Plan.stray.first: def of ezx@1.11.0.0
Import: import ezx@1.11.0.0/src/pub/plan.bend as Plan
Lines 508-513 of ezx@1.11.0.0/src/pub/plan.bend: https://jend.leeeet.dev/read.txt?path=ezx@1.11.0.0/src/pub/plan.bend&start_line=508&end_line=513

import Base

def stray.first(+ls: List<&2, String>, ps: List<&2, String>) -> String:
  match ps:
    case []:
      ""
    case +h <> t:
      stray.step(tracked.has(ls, h), h, _u => stray.first(ls, t))

Uses (4):
  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=ezx@1.11.0.0/src/pub/plan.bend&name=stray.step
  https://jend.leeeet.dev/definition.txt?path=ezx@1.11.0.0/src/pub/plan.bend&name=tracked.has