Empty.at: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/rules/suspicious/empty.bend as Empty
Lines 259-266 of bolt@1.27.0.0/src/rules/suspicious/empty.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/rules/suspicious/empty.bend&start_line=259&end_line=266

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

# a token of kind k0, then these: a kept test?
def at(k0: Lex.TokKind, toks: List<&2, Lex.Tok>) -> Maybe<&2, Hit>:
  match toks:
    case Con{Lex.Tok{k1, +t1, +l1, +c1}, Con{Lex.Tok{k2, +t2, l2, c2}, Con{Lex.Tok{+k3, +t3, l3, c3},
      Con{Lex.Tok{k4, +t4, l4, c4}, r4}}}}:
      at.go(head(k0, k1, t1, k2, t2, k3, k4, t4), form(code(k3, t3)), l1, c1, r4)
    case other:
      None{}

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/suspicious/empty.bend&name=Hit
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/suspicious/empty.bend&name=at.go
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/suspicious/empty.bend&name=code
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/suspicious/empty.bend&name=form
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/suspicious/empty.bend&name=head
  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/lex.bend&name=TokKind