def step.tag.at
import emerging-ezaudio@0.4.0.0/src/wav.bend as Wavimport Base
246def step.tag.at(
247 last: Bool, +left: U32, +sz: U32, +seen: U32, +kind: U32, +ch: U32, +rate: U32,
248 acc: List<&2, U32>, frames: List<&2, U32>
249) -> St:
250 match last:
251 case False{}:
252 st.set(0, (left - 1 : U32), 0, sz, seen, kind, ch, rate, acc, frames)
253 case True{}:
254 st.set(1, 4, word.of(acc, 1), sz, seen, kind, ch, rate, [], frames)