(&self)
| 120 | /// re-abstracted into de Bruijn binders before the result escapes the |
| 121 | /// open scope. The flag lets callers (substitution, `abstract_fvars`, |
| 122 | /// soundness assertions) skip walks when no fvars are reachable. |
| 123 | pub has_fvars: bool, |
| 124 | /// Lean mdata annotations. Semantically transparent, erased in Anon mode. |
| 125 | pub mdata: M::MField<Vec<MData>>, |
| 126 | /// Original level-spelling decoration (Meta-mode `Sort`/`Const` only; |
| 127 | /// `None` everywhere else and when the stored spelling is already |