fn walk(
corpus: &Corpus,
transcribe: impl FnMut(usize, &Clip) -> Result<ClipOutcome, Error>,
on_clip: impl FnMut(&ClipRun) -> ControlFlow<()>,
) -> Result<Vec<ClipRun>, Error>Expand description
Walk the corpus, handing each clip’s outcome to on_clip; a Break
stops the run where it stands.