Plan.walk.dirs: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/lint/plan.bend as Plan
Lines 67-75 of bolt@1.27.0.0/src/lint/plan.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/lint/plan.bend&start_line=67&end_line=75

import Base

# the sub-directories of a listing worth descending into, as paths
def walk.dirs(es: List<&2, String>, +dir: String) -> List<&2, String>:
  match es:
    case Nil{}:
      Nil{}
    case Con{+e, rest}:
      +more = walk.dirs(rest, dir)
      +keep = Bool.and(String.ends_with(e, "/"), Bool.not(walk.skipped(walk.bare(e))))
      Bool.pick(List<&2, String>, keep, walk.under(dir, walk.bare(e)) <> more, more)

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.pick
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.ends_with
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/lint/plan.bend&name=walk.bare
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/lint/plan.bend&name=walk.skipped
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/lint/plan.bend&name=walk.under