Pick.search.lone: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/rules/correctness/pick.bend as Pick
Lines 201-207 of bolt@1.27.0.0/src/rules/correctness/pick.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/rules/correctness/pick.bend&start_line=201&end_line=207

import Base
import bolt@1.27.0.0/src/syntax/lex.bend as Lex
import bolt@1.27.0.0/src/syntax/tree.bend as Tree

# is the chain the one name xx alone?
def search.lone(nn: Tree.Node, +xx: String) -> Bool:
  match nn:
    case Tree.NCons{Tree.Leaf{Lex.Tok{_k, +t, _l, _c}}, rest}:
      Bool.and(String.eq(t, xx), search.empty(rest))
    case _other:
      False{}

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.eq
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/correctness/pick.bend&name=search.empty
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/syntax/lex.bend&name=Tok
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/syntax/tree.bend&name=Node