b 0
b 1
b 2
b 2.5
t 0
t 1
t 2
t 2
{"version": 3,
 "uri": "file:///incrementalTactic.lean",
 "diagnostics":
 [{"source": "Lean 4",
   "severity": 1,
   "range":
   {"start": {"line": 4, "character": 4}, "end": {"line": 4, "character": 13}},
   "message":
   "tactic 'introN' failed, insufficient number of binders\na n : Nat\n⊢ True",
   "fullRange":
   {"start": {"line": 4, "character": 4}, "end": {"line": 4, "character": 13}}},
  {"source": "Lean 4",
   "severity": 1,
   "range":
   {"start": {"line": 2, "character": 22}, "end": {"line": 3, "character": 0}},
   "message": "unsolved goals\nthis : Nat → Nat → True\n⊢ True",
   "fullRange":
   {"start": {"line": 2, "character": 22},
    "end": {"line": 10, "character": 11}}}]}
{"version": 1,
 "uri": "file:///incrementalTactic.lean",
 "diagnostics":
 [{"source": "Lean 4",
   "severity": 1,
   "range":
   {"start": {"line": 1, "character": 38}, "end": {"line": 4, "character": 3}},
   "message": "unexpected token '/-!'; expected ')', '_', identifier or term",
   "fullRange":
   {"start": {"line": 1, "character": 38},
    "end": {"line": 4, "character": 3}}}]}
{"version": 1,
 "uri": "file:///incrementalTactic.lean",
 "diagnostics":
 [{"source": "Lean 4",
   "severity": 1,
   "range":
   {"start": {"line": 2, "character": 9}, "end": {"line": 2, "character": 11}},
   "message": "unknown identifier 'no'",
   "fullRange":
   {"start": {"line": 2, "character": 9}, "end": {"line": 2, "character": 11}}},
  {"source": "Lean 4",
   "severity": 1,
   "range":
   {"start": {"line": 3, "character": 9}, "end": {"line": 3, "character": 16}},
   "message": "unsolved goals\n⊢ Nat",
   "fullRange":
   {"start": {"line": 3, "character": 9},
    "end": {"line": 3, "character": 16}}}]}
s
{ goals := #[{ type := Lean.Widget.TaggedText.tag
                         { subexprPos := "/", diffStatus? := none }
                         (Lean.Widget.TaggedText.text "True"),
               isInserted? := some false,
               isRemoved? := none,
               hyps := #[] }] }

{"version": 1,
 "uri": "file:///incrementalTactic.lean",
 "diagnostics":
 [{"source": "Lean 4",
   "severity": 1,
   "range":
   {"start": {"line": 2, "character": 8}, "end": {"line": 2, "character": 25}},
   "message":
   "tactic 'rewrite' failed, did not find instance of the pattern in the target expression\n  0\n⊢ True",
   "fullRange":
   {"start": {"line": 2, "character": 8},
    "end": {"line": 2, "character": 25}}}]}