def cluster.letter
import shake@0.7.0.0/src/cli.bend as Cliimport Base
945# one letter of a cluster, unless an earlier one ended it
946def cluster.letter(done: Bool, +cc: Char, +rest: String, +orig: String, st: St) -> St:
947 match done:
948 case True{}:
949 st
950 case False{}:
951 cluster.apply(st, cc, rest, orig)