Concat.via.of: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/rules/suspicious/concat.bend as Concat
Lines 98-104 of bolt@1.27.0.0/src/rules/suspicious/concat.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/rules/suspicious/concat.bend&start_line=98&end_line=104

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

# what the let of a lone name appends onto
def via.of(mm: Maybe<&2, Lex.Tok>, +lets: List<&2, Let>) -> Maybe<&2, Lex.Tok>:
  match mm:
    case None{}:
      None{}
    case Some{Lex.Tok{k, +t, l, c}}:
      find(lets, t)

Uses (5):
  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/concat.bend&name=Let
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/suspicious/concat.bend&name=find
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/syntax/lex.bend&name=Tok