(x_2, x_3, x_37, x_38, x_8, x_9, x_10, x_11, x_22);
+x_39 = l_Lean_Meta_throwTacticEx___rarg(x_2, x_3, x_37, x_38, x_8, x_9, x_10, x_11, x_32);
 lean_dec(x_11);
 lean_dec(x_10);
 lean_dec(x_9);
@@ -1618,249 +1629,269 @@ return x_39;
 }
 else
 {
-lean_object* x_40; lean_object* x_41; lean_object* x_42; lean_object* x_43; lean_object* x_44; 
-x_40 = l_Lean_Expr_appFn_x21(x_25);
-x_41 = l_Lean_Expr_appFn_x21(x_40);
-x_42 = l_Lean_Expr_appArg_x21(x_41);
-lean_dec(x_41);
-x_43 = l_Lean_Expr_appArg_x21(x_40);
-lean_dec(x_40);
-x_44 = l_Lean_Expr_appArg_x21(x_25);
+lean_object* x_40; lean_object* x_41; 
+x_40 = lean_ctor_get(x_31, 0);
+lean_inc(x_40);
+lean_dec(x_31);
+x_41 = lean_ctor_get(x_40, 1);
+lean_inc(x_41);
 if (x_4 == 0)
 {
-lean_object* x_45; uint8_t x_46; 
-x_45 = l_Lean_Expr_getAppFn(x_43);
-x_46 = l_Lean_Expr_isMVar(x_45);
-lean_dec(x_45);
-if (x_46 == 0)
+lean_object* x_42; lean_object* x_43; lean_object* x_44; lean_object* x_45; lean_object* x_46; uint8_t x_47; 
+x_42 = lean_ctor_get(x_30, 1);
+lean_inc(x_42);
+lean_dec(x_30);
+x_43 = lean_ctor_get(x_40, 0);
+lean_inc(x_43);
+lean_dec(x_40);
+x_44 = lean_ctor_get(x_41, 0);
+lean_inc(x_44);
+x_45 = lean_ctor_get(x_41, 1);
+lean_inc(x_45);
+lean_dec(x_41);
+x_46 = l_Lean_Expr_getAppFn(x_44);
+x_47 = l_Lean_Expr_isMVar(x_46);
+lean_dec(x_46);
+if (x_47 == 0)
 {
-lean_object* x_47; lean_object* x_48; 
+lean_object* x_48; lean_object* x_49; 
 lean_dec(x_25);
-x_47 = lean_box(0);
-x_48 = l_Lean_Meta_rewrite___lambda__3(x_5, x_43, x_6, x_44, x_42, x_26, x_2, x_3, x_23, x_24, x_47, x_8, x_9, x_10, x_11, x_22);
+x_48 = lean_box(0);
+x_49 = l_Lean_Meta_rewrite___lambda__3(x_5, x_44, x_6, x_45, x_43, x_26, x_2, x_3, x_23, x_24, x_48, x_8, x_9, x_10, x_11, x_42);
 lean_dec(x_24);
 lean_dec(x_23);
-lean_dec(x_44);
-return x_48;
+lean_dec(x_45);
+return x_49;
 }
 else
 {
-lean_object* x_49; lean_object* x_50; lean_object* x_51; lean_object* x_52; lean_object* x_53; lean_object* x_54; lean_object* x_55; lean_object* x_56; lean_object* x_57; lean_object* x_58; lean_object* x_59; uint8_t x_60; 
-lean_dec(x_44);
-lean_dec(x_42);
+lean_object* x_50; lean_object* x_51; lean_object* x_52; lean_object* x_53; lean_object* x_54; lean_object* x_55; lean_object* x_56; lean_object* x_57; lean_object* x_58; lean_object* x_59; lean_object* x_60; uint8_t x_61; 
+lean_dec(x_45);
+lean_dec(x_43);
 lean_dec(x_26);
 lean_dec(x_24);
 lean_dec(x_23);
 lean_dec(x_5);
-x_49 = l_Lean_indentExpr(x_43);
-x_50 = l_Lean_Meta_rewrite___lambda__4___closed__4;
-x_51 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_51, 0, x_50);
-lean_ctor_set(x_51, 1, x_49);
-x_52 = l_Lean_Meta_rewrite___lambda__4___closed__6;
-x_53 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_53, 0, x_51);
-lean_ctor_set(x_53, 1, x_52);
-x_54 = l_Lean_indentExpr(x_25);
-x_55 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_55, 0, x_53);
-lean_ctor_set(x_55, 1, x_54);
-x_56 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
-x_57 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_57, 0, x_55);
-lean_ctor_set(x_57, 1, x_56);
-x_58 = lean_box(0);
-x_59 = l_Lean_Meta_throwTacticEx___rarg(x_2, x_3, x_57, x_58, x_8, x_9, x_10, x_11, x_22);
+x_50 = l_Lean_indentExpr(x_44);
+x_51 = l_Lean_Meta_rewrite___lambda__4___closed__4;
+x_52 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_52, 0, x_51);
+lean_ctor_set(x_52, 1, x_50);
+x_53 = l_Lean_Meta_rewrite___lambda__4___closed__6;
+x_54 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_54, 0, x_52);
+lean_ctor_set(x_54, 1, x_53);
+x_55 = l_Lean_indentExpr(x_25);
+x_56 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_56, 0, x_54);
+lean_ctor_set(x_56, 1, x_55);
+x_57 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
+x_58 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_58, 0, x_56);
+lean_ctor_set(x_58, 1, x_57);
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+x_60 = l_Lean_Meta_throwTacticEx___rarg(x_2, x_3, x_58, x_59, x_8, x_9, x_10, x_11, x_42);
 lean_dec(x_11);
 lean_dec(x_10);
 lean_dec(x_9);
 lean_dec(x_8);
-x_60 = !lean_is_exclusive(x_59);
-if (x_60 == 0)
+x_61 = !lean_is_exclusive(x_60);
+if (x_61 == 0)
 {
-return x_59;
+return x_60;
 }
 else
 {
-lean_object* x_61; lean_object* x_62; lean_object* x_63; 
-x_61 = lean_ctor_get(x_59, 0);
-x_62 = lean_ctor_get(x_59, 1);
+lean_object* x_62; lean_object* x_63; lean_object* x_64; 
+x_62 = lean_ctor_get(x_60, 0);
+x_63 = lean_ctor_get(x_60, 1);
+lean_inc(x_63);
 lean_inc(x_62);
-lean_inc(x_61);
-lean_dec(x_59);
-x_63 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_63, 0, x_61);
-lean_ctor_set(x_63, 1, x_62);
-return x_63;
-}
-}
-}
-else
-{
-lean_object* x_64; 
-lean_dec(x_25);
-lean_inc(x_11);
-lean_inc(x_10);
-lean_inc(x_9);
-lean_inc(x_8);
-x_64 = l___private_Lean_Meta_AppBuilder_0__Lean_Meta_mkEqSymmImp(x_26, x_8, x_9, x_10, x_11, x_22);
-if (lean_obj_tag(x_64) == 0)
-{
-lean_object* x_65; lean_object* x_66; lean_object* x_67; 
-x_65 = lean_ctor_get(x_64, 0);
-lean_inc(x_65);
-x_66 = lean_ctor_get(x_64, 1);
-lean_inc(x_66);
-lean_dec(x_64);
-lean_inc(x_11);
-lean_inc(x_10);
-lean_inc(x_9);
-lean_inc(x_8);
-lean_inc(x_43);
-lean_inc(x_44);
-x_67 = l___private_Lean_Meta_AppBuilder_0__Lean_Meta_mkEqImp(x_44, x_43, x_8, x_9, x_10, x_11, x_66);
-if (lean_obj_tag(x_67) == 0)
-{
-lean_object* x_68; lean_object* x_69; lean_object* x_70; uint8_t x_71; 
-x_68 = lean_ctor_get(x_67, 0);
-lean_inc(x_68);
-x_69 = lean_ctor_get(x_67, 1);
-lean_inc(x_69);
-lean_dec(x_67);
-x_70 = l_Lean_Expr_getAppFn(x_44);
-x_71 = l_Lean_Expr_isMVar(x_70);
-lean_dec(x_70);
-if (x_71 == 0)
-{
-lean_object* x_72; lean_object* x_73; 
-lean_dec(x_68);
-x_72 = lean_box(0);
-x_73 = l_Lean_Meta_rewrite___lambda__3(x_5, x_44, x_6, x_43, x_42, x_65, x_2, x_3, x_23, x_24, x_72, x_8, x_9, x_10, x_11, x_69);
-lean_dec(x_24);
-lean_dec(x_23);
-lean_dec(x_43);
-return x_73;
-}
-else
-{
-lean_object* x_74; lean_object* x_75; lean_object* x_76; lean_object* x_77; lean_object* x_78; lean_object* x_79; lean_object* x_80; lean_object* x_81; lean_object* x_82; lean_object* x_83; lean_object* x_84; uint8_t x_85; 
-lean_dec(x_65);
-lean_dec(x_43);
-lean_dec(x_42);
-lean_dec(x_24);
-lean_dec(x_23);
-lean_dec(x_5);
-x_74 = l_Lean_indentExpr(x_44);
-x_75 = l_Lean_Meta_rewrite___lambda__4___closed__4;
-x_76 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_76, 0, x_75);
-lean_ctor_set(x_76, 1, x_74);
-x_77 = l_Lean_Meta_rewrite___lambda__4___closed__6;
-x_78 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_78, 0, x_76);
-lean_ctor_set(x_78, 1, x_77);
-x_79 = l_Lean_indentExpr(x_68);
-x_80 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_80, 0, x_78);
-lean_ctor_set(x_80, 1, x_79);
-x_81 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
-x_82 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_82, 0, x_80);
-lean_ctor_set(x_82, 1, x_81);
-x_83 = lean_box(0);
-x_84 = l_Lean_Meta_throwTacticEx___rarg(x_2, x_3, x_82, x_83, x_8, x_9, x_10, x_11, x_69);
-lean_dec(x_11);
-lean_dec(x_10);
-lean_dec(x_9);
-lean_dec(x_8);
-x_85 = !lean_is_exclusive(x_84);
-if (x_85 == 0)
-{
-return x_84;
-}
-else
-{
-lean_object* x_86; lean_object* x_87; lean_object* x_88; 
-x_86 = lean_ctor_get(x_84, 0);
-x_87 = lean_ctor_get(x_84, 1);
-lean_inc(x_87);
-lean_inc(x_86);
-lean_dec(x_84);
-x_88 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_88, 0, x_86);
-lean_ctor_set(x_88, 1, x_87);
-return x_88;
-}
-}
-}
-else
-{
-uint8_t x_89; 
-lean_dec(x_65);
-lean_dec(x_44);
-lean_dec(x_43);
-lean_dec(x_42);
-lean_dec(x_24);
-lean_dec(x_23);
-lean_dec(x_11);
-lean_dec(x_10);
-lean_dec(x_9);
-lean_dec(x_8);
-lean_dec(x_5);
-lean_dec(x_3);
-lean_dec(x_2);
-x_89 = !lean_is_exclusive(x_67);
-if (x_89 == 0)
-{
-return x_67;
-}
-else
-{
-lean_object* x_90; lean_object* x_91; lean_object* x_92; 
-x_90 = lean_ctor_get(x_67, 0);
-x_91 = lean_ctor_get(x_67, 1);
-lean_inc(x_91);
-lean_inc(x_90);
-lean_dec(x_67);
-x_92 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_92, 0, x_90);
-lean_ctor_set(x_92, 1, x_91);
-return x_92;
-}
-}
-}
-else
-{
-uint8_t x_93; 
-lean_dec(x_44);
-lean_dec(x_43);
-lean_dec(x_42);
-lean_dec(x_24);
-lean_dec(x_23);
-lean_dec(x_11);
-lean_dec(x_10);
-lean_dec(x_9);
-lean_dec(x_8);
-lean_dec(x_5);
-lean_dec(x_3);
-lean_dec(x_2);
-x_93 = !lean_is_exclusive(x_64);
-if (x_93 == 0)
-{
+lean_dec(x_60);
+x_64 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_64, 0, x_62);
+lean_ctor_set(x_64, 1, x_63);
 return x_64;
 }
+}
+}
 else
 {
-lean_object* x_94; lean_object* x_95; lean_object* x_96; 
-x_94 = lean_ctor_get(x_64, 0);
-x_95 = lean_ctor_get(x_64, 1);
+lean_object* x_65; lean_object* x_66; lean_object* x_67; lean_object* x_68; lean_object* x_69; 
+lean_dec(x_25);
+x_65 = lean_ctor_get(x_30, 1);
+lean_inc(x_65);
+lean_dec(x_30);
+x_66 = lean_ctor_get(x_40, 0);
+lean_inc(x_66);
+lean_dec(x_40);
+x_67 = lean_ctor_get(x_41, 0);
+lean_inc(x_67);
+x_68 = lean_ctor_get(x_41, 1);
+lean_inc(x_68);
+lean_dec(x_41);
+lean_inc(x_11);
+lean_inc(x_10);
+lean_inc(x_9);
+lean_inc(x_8);
+x_69 = l___private_Lean_Meta_AppBuilder_0__Lean_Meta_mkEqSymmImp(x_26, x_8, x_9, x_10, x_11, x_65);
+if (lean_obj_tag(x_69) == 0)
+{
+lean_object* x_70; lean_object* x_71; lean_object* x_72; 
+x_70 = lean_ctor_get(x_69, 0);
+lean_inc(x_70);
+x_71 = lean_ctor_get(x_69, 1);
+lean_inc(x_71);
+lean_dec(x_69);
+lean_inc(x_11);
+lean_inc(x_10);
+lean_inc(x_9);
+lean_inc(x_8);
+lean_inc(x_67);
+lean_inc(x_68);
+x_72 = l___private_Lean_Meta_AppBuilder_0__Lean_Meta_mkEqImp(x_68, x_67, x_8, x_9, x_10, x_11, x_71);
+if (lean_obj_tag(x_72) == 0)
+{
+lean_object* x_73; lean_object* x_74; lean_object* x_75; uint8_t x_76; 
+x_73 = lean_ctor_get(x_72, 0);
+lean_inc(x_73);
+x_74 = lean_ctor_get(x_72, 1);
+lean_inc(x_74);
+lean_dec(x_72);
+x_75 = l_Lean_Expr_getAppFn(x_68);
+x_76 = l_Lean_Expr_isMVar(x_75);
+lean_dec(x_75);
+if (x_76 == 0)
+{
+lean_object* x_77; lean_object* x_78; 
+lean_dec(x_73);
+x_77 = lean_box(0);
+x_78 = l_Lean_Meta_rewrite___lambda__3(x_5, x_68, x_6, x_67, x_66, x_70, x_2, x_3, x_23, x_24, x_77, x_8, x_9, x_10, x_11, x_74);
+lean_dec(x_24);
+lean_dec(x_23);
+lean_dec(x_67);
+return x_78;
+}
+else
+{
+lean_object* x_79; lean_object* x_80; lean_object* x_81; lean_object* x_82; lean_object* x_83; lean_object* x_84; lean_object* x_85; lean_object* x_86; lean_object* x_87; lean_object* x_88; lean_object* x_89; uint8_t x_90; 
+lean_dec(x_70);
+lean_dec(x_67);
+lean_dec(x_66);
+lean_dec(x_24);
+lean_dec(x_23);
+lean_dec(x_5);
+x_79 = l_Lean_indentExpr(x_68);
+x_80 = l_Lean_Meta_rewrite___lambda__4___closed__4;
+x_81 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_81, 0, x_80);
+lean_ctor_set(x_81, 1, x_79);
+x_82 = l_Lean_Meta_rewrite___lambda__4___closed__6;
+x_83 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_83, 0, x_81);
+lean_ctor_set(x_83, 1, x_82);
+x_84 = l_Lean_indentExpr(x_73);
+x_85 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_85, 0, x_83);
+lean_ctor_set(x_85, 1, x_84);
+x_86 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
+x_87 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_87, 0, x_85);
+lean_ctor_set(x_87, 1, x_86);
+x_88 = lean_box(0);
+x_89 = l_Lean_Meta_throwTacticEx___rarg(x_2, x_3, x_87, x_88, x_8, x_9, x_10, x_11, x_74);
+lean_dec(x_11);
+lean_dec(x_10);
+lean_dec(x_9);
+lean_dec(x_8);
+x_90 = !lean_is_exclusive(x_89);
+if (x_90 == 0)
+{
+return x_89;
+}
+else
+{
+lean_object* x_91; lean_object* x_92; lean_object* x_93; 
+x_91 = lean_ctor_get(x_89, 0);
+x_92 = lean_ctor_get(x_89, 1);
+lean_inc(x_92);
+lean_inc(x_91);
+lean_dec(x_89);
+x_93 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_93, 0, x_91);
+lean_ctor_set(x_93, 1, x_92);
+return x_93;
+}
+}
+}
+else
+{
+uint8_t x_94; 
+lean_dec(x_70);
+lean_dec(x_68);
+lean_dec(x_67);
+lean_dec(x_66);
+lean_dec(x_24);
+lean_dec(x_23);
+lean_dec(x_11);
+lean_dec(x_10);
+lean_dec(x_9);
+lean_dec(x_8);
+lean_dec(x_5);
+lean_dec(x_3);
+lean_dec(x_2);
+x_94 = !lean_is_exclusive(x_72);
+if (x_94 == 0)
+{
+return x_72;
+}
+else
+{
+lean_object* x_95; lean_object* x_96; lean_object* x_97; 
+x_95 = lean_ctor_get(x_72, 0);
+x_96 = lean_ctor_get(x_72, 1);
+lean_inc(x_96);
 lean_inc(x_95);
-lean_inc(x_94);
-lean_dec(x_64);
-x_96 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_96, 0, x_94);
-lean_ctor_set(x_96, 1, x_95);
-return x_96;
+lean_dec(x_72);
+x_97 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_97, 0, x_95);
+lean_ctor_set(x_97, 1, x_96);
+return x_97;
+}
+}
+}
+else
+{
+uint8_t x_98; 
+lean_dec(x_68);
+lean_dec(x_67);
+lean_dec(x_66);
+lean_dec(x_24);
+lean_dec(x_23);
+lean_dec(x_11);
+lean_dec(x_10);
+lean_dec(x_9);
+lean_dec(x_8);
+lean_dec(x_5);
+lean_dec(x_3);
+lean_dec(x_2);
+x_98 = !lean_is_exclusive(x_69);
+if (x_98 == 0)
+{
+return x_69;
+}
+else
+{
+lean_object* x_99; lean_object* x_100; lean_object* x_101; 
+x_99 = lean_ctor_get(x_69, 0);
+x_100 = lean_ctor_get(x_69, 1);
+lean_inc(x_100);
+lean_inc(x_99);
+lean_dec(x_69);
+x_101 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_101, 0, x_99);
+lean_ctor_set(x_101, 1, x_100);
+return x_101;
 }
 }
 }
@@ -1868,275 +1899,305 @@ return x_96;
 }
 else
 {
-lean_object* x_97; lean_object* x_98; lean_object* x_99; lean_object* x_100; 
-x_97 = l_Lean_Expr_appFn_x21(x_25);
-x_98 = l_Lean_Expr_appArg_x21(x_97);
-lean_dec(x_97);
-x_99 = l_Lean_Expr_appArg_x21(x_25);
+uint8_t x_102; 
+lean_dec(x_26);
+lean_dec(x_25);
+lean_dec(x_24);
+lean_dec(x_23);
+lean_dec(x_11);
+lean_dec(x_10);
+lean_dec(x_9);
+lean_dec(x_8);
+lean_dec(x_5);
+lean_dec(x_3);
+lean_dec(x_2);
+x_102 = !lean_is_exclusive(x_30);
+if (x_102 == 0)
+{
+return x_30;
+}
+else
+{
+lean_object* x_103; lean_object* x_104; lean_object* x_105; 
+x_103 = lean_ctor_get(x_30, 0);
+x_104 = lean_ctor_get(x_30, 1);
+lean_inc(x_104);
+lean_inc(x_103);
+lean_dec(x_30);
+x_105 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_105, 0, x_103);
+lean_ctor_set(x_105, 1, x_104);
+return x_105;
+}
+}
+}
+else
+{
+lean_object* x_106; lean_object* x_107; lean_object* x_108; lean_object* x_109; 
+x_106 = l_Lean_Expr_appFn_x21(x_25);
+x_107 = l_Lean_Expr_appArg_x21(x_106);
+lean_dec(x_106);
+x_108 = l_Lean_Expr_appArg_x21(x_25);
 lean_dec(x_25);
 lean_inc(x_11);
 lean_inc(x_10);
 lean_inc(x_9);
 lean_inc(x_8);
-lean_inc(x_99);
-lean_inc(x_98);
-x_100 = l___private_Lean_Meta_AppBuilder_0__Lean_Meta_mkEqImp(x_98, x_99, x_8, x_9, x_10, x_11, x_22);
-if (lean_obj_tag(x_100) == 0)
+lean_inc(x_108);
+lean_inc(x_107);
+x_109 = l___private_Lean_Meta_AppBuilder_0__Lean_Meta_mkEqImp(x_107, x_108, x_8, x_9, x_10, x_11, x_22);
+if (lean_obj_tag(x_109) == 0)
 {
-lean_object* x_101; lean_object* x_102; lean_object* x_103; lean_object* x_104; lean_object* x_105; lean_object* x_106; uint8_t x_107; 
-x_101 = lean_ctor_get(x_100, 0);
-lean_inc(x_101);
-x_102 = lean_ctor_get(x_100, 1);
-lean_inc(x_102);
-lean_dec(x_100);
-x_103 = l_Lean_Meta_rewrite___lambda__4___closed__9;
-x_104 = l_Lean_mkApp3(x_103, x_98, x_99, x_26);
-x_105 = l_Lean_Expr_eq_x3f___closed__2;
-x_106 = lean_unsigned_to_nat(3u);
-x_107 = l_Lean_Expr_isAppOfArity(x_101, x_105, x_106);
-if (x_107 == 0)
+lean_object* x_110; lean_object* x_111; lean_object* x_112; lean_object* x_113; lean_object* x_114; 
+x_110 = lean_ctor_get(x_109, 0);
+lean_inc(x_110);
+x_111 = lean_ctor_get(x_109, 1);
+lean_inc(x_111);
+lean_dec(x_109);
+x_112 = l_Lean_Meta_rewrite___lambda__4___closed__9;
+x_113 = l_Lean_mkApp3(x_112, x_107, x_108, x_26);
+lean_inc(x_11);
+lean_inc(x_10);
+lean_inc(x_9);
+lean_inc(x_8);
+lean_inc(x_110);
+x_114 = l_Lean_Meta_matchEq_x3f(x_110, x_8, x_9, x_10, x_11, x_111);
+if (lean_obj_tag(x_114) == 0)
 {
-lean_object* x_108; lean_object* x_109; lean_object* x_110; lean_object* x_111; lean_object* x_112; lean_object* x_113; lean_object* x_114; 
-lean_dec(x_104);
+lean_object* x_115; 
+x_115 = lean_ctor_get(x_114, 0);
+lean_inc(x_115);
+if (lean_obj_tag(x_115) == 0)
+{
+lean_object* x_116; lean_object* x_117; lean_object* x_118; lean_object* x_119; lean_object* x_120; lean_object* x_121; lean_object* x_122; lean_object* x_123; 
+lean_dec(x_113);
 lean_dec(x_24);
 lean_dec(x_23);
 lean_dec(x_5);
-x_108 = l_Lean_indentExpr(x_101);
-x_109 = l_Lean_Meta_rewrite___lambda__4___closed__2;
-x_110 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_110, 0, x_109);
-lean_ctor_set(x_110, 1, x_108);
-x_111 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
-x_112 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_112, 0, x_110);
-lean_ctor_set(x_112, 1, x_111);
-x_113 = lean_box(0);
-x_114 = l_Lean_Meta_throwTacticEx___rarg(x_2, x_3, x_112, x_113, x_8, x_9, x_10, x_11, x_102);
+x_116 = lean_ctor_get(x_114, 1);
+lean_inc(x_116);
+lean_dec(x_114);
+x_117 = l_Lean_indentExpr(x_110);
+x_118 = l_Lean_Meta_rewrite___lambda__4___closed__2;
+x_119 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_119, 0, x_118);
+lean_ctor_set(x_119, 1, x_117);
+x_120 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
+x_121 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_121, 0, x_119);
+lean_ctor_set(x_121, 1, x_120);
+x_122 = lean_box(0);
+x_123 = l_Lean_Meta_throwTacticEx___rarg(x_2, x_3, x_121, x_122, x_8, x_9, x_10, x_11, x_116);
 lean_dec(x_11);
 lean_dec(x_10);
 lean_dec(x_9);
 lean_dec(x_8);
-return x_114;
-}
-else
-{
-lean_object* x_115; lean_object* x_116; lean_object* x_117; lean_object* x_118; lean_object* x_119; 
-x_115 = l_Lean_Expr_appFn_x21(x_101);
-x_116 = l_Lean_Expr_appFn_x21(x_115);
-x_117 = l_Lean_Expr_appArg_x21(x_116);
-lean_dec(x_116);
-x_118 = l_Lean_Expr_appArg_x21(x_115);
-lean_dec(x_115);
-x_119 = l_Lean_Expr_appArg_x21(x_101);
-if (x_4 == 0)
-{
-lean_object* x_120; uint8_t x_121; 
-x_120 = l_Lean_Expr_getAppFn(x_118);
-x_121 = l_Lean_Expr_isMVar(x_120);
-lean_dec(x_120);
-if (x_121 == 0)
-{
-lean_object* x_122; lean_object* x_123; 
-lean_dec(x_101);
-x_122 = lean_box(0);
-x_123 = l_Lean_Meta_rewrite___lambda__3(x_5, x_118, x_6, x_119, x_117, x_104, x_2, x_3, x_23, x_24, x_122, x_8, x_9, x_10, x_11, x_102);
-lean_dec(x_24);
-lean_dec(x_23);
-lean_dec(x_119);
 return x_123;
 }
 else
 {
-lean_object* x_124; lean_object* x_125; lean_object* x_126; lean_object* x_127; lean_object* x_128; lean_object* x_129; lean_object* x_130; lean_object* x_131; lean_object* x_132; lean_object* x_133; lean_object* x_134; uint8_t x_135; 
-lean_dec(x_119);
-lean_dec(x_117);
-lean_dec(x_104);
+lean_object* x_124; lean_object* x_125; 
+x_124 = lean_ctor_get(x_115, 0);
+lean_inc(x_124);
+lean_dec(x_115);
+x_125 = lean_ctor_get(x_124, 1);
+lean_inc(x_125);
+if (x_4 == 0)
+{
+lean_object* x_126; lean_object* x_127; lean_object* x_128; lean_object* x_129; lean_object* x_130; uint8_t x_131; 
+x_126 = lean_ctor_get(x_114, 1);
+lean_inc(x_126);
+lean_dec(x_114);
+x_127 = lean_ctor_get(x_124, 0);
+lean_inc(x_127);
+lean_dec(x_124);
+x_128 = lean_ctor_get(x_125, 0);
+lean_inc(x_128);
+x_129 = lean_ctor_get(x_125, 1);
+lean_inc(x_129);
+lean_dec(x_125);
+x_130 = l_Lean_Expr_getAppFn(x_128);
+x_131 = l_Lean_Expr_isMVar(x_130);
+lean_dec(x_130);
+if (x_131 == 0)
+{
+lean_object* x_132; lean_object* x_133; 
+lean_dec(x_110);
+x_132 = lean_box(0);
+x_133 = l_Lean_Meta_rewrite___lambda__3(x_5, x_128, x_6, x_129, x_127, x_113, x_2, x_3, x_23, x_24, x_132, x_8, x_9, x_10, x_11, x_126);
 lean_dec(x_24);
 lean_dec(x_23);
-lean_dec(x_5);
-x_124 = l_Lean_indentExpr(x_118);
-x_125 = l_Lean_Meta_rewrite___lambda__4___closed__4;
-x_126 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_126, 0, x_125);
-lean_ctor_set(x_126, 1, x_124);
-x_127 = l_Lean_Meta_rewrite___lambda__4___closed__6;
-x_128 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_128, 0, x_126);
-lean_ctor_set(x_128, 1, x_127);
-x_129 = l_Lean_indentExpr(x_101);
-x_130 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_130, 0, x_128);
-lean_ctor_set(x_130, 1, x_129);
-x_131 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
-x_132 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_132, 0, x_130);
-lean_ctor_set(x_132, 1, x_131);
-x_133 = lean_box(0);
-x_134 = l_Lean_Meta_throwTacticEx___rarg(x_2, x_3, x_132, x_133, x_8, x_9, x_10, x_11, x_102);
-lean_dec(x_11);
-lean_dec(x_10);
-lean_dec(x_9);
-lean_dec(x_8);
-x_135 = !lean_is_exclusive(x_134);
-if (x_135 == 0)
-{
-return x_134;
+lean_dec(x_129);
+return x_133;
 }
 else
 {
-lean_object* x_136; lean_object* x_137; lean_object* x_138; 
-x_136 = lean_ctor_get(x_134, 0);
-x_137 = lean_ctor_get(x_134, 1);
-lean_inc(x_137);
-lean_inc(x_136);
-lean_dec(x_134);
-x_138 = lean_alloc_ctor(1, 2, 0);
+lean_object* x_134; lean_object* x_135; lean_object* x_136; lean_object* x_137; lean_object* x_138; lean_object* x_139; lean_object* x_140; lean_object* x_141; lean_object* x_142; lean_object* x_143; lean_object* x_144; uint8_t x_145; 
+lean_dec(x_129);
+lean_dec(x_127);
+lean_dec(x_113);
+lean_dec(x_24);
+lean_dec(x_23);
+lean_dec(x_5);
+x_134 = l_Lean_indentExpr(x_128);
+x_135 = l_Lean_Meta_rewrite___lambda__4___closed__4;
+x_136 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_136, 0, x_135);
+lean_ctor_set(x_136, 1, x_134);
+x_137 = l_Lean_Meta_rewrite___lambda__4___closed__6;
+x_138 = lean_alloc_ctor(10, 2, 0);
 lean_ctor_set(x_138, 0, x_136);
 lean_ctor_set(x_138, 1, x_137);
-return x_138;
-}
-}
+x_139 = l_Lean_indentExpr(x_110);
+x_140 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_140, 0, x_138);
+lean_ctor_set(x_140, 1, x_139);
+x_141 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
+x_142 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_142, 0, x_140);
+lean_ctor_set(x_142, 1, x_141);
+x_143 = lean_box(0);
+x_144 = l_Lean_Meta_throwTacticEx___rarg(x_2, x_3, x_142, x_143, x_8, x_9, x_10, x_11, x_126);
+lean_dec(x_11);
+lean_dec(x_10);
+lean_dec(x_9);
+lean_dec(x_8);
+x_145 = !lean_is_exclusive(x_144);
+if (x_145 == 0)
+{
+return x_144;
 }
 else
 {
-lean_object* x_139; 
-lean_dec(x_101);
-lean_inc(x_11);
-lean_inc(x_10);
-lean_inc(x_9);
-lean_inc(x_8);
-x_139 = l___private_Lean_Meta_AppBuilder_0__Lean_Meta_mkEqSymmImp(x_104, x_8, x_9, x_10, x_11, x_102);
-if (lean_obj_tag(x_139) == 0)
-{
-lean_object* x_140; lean_object* x_141; lean_object* x_142; 
-x_140 = lean_ctor_get(x_139, 0);
-lean_inc(x_140);
-x_141 = lean_ctor_get(x_139, 1);
-lean_inc(x_141);
-lean_dec(x_139);
-lean_inc(x_11);
-lean_inc(x_10);
-lean_inc(x_9);
-lean_inc(x_8);
-lean_inc(x_118);
-lean_inc(x_119);
-x_142 = l___private_Lean_Meta_AppBuilder_0__Lean_Meta_mkEqImp(x_119, x_118, x_8, x_9, x_10, x_11, x_141);
-if (lean_obj_tag(x_142) == 0)
-{
-lean_object* x_143; lean_object* x_144; lean_object* x_145; uint8_t x_146; 
-x_143 = lean_ctor_get(x_142, 0);
-lean_inc(x_143);
-x_144 = lean_ctor_get(x_142, 1);
-lean_inc(x_144);
-lean_dec(x_142);
-x_145 = l_Lean_Expr_getAppFn(x_119);
-x_146 = l_Lean_Expr_isMVar(x_145);
-lean_dec(x_145);
-if (x_146 == 0)
-{
-lean_object* x_147; lean_object* x_148; 
-lean_dec(x_143);
-x_147 = lean_box(0);
-x_148 = l_Lean_Meta_rewrite___lambda__3(x_5, x_119, x_6, x_118, x_117, x_140, x_2, x_3, x_23, x_24, x_147, x_8, x_9, x_10, x_11, x_144);
-lean_dec(x_24);
-lean_dec(x_23);
-lean_dec(x_118);
+lean_object* x_146; lean_object* x_147; lean_object* x_148; 
+x_146 = lean_ctor_get(x_144, 0);
+x_147 = lean_ctor_get(x_144, 1);
+lean_inc(x_147);
+lean_inc(x_146);
+lean_dec(x_144);
+x_148 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_148, 0, x_146);
+lean_ctor_set(x_148, 1, x_147);
 return x_148;
 }
+}
+}
 else
 {
-lean_object* x_149; lean_object* x_150; lean_object* x_151; lean_object* x_152; lean_object* x_153; lean_object* x_154; lean_object* x_155; lean_object* x_156; lean_object* x_157; lean_object* x_158; lean_object* x_159; uint8_t x_160; 
-lean_dec(x_140);
-lean_dec(x_118);
-lean_dec(x_117);
-lean_dec(x_24);
-lean_dec(x_23);
-lean_dec(x_5);
-x_149 = l_Lean_indentExpr(x_119);
-x_150 = l_Lean_Meta_rewrite___lambda__4___closed__4;
-x_151 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_151, 0, x_150);
-lean_ctor_set(x_151, 1, x_149);
-x_152 = l_Lean_Meta_rewrite___lambda__4___closed__6;
-x_153 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_153, 0, x_151);
-lean_ctor_set(x_153, 1, x_152);
-x_154 = l_Lean_indentExpr(x_143);
-x_155 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_155, 0, x_153);
-lean_ctor_set(x_155, 1, x_154);
-x_156 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
-x_157 = lean_alloc_ctor(10, 2, 0);
-lean_ctor_set(x_157, 0, x_155);
-lean_ctor_set(x_157, 1, x_156);
-x_158 = lean_box(0);
-x_159 = l_Lean_Meta_throwTacticEx___rarg(x_2, x_3, x_157, x_158, x_8, x_9, x_10, x_11, x_144);
-lean_dec(x_11);
-lean_dec(x_10);
-lean_dec(x_9);
-lean_dec(x_8);
-x_160 = !lean_is_exclusive(x_159);
+lean_object* x_149; lean_object* x_150; lean_object* x_151; lean_object* x_152; lean_object* x_153; 
+lean_dec(x_110);
+x_149 = lean_ctor_get(x_114, 1);
+lean_inc(x_149);
+lean_dec(x_114);
+x_150 = lean_ctor_get(x_124, 0);
+lean_inc(x_150);
+lean_dec(x_124);
+x_151 = lean_ctor_get(x_125, 0);
+lean_inc(x_151);
+x_152 = lean_ctor_get(x_125, 1);
+lean_inc(x_152);
+lean_dec(x_125);
+lean_inc(x_11);
+lean_inc(x_10);
+lean_inc(x_9);
+lean_inc(x_8);
+x_153 = l___private_Lean_Meta_AppBuilder_0__Lean_Meta_mkEqSymmImp(x_113, x_8, x_9, x_10, x_11, x_149);
+if (lean_obj_tag(x_153) == 0)
+{
+lean_object* x_154; lean_object* x_155; lean_object* x_156; 
+x_154 = lean_ctor_get(x_153, 0);
+lean_inc(x_154);
+x_155 = lean_ctor_get(x_153, 1);
+lean_inc(x_155);
+lean_dec(x_153);
+lean_inc(x_11);
+lean_inc(x_10);
+lean_inc(x_9);
+lean_inc(x_8);
+lean_inc(x_151);
+lean_inc(x_152);
+x_156 = l___private_Lean_Meta_AppBuilder_0__Lean_Meta_mkEqImp(x_152, x_151, x_8, x_9, x_10, x_11, x_155);
+if (lean_obj_tag(x_156) == 0)
+{
+lean_object* x_157; lean_object* x_158; lean_object* x_159; uint8_t x_160; 
+x_157 = lean_ctor_get(x_156, 0);
+lean_inc(x_157);
+x_158 = lean_ctor_get(x_156, 1);
+lean_inc(x_158);
+lean_dec(x_156);
+x_159 = l_Lean_Expr_getAppFn(x_152);
+x_160 = l_Lean_Expr_isMVar(x_159);
+lean_dec(x_159);
 if (x_160 == 0)
 {
-return x_159;
-}
-else
-{
-lean_object* x_161; lean_object* x_162; lean_object* x_163; 
-x_161 = lean_ctor_get(x_159, 0);
-x_162 = lean_ctor_get(x_159, 1);
-lean_inc(x_162);
-lean_inc(x_161);
-lean_dec(x_159);
-x_163 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_163, 0, x_161);
-lean_ctor_set(x_163, 1, x_162);
-return x_163;
-}
-}
-}
-else
-{
-uint8_t x_164; 
-lean_dec(x_140);
-lean_dec(x_119);
-lean_dec(x_118);
-lean_dec(x_117);
+lean_object* x_161; lean_object* x_162; 
+lean_dec(x_157);
+x_161 = lean_box(0);
+x_162 = l_Lean_Meta_rewrite___lambda__3(x_5, x_152, x_6, x_151, x_150, x_154, x_2, x_3, x_23, x_24, x_161, x_8, x_9, x_10, x_11, x_158);
 lean_dec(x_24);
 lean_dec(x_23);
-lean_dec(x_11);
-lean_dec(x_10);
-lean_dec(x_9);
-lean_dec(x_8);
-lean_dec(x_5);
-lean_dec(x_3);
-lean_dec(x_2);
-x_164 = !lean_is_exclusive(x_142);
-if (x_164 == 0)
-{
-return x_142;
+lean_dec(x_151);
+return x_162;
 }
 else
 {
-lean_object* x_165; lean_object* x_166; lean_object* x_167; 
-x_165 = lean_ctor_get(x_142, 0);
-x_166 = lean_ctor_get(x_142, 1);
-lean_inc(x_166);
-lean_inc(x_165);
-lean_dec(x_142);
-x_167 = lean_alloc_ctor(1, 2, 0);
+lean_object* x_163; lean_object* x_164; lean_object* x_165; lean_object* x_166; lean_object* x_167; lean_object* x_168; lean_object* x_169; lean_object* x_170; lean_object* x_171; lean_object* x_172; lean_object* x_173; uint8_t x_174; 
+lean_dec(x_154);
+lean_dec(x_151);
+lean_dec(x_150);
+lean_dec(x_24);
+lean_dec(x_23);
+lean_dec(x_5);
+x_163 = l_Lean_indentExpr(x_152);
+x_164 = l_Lean_Meta_rewrite___lambda__4___closed__4;
+x_165 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_165, 0, x_164);
+lean_ctor_set(x_165, 1, x_163);
+x_166 = l_Lean_Meta_rewrite___lambda__4___closed__6;
+x_167 = lean_alloc_ctor(10, 2, 0);
 lean_ctor_set(x_167, 0, x_165);
 lean_ctor_set(x_167, 1, x_166);
-return x_167;
+x_168 = l_Lean_indentExpr(x_157);
+x_169 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_169, 0, x_167);
+lean_ctor_set(x_169, 1, x_168);
+x_170 = l_Array_foldlMUnsafe_fold___at_Lean_withNestedTraces___spec__5___closed__1;
+x_171 = lean_alloc_ctor(10, 2, 0);
+lean_ctor_set(x_171, 0, x_169);
+lean_ctor_set(x_171, 1, x_170);
+x_172 = lean_box(0);
+x_173 = l_Lean_Meta_throwTacticEx___rarg(x_2, x_3, x_171, x_172, x_8, x_9, x_10, x_11, x_158);
+lean_dec(x_11);
+lean_dec(x_10);
+lean_dec(x_9);
+lean_dec(x_8);
+x_174 = !lean_is_exclusive(x_173);
+if (x_174 == 0)
+{
+return x_173;
+}
+else
+{
+lean_object* x_175; lean_object* x_176; lean_object* x_177; 
+x_175 = lean_ctor_get(x_173, 0);
+x_176 = lean_ctor_get(x_173, 1);
+lean_inc(x_176);
+lean_inc(x_175);
+lean_dec(x_173);
+x_177 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_177, 0, x_175);
+lean_ctor_set(x_177, 1, x_176);
+return x_177;
 }
 }
 }
 else
 {
-uint8_t x_168; 
-lean_dec(x_119);
-lean_dec(x_118);
-lean_dec(x_117);
+uint8_t x_178; 
+lean_dec(x_154);
+lean_dec(x_152);
+lean_dec(x_151);
+lean_dec(x_150);
 lean_dec(x_24);
 lean_dec(x_23);
 lean_dec(x_11);
@@ -2146,23 +2207,58 @@ lean_dec(x_8);
 lean_dec(x_5);
 lean_dec(x_3);
 lean_dec(x_2);
-x_168 = !lean_is_exclusive(x_139);
-if (x_168 == 0)
+x_178 = !lean_is_exclusive(x_156);
+if (x_178 == 0)
 {
-return x_139;
+return x_156;
 }
 else
 {
-lean_object* x_169; lean_object* x_170; lean_object* x_171; 
-x_169 = lean_ctor_get(x_139, 0);
-x_170 = lean_ctor_get(x_139, 1);
-lean_inc(x_170);
-lean_inc(x_169);
-lean_dec(x_139);
-x_171 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_171, 0, x_169);
-lean_ctor_set(x_171, 1, x_170);
-return x_171;
+lean_object* x_179; lean_object* x_180; lean_object* x_181; 
+x_179 = lean_ctor_get(x_156, 0);
+x_180 = lean_ctor_get(x_156, 1);
+lean_inc(x_180);
+lean_inc(x_179);
+lean_dec(x_156);
+x_181 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_181, 0, x_179);
+lean_ctor_set(x_181, 1, x_180);
+return x_181;
+}
+}
+}
+else
+{
+uint8_t x_182; 
+lean_dec(x_152);
+lean_dec(x_151);
+lean_dec(x_150);
+lean_dec(x_24);
+lean_dec(x_23);
+lean_dec(x_11);
+lean_dec(x_10);
+lean_dec(x_9);
+lean_dec(x_8);
+lean_dec(x_5);
+lean_dec(x_3);
+lean_dec(x_2);
+x_182 = !lean_is_exclusive(x_153);
+if (x_182 == 0)
+{
+return x_153;
+}
+else
+{
+lean_object* x_183; lean_object* x_184; lean_object* x_185; 
+x_183 = lean_ctor_get(x_153, 0);
+x_184 = lean_ctor_get(x_153, 1);
+lean_inc(x_184);
+lean_inc(x_183);
+lean_dec(x_153);
+x_185 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_185, 0, x_183);
+lean_ctor_set(x_185, 1, x_184);
+return x_185;
 }
 }
 }
@@ -2170,9 +2266,43 @@ return x_171;
 }
 else
 {
-uint8_t x_172; 
-lean_dec(x_99);
-lean_dec(x_98);
+uint8_t x_186; 
+lean_dec(x_113);
+lean_dec(x_110);
+lean_dec(x_24);
+lean_dec(x_23);
+lean_dec(x_11);
+lean_dec(x_10);
+lean_dec(x_9);
+lean_dec(x_8);
+lean_dec(x_5);
+lean_dec(x_3);
+lean_dec(x_2);
+x_186 = !lean_is_exclusive(x_114);
+if (x_186 == 0)
+{
+return x_114;
+}
+else
+{
+lean_object* x_187; lean_object* x_188; lean_object* x_189; 
+x_187 = lean_ctor_get(x_114, 0);
+x_188 = lean_ctor_get(x_114, 1);
+lean_inc(x_188);
+lean_inc(x_187);
+lean_dec(x_114);
+x_189 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_189, 0, x_187);
+lean_ctor_set(x_189, 1, x_188);
+return x_189;
+}
+}
+}
+else
+{
+uint8_t x_190; 
+lean_dec(x_108);
+lean_dec(x_107);
 lean_dec(x_26);
 lean_dec(x_24);
 lean_dec(x_23);
@@ -2183,30 +2313,30 @@ lean_dec(x_8);
 lean_dec(x_5);
 lean_dec(x_3);
 lean_dec(x_2);
-x_172 = !lean_is_exclusive(x_100);
-if (x_172 == 0)
+x_190 = !lean_is_exclusive(x_109);
+if (x_190 == 0)
 {
-return x_100;
+return x_109;
 }
 else
 {
-lean_object* x_173; lean_object* x_174; lean_object* x_175; 
-x_173 = lean_ctor_get(x_100, 0);
-x_174 = lean_ctor_get(x_100, 1);
-lean_inc(x_174);
-lean_inc(x_173);
-lean_dec(x_100);
-x_175 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_175, 0, x_173);
-lean_ctor_set(x_175, 1, x_174);
-return x_175;
+lean_object* x_191; lean_object* x_192; lean_object* x_193; 
+x_191 = lean_ctor_get(x_109, 0);
+x_192 = lean_ctor_get(x_109, 1);
+lean_inc(x_192);
+lean_inc(x_191);
+lean_dec(x_109);
+x_193 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_193, 0, x_191);
+lean_ctor_set(x_193, 1, x_192);
+return x_193;
 }
 }
 }
 }
 else
 {
-uint8_t x_176; 
+uint8_t x_194; 
 lean_dec(x_11);
 lean_dec(x_10);
 lean_dec(x_9);
@@ -2215,29 +2345,29 @@ lean_dec(x_5);
 lean_dec(x_3);
 lean_dec(x_2);
 lean_dec(x_1);
-x_176 = !lean_is_exclusive(x_19);
-if (x_176 == 0)
+x_194 = !lean_is_exclusive(x_19);
+if (x_194 == 0)
 {
 return x_19;
 }
 else
 {
-lean_object* x_177; lean_object* x_178; lean_object* x_179; 
-x_177 = lean_ctor_get(x_19, 0);
-x_178 = lean_ctor_get(x_19, 1);
-lean_inc(x_178);
-lean_inc(x_177);
+lean_object* x_195; lean_object* x_196; lean_object* x_197; 
+x_195 = lean_ctor_get(x_19, 0);
+x_196 = lean_ctor_get(x_19, 1);
+lean_inc(x_196);
+lean_inc(x_195);
 lean_dec(x_19);
-x_179 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_179, 0, x_177);
-lean_ctor_set(x_179, 1, x_178);
-return x_179;
+x_197 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_197, 0, x_195);
+lean_ctor_set(x_197, 1, x_196);
+return x_197;
 }
 }
 }
 else
 {
-uint8_t x_180; 
+uint8_t x_198; 
 lean_dec(x_11);
 lean_dec(x_10);
 lean_dec(x_9);
@@ -2246,23 +2376,23 @@ lean_dec(x_5);
 lean_dec(x_3);
 lean_dec(x_2);
 lean_dec(x_1);
-x_180 = !lean_is_exclusive(x_13);
-if (x_180 == 0)
+x_198 = !lean_is_exclusive(x_13);
+if (x_198 == 0)
 {
 return x_13;
 }
 else
 {
-lean_object* x_181; lean_object* x_182; lean_object* x_183; 
-x_181 = lean_ctor_get(x_13, 0);
-x_182 = lean_ctor_get(x_13, 1);
-lean_inc(x_182);
-lean_inc(x_181);
+lean_object* x_199; lean_object* x_200; lean_object* x_201; 
+x_199 = lean_ctor_get(x_13, 0);
+x_200 = lean_ctor_get(x_13, 1);
+lean_inc(x_200);
+lean_inc(x_199);
 lean_dec(x_13);
-x_183 = lean_alloc_ctor(1, 2, 0);
-lean_ctor_set(x_183, 0, x_181);
-lean_ctor_set(x_183, 1, x_182);
-return x_183;
+x_201 = lean_alloc_ctor(1, 2, 0);
+lean_ctor_set(x_201, 0, x_199);
+lean_ctor_set(x_201, 1, x_200);
+return x_201;
 }
 }
 }
@@ -2396,6 +2526,7 @@ return x_12;
 }
 lean_object* initialize_Init(lean_object*);
 lean_object* initialize_Lean_Meta_AppBuilder(lean_object*);
+lean_object* initialize_Lean_Meta_MatchUtil(lean_object*);
 lean_object* initialize_Lean_Meta_KAbstract(lean_object*);
 lean_object* initialize_Lean_Meta_Check(lean_object*);
 lean_object* initialize_Lean_Meta_Tactic_Apply(lean_object*);
@@ -2410,6 +2541,9 @@ lean_dec_ref(res);
 res = initialize_Lean_Meta_AppBuilder(lean_io_mk_world());
 if (lean_io_result_is_error(res)) return res;
 lean_dec_ref(res);
+res = initialize_Lean_Meta_MatchUtil(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
 res = initialize_Lean_Meta_KAbstract(lean_io_mk_world());
 if (lean_io_result_is_error(res)) return res;
 lean_dec_ref(res);
diff --git a/stage0/stdlib/Lean/Parser/Do.c b/stage0/stdlib/Lean/Parser/Do.c
index a4296300e1..207b0ccb59 100644
--- a/stage0/stdlib/Lean/Parser/Do.c
+++ b/stage0/stdlib/Lean/Parser/Do.c
@@ -20,6 +20,7 @@ lean_object* l_Lean_PrettyPrinter_Parenthesizer_visitToken___rarg(lean_object*,
 lean_object* l___regBuiltin_Lean_Parser_Term_doBreak_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doExpr___closed__1;
 extern lean_object* l_Lean_Parser_Term_subtype_parenthesizer___closed__6;
+lean_object* l_Lean_Parser_Term_termReturn___closed__1;
 lean_object* l_Lean_Parser_Term_liftMethod_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doSeqBracketed_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doIf_parenthesizer___closed__9;
@@ -46,6 +47,8 @@ lean_object* l_Lean_Parser_Term_doIdDecl___elambda__1___closed__7;
 lean_object* l_Lean_Parser_Term_doReassignArrow___elambda__1___closed__6;
 lean_object* l_Lean_PrettyPrinter_Parenthesizer_categoryParser_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 extern lean_object* l_Lean_Parser_Term_optIdent___closed__3;
+lean_object* l_Lean_Parser_Term_termTry___closed__2;
+lean_object* l_Lean_Parser_Term_termUnless___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doIdDecl___elambda__1___closed__1;
 lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doPatDecl___closed__11;
@@ -85,6 +88,7 @@ lean_object* l_Lean_Parser_Term_doIf_formatter___closed__20;
 lean_object* l_Lean_Parser_Term_liftMethod___elambda__1___closed__6;
 extern lean_object* l_Lean_nullKind;
 lean_object* l_Lean_Parser_Term_doMatch_formatter___closed__6;
+lean_object* l_Lean_Parser_Term_termTry___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_doReassign___elambda__1___closed__1;
 lean_object* l___regBuiltinParser_Lean_Parser_Term_doHave(lean_object*);
 extern lean_object* l_Lean_Parser_Term_letrec___elambda__1___closed__6;
@@ -93,6 +97,7 @@ extern lean_object* l_Lean_Parser_leadPrec;
 lean_object* l_Lean_Parser_Term_doReassignArrow___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_doFor___elambda__1___closed__9;
 lean_object* l_Lean_Parser_Term_doExpr___closed__2;
+lean_object* l_Lean_Parser_Term_termFor_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 extern lean_object* l_Lean_Parser_Term_matchAlts___closed__13;
 lean_object* l_Lean_Parser_Term_doTry___closed__4;
 lean_object* l_Lean_Parser_Term_doLetArrow___closed__1;
@@ -130,9 +135,11 @@ lean_object* l_Lean_Parser_Term_doReassignArrow___elambda__1___closed__1;
 lean_object* l_Lean_Parser_Term_doFor_formatter___closed__6;
 lean_object* l_Lean_Parser_Term_doCatchMatch_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doCatch___closed__4;
+lean_object* l_Lean_Parser_Term_termUnless_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doMatch;
 lean_object* l_Lean_Parser_Term_doUnless_parenthesizer___closed__6;
 lean_object* l_Lean_Parser_Term_doIf_formatter___closed__12;
+lean_object* l_Lean_Parser_Term_termReturn___closed__2;
 lean_object* l_Lean_Parser_Term_doMatchAlts___closed__1;
 lean_object* l_Lean_Parser_Term_doFinally___elambda__1___closed__7;
 lean_object* l_Lean_PrettyPrinter_Parenthesizer_orelse_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
@@ -148,6 +155,7 @@ lean_object* l_Lean_Parser_Term_doMatch_parenthesizer(lean_object*, lean_object*
 extern lean_object* l___regBuiltin_Lean_Parser_Term_ident_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doReturn___closed__4;
 lean_object* l_Lean_Parser_Term_do___closed__3;
+lean_object* l___regBuiltin_Lean_Parser_Term_termTry_formatter___closed__1;
 lean_object* l_Lean_Parser_Term_doMatch_parenthesizer___closed__7;
 lean_object* l_Lean_Parser_Term_doPatDecl___elambda__1___closed__5;
 extern lean_object* l_Lean_Parser_Term_structInst_parenthesizer___closed__2;
@@ -157,12 +165,15 @@ lean_object* l_Lean_Parser_Term_doReassignArrow___elambda__1___closed__2;
 lean_object* l_Lean_Parser_Term_doPatDecl___elambda__1___closed__10;
 lean_object* l_Lean_Parser_group_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doAssert;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__34;
 lean_object* l_Lean_Parser_Term_doIf_parenthesizer___closed__17;
 lean_object* l___regBuiltinParser_Lean_Parser_Term_doTry(lean_object*);
 extern lean_object* l_Lean_Parser_Term_match___elambda__1___closed__1;
 lean_object* l_Lean_Parser_Term_doDbgTrace___closed__4;
 lean_object* l_Lean_Parser_Term_doCatchMatch_formatter___closed__1;
+lean_object* l_Lean_Parser_Term_termTry___closed__4;
 extern lean_object* l_Lean_Parser_Term_letPatDecl;
+lean_object* l_Lean_Parser_Term_termUnless_parenthesizer___closed__2;
 lean_object* l_Lean_Parser_Term_doPatDecl___elambda__1___closed__14;
 lean_object* l___regBuiltin_Lean_Parser_Term_doLetArrow_parenthesizer(lean_object*);
 lean_object* l_Lean_Parser_Term_doFinally___closed__5;
@@ -182,6 +193,7 @@ lean_object* l_Lean_Parser_Term_doUnless_parenthesizer___closed__3;
 lean_object* l_Lean_Parser_Term_doSeqIndent___elambda__1___closed__5;
 lean_object* l_Lean_Parser_Term_doAssert_formatter___closed__1;
 lean_object* l_Lean_Parser_Term_doIf___closed__21;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__33;
 lean_object* l_Lean_Parser_Term_doTry___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_doElem_quot___elambda__1___closed__6;
 extern lean_object* l_Lean_Parser_Term_dbgTrace_formatter___closed__5;
@@ -198,6 +210,7 @@ lean_object* l_Lean_Parser_Term_doLetRec___elambda__1___closed__8;
 lean_object* l_Lean_Parser_Term_doFor___closed__9;
 lean_object* l_Lean_Parser_Term_doAssert_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doTry_formatter___closed__9;
+lean_object* l_Lean_Parser_Term_termUnless___closed__3;
 extern lean_object* l_Lean_Parser_Term_if_parenthesizer___closed__3;
 lean_object* l_Lean_Parser_Term_doIf___elambda__1___closed__3;
 lean_object* l_Lean_Parser_Term_doBreak___elambda__1(lean_object*, lean_object*);
@@ -228,9 +241,12 @@ lean_object* l_Lean_Parser_Term_doUnless___closed__2;
 lean_object* l_Lean_Parser_Term_doMatchAlts___elambda__1___closed__3;
 lean_object* l_Lean_Parser_Term_doElem_quot_parenthesizer___closed__4;
 lean_object* l_Lean_Parser_Term_doIf___elambda__1___closed__18;
+lean_object* l_Lean_Parser_Term_termReturn___elambda__1___closed__5;
 lean_object* l___regBuiltinParser_Lean_Parser_Term_do(lean_object*);
+lean_object* l_Lean_Parser_Term_termUnless___closed__5;
 lean_object* l_Lean_Parser_Term_doElem_quot___elambda__1___closed__4;
 lean_object* l_Lean_PrettyPrinter_Parenthesizer_withoutPosition_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Parser_Term_termUnless___elambda__1___closed__5;
 lean_object* l_Lean_Parser_Term_doTry___closed__8;
 lean_object* l_Lean_Parser_Term_doPatDecl_parenthesizer___closed__7;
 lean_object* l_Lean_Parser_Term_doIdDecl___closed__5;
@@ -242,16 +258,20 @@ lean_object* l_Lean_Parser_Term_liftMethod___elambda__1___closed__2;
 extern lean_object* l_Lean_Parser_Tactic_tacticSeqBracketed_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doCatchMatch_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doTry_formatter___closed__4;
+lean_object* l_Lean_Parser_Term_termTry___elambda__1___closed__2;
 lean_object* l_Lean_Parser_doElemParser_formatter(lean_object*);
 lean_object* l_Lean_Parser_orelseFn(lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_registerBuiltinDynamicParserAttribute(lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__28;
 lean_object* l_Lean_Parser_Term_doLet___elambda__1___closed__3;
 lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__14;
 lean_object* l_Lean_Parser_Term_doTry_parenthesizer___closed__12;
 lean_object* l_Lean_Parser_Term_doHave___elambda__1___closed__8;
 lean_object* l_Lean_Parser_Term_doElem_quot_formatter___closed__3;
 lean_object* l_Lean_Parser_Term_doCatchMatch___closed__5;
+lean_object* l___regBuiltin_Lean_Parser_Term_termUnless_formatter___closed__1;
 lean_object* l_Lean_Parser_Term_doTry_formatter___closed__8;
+lean_object* l_Lean_Parser_Term_termReturn___closed__4;
 extern lean_object* l_Lean_Parser_Term_let_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doPatDecl_formatter___closed__9;
 lean_object* l_Lean_Parser_Term_doIf___elambda__1___closed__15;
@@ -290,6 +310,7 @@ lean_object* lean_string_append(lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doIdDecl_formatter___closed__1;
 lean_object* l_Lean_Parser_Term_doIf___closed__13;
 lean_object* l_Lean_Parser_Term_doReassign___closed__1;
+lean_object* l_Lean_Parser_Term_termUnless___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_doFor___elambda__1___closed__15;
 lean_object* l_Lean_Parser_Term_doFinally___closed__6;
 lean_object* l_Lean_Parser_Term_doIf___closed__1;
@@ -304,11 +325,13 @@ lean_object* l___regBuiltin_Lean_Parser_Term_doReturn_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doCatch___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doUnless___closed__7;
 lean_object* l_Lean_Parser_Term_doBreak___elambda__1___closed__1;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__25;
 lean_object* l_Lean_Parser_Term_doTry___elambda__1___closed__1;
 lean_object* l_Lean_Parser_Term_doIf_formatter___closed__10;
 lean_object* l_Lean_Parser_Term_elseIf_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_PrettyPrinter_Formatter_try_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l___regBuiltin_Lean_Parser_Term_doLet_parenthesizer___closed__1;
+lean_object* l_Lean_Parser_Term_termFor_formatter___closed__1;
 lean_object* l_Lean_Parser_Term_doElem_quot;
 lean_object* l_Lean_Parser_Term_doCatchMatch_parenthesizer___closed__3;
 lean_object* l_Lean_Parser_Term_doUnless_parenthesizer___closed__5;
@@ -320,11 +343,13 @@ lean_object* l_Lean_Parser_Term_doUnless___elambda__1___closed__16;
 lean_object* l_Lean_Parser_Term_doReassign___closed__2;
 lean_object* l_Lean_Parser_checkPrecFn___boxed(lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doCatch_parenthesizer___closed__8;
+lean_object* l_Lean_Parser_Term_termReturn___closed__5;
 extern lean_object* l_Lean_Parser_Term_letRecDecls___closed__5;
 lean_object* l_Lean_Parser_Term_doCatchMatch___elambda__1___closed__7;
 lean_object* l_Lean_Parser_Term_doReturn___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doReassign_formatter___closed__4;
 lean_object* l_Lean_Parser_Term_doAssert___closed__2;
+lean_object* l_Lean_Parser_Term_termUnless_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_group_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doMatchAlt___elambda__1___closed__2;
 lean_object* l_Lean_Parser_Term_doSeqBracketed___elambda__1___closed__6;
@@ -333,6 +358,7 @@ lean_object* l_Lean_Parser_Term_doSeqBracketed___closed__3;
 lean_object* l_Lean_Parser_Term_doSeqBracketed_formatter___closed__9;
 lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken_parenthesizer___boxed(lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_mkAntiquot_formatter___boxed(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__29;
 lean_object* l_Lean_Parser_leadingNode_formatter___boxed(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doDbgTrace___closed__2;
 lean_object* l_Lean_Parser_Term_liftMethod___closed__4;
@@ -352,6 +378,7 @@ lean_object* l_Lean_PrettyPrinter_Parenthesizer_andthen_parenthesizer(lean_objec
 lean_object* l_Lean_Parser_Term_doFor___elambda__1___closed__5;
 lean_object* l_Lean_Parser_Term_liftMethod___elambda__1___closed__1;
 lean_object* l_Lean_Parser_Term_doContinue_formatter___closed__1;
+lean_object* l_Lean_Parser_Term_termFor_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_liftMethod_parenthesizer___closed__3;
 lean_object* l_Lean_Parser_Term_doReturn_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doElem_quot_formatter___closed__6;
@@ -387,6 +414,7 @@ lean_object* l_Lean_Parser_Term_doUnless___elambda__1___closed__2;
 lean_object* l_Lean_Parser_Term_doAssert___elambda__1___closed__5;
 extern lean_object* l_Lean_Parser_Term_match_parenthesizer___closed__4;
 lean_object* l_Lean_Parser_Term_doReturn_parenthesizer___closed__6;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__37;
 lean_object* l_Lean_PrettyPrinter_Formatter_optional_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 extern lean_object* l_Lean_Parser_Term_byTactic___elambda__1___closed__9;
 lean_object* l_Lean_Parser_Term_doSeqIndent___closed__1;
@@ -407,6 +435,7 @@ extern lean_object* l_Lean_Parser_Tactic_tacticSeqBracketed___elambda__1___close
 lean_object* l_Lean_Parser_Term_doIf___closed__9;
 lean_object* l_Lean_Parser_Term_doIdDecl___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doIf_parenthesizer___closed__14;
+lean_object* l_Lean_Parser_Term_termTry___closed__3;
 lean_object* l_Lean_Parser_Term_doLetArrow_parenthesizer___closed__1;
 lean_object* l___regBuiltinParser_Lean_Parser_Term_doBreak(lean_object*);
 lean_object* l_Lean_Parser_Term_doReassignArrow___elambda__1___closed__7;
@@ -421,6 +450,7 @@ lean_object* l_Lean_Parser_Term_doUnless___elambda__1___closed__1;
 lean_object* l___regBuiltin_Lean_Parser_Term_doLet_formatter(lean_object*);
 lean_object* l_Lean_Parser_Term_doIf___elambda__1___closed__9;
 extern lean_object* l_Lean_Parser_Term_letrec_formatter___closed__6;
+lean_object* l_Lean_Parser_Term_termFor___elambda__1(lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doPatDecl_formatter___closed__5;
 lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__24;
 lean_object* l_Lean_Parser_Term_doFor___closed__2;
@@ -458,7 +488,10 @@ lean_object* l___regBuiltin_Lean_Parser_Term_doMatch_formatter___closed__1;
 lean_object* l___regBuiltin_Lean_Parser_Term_doBreak_formatter___closed__1;
 lean_object* l___regBuiltinParser_Lean_Parser_Term_doReturn(lean_object*);
 lean_object* l_Lean_Parser_Term_doReturn_parenthesizer___closed__3;
+lean_object* l_Lean_Parser_Term_termReturn___elambda__1___closed__2;
+lean_object* l_Lean_Parser_Term_termUnless_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doIdDecl_parenthesizer___closed__6;
+lean_object* l___regBuiltin_Lean_Parser_Term_termTry_formatter(lean_object*);
 lean_object* l_Lean_Parser_Term_doSeqIndent_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doIdDecl___elambda__1___closed__2;
 lean_object* l_Lean_Parser_Term_doAssert_parenthesizer___closed__1;
@@ -493,6 +526,7 @@ lean_object* l___regBuiltin_Lean_Parser_Term_doReturn_formatter(lean_object*);
 lean_object* l___regBuiltin_Lean_Parser_Term_doTry_formatter(lean_object*);
 lean_object* l_Lean_Parser_Term_elseIf___elambda__1___closed__1;
 lean_object* l_Lean_Parser_Term_doFor___closed__4;
+lean_object* l_Lean_Parser_Term_termReturn_formatter___closed__1;
 lean_object* l___regBuiltin_Lean_Parser_Term_doReassignArrow_parenthesizer(lean_object*);
 lean_object* l_Lean_Parser_Term_doMatch___elambda__1___closed__8;
 lean_object* l_Lean_Parser_Term_elseIf;
@@ -518,9 +552,12 @@ lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___c
 lean_object* l_Lean_Parser_Term_doNested;
 lean_object* l_Lean_Parser_Term_doReturn___elambda__1___closed__5;
 extern lean_object* l_Lean_Parser_antiquotNestedExpr___closed__2;
+lean_object* l___regBuiltin_Lean_Parser_Term_termTry_parenthesizer___closed__1;
+lean_object* l_Lean_Parser_Term_termUnless_formatter___closed__1;
 extern lean_object* l_Lean_Parser_Term_if___elambda__1___closed__13;
 lean_object* l_Lean_Parser_noFirstTokenInfo(lean_object*);
 lean_object* l_Lean_Parser_Term_doIdDecl_parenthesizer___closed__1;
+lean_object* l_Lean_Parser_Term_termReturn___elambda__1___closed__1;
 extern lean_object* l_Lean_Parser_Term_letDecl;
 lean_object* l___regBuiltin_Lean_Parser_Term_liftMethod_parenthesizer(lean_object*);
 lean_object* l_Lean_Parser_Term_doDbgTrace___elambda__1___closed__3;
@@ -550,6 +587,7 @@ lean_object* l___regBuiltin_Lean_Parser_Term_doElem_quot_parenthesizer___closed_
 lean_object* l_Lean_Parser_Term_doExpr_parenthesizer___closed__2;
 lean_object* l_Lean_Parser_Term_elseIf___elambda__1___lambda__1(lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doContinue___elambda__1___closed__4;
+lean_object* l_Lean_Parser_Term_termReturn___elambda__1(lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doSeqBracketed___elambda__1(lean_object*, lean_object*);
 lean_object* l___regBuiltin_Lean_Parser_Term_doIf_formatter(lean_object*);
 lean_object* l_Lean_Parser_Term_doLetArrow___elambda__1___closed__2;
@@ -557,23 +595,29 @@ lean_object* l_Lean_Parser_Term_doIdDecl_parenthesizer___closed__4;
 lean_object* l_Lean_Parser_Term_doAssert___elambda__1___closed__7;
 lean_object* l_Lean_Parser_Term_doHave_parenthesizer___closed__2;
 lean_object* l_Lean_Parser_Term_doIf___closed__18;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__32;
 lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__10;
 lean_object* l_Lean_Parser_Term_leftArrow___closed__3;
 lean_object* l_Lean_Parser_Term_doMatchAlts___elambda__1___closed__1;
 lean_object* l_Lean_PrettyPrinter_Formatter_withForbidden_formatter___rarg(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Parser_Term_termReturn;
 lean_object* l_Lean_Parser_Term_doFor;
 lean_object* l_Lean_Parser_Term_doCatch_parenthesizer___closed__7;
 lean_object* l_Lean_Parser_Term_doLetArrow;
+lean_object* l_Lean_Parser_Term_termUnless___elambda__1___closed__2;
 lean_object* l_Lean_Parser_Term_doFor___elambda__1___closed__2;
 lean_object* l_Lean_Parser_Term_doMatchAlts_formatter___closed__6;
 lean_object* l_Lean_Parser_Term_doExpr_formatter___closed__3;
 lean_object* l_Lean_Parser_checkLineEqFn(lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doHave_parenthesizer___closed__1;
+lean_object* l_Lean_Parser_Term_termTry;
 lean_object* l_Lean_Parser_Term_doMatch_parenthesizer___closed__4;
+lean_object* l_Lean_Parser_Term_termFor;
 lean_object* l_Lean_Parser_Term_doAssert_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doReassignArrow___elambda__1___closed__3;
 lean_object* l_Lean_Parser_Term_doLet___closed__3;
 lean_object* l___regBuiltinParser_Lean_Parser_Term_doContinue(lean_object*);
+lean_object* l_Lean_Parser_Term_termTry___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doIdDecl___elambda__1___closed__5;
 lean_object* l_Lean_Parser_Term_doLetRec_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_optionaInfo(lean_object*);
@@ -594,6 +638,7 @@ lean_object* l_Lean_Parser_Term_doFor___elambda__1___closed__13;
 extern lean_object* l_Lean_Parser_Term_assert___elambda__1___closed__6;
 lean_object* l_Lean_PrettyPrinter_Formatter_node_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doCatchMatch___closed__6;
+lean_object* l_Lean_Parser_Term_termUnless___elambda__1___closed__3;
 lean_object* l_Lean_Parser_Term_doCatch___elambda__1___closed__14;
 lean_object* l_Lean_PrettyPrinter_Formatter_unicodeSymbol_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doCatch___elambda__1___closed__3;
@@ -624,9 +669,11 @@ lean_object* l_Lean_Parser_Term_doFor___elambda__1___closed__1;
 lean_object* l_Lean_Parser_Term_doDbgTrace_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doUnless___elambda__1___closed__8;
 lean_object* l___regBuiltin_Lean_Parser_Term_doElem_quot_formatter(lean_object*);
+lean_object* l_Lean_Parser_Term_termFor_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doReassignArrow_parenthesizer___closed__3;
 lean_object* l_Lean_Parser_Term_doSeqIndent_parenthesizer___closed__3;
 lean_object* l_Lean_Parser_doElemParser_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Parser_Term_termTry___elambda__1___closed__5;
 lean_object* l_Lean_Parser_Term_doReassign___closed__3;
 lean_object* l_Lean_Parser_initFn____x40_Lean_Parser_Do___hyg_14____closed__2;
 extern lean_object* l___kind_tactic____x40_Init_Tactics___hyg_461____closed__9;
@@ -646,6 +693,8 @@ lean_object* l_Lean_Parser_Term_doPatDecl_formatter___closed__2;
 lean_object* l_Lean_Parser_orelseInfo(lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doPatDecl_formatter___closed__8;
 lean_object* l_Lean_Parser_Term_elseIf___closed__6;
+lean_object* l_Lean_Parser_Term_termReturn___elambda__1___closed__6;
+lean_object* l_Lean_Parser_Term_termTry_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doIf___elambda__1___closed__10;
 extern lean_object* l_Lean_Parser_Term_binderIdent___closed__1;
 lean_object* l_Lean_Parser_Term_doLet_parenthesizer___closed__2;
@@ -668,7 +717,9 @@ extern lean_object* l_Init_Data_Repr___instance__15___closed__1;
 lean_object* l_Lean_Parser_Term_doReturn_formatter___closed__3;
 lean_object* l_Lean_Parser_Term_doTry___closed__11;
 lean_object* l_Lean_Parser_Term_doSeqBracketed___elambda__1___closed__7;
+lean_object* l_Lean_Parser_Term_termTry___elambda__1___closed__3;
 extern lean_object* l_Lean_Parser_maxPrec;
+lean_object* l___regBuiltin_Lean_Parser_Term_termUnless_formatter(lean_object*);
 lean_object* l_Lean_Parser_Term_doNested___closed__4;
 lean_object* l_Lean_Parser_Term_doSeqIndent___elambda__1___closed__8;
 lean_object* l___regBuiltinParser_Lean_Parser_Term_doElem_quot(lean_object*);
@@ -692,14 +743,19 @@ lean_object* l_Lean_Parser_Term_doSeqBracketed_formatter___closed__4;
 lean_object* l_Lean_Parser_Term_leftArrow___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doSeqIndent_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doLetRec___elambda__1___closed__10;
+lean_object* l_Lean_Parser_Term_termUnless___elambda__1___closed__1;
+lean_object* l_Lean_Parser_Term_termUnless___elambda__1(lean_object*, lean_object*);
+lean_object* l___regBuiltinParser_Lean_Parser_Term_termUnless(lean_object*);
 lean_object* l_Lean_Parser_Term_doCatch___elambda__1___closed__10;
 lean_object* l_Lean_Parser_Term_doMatchAlts_formatter___closed__1;
 lean_object* l_Lean_PrettyPrinter_Parenthesizer_checkLineEq_parenthesizer___boxed(lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doMatch_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Parser_Term_termTry___closed__5;
 extern lean_object* l_Lean_Parser_Term_haveDecl___closed__5;
 extern lean_object* l_Lean_Parser_Term_if___closed__1;
 lean_object* l_Lean_Parser_Term_doMatch___closed__7;
 lean_object* l_Lean_Parser_Term_doFinally___closed__4;
+lean_object* l_Lean_Parser_Term_termFor___closed__3;
 lean_object* l_Lean_Parser_Term_doLetArrow___elambda__1___closed__1;
 lean_object* l_Lean_Parser_Term_doUnless___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doLetArrow___closed__3;
@@ -724,6 +780,7 @@ lean_object* l_Lean_Parser_Term_leftArrow___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_doReturn_formatter___closed__6;
 lean_object* l_Lean_Parser_Term_doReassignArrow_parenthesizer___closed__2;
 lean_object* l___regBuiltin_Lean_Parser_Term_doElem_quot_formatter___closed__1;
+lean_object* l___regBuiltin_Lean_Parser_Term_termReturn_formatter(lean_object*);
 lean_object* l_Lean_Parser_Term_doCatchMatch___elambda__1___closed__2;
 lean_object* l_Lean_Parser_Term_doBreak___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_elseIf_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
@@ -746,6 +803,7 @@ lean_object* l_Lean_Parser_Term_liftMethod___closed__1;
 lean_object* l_Lean_Parser_Term_doPatDecl___closed__5;
 lean_object* l_Lean_Parser_Term_doLetArrow___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_doCatchMatch___closed__1;
+lean_object* l___regBuiltin_Lean_Parser_Term_termFor_formatter(lean_object*);
 lean_object* l_Lean_Parser_Term_doIf_formatter___closed__13;
 lean_object* l_Lean_Parser_Tactic_tacticSeq1Indented___elambda__1___lambda__1(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doCatch_formatter___closed__1;
@@ -756,6 +814,8 @@ lean_object* l_Lean_PrettyPrinter_Parenthesizer_symbol_parenthesizer___boxed(lea
 lean_object* l_Lean_Parser_Term_doBreak___closed__1;
 lean_object* l___regBuiltin_Lean_Parser_Term_doLetArrow_formatter___closed__1;
 lean_object* l_Lean_Parser_Term_doFinally_formatter___closed__1;
+lean_object* l___regBuiltinParser_Lean_Parser_Term_termFor(lean_object*);
+lean_object* l___regBuiltinParser_Lean_Parser_Term_termTry(lean_object*);
 lean_object* l_Lean_Parser_Term_doUnless___elambda__1___lambda__1___closed__1;
 extern lean_object* l_Lean_Parser_Error_toString___closed__2;
 lean_object* l_Lean_Parser_Term_doMatchAlts_formatter___closed__5;
@@ -765,6 +825,7 @@ lean_object* l___regBuiltin_Lean_Parser_Term_doIf_formatter___closed__1;
 lean_object* l_Lean_Parser_Term_doIdDecl_formatter___closed__3;
 lean_object* l_Lean_Parser_Term_doReturn___elambda__1___lambda__1___boxed(lean_object*, lean_object*, lean_object*, lean_object*);
 extern lean_object* l_Lean_Parser_Term_match_formatter___closed__4;
+lean_object* l_Lean_Parser_Term_termFor___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_elseIf___elambda__1(lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doContinue___elambda__1___closed__7;
 lean_object* l_Lean_Parser_Term_doLetArrow_formatter___closed__6;
@@ -786,7 +847,9 @@ lean_object* l___regBuiltin_Lean_Parser_Term_doDbgTrace_formatter___closed__1;
 lean_object* l_Lean_Parser_initFn____x40_Lean_Parser_Do___hyg_4____closed__4;
 lean_object* l_Lean_Parser_Term_leftArrow___elambda__1___closed__8;
 lean_object* l_Lean_Parser_Term_liftMethod___closed__3;
+lean_object* l_Lean_Parser_Term_termFor___closed__2;
 extern lean_object* l_Lean_Parser_Tactic_tacticSeqBracketed___elambda__1___closed__9;
+lean_object* l_Lean_Parser_Term_termFor___elambda__1___closed__2;
 extern lean_object* l_Lean_Parser_Tactic_tacticSeqBracketed___closed__3;
 lean_object* l_Lean_Parser_Term_doCatchMatch___closed__2;
 lean_object* l_Lean_Parser_Term_doLet___elambda__1___closed__8;
@@ -794,6 +857,7 @@ lean_object* l_Lean_Parser_Term_doFinally___elambda__1___closed__1;
 lean_object* l___regBuiltin_Lean_Parser_Term_doTry_formatter___closed__1;
 lean_object* l_Lean_Parser_Term_doCatchMatch___elambda__1___closed__4;
 extern lean_object* l_Lean_Parser_antiquotNestedExpr___closed__3;
+lean_object* l___regBuiltinParser_Lean_Parser_Term_termReturn(lean_object*);
 lean_object* l_Lean_Parser_Term_doMatch___closed__8;
 lean_object* l___regBuiltin_Lean_Parser_Term_doLet_parenthesizer(lean_object*);
 lean_object* l_Lean_Parser_Term_doAssert___elambda__1___closed__1;
@@ -802,6 +866,7 @@ lean_object* l_Lean_Parser_Term_doLetArrow_formatter___closed__3;
 lean_object* l___regBuiltin_Lean_Parser_Term_doAssert_parenthesizer(lean_object*);
 lean_object* l_Lean_Parser_Term_doTry_formatter___closed__10;
 lean_object* l_Lean_Parser_Term_doIf___elambda__1(lean_object*, lean_object*);
+lean_object* l_Lean_Parser_Term_termUnless___closed__4;
 lean_object* l_Lean_Parser_Term_doReturn___closed__3;
 lean_object* l_Lean_Parser_Term_doElem_quot_parenthesizer___closed__6;
 lean_object* l_Lean_Parser_Term_doUnless___elambda__1___closed__13;
@@ -817,6 +882,7 @@ lean_object* l_Lean_Parser_Term_doLet___closed__5;
 lean_object* l_Lean_Parser_Term_doIf_parenthesizer___closed__1;
 extern lean_object* l_Lean_Parser_Term_tupleTail_formatter___closed__3;
 lean_object* l_Lean_Parser_Term_doBreak___closed__4;
+lean_object* l_Lean_Parser_Term_termUnless___closed__2;
 extern lean_object* l_Lean_Parser_Term_matchAlts_formatter___closed__13;
 lean_object* l_Lean_Parser_Term_doExpr___elambda__1___closed__5;
 lean_object* l_Lean_Parser_Term_doDbgTrace_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
@@ -826,6 +892,7 @@ lean_object* l_Lean_Parser_Term_doCatchMatch___elambda__1___closed__5;
 lean_object* l_Lean_Parser_Term_doCatch_formatter___closed__4;
 lean_object* l_Lean_Parser_Term_doLetRec_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doUnless_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Parser_Term_termReturn_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doAssert___elambda__1___closed__2;
 lean_object* l_Lean_Parser_Term_elseIf_parenthesizer___closed__2;
 lean_object* l_Lean_PrettyPrinter_Formatter_withPosition_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
@@ -833,13 +900,16 @@ lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken_formatter(lean_o
 lean_object* l_Lean_Parser_Term_doReassign_parenthesizer___closed__3;
 lean_object* l___regBuiltinParser_Lean_Parser_Term_doNested(lean_object*);
 lean_object* l_Lean_Parser_Term_doReassign_formatter___closed__3;
+lean_object* l_Lean_Parser_Term_termTry_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__21;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__38;
 lean_object* l___regBuiltin_Lean_Parser_Term_doExpr_formatter(lean_object*);
 lean_object* l_Lean_Parser_Term_liftMethod___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_doUnless___elambda__1___closed__15;
 lean_object* l_Lean_Parser_Term_doHave___closed__2;
 extern lean_object* l_Lean_Parser_Term_letrec___closed__4;
 extern lean_object* l_Lean_Parser_Tactic_tacticSeqBracketed_parenthesizer___closed__10;
+lean_object* l___regBuiltin_Lean_Parser_Term_termReturn_parenthesizer___closed__1;
 extern lean_object* l_Lean_Parser_Term_if___closed__2;
 lean_object* l_Lean_Parser_Term_doIdDecl_formatter___closed__7;
 lean_object* l_Lean_Parser_Term_doPatDecl_parenthesizer___closed__3;
@@ -872,6 +942,7 @@ extern lean_object* l_Lean_Parser_Term_if_parenthesizer___closed__4;
 lean_object* l_Lean_Parser_mkAntiquot_parenthesizer___boxed(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doLetRec___closed__4;
 lean_object* l_Lean_Parser_Term_doPatDecl_parenthesizer___closed__5;
+lean_object* l_Lean_Parser_Term_termUnless___closed__1;
 lean_object* l_Lean_Parser_Term_doPatDecl___elambda__1___closed__11;
 lean_object* l_Lean_Parser_Term_doUnless___elambda__1___closed__14;
 lean_object* l_Lean_Parser_Term_doSeqBracketed_parenthesizer___closed__6;
@@ -900,11 +971,13 @@ lean_object* l_Lean_Parser_Term_doFor_parenthesizer___closed__5;
 lean_object* l_Lean_Parser_Term_doCatch_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doAssert___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doSeq_parenthesizer___closed__2;
+lean_object* l_Lean_Parser_Term_termFor___elambda__1___closed__6;
 extern lean_object* l_Lean_Parser_Term_binderIdent;
 lean_object* l_Lean_Parser_Term_doSeq_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doTry___closed__1;
 lean_object* l_Lean_Parser_Term_doDbgTrace___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doIf___elambda__1___closed__19;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__31;
 lean_object* l_Lean_Parser_Term_doFinally_parenthesizer___closed__2;
 lean_object* l_Lean_Parser_Term_elseIf___elambda__1___closed__3;
 lean_object* l_Lean_Parser_Term_doReassignArrow___elambda__1___closed__5;
@@ -926,6 +999,7 @@ lean_object* l_Lean_Parser_Term_doFinally_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doSeqBracketed_formatter___closed__7;
 lean_object* l_Lean_Parser_Term_doPatDecl_parenthesizer___closed__2;
 lean_object* l_Lean_Parser_Term_doExpr___elambda__1(lean_object*, lean_object*);
+lean_object* l_Lean_Parser_Term_termFor___closed__1;
 lean_object* l_Lean_Parser_Term_doIf_formatter___closed__17;
 lean_object* l_Lean_Parser_Term_doIf_parenthesizer___closed__7;
 lean_object* l_Lean_Parser_Term_doSeqIndent;
@@ -934,6 +1008,7 @@ lean_object* l_Lean_Parser_Term_doAssert___elambda__1___closed__8;
 lean_object* l___regBuiltin_Lean_Parser_Term_do_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_liftMethod_parenthesizer___closed__4;
 lean_object* l_Lean_Parser_Term_doSeqIndent_parenthesizer___closed__2;
+lean_object* l___regBuiltin_Lean_Parser_Term_termUnless_parenthesizer(lean_object*);
 lean_object* l_Lean_Parser_Term_elseIf___closed__2;
 lean_object* l_Lean_Parser_Term_leftArrow___elambda__1___closed__3;
 lean_object* l_Lean_Parser_Term_doSeqBracketed___closed__6;
@@ -944,7 +1019,9 @@ lean_object* l_Lean_Parser_Term_doLetArrow_formatter(lean_object*, lean_object*,
 lean_object* l_Lean_Parser_Term_doReassign___closed__6;
 lean_object* l_Lean_Parser_Term_doLetArrow___closed__7;
 lean_object* l_Lean_Parser_Term_doSeqBracketed_parenthesizer___closed__9;
+lean_object* l_Lean_Parser_Term_termFor_parenthesizer___closed__2;
 lean_object* l_Lean_Parser_Term_doBreak;
+lean_object* l_Lean_Parser_Term_termTry___elambda__1(lean_object*, lean_object*);
 lean_object* l___regBuiltin_Lean_Parser_Term_doNested_parenthesizer___closed__1;
 extern lean_object* l_Lean_Parser_Term_letDecl_formatter___closed__3;
 lean_object* l_Lean_Parser_Term_doAssert_parenthesizer___closed__2;
@@ -965,6 +1042,7 @@ lean_object* l___regBuiltin_Lean_Parser_Term_do_formatter(lean_object*);
 lean_object* l_Lean_Parser_Term_elseIf___closed__4;
 lean_object* l_Lean_Parser_Term_doLetRec___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doTry_parenthesizer___closed__4;
+lean_object* l_Lean_Parser_Term_termReturn_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doSeqBracketed_formatter___closed__10;
 lean_object* l_Lean_Parser_Term_doIf___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doNested___closed__5;
@@ -993,6 +1071,8 @@ lean_object* l_Lean_Parser_Term_doFor_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doExpr___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doSeq___closed__3;
 lean_object* l_Lean_Parser_Term_doReturn_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l___regBuiltin_Lean_Parser_Term_termTry_parenthesizer(lean_object*);
+lean_object* l_Lean_Parser_Term_termUnless;
 lean_object* l_Lean_Parser_Term_doLet___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_doPatDecl___elambda__1___closed__7;
 lean_object* l_Lean_Parser_Term_doMatchAlt___closed__7;
@@ -1022,10 +1102,12 @@ lean_object* l_Lean_Parser_orelseFnCore(lean_object*, lean_object*, uint8_t, lea
 extern lean_object* l_Lean_Parser_Term_matchAlts_parenthesizer___closed__13;
 extern lean_object* l_Lean_Parser_epsilonInfo;
 lean_object* l_Lean_Parser_Term_doCatch_parenthesizer___closed__3;
+lean_object* l___regBuiltin_Lean_Parser_Term_termFor_parenthesizer(lean_object*);
 lean_object* l_Lean_Parser_Term_doIf_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doNested___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_leftArrow___elambda__1___closed__7;
 lean_object* l_Lean_Parser_Term_doUnless___elambda__1___closed__9;
+lean_object* l_Lean_Parser_Term_termTry_parenthesizer___closed__2;
 lean_object* l_Lean_Parser_Term_doPatDecl_parenthesizer___closed__8;
 lean_object* l_Lean_Parser_Term_doTry_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doFor___elambda__1___closed__11;
@@ -1034,6 +1116,7 @@ extern lean_object* l_Lean_Parser_Term_matchAlt_parenthesizer___closed__2;
 lean_object* l___regBuiltin_Lean_Parser_Term_doMatch_parenthesizer(lean_object*);
 lean_object* l_Lean_Parser_Term_doReassign___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_doIf_parenthesizer___closed__3;
+lean_object* l___regBuiltin_Lean_Parser_Term_termReturn_parenthesizer(lean_object*);
 lean_object* l_Lean_Parser_Term_doCatch_formatter___closed__6;
 lean_object* l_Lean_Parser_Term_doTry___closed__2;
 lean_object* l_Lean_Parser_Term_doTry_parenthesizer___closed__2;
@@ -1041,6 +1124,7 @@ lean_object* l_Lean_Parser_Term_doLet___elambda__1(lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doUnless___closed__10;
 lean_object* l_Lean_Parser_categoryParser___elambda__1(lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doPatDecl_parenthesizer___closed__9;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__26;
 lean_object* l_Lean_Parser_Term_doReassignArrow_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doMatch___closed__6;
 lean_object* l_Lean_Parser_Term_doBreak_parenthesizer___closed__1;
@@ -1057,11 +1141,14 @@ lean_object* l_Lean_Parser_Term_doFinally___elambda__1(lean_object*, lean_object
 lean_object* l_Lean_Parser_Term_doCatchMatch;
 lean_object* l_Lean_Parser_Term_doIf_formatter___closed__8;
 lean_object* l_Lean_Parser_Term_doContinue_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Parser_Term_termTry_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doFor_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__36;
 lean_object* l_Lean_Parser_Term_doDbgTrace___closed__5;
 lean_object* l_Lean_Parser_Term_doElem_quot___elambda__1___closed__11;
 lean_object* l_Lean_Parser_Term_doElem_quot___closed__4;
 lean_object* l_Lean_Parser_Term_doHave___elambda__1___closed__2;
+lean_object* l___regBuiltin_Lean_Parser_Term_termReturn_formatter___closed__1;
 lean_object* l_Lean_Parser_Term_doReturn_formatter___closed__7;
 lean_object* l_Lean_Parser_Term_doFor_formatter___closed__1;
 lean_object* l_Lean_Parser_Term_doNested_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
@@ -1078,6 +1165,7 @@ lean_object* l_Lean_Parser_Term_doMatch___elambda__1___closed__10;
 lean_object* l_Lean_Parser_Term_doContinue___elambda__1___closed__5;
 lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken;
 lean_object* l_Lean_Parser_Term_doUnless___elambda__1___closed__10;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__35;
 lean_object* l_Lean_Parser_Term_doBreak_formatter___closed__1;
 lean_object* l_Lean_Parser_Term_doIf_parenthesizer___closed__11;
 lean_object* l_Lean_Parser_Term_doSeqBracketed___elambda__1___closed__5;
@@ -1092,6 +1180,7 @@ extern lean_object* l_Lean_KeyedDeclsAttribute_init___rarg___lambda__3___closed_
 lean_object* l_Lean_Parser_Term_doTry___elambda__1(lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doExpr___elambda__1___closed__2;
 lean_object* l_Lean_Parser_Term_elseIf___closed__3;
+lean_object* l_Lean_Parser_Term_termFor___elambda__1___closed__1;
 lean_object* l_Lean_Parser_Term_doSeqBracketed_formatter___closed__5;
 lean_object* l_Lean_Parser_Term_doTry___elambda__1___closed__14;
 lean_object* l_Lean_Parser_Term_doCatch_parenthesizer___closed__2;
@@ -1113,6 +1202,7 @@ lean_object* l_Lean_Parser_Term_doSeq_parenthesizer(lean_object*, lean_object*,
 lean_object* l_Lean_Parser_Term_doSeqIndent___elambda__1___closed__7;
 lean_object* l_Lean_Parser_Term_doPatDecl_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doExpr___elambda__1___closed__4;
+lean_object* l___regBuiltin_Lean_Parser_Term_termUnless_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doReassign_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 extern lean_object* l_Lean_Parser_Level_paren___elambda__1___closed__8;
 lean_object* l_Lean_Parser_Term_doIf___elambda__1___closed__14;
@@ -1129,6 +1219,7 @@ lean_object* l_Lean_Parser_Term_doElem_quot_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doPatDecl___closed__3;
 lean_object* l_Lean_Parser_Term_doUnless_parenthesizer___closed__4;
 lean_object* l___regBuiltin_Lean_Parser_Term_doContinue_formatter___closed__1;
+lean_object* l_Lean_Parser_Term_termReturn___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_doLetArrow___closed__2;
 lean_object* l_Lean_Parser_Term_doUnless_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doBreak_formatter___closed__2;
@@ -1137,6 +1228,7 @@ lean_object* l_Lean_Parser_Term_doLetRec_formatter___closed__2;
 lean_object* l_Lean_Parser_optionalFn(lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doMatch_formatter___closed__7;
 lean_object* l_Lean_Parser_Term_doExpr___elambda__1___closed__1;
+lean_object* l_Lean_Parser_Term_termReturn___closed__3;
 lean_object* l_Lean_Parser_Term_doHave___elambda__1___closed__4;
 lean_object* l_Lean_Parser_Term_doHave___closed__5;
 lean_object* l_Lean_Parser_Term_liftMethod_formatter___closed__4;
@@ -1165,6 +1257,7 @@ lean_object* l_Lean_Parser_Term_doFinally_parenthesizer(lean_object*, lean_objec
 lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__18;
 lean_object* l_Lean_Parser_Term_doCatchMatch_formatter___closed__3;
 lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__3;
+lean_object* l_Lean_Parser_Term_termFor___elambda__1___closed__5;
 lean_object* l_Lean_Parser_Term_doLet___closed__2;
 lean_object* l_Lean_Parser_Term_doLetArrow___elambda__1___closed__3;
 lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__5;
@@ -1172,10 +1265,12 @@ lean_object* l_Lean_Parser_Term_doCatch_formatter___closed__3;
 lean_object* l_Lean_Parser_Term_doReturn_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doTry_parenthesizer___closed__7;
 lean_object* l___regBuiltinParser_Lean_Parser_Term_doReassignArrow(lean_object*);
+lean_object* l_Lean_Parser_Term_termFor___closed__5;
 lean_object* l_Lean_Parser_Term_doSeqBracketed_parenthesizer___closed__5;
 extern lean_object* l_Lean_Parser_Term_have___elambda__1___closed__5;
 lean_object* l_Lean_Parser_Term_doIdDecl_formatter___closed__6;
 extern lean_object* l_Lean_Parser_Term_have_formatter___closed__4;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__30;
 lean_object* l_Lean_Parser_Term_doMatchAlt_formatter___closed__3;
 lean_object* l_Lean_Parser_Term_elseIf___elambda__1___lambda__1___closed__1;
 extern lean_object* l_Lean_Parser_Term_if_formatter___closed__2;
@@ -1183,6 +1278,7 @@ lean_object* l_Lean_Parser_Term_doNested___elambda__1___closed__1;
 lean_object* l_Lean_Parser_Term_doUnless___elambda__1___lambda__1(lean_object*, lean_object*, lean_object*);
 extern lean_object* l_Lean_Parser_Term_letIdDecl___closed__4;
 lean_object* l_Lean_Parser_Term_leftArrow___closed__1;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__39;
 lean_object* l_Lean_Parser_Term_doLet___elambda__1___closed__2;
 lean_object* l_Lean_Parser_Term_doSeqIndent___closed__10;
 lean_object* l_Lean_Parser_mkAntiquot(lean_object*, lean_object*, uint8_t);
@@ -1190,6 +1286,7 @@ lean_object* l_Lean_Parser_Term_doNested___closed__3;
 lean_object* l___regBuiltin_Lean_Parser_Term_doExpr_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doMatchAlt_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doFor___elambda__1___closed__6;
+lean_object* l___regBuiltin_Lean_Parser_Term_termFor_parenthesizer___closed__1;
 lean_object* l___regBuiltin_Lean_Parser_Term_doReassignArrow_parenthesizer___closed__1;
 lean_object* l_Lean_PrettyPrinter_Parenthesizer_withPosition_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_elseIf_parenthesizer___closed__5;
@@ -1202,6 +1299,7 @@ lean_object* l_Lean_Parser_Term_do_formatter___closed__2;
 lean_object* l___regBuiltin_Lean_Parser_Term_doAssert_parenthesizer___closed__1;
 lean_object* l___regBuiltin_Lean_Parser_Term_doMatch_parenthesizer___closed__1;
 lean_object* l___regBuiltin_Lean_Parser_Term_doElem_quot_parenthesizer(lean_object*);
+lean_object* l_Lean_Parser_Term_termFor___elambda__1___closed__3;
 lean_object* l_Lean_Parser_doElemParser_formatter___boxed(lean_object*);
 lean_object* l___regBuiltin_Lean_Parser_Term_doUnless_formatter___closed__1;
 lean_object* l_Lean_Parser_Term_doLetRec_formatter___closed__1;
@@ -1251,6 +1349,8 @@ lean_object* l_Lean_Parser_Term_elseIf_parenthesizer___closed__3;
 lean_object* l_Lean_Parser_Term_doFinally_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doCatchMatch_parenthesizer___closed__2;
 lean_object* l_Lean_Parser_Term_doFinally___elambda__1___closed__4;
+lean_object* l_Lean_Parser_Term_termReturn_parenthesizer___closed__1;
+lean_object* l_Lean_Parser_Term_termReturn___elambda__1___closed__3;
 lean_object* l_Lean_Parser_Term_doFinally_parenthesizer___closed__3;
 lean_object* l_Lean_Parser_Term_do___elambda__1___closed__5;
 lean_object* l_Lean_Parser_Term_doReturn___elambda__1___closed__3;
@@ -1271,7 +1371,9 @@ lean_object* l_Lean_Parser_Term_doMatchAlt___elambda__1___closed__8;
 lean_object* l_Lean_Parser_Term_doSeqBracketed_formatter___closed__6;
 lean_object* l_Lean_Parser_Term_doPatDecl___closed__1;
 lean_object* l_Lean_Parser_Term_doHave___elambda__1___closed__6;
+lean_object* l_Lean_Parser_Term_termTry___closed__1;
 lean_object* l_Lean_Parser_Term_doIf_formatter___closed__1;
+lean_object* l_Lean_Parser_Term_termTry_formatter___closed__1;
 lean_object* l___regBuiltin_Lean_Parser_Term_doTry_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doDbgTrace___elambda__1___closed__9;
 lean_object* l_Lean_Parser_Term_doPatDecl___closed__4;
@@ -1279,6 +1381,7 @@ lean_object* l_Lean_Parser_Term_doMatchAlts_parenthesizer___closed__2;
 lean_object* l_Lean_Parser_Term_doLetArrow_formatter___closed__1;
 lean_object* l_Lean_PrettyPrinter_Parenthesizer_many1_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doContinue___elambda__1(lean_object*, lean_object*);
+lean_object* l_Lean_Parser_Term_termTry_formatter___closed__2;
 lean_object* l_Lean_Parser_Term_doIf_parenthesizer___closed__6;
 lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___closed__2;
 lean_object* l_Lean_Parser_Term_doBreak___closed__5;
@@ -1286,6 +1389,7 @@ lean_object* l_Lean_Parser_Term_doCatch;
 lean_object* l_Lean_Parser_Term_doPatDecl___closed__6;
 lean_object* l_Lean_Parser_Term_doPatDecl___elambda__1___closed__8;
 lean_object* l___regBuiltin_Lean_Parser_Term_doIf_parenthesizer___closed__1;
+lean_object* l_Lean_Parser_Term_termFor_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doElem_quot___elambda__1___closed__12;
 lean_object* l_Lean_Parser_Term_doCatchMatch_parenthesizer___closed__1;
 extern lean_object* l_Lean_Parser_Term_dbgTrace___closed__3;
@@ -1297,9 +1401,11 @@ lean_object* l_Lean_Parser_Term_doSeqBracketed_formatter(lean_object*, lean_obje
 lean_object* l_Lean_Parser_Term_doCatch___elambda__1___closed__11;
 lean_object* l_Lean_Parser_Term_doLetRec___closed__1;
 lean_object* l_Lean_Parser_Term_liftMethod_parenthesizer___closed__2;
+lean_object* l_Lean_Parser_Term_termUnless_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doIf___elambda__1___lambda__1(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doIf_parenthesizer___closed__20;
 lean_object* l_Lean_Parser_Term_doDbgTrace___closed__3;
+lean_object* l_Lean_Parser_Term_termReturn_parenthesizer___closed__2;
 lean_object* l_Lean_Parser_Term_doExpr_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l___regBuiltin_Lean_Parser_Term_doContinue_parenthesizer(lean_object*);
 lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__2;
@@ -1354,8 +1460,10 @@ lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___c
 lean_object* l_Lean_PrettyPrinter_Formatter_withoutPosition_formatter(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doDbgTrace___elambda__1___closed__2;
 lean_object* l___regBuiltin_Lean_Parser_Term_doBreak_formatter(lean_object*);
+lean_object* l_Lean_Parser_Term_termReturn_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doMatchAlt_formatter___closed__4;
 lean_object* l_Lean_Parser_Term_doHave___elambda__1___closed__3;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__40;
 lean_object* l_Lean_Parser_Term_doPatDecl___elambda__1___closed__6;
 lean_object* l_Lean_Parser_Term_doExpr___closed__3;
 lean_object* l_Lean_Parser_Term_doMatchAlt___closed__6;
@@ -1367,6 +1475,7 @@ lean_object* l_Lean_Parser_Term_doElem_quot___elambda__1___closed__1;
 lean_object* l_Lean_Parser_Term_doSeqIndent___elambda__1___closed__10;
 lean_object* l_Lean_Parser_Term_doDbgTrace___elambda__1___closed__1;
 lean_object* l_Lean_Parser_Term_doCatch___elambda__1___closed__1;
+lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__27;
 lean_object* l_Lean_Parser_unicodeSymbolFnAux(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_elseIf_formatter___closed__4;
 lean_object* l_Lean_Parser_Term_doTry___closed__3;
@@ -1382,6 +1491,7 @@ lean_object* l_Lean_Parser_Term_doMatchAlts_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doCatch_formatter___closed__5;
 lean_object* l_Lean_Parser_Term_liftMethod___closed__2;
 lean_object* l_Lean_Parser_Term_doUnless___elambda__1___closed__12;
+lean_object* l_Lean_Parser_Term_termFor___closed__4;
 lean_object* l_Lean_Parser_Term_doLetRec___closed__2;
 lean_object* l___regBuiltinParser_Lean_Parser_Term_doLet(lean_object*);
 lean_object* l_Lean_Parser_Term_do_parenthesizer___closed__1;
@@ -1403,6 +1513,7 @@ lean_object* l_Lean_Parser_Term_doElem_quot___closed__1;
 lean_object* l_Lean_Parser_Term_doTry___closed__5;
 lean_object* l_Lean_Parser_Term_doReassign_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Term_doIf___closed__11;
+lean_object* l_Lean_Parser_Term_termTry___elambda__1___closed__1;
 lean_object* l_Lean_PrettyPrinter_Parenthesizer_try_parenthesizer(lean_object*, lean_object*, lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doPatDecl___closed__8;
 lean_object* l_Lean_Parser_Term_do_parenthesizer___closed__2;
@@ -1429,6 +1540,7 @@ extern lean_object* l_Lean_Parser_Term_letDecl_parenthesizer___closed__6;
 lean_object* l_Lean_Parser_andthenFn(lean_object*, lean_object*, lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Term_doElem_quot_parenthesizer___closed__5;
 lean_object* l_Lean_Parser_Term_doDbgTrace___elambda__1___closed__8;
+lean_object* l___regBuiltin_Lean_Parser_Term_termFor_formatter___closed__1;
 static lean_object* _init_l_Lean_Parser_initFn____x40_Lean_Parser_Do___hyg_4____closed__1() {
 _start:
 {
@@ -3007,76 +3119,232 @@ return x_2;
 static lean_object* _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__18() {
 _start:
 {
-lean_object* x_1; lean_object* x_2; lean_object* x_3; 
-x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__14;
-x_2 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__17;
-x_3 = lean_alloc_closure((void*)(l_Lean_Parser_orelseFn), 4, 2);
-lean_closure_set(x_3, 0, x_1);
-lean_closure_set(x_3, 1, x_2);
-return x_3;
+lean_object* x_1; 
+x_1 = lean_mk_string("for");
+return x_1;
 }
 }
 static lean_object* _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__19() {
 _start:
 {
-lean_object* x_1; lean_object* x_2; lean_object* x_3; 
-x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__11;
-x_2 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__18;
-x_3 = lean_alloc_closure((void*)(l_Lean_Parser_orelseFn), 4, 2);
-lean_closure_set(x_3, 0, x_1);
-lean_closure_set(x_3, 1, x_2);
-return x_3;
+lean_object* x_1; lean_object* x_2; 
+x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__18;
+x_2 = l_String_trim(x_1);
+return x_2;
 }
 }
 static lean_object* _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__20() {
 _start:
 {
-lean_object* x_1; lean_object* x_2; lean_object* x_3; 
-x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__8;
-x_2 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__19;
-x_3 = lean_alloc_closure((void*)(l_Lean_Parser_orelseFn), 4, 2);
-lean_closure_set(x_3, 0, x_1);
-lean_closure_set(x_3, 1, x_2);
-return x_3;
+lean_object* x_1; lean_object* x_2; 
+x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__19;
+x_2 = lean_alloc_closure((void*)(l_Lean_Parser_symbolFn___boxed), 3, 1);
+lean_closure_set(x_2, 0, x_1);
+return x_2;
 }
 }
 static lean_object* _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__21() {
 _start:
 {
-lean_object* x_1; lean_object* x_2; lean_object* x_3; 
-x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__6;
-x_2 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__20;
-x_3 = lean_alloc_closure((void*)(l_Lean_Parser_orelseFn), 4, 2);
-lean_closure_set(x_3, 0, x_1);
-lean_closure_set(x_3, 1, x_2);
-return x_3;
+lean_object* x_1; 
+x_1 = lean_mk_string("unless");
+return x_1;
 }
 }
 static lean_object* _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__22() {
 _start:
 {
-lean_object* x_1; lean_object* x_2; lean_object* x_3; 
-x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__4;
-x_2 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__21;
-x_3 = lean_alloc_closure((void*)(l_Lean_Parser_orelseFn), 4, 2);
-lean_closure_set(x_3, 0, x_1);
-lean_closure_set(x_3, 1, x_2);
-return x_3;
+lean_object* x_1; lean_object* x_2; 
+x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__21;
+x_2 = l_String_trim(x_1);
+return x_2;
 }
 }
 static lean_object* _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__23() {
 _start:
 {
+lean_object* x_1; lean_object* x_2; 
+x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__22;
+x_2 = lean_alloc_closure((void*)(l_Lean_Parser_symbolFn___boxed), 3, 1);
+lean_closure_set(x_2, 0, x_1);
+return x_2;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__24() {
+_start:
+{
+lean_object* x_1; 
+x_1 = lean_mk_string("return");
+return x_1;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__25() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; 
+x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__24;
+x_2 = l_String_trim(x_1);
+return x_2;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__26() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; 
+x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__25;
+x_2 = lean_alloc_closure((void*)(l_Lean_Parser_symbolFn___boxed), 3, 1);
+lean_closure_set(x_2, 0, x_1);
+return x_2;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__27() {
+_start:
+{
+lean_object* x_1; 
+x_1 = lean_mk_string("try");
+return x_1;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__28() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; 
+x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__27;
+x_2 = l_String_trim(x_1);
+return x_2;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__29() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; 
+x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__28;
+x_2 = lean_alloc_closure((void*)(l_Lean_Parser_symbolFn___boxed), 3, 1);
+lean_closure_set(x_2, 0, x_1);
+return x_2;
+}
+}
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+}
+}
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+}
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+}
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+}
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+}
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+}
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+x_2 = l_Lean_Parser_Term_termReturn___elambda__1___closed__1;
+x_3 = lean_name_mk_string(x_1, x_2);
+return x_3;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn___elambda__1___closed__3() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; 
+x_1 = l_Lean_Parser_Term_termReturn___elambda__1___closed__2;
+x_2 = lean_alloc_ctor(1, 1, 0);
+lean_ctor_set(x_2, 0, x_1);
+return x_2;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn___elambda__1___closed__4() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; uint8_t x_3; lean_object* x_4; 
+x_1 = l_Lean_Parser_Term_termReturn___elambda__1___closed__1;
+x_2 = l_Lean_Parser_Term_termReturn___elambda__1___closed__3;
+x_3 = 1;
+x_4 = l_Lean_Parser_mkAntiquot(x_1, x_2, x_3);
+return x_4;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn___elambda__1___closed__5() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; lean_object* x_3; 
+x_1 = l_Lean_Parser_Term_termReturn___elambda__1___closed__2;
+x_2 = l_Lean_Parser_Term_doReturn___elambda__1___closed__9;
+x_3 = lean_alloc_closure((void*)(l_Lean_Parser_nodeFn), 4, 2);
+lean_closure_set(x_3, 0, x_1);
+lean_closure_set(x_3, 1, x_2);
+return x_3;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn___elambda__1___closed__6() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; lean_object* x_3; 
+x_1 = l_Lean_Parser_Term_byTactic___elambda__1___closed__9;
+x_2 = l_Lean_Parser_Term_termReturn___elambda__1___closed__5;
+x_3 = lean_alloc_closure((void*)(l_Lean_Parser_andthenFn), 4, 2);
+lean_closure_set(x_3, 0, x_1);
+lean_closure_set(x_3, 1, x_2);
+return x_3;
+}
+}
+lean_object* l_Lean_Parser_Term_termReturn___elambda__1(lean_object* x_1, lean_object* x_2) {
+_start:
+{
+lean_object* x_3; lean_object* x_4; lean_object* x_5; uint8_t x_6; lean_object* x_7; 
+x_3 = l_Lean_Parser_Term_termReturn___elambda__1___closed__4;
+x_4 = lean_ctor_get(x_3, 1);
+lean_inc(x_4);
+x_5 = l_Lean_Parser_Term_termReturn___elambda__1___closed__6;
+x_6 = 1;
+x_7 = l_Lean_Parser_orelseFnCore(x_4, x_5, x_6, x_1, x_2);
+return x_7;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn___closed__1() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; lean_object* x_3; 
+x_1 = l_Lean_Parser_Term_termReturn___elambda__1___closed__2;
+x_2 = l_Lean_Parser_Term_doReturn___closed__4;
+x_3 = l_Lean_Parser_nodeInfo(x_1, x_2);
+return x_3;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn___closed__2() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; lean_object* x_3; 
+x_1 = l_Lean_Parser_epsilonInfo;
+x_2 = l_Lean_Parser_Term_termReturn___closed__1;
+x_3 = l_Lean_Parser_andthenInfo(x_1, x_2);
+return x_3;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn___closed__3() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; lean_object* x_3; lean_object* x_4; 
+x_1 = l_Lean_Parser_Term_termReturn___elambda__1___closed__4;
+x_2 = lean_ctor_get(x_1, 0);
+lean_inc(x_2);
+x_3 = l_Lean_Parser_Term_termReturn___closed__2;
+x_4 = l_Lean_Parser_orelseInfo(x_2, x_3);
+return x_4;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn___closed__4() {
+_start:
+{
+lean_object* x_1; 
+x_1 = lean_alloc_closure((void*)(l_Lean_Parser_Term_termReturn___elambda__1), 2, 0);
+return x_1;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn___closed__5() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; lean_object* x_3; 
+x_1 = l_Lean_Parser_Term_termReturn___closed__3;
+x_2 = l_Lean_Parser_Term_termReturn___closed__4;
+x_3 = lean_alloc_ctor(0, 2, 0);
+lean_ctor_set(x_3, 0, x_1);
+lean_ctor_set(x_3, 1, x_2);
+return x_3;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn() {
+_start:
+{
+lean_object* x_1; 
+x_1 = l_Lean_Parser_Term_termReturn___closed__5;
+return x_1;
+}
+}
+lean_object* l___regBuiltinParser_Lean_Parser_Term_termReturn(lean_object* x_1) {
+_start:
+{
+lean_object* x_2; lean_object* x_3; uint8_t x_4; lean_object* x_5; lean_object* x_6; lean_object* x_7; 
+x_2 = l___kind_tactic____x40_Init_Tactics___hyg_461____closed__9;
+x_3 = l_Lean_Parser_Term_termReturn___elambda__1___closed__2;
+x_4 = 1;
+x_5 = l_Lean_Parser_Term_termReturn;
+x_6 = lean_unsigned_to_nat(0u);
+x_7 = l_Lean_Parser_addBuiltinParser(x_2, x_3, x_4, x_5, x_6, x_1);
+return x_7;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn_formatter___closed__1() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; uint8_t x_3; lean_object* x_4; lean_object* x_5; 
+x_1 = l_Lean_Parser_Term_termReturn___elambda__1___closed__1;
+x_2 = l_Lean_Parser_Term_termReturn___elambda__1___closed__3;
+x_3 = 1;
+x_4 = lean_box(x_3);
+x_5 = lean_alloc_closure((void*)(l_Lean_Parser_mkAntiquot_formatter___boxed), 8, 3);
+lean_closure_set(x_5, 0, x_1);
+lean_closure_set(x_5, 1, x_2);
+lean_closure_set(x_5, 2, x_4);
+return x_5;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn_formatter___closed__2() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; lean_object* x_3; lean_object* x_4; 
+x_1 = l_Lean_Parser_Term_termReturn___elambda__1___closed__2;
+x_2 = l_Lean_Parser_leadPrec;
+x_3 = l_Lean_Parser_Term_doReturn_formatter___closed__6;
+x_4 = lean_alloc_closure((void*)(l_Lean_Parser_leadingNode_formatter___boxed), 8, 3);
+lean_closure_set(x_4, 0, x_1);
+lean_closure_set(x_4, 1, x_2);
+lean_closure_set(x_4, 2, x_3);
+return x_4;
+}
+}
+lean_object* l_Lean_Parser_Term_termReturn_formatter(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5) {
+_start:
+{
+lean_object* x_6; lean_object* x_7; lean_object* x_8; 
+x_6 = l_Lean_Parser_Term_termReturn_formatter___closed__1;
+x_7 = l_Lean_Parser_Term_termReturn_formatter___closed__2;
+x_8 = l_Lean_PrettyPrinter_Formatter_orelse_formatter(x_6, x_7, x_1, x_2, x_3, x_4, x_5);
+return x_8;
+}
+}
+static lean_object* _init_l___regBuiltin_Lean_Parser_Term_termReturn_formatter___closed__1() {
+_start:
+{
+lean_object* x_1; 
+x_1 = lean_alloc_closure((void*)(l_Lean_Parser_Term_termReturn_formatter), 5, 0);
+return x_1;
+}
+}
+lean_object* l___regBuiltin_Lean_Parser_Term_termReturn_formatter(lean_object* x_1) {
+_start:
+{
+lean_object* x_2; lean_object* x_3; lean_object* x_4; lean_object* x_5; 
+x_2 = l_Lean_PrettyPrinter_formatterAttribute;
+x_3 = l_Lean_Parser_Term_termReturn___elambda__1___closed__2;
+x_4 = l___regBuiltin_Lean_Parser_Term_termReturn_formatter___closed__1;
+x_5 = l_Lean_KeyedDeclsAttribute_addBuiltin___rarg(x_2, x_3, x_4, x_1);
+return x_5;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn_parenthesizer___closed__1() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; uint8_t x_3; lean_object* x_4; lean_object* x_5; 
+x_1 = l_Lean_Parser_Term_termReturn___elambda__1___closed__1;
+x_2 = l_Lean_Parser_Term_termReturn___elambda__1___closed__3;
+x_3 = 1;
+x_4 = lean_box(x_3);
+x_5 = lean_alloc_closure((void*)(l_Lean_Parser_mkAntiquot_parenthesizer___boxed), 8, 3);
+lean_closure_set(x_5, 0, x_1);
+lean_closure_set(x_5, 1, x_2);
+lean_closure_set(x_5, 2, x_4);
+return x_5;
+}
+}
+static lean_object* _init_l_Lean_Parser_Term_termReturn_parenthesizer___closed__2() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; lean_object* x_3; lean_object* x_4; 
+x_1 = l_Lean_Parser_Term_termReturn___elambda__1___closed__2;
+x_2 = l_Lean_Parser_leadPrec;
+x_3 = l_Lean_Parser_Term_doReturn_parenthesizer___closed__6;
+x_4 = lean_alloc_closure((void*)(l_Lean_PrettyPrinter_Parenthesizer_leadingNode_parenthesizer___boxed), 8, 3);
+lean_closure_set(x_4, 0, x_1);
+lean_closure_set(x_4, 1, x_2);
+lean_closure_set(x_4, 2, x_3);
+return x_4;
+}
+}
+lean_object* l_Lean_Parser_Term_termReturn_parenthesizer(lean_object* x_1, lean_object* x_2, lean_object* x_3, lean_object* x_4, lean_object* x_5) {
+_start:
+{
+lean_object* x_6; lean_object* x_7; lean_object* x_8; 
+x_6 = l_Lean_Parser_Term_termReturn_parenthesizer___closed__1;
+x_7 = l_Lean_Parser_Term_termReturn_parenthesizer___closed__2;
+x_8 = l_Lean_PrettyPrinter_Parenthesizer_orelse_parenthesizer(x_6, x_7, x_1, x_2, x_3, x_4, x_5);
+return x_8;
+}
+}
+static lean_object* _init_l___regBuiltin_Lean_Parser_Term_termReturn_parenthesizer___closed__1() {
+_start:
+{
+lean_object* x_1; 
+x_1 = lean_alloc_closure((void*)(l_Lean_Parser_Term_termReturn_parenthesizer), 5, 0);
+return x_1;
+}
+}
+lean_object* l___regBuiltin_Lean_Parser_Term_termReturn_parenthesizer(lean_object* x_1) {
+_start:
+{
+lean_object* x_2; lean_object* x_3; lean_object* x_4; lean_object* x_5; 
+x_2 = l_Lean_PrettyPrinter_parenthesizerAttribute;
+x_3 = l_Lean_Parser_Term_termReturn___elambda__1___closed__2;
+x_4 = l___regBuiltin_Lean_Parser_Term_termReturn_parenthesizer___closed__1;
+x_5 = l_Lean_KeyedDeclsAttribute_addBuiltin___rarg(x_2, x_3, x_4, x_1);
+return x_5;
+}
+}
 lean_object* initialize_Init(lean_object*);
 lean_object* initialize_Lean_Parser_Term(lean_object*);
 static bool _G_initialized = false;
@@ -16048,6 +17376,38 @@ l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__23 = _
 lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__23);
 l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__24 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__24();
 lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__24);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__25 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__25();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__25);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__26 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__26();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__26);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__27 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__27();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__27);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__28 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__28();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__28);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__29 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__29();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__29);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__30 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__30();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__30);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__31 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__31();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__31);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__32 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__32();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__32);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__33 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__33();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__33);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__34 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__34();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__34);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__35 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__35();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__35);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__36 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__36();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__36);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__37 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__37();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__37);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__38 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__38();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__38);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__39 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__39();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__39);
+l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__40 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__40();
+lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__40);
 l_Lean_Parser_Term_notFollowedByRedefinedTermToken___closed__1 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___closed__1();
 lean_mark_persistent(l_Lean_Parser_Term_notFollowedByRedefinedTermToken___closed__1);
 l_Lean_Parser_Term_notFollowedByRedefinedTermToken___closed__2 = _init_l_Lean_Parser_Term_notFollowedByRedefinedTermToken___closed__2();
@@ -18016,6 +19376,186 @@ lean_mark_persistent(l___regBuiltin_Lean_Parser_Term_doElem_quot_parenthesizer__
 res = l___regBuiltin_Lean_Parser_Term_doElem_quot_parenthesizer(lean_io_mk_world());
 if (lean_io_result_is_error(res)) return res;
 lean_dec_ref(res);
+l_Lean_Parser_Term_termUnless___elambda__1___closed__1 = _init_l_Lean_Parser_Term_termUnless___elambda__1___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless___elambda__1___closed__1);
+l_Lean_Parser_Term_termUnless___elambda__1___closed__2 = _init_l_Lean_Parser_Term_termUnless___elambda__1___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless___elambda__1___closed__2);
+l_Lean_Parser_Term_termUnless___elambda__1___closed__3 = _init_l_Lean_Parser_Term_termUnless___elambda__1___closed__3();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless___elambda__1___closed__3);
+l_Lean_Parser_Term_termUnless___elambda__1___closed__4 = _init_l_Lean_Parser_Term_termUnless___elambda__1___closed__4();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless___elambda__1___closed__4);
+l_Lean_Parser_Term_termUnless___elambda__1___closed__5 = _init_l_Lean_Parser_Term_termUnless___elambda__1___closed__5();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless___elambda__1___closed__5);
+l_Lean_Parser_Term_termUnless___elambda__1___closed__6 = _init_l_Lean_Parser_Term_termUnless___elambda__1___closed__6();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless___elambda__1___closed__6);
+l_Lean_Parser_Term_termUnless___closed__1 = _init_l_Lean_Parser_Term_termUnless___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless___closed__1);
+l_Lean_Parser_Term_termUnless___closed__2 = _init_l_Lean_Parser_Term_termUnless___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless___closed__2);
+l_Lean_Parser_Term_termUnless___closed__3 = _init_l_Lean_Parser_Term_termUnless___closed__3();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless___closed__3);
+l_Lean_Parser_Term_termUnless___closed__4 = _init_l_Lean_Parser_Term_termUnless___closed__4();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless___closed__4);
+l_Lean_Parser_Term_termUnless___closed__5 = _init_l_Lean_Parser_Term_termUnless___closed__5();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless___closed__5);
+l_Lean_Parser_Term_termUnless = _init_l_Lean_Parser_Term_termUnless();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless);
+res = l___regBuiltinParser_Lean_Parser_Term_termUnless(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
+l_Lean_Parser_Term_termUnless_formatter___closed__1 = _init_l_Lean_Parser_Term_termUnless_formatter___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless_formatter___closed__1);
+l_Lean_Parser_Term_termUnless_formatter___closed__2 = _init_l_Lean_Parser_Term_termUnless_formatter___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless_formatter___closed__2);
+l___regBuiltin_Lean_Parser_Term_termUnless_formatter___closed__1 = _init_l___regBuiltin_Lean_Parser_Term_termUnless_formatter___closed__1();
+lean_mark_persistent(l___regBuiltin_Lean_Parser_Term_termUnless_formatter___closed__1);
+res = l___regBuiltin_Lean_Parser_Term_termUnless_formatter(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
+l_Lean_Parser_Term_termUnless_parenthesizer___closed__1 = _init_l_Lean_Parser_Term_termUnless_parenthesizer___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless_parenthesizer___closed__1);
+l_Lean_Parser_Term_termUnless_parenthesizer___closed__2 = _init_l_Lean_Parser_Term_termUnless_parenthesizer___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termUnless_parenthesizer___closed__2);
+l___regBuiltin_Lean_Parser_Term_termUnless_parenthesizer___closed__1 = _init_l___regBuiltin_Lean_Parser_Term_termUnless_parenthesizer___closed__1();
+lean_mark_persistent(l___regBuiltin_Lean_Parser_Term_termUnless_parenthesizer___closed__1);
+res = l___regBuiltin_Lean_Parser_Term_termUnless_parenthesizer(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
+l_Lean_Parser_Term_termFor___elambda__1___closed__1 = _init_l_Lean_Parser_Term_termFor___elambda__1___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termFor___elambda__1___closed__1);
+l_Lean_Parser_Term_termFor___elambda__1___closed__2 = _init_l_Lean_Parser_Term_termFor___elambda__1___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termFor___elambda__1___closed__2);
+l_Lean_Parser_Term_termFor___elambda__1___closed__3 = _init_l_Lean_Parser_Term_termFor___elambda__1___closed__3();
+lean_mark_persistent(l_Lean_Parser_Term_termFor___elambda__1___closed__3);
+l_Lean_Parser_Term_termFor___elambda__1___closed__4 = _init_l_Lean_Parser_Term_termFor___elambda__1___closed__4();
+lean_mark_persistent(l_Lean_Parser_Term_termFor___elambda__1___closed__4);
+l_Lean_Parser_Term_termFor___elambda__1___closed__5 = _init_l_Lean_Parser_Term_termFor___elambda__1___closed__5();
+lean_mark_persistent(l_Lean_Parser_Term_termFor___elambda__1___closed__5);
+l_Lean_Parser_Term_termFor___elambda__1___closed__6 = _init_l_Lean_Parser_Term_termFor___elambda__1___closed__6();
+lean_mark_persistent(l_Lean_Parser_Term_termFor___elambda__1___closed__6);
+l_Lean_Parser_Term_termFor___closed__1 = _init_l_Lean_Parser_Term_termFor___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termFor___closed__1);
+l_Lean_Parser_Term_termFor___closed__2 = _init_l_Lean_Parser_Term_termFor___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termFor___closed__2);
+l_Lean_Parser_Term_termFor___closed__3 = _init_l_Lean_Parser_Term_termFor___closed__3();
+lean_mark_persistent(l_Lean_Parser_Term_termFor___closed__3);
+l_Lean_Parser_Term_termFor___closed__4 = _init_l_Lean_Parser_Term_termFor___closed__4();
+lean_mark_persistent(l_Lean_Parser_Term_termFor___closed__4);
+l_Lean_Parser_Term_termFor___closed__5 = _init_l_Lean_Parser_Term_termFor___closed__5();
+lean_mark_persistent(l_Lean_Parser_Term_termFor___closed__5);
+l_Lean_Parser_Term_termFor = _init_l_Lean_Parser_Term_termFor();
+lean_mark_persistent(l_Lean_Parser_Term_termFor);
+res = l___regBuiltinParser_Lean_Parser_Term_termFor(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
+l_Lean_Parser_Term_termFor_formatter___closed__1 = _init_l_Lean_Parser_Term_termFor_formatter___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termFor_formatter___closed__1);
+l_Lean_Parser_Term_termFor_formatter___closed__2 = _init_l_Lean_Parser_Term_termFor_formatter___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termFor_formatter___closed__2);
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+lean_mark_persistent(l___regBuiltin_Lean_Parser_Term_termFor_formatter___closed__1);
+res = l___regBuiltin_Lean_Parser_Term_termFor_formatter(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
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+lean_mark_persistent(l_Lean_Parser_Term_termFor_parenthesizer___closed__1);
+l_Lean_Parser_Term_termFor_parenthesizer___closed__2 = _init_l_Lean_Parser_Term_termFor_parenthesizer___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termFor_parenthesizer___closed__2);
+l___regBuiltin_Lean_Parser_Term_termFor_parenthesizer___closed__1 = _init_l___regBuiltin_Lean_Parser_Term_termFor_parenthesizer___closed__1();
+lean_mark_persistent(l___regBuiltin_Lean_Parser_Term_termFor_parenthesizer___closed__1);
+res = l___regBuiltin_Lean_Parser_Term_termFor_parenthesizer(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
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+lean_mark_persistent(l_Lean_Parser_Term_termTry___elambda__1___closed__1);
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+lean_mark_persistent(l_Lean_Parser_Term_termTry___elambda__1___closed__2);
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+lean_mark_persistent(l_Lean_Parser_Term_termTry___elambda__1___closed__4);
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+lean_mark_persistent(l_Lean_Parser_Term_termTry___elambda__1___closed__5);
+l_Lean_Parser_Term_termTry___elambda__1___closed__6 = _init_l_Lean_Parser_Term_termTry___elambda__1___closed__6();
+lean_mark_persistent(l_Lean_Parser_Term_termTry___elambda__1___closed__6);
+l_Lean_Parser_Term_termTry___closed__1 = _init_l_Lean_Parser_Term_termTry___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termTry___closed__1);
+l_Lean_Parser_Term_termTry___closed__2 = _init_l_Lean_Parser_Term_termTry___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termTry___closed__2);
+l_Lean_Parser_Term_termTry___closed__3 = _init_l_Lean_Parser_Term_termTry___closed__3();
+lean_mark_persistent(l_Lean_Parser_Term_termTry___closed__3);
+l_Lean_Parser_Term_termTry___closed__4 = _init_l_Lean_Parser_Term_termTry___closed__4();
+lean_mark_persistent(l_Lean_Parser_Term_termTry___closed__4);
+l_Lean_Parser_Term_termTry___closed__5 = _init_l_Lean_Parser_Term_termTry___closed__5();
+lean_mark_persistent(l_Lean_Parser_Term_termTry___closed__5);
+l_Lean_Parser_Term_termTry = _init_l_Lean_Parser_Term_termTry();
+lean_mark_persistent(l_Lean_Parser_Term_termTry);
+res = l___regBuiltinParser_Lean_Parser_Term_termTry(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
+l_Lean_Parser_Term_termTry_formatter___closed__1 = _init_l_Lean_Parser_Term_termTry_formatter___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termTry_formatter___closed__1);
+l_Lean_Parser_Term_termTry_formatter___closed__2 = _init_l_Lean_Parser_Term_termTry_formatter___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termTry_formatter___closed__2);
+l___regBuiltin_Lean_Parser_Term_termTry_formatter___closed__1 = _init_l___regBuiltin_Lean_Parser_Term_termTry_formatter___closed__1();
+lean_mark_persistent(l___regBuiltin_Lean_Parser_Term_termTry_formatter___closed__1);
+res = l___regBuiltin_Lean_Parser_Term_termTry_formatter(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
+l_Lean_Parser_Term_termTry_parenthesizer___closed__1 = _init_l_Lean_Parser_Term_termTry_parenthesizer___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termTry_parenthesizer___closed__1);
+l_Lean_Parser_Term_termTry_parenthesizer___closed__2 = _init_l_Lean_Parser_Term_termTry_parenthesizer___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termTry_parenthesizer___closed__2);
+l___regBuiltin_Lean_Parser_Term_termTry_parenthesizer___closed__1 = _init_l___regBuiltin_Lean_Parser_Term_termTry_parenthesizer___closed__1();
+lean_mark_persistent(l___regBuiltin_Lean_Parser_Term_termTry_parenthesizer___closed__1);
+res = l___regBuiltin_Lean_Parser_Term_termTry_parenthesizer(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
+l_Lean_Parser_Term_termReturn___elambda__1___closed__1 = _init_l_Lean_Parser_Term_termReturn___elambda__1___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn___elambda__1___closed__1);
+l_Lean_Parser_Term_termReturn___elambda__1___closed__2 = _init_l_Lean_Parser_Term_termReturn___elambda__1___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn___elambda__1___closed__2);
+l_Lean_Parser_Term_termReturn___elambda__1___closed__3 = _init_l_Lean_Parser_Term_termReturn___elambda__1___closed__3();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn___elambda__1___closed__3);
+l_Lean_Parser_Term_termReturn___elambda__1___closed__4 = _init_l_Lean_Parser_Term_termReturn___elambda__1___closed__4();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn___elambda__1___closed__4);
+l_Lean_Parser_Term_termReturn___elambda__1___closed__5 = _init_l_Lean_Parser_Term_termReturn___elambda__1___closed__5();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn___elambda__1___closed__5);
+l_Lean_Parser_Term_termReturn___elambda__1___closed__6 = _init_l_Lean_Parser_Term_termReturn___elambda__1___closed__6();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn___elambda__1___closed__6);
+l_Lean_Parser_Term_termReturn___closed__1 = _init_l_Lean_Parser_Term_termReturn___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn___closed__1);
+l_Lean_Parser_Term_termReturn___closed__2 = _init_l_Lean_Parser_Term_termReturn___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn___closed__2);
+l_Lean_Parser_Term_termReturn___closed__3 = _init_l_Lean_Parser_Term_termReturn___closed__3();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn___closed__3);
+l_Lean_Parser_Term_termReturn___closed__4 = _init_l_Lean_Parser_Term_termReturn___closed__4();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn___closed__4);
+l_Lean_Parser_Term_termReturn___closed__5 = _init_l_Lean_Parser_Term_termReturn___closed__5();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn___closed__5);
+l_Lean_Parser_Term_termReturn = _init_l_Lean_Parser_Term_termReturn();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn);
+res = l___regBuiltinParser_Lean_Parser_Term_termReturn(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
+l_Lean_Parser_Term_termReturn_formatter___closed__1 = _init_l_Lean_Parser_Term_termReturn_formatter___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn_formatter___closed__1);
+l_Lean_Parser_Term_termReturn_formatter___closed__2 = _init_l_Lean_Parser_Term_termReturn_formatter___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn_formatter___closed__2);
+l___regBuiltin_Lean_Parser_Term_termReturn_formatter___closed__1 = _init_l___regBuiltin_Lean_Parser_Term_termReturn_formatter___closed__1();
+lean_mark_persistent(l___regBuiltin_Lean_Parser_Term_termReturn_formatter___closed__1);
+res = l___regBuiltin_Lean_Parser_Term_termReturn_formatter(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
+l_Lean_Parser_Term_termReturn_parenthesizer___closed__1 = _init_l_Lean_Parser_Term_termReturn_parenthesizer___closed__1();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn_parenthesizer___closed__1);
+l_Lean_Parser_Term_termReturn_parenthesizer___closed__2 = _init_l_Lean_Parser_Term_termReturn_parenthesizer___closed__2();
+lean_mark_persistent(l_Lean_Parser_Term_termReturn_parenthesizer___closed__2);
+l___regBuiltin_Lean_Parser_Term_termReturn_parenthesizer___closed__1 = _init_l___regBuiltin_Lean_Parser_Term_termReturn_parenthesizer___closed__1();
+lean_mark_persistent(l___regBuiltin_Lean_Parser_Term_termReturn_parenthesizer___closed__1);
+res = l___regBuiltin_Lean_Parser_Term_termReturn_parenthesizer(lean_io_mk_world());
+if (lean_io_result_is_error(res)) return res;
+lean_dec_ref(res);
 return lean_io_result_mk_ok(lean_box(0));
 }
 #ifdef __cplusplus
diff --git a/stage0/stdlib/Lean/Parser/Syntax.c b/stage0/stdlib/Lean/Parser/Syntax.c
index 8e5229791f..03ad0b3629 100644
--- a/stage0/stdlib/Lean/Parser/Syntax.c
+++ b/stage0/stdlib/Lean/Parser/Syntax.c
@@ -437,7 +437,6 @@ lean_object* l_Lean_Parser_Command_infix_formatter___closed__3;
 lean_object* l_Lean_Parser_Syntax_char___closed__2;
 lean_object* l_Lean_Parser_Command_postfix___elambda__1___closed__8;
 extern lean_object* l_Lean_Parser_Term_syntheticHole___closed__1;
-lean_object* l_Lean_Parser_Syntax_try___elambda__1___closed__8;
 lean_object* l_Lean_Parser_Syntax_noWs_parenthesizer___closed__1;
 lean_object* l_Lean_Parser_Command_parserKindPrio___closed__2;
 lean_object* l_Lean_Parser_checkPrecFn(lean_object*, lean_object*, lean_object*);
@@ -1705,6 +1704,7 @@ lean_object* l_Lean_Parser_Command_macroTail___closed__3;
 lean_object* l_Lean_Parser_Command_macroTail___closed__1;
 lean_object* l_Lean_Parser_Syntax_try___elambda__1___closed__2;
 lean_object* l_Lean_Parser_Command_mixfixKind_formatter___closed__4;
+extern lean_object* l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__27;
 lean_object* l_Lean_PrettyPrinter_Parenthesizer_identEq_parenthesizer___boxed(lean_object*, lean_object*);
 lean_object* l_Lean_Parser_Command_infixl_formatter___closed__3;
 lean_object* l___regBuiltin_Lean_Parser_Command_macro_parenthesizer(lean_object*);
@@ -5616,43 +5616,35 @@ return x_5;
 static lean_object* _init_l_Lean_Parser_Syntax_try___elambda__1___closed__1() {
 _start:
 {
-lean_object* x_1; 
-x_1 = lean_mk_string("try");
-return x_1;
+lean_object* x_1; lean_object* x_2; lean_object* x_3; 
+x_1 = l_Lean_Parser_Syntax_paren___elambda__1___closed__2;
+x_2 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__27;
+x_3 = lean_name_mk_string(x_1, x_2);
+return x_3;
 }
 }
 static lean_object* _init_l_Lean_Parser_Syntax_try___elambda__1___closed__2() {
 _start:
 {
-lean_object* x_1; lean_object* x_2; lean_object* x_3; 
-x_1 = l_Lean_Parser_Syntax_paren___elambda__1___closed__2;
-x_2 = l_Lean_Parser_Syntax_try___elambda__1___closed__1;
-x_3 = lean_name_mk_string(x_1, x_2);
-return x_3;
-}
-}
-static lean_object* _init_l_Lean_Parser_Syntax_try___elambda__1___closed__3() {
-_start:
-{
 lean_object* x_1; lean_object* x_2; 
-x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__2;
+x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__1;
 x_2 = lean_alloc_ctor(1, 1, 0);
 lean_ctor_set(x_2, 0, x_1);
 return x_2;
 }
 }
-static lean_object* _init_l_Lean_Parser_Syntax_try___elambda__1___closed__4() {
+static lean_object* _init_l_Lean_Parser_Syntax_try___elambda__1___closed__3() {
 _start:
 {
 lean_object* x_1; lean_object* x_2; uint8_t x_3; lean_object* x_4; 
-x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__1;
-x_2 = l_Lean_Parser_Syntax_try___elambda__1___closed__3;
+x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__27;
+x_2 = l_Lean_Parser_Syntax_try___elambda__1___closed__2;
 x_3 = 1;
 x_4 = l_Lean_Parser_mkAntiquot(x_1, x_2, x_3);
 return x_4;
 }
 }
-static lean_object* _init_l_Lean_Parser_Syntax_try___elambda__1___closed__5() {
+static lean_object* _init_l_Lean_Parser_Syntax_try___elambda__1___closed__4() {
 _start:
 {
 lean_object* x_1; lean_object* x_2; 
@@ -5662,13 +5654,25 @@ lean_closure_set(x_2, 0, x_1);
 return x_2;
 }
 }
+static lean_object* _init_l_Lean_Parser_Syntax_try___elambda__1___closed__5() {
+_start:
+{
+lean_object* x_1; lean_object* x_2; lean_object* x_3; 
+x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__4;
+x_2 = l_Lean_Parser_Syntax_interpolatedStr___elambda__1___closed__7;
+x_3 = lean_alloc_closure((void*)(l_Lean_Parser_andthenFn), 4, 2);
+lean_closure_set(x_3, 0, x_1);
+lean_closure_set(x_3, 1, x_2);
+return x_3;
+}
+}
 static lean_object* _init_l_Lean_Parser_Syntax_try___elambda__1___closed__6() {
 _start:
 {
 lean_object* x_1; lean_object* x_2; lean_object* x_3; 
-x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__5;
-x_2 = l_Lean_Parser_Syntax_interpolatedStr___elambda__1___closed__7;
-x_3 = lean_alloc_closure((void*)(l_Lean_Parser_andthenFn), 4, 2);
+x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__1;
+x_2 = l_Lean_Parser_Syntax_try___elambda__1___closed__5;
+x_3 = lean_alloc_closure((void*)(l_Lean_Parser_nodeFn), 4, 2);
 lean_closure_set(x_3, 0, x_1);
 lean_closure_set(x_3, 1, x_2);
 return x_3;
@@ -5678,20 +5682,8 @@ static lean_object* _init_l_Lean_Parser_Syntax_try___elambda__1___closed__7() {
 _start:
 {
 lean_object* x_1; lean_object* x_2; lean_object* x_3; 
-x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__2;
-x_2 = l_Lean_Parser_Syntax_try___elambda__1___closed__6;
-x_3 = lean_alloc_closure((void*)(l_Lean_Parser_nodeFn), 4, 2);
-lean_closure_set(x_3, 0, x_1);
-lean_closure_set(x_3, 1, x_2);
-return x_3;
-}
-}
-static lean_object* _init_l_Lean_Parser_Syntax_try___elambda__1___closed__8() {
-_start:
-{
-lean_object* x_1; lean_object* x_2; lean_object* x_3; 
 x_1 = l_Lean_Parser_Level_paren___elambda__1___closed__8;
-x_2 = l_Lean_Parser_Syntax_try___elambda__1___closed__7;
+x_2 = l_Lean_Parser_Syntax_try___elambda__1___closed__6;
 x_3 = lean_alloc_closure((void*)(l_Lean_Parser_andthenFn), 4, 2);
 lean_closure_set(x_3, 0, x_1);
 lean_closure_set(x_3, 1, x_2);
@@ -5702,10 +5694,10 @@ lean_object* l_Lean_Parser_Syntax_try___elambda__1(lean_object* x_1, lean_object
 _start:
 {
 lean_object* x_3; lean_object* x_4; lean_object* x_5; uint8_t x_6; lean_object* x_7; 
-x_3 = l_Lean_Parser_Syntax_try___elambda__1___closed__4;
+x_3 = l_Lean_Parser_Syntax_try___elambda__1___closed__3;
 x_4 = lean_ctor_get(x_3, 1);
 lean_inc(x_4);
-x_5 = l_Lean_Parser_Syntax_try___elambda__1___closed__8;
+x_5 = l_Lean_Parser_Syntax_try___elambda__1___closed__7;
 x_6 = 1;
 x_7 = l_Lean_Parser_orelseFnCore(x_4, x_5, x_6, x_1, x_2);
 return x_7;
@@ -5737,7 +5729,7 @@ static lean_object* _init_l_Lean_Parser_Syntax_try___closed__3() {
 _start:
 {
 lean_object* x_1; lean_object* x_2; lean_object* x_3; 
-x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__2;
+x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__1;
 x_2 = l_Lean_Parser_Syntax_try___closed__2;
 x_3 = l_Lean_Parser_nodeInfo(x_1, x_2);
 return x_3;
@@ -5757,7 +5749,7 @@ static lean_object* _init_l_Lean_Parser_Syntax_try___closed__5() {
 _start:
 {
 lean_object* x_1; lean_object* x_2; lean_object* x_3; lean_object* x_4; 
-x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__4;
+x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__3;
 x_2 = lean_ctor_get(x_1, 0);
 lean_inc(x_2);
 x_3 = l_Lean_Parser_Syntax_try___closed__4;
@@ -5798,7 +5790,7 @@ _start:
 {
 lean_object* x_2; lean_object* x_3; uint8_t x_4; lean_object* x_5; lean_object* x_6; lean_object* x_7; 
 x_2 = l_Lean_Parser_categoryParserFnImpl___closed__4;
-x_3 = l_Lean_Parser_Syntax_try___elambda__1___closed__2;
+x_3 = l_Lean_Parser_Syntax_try___elambda__1___closed__1;
 x_4 = 1;
 x_5 = l_Lean_Parser_Syntax_try;
 x_6 = lean_unsigned_to_nat(0u);
@@ -5810,8 +5802,8 @@ static lean_object* _init_l_Lean_Parser_Syntax_try_formatter___closed__1() {
 _start:
 {
 lean_object* x_1; lean_object* x_2; uint8_t x_3; lean_object* x_4; lean_object* x_5; 
-x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__1;
-x_2 = l_Lean_Parser_Syntax_try___elambda__1___closed__3;
+x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__27;
+x_2 = l_Lean_Parser_Syntax_try___elambda__1___closed__2;
 x_3 = 1;
 x_4 = lean_box(x_3);
 x_5 = lean_alloc_closure((void*)(l_Lean_Parser_mkAntiquot_formatter___boxed), 8, 3);
@@ -5847,7 +5839,7 @@ static lean_object* _init_l_Lean_Parser_Syntax_try_formatter___closed__4() {
 _start:
 {
 lean_object* x_1; lean_object* x_2; lean_object* x_3; lean_object* x_4; 
-x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__2;
+x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__1;
 x_2 = lean_unsigned_to_nat(1024u);
 x_3 = l_Lean_Parser_Syntax_try_formatter___closed__3;
 x_4 = lean_alloc_closure((void*)(l_Lean_Parser_leadingNode_formatter___boxed), 8, 3);
@@ -5880,7 +5872,7 @@ _start:
 {
 lean_object* x_2; lean_object* x_3; lean_object* x_4; lean_object* x_5; 
 x_2 = l_Lean_PrettyPrinter_formatterAttribute;
-x_3 = l_Lean_Parser_Syntax_try___elambda__1___closed__2;
+x_3 = l_Lean_Parser_Syntax_try___elambda__1___closed__1;
 x_4 = l___regBuiltin_Lean_Parser_Syntax_try_formatter___closed__1;
 x_5 = l_Lean_KeyedDeclsAttribute_addBuiltin___rarg(x_2, x_3, x_4, x_1);
 return x_5;
@@ -5890,8 +5882,8 @@ static lean_object* _init_l_Lean_Parser_Syntax_try_parenthesizer___closed__1() {
 _start:
 {
 lean_object* x_1; lean_object* x_2; uint8_t x_3; lean_object* x_4; lean_object* x_5; 
-x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__1;
-x_2 = l_Lean_Parser_Syntax_try___elambda__1___closed__3;
+x_1 = l_Lean_Parser_Term_notFollowedByRedefinedTermToken___elambda__1___closed__27;
+x_2 = l_Lean_Parser_Syntax_try___elambda__1___closed__2;
 x_3 = 1;
 x_4 = lean_box(x_3);
 x_5 = lean_alloc_closure((void*)(l_Lean_Parser_mkAntiquot_parenthesizer___boxed), 8, 3);
@@ -5930,7 +5922,7 @@ static lean_object* _init_l_Lean_Parser_Syntax_try_parenthesizer___closed__4() {
 _start:
 {
 lean_object* x_1; lean_object* x_2; lean_object* x_3; lean_object* x_4; 
-x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__2;
+x_1 = l_Lean_Parser_Syntax_try___elambda__1___closed__1;
 x_2 = lean_unsigned_to_nat(1024u);
 x_3 = l_Lean_Parser_Syntax_try_parenthesizer___closed__3;
 x_4 = lean_alloc_closure((void*)(l_Lean_PrettyPrinter_Parenthesizer_leadingNode_parenthesizer___boxed), 8, 3);
@@ -5963,7 +5955,7 @@ _start:
 {
 lean_object* x_2; lean_object* x_3; lean_object* x_4; lean_object* x_5; 
 x_2 = l_Lean_PrettyPrinter_parenthesizerAttribute;
-x_3 = l_Lean_Parser_Syntax_try___elambda__1___closed__2;
+x_3 = l_Lean_Parser_Syntax_try___elambda__1___closed__1;
 x_4 = l___regBuiltin_Lean_Parser_Syntax_try_parenthesizer___closed__1;
 x_5 = l_Lean_KeyedDeclsAttribute_addBuiltin___rarg(x_2, x_3, x_4, x_1);
 return x_5;
@@ -19789,8 +19781,6 @@ l_Lean_Parser_Syntax_try___elambda__1___closed__6 = _init_l_Lean_Parser_Syntax_t
 lean_mark_persistent(l_Lean_Parser_Syntax_try___elambda__1___closed__6);
 l_Lean_Parser_Syntax_try___elambda__1___closed__7 = _init_l_Lean_Parser_Syntax_try___elambda__1___closed__7();
 lean_mark_persistent(l_Lean_Parser_Syntax_try___elambda__1___closed__7);
-l_Lean_Parser_Syntax_try___elambda__1___closed__8 = _init_l_Lean_Parser_Syntax_try___elambda__1___closed__8();
-lean_mark_persistent(l_Lean_Parser_Syntax_try___elambda__1___closed__8);
 l_Lean_Parser_Syntax_try___closed__1 = _init_l_Lean_Parser_Syntax_try___closed__1();
 lean_mark_persistent(l_Lean_Parser_Syntax_try___closed__1);
 l_Lean_Parser_Syntax_try___closed__2 = _init_l_Lean_Parser_Syntax_try___closed__2();