ReplaceResult

Outcome of a Span.replace call.

deleted_text and inserted_text cover the whole span for an untracked replace but only the affix-trimmed middle for a tracked one, so comparing them against Span.text is wrong for tracked edits. preserved_formatting_regions reports whether an ordinary replacement kept every changed formatting region rather than intentionally inheriting the changed interval's starting run properties; for a no-op, it records that no formatting changed. It is independent of revision evidence.

ReplaceResult(story: str, deleted_text: str, inserted_text: str, tracked: bool, revision_ids: Tuple[int, ...], preserved_revision_ids: Tuple[int, ...] = (), preserved_formatting_regions: bool = False)