(CommandList
  children: [
    (SimpleCommand
      words: [{(printf)} {(SQ <"xcode_locator should not be invoked on non-darwin systems\\n">)}]
      redirects: [(Redir op_id:Redir_GreatAnd fd:-1 arg_word:{(2)} spids:[52])]
    )
    (C {(exit)} {(1)})
  ]
)