(CommandList
  children: [
    (C {(set)} {(-ex)})
    (C {(cp)} {(-r)} 
      {
        (CommandSubPart
          command_list: (CommandList children:[(C {(dirname)} {(DQ ($ VSub_Name '$BASH_SOURCE'))})])
          left_token: <Left_CommandSub '$('>
          spids: [67 73]
        ) (/../../format)
      } {(_docs/format)}
    )
  ]
)