def tokens.feed
import emerging-ezjson@1.3.0.0/src/lex.bend as Leximport Base
402def tokens.feed(+ch: Char, tail: String, st: Scan) -> Scan:
403 match st:
404 case Old{lex}:
405 Old{feed(ch, lex)}
406 case Go{cut, n, mode, toks}:
407 tokens.hit(ch, tail, cut, n, mode, toks, classify(ch), U32.is_lt(Char.to_u32(ch), 32))