def until.sequence
import gralha-text-scan@0.1.0.1/scan.bend as Scanimport Base
103def until.sequence(+s: String, +end: String, +acc: String) -> Scan:
104 match s:
105 case SNil{}: Scan{rev(acc, ""), ""}
106 case SCon{c, t}: branch(Scan, prefix(s, end), _ => Scan{rev(acc, ""), drop(s, end)}, _ => until.sequence(t, end, SCon{c, acc}))