(command.CommandList
  children: [
    (command.CommandList
      children: [
        (command.Sentence
          child: 
            (C {<.>} 
              {
                (DQ 
                  (braced_var_sub
                    token: <Id.VSub_Name srcdir>
                    suffix_op: (suffix_op.Unary tok:<Id.VTest_Equals '='> arg_word:{<.>})
                  ) <'/tests/init.sh'>
                )
              }
            )
          terminator: <Id.Op_Semi _>
        )
        (C {<path_prepend_>} {<'./src'>})
      ]
    )
    (C {<print_ver_>} {<touch>})
    (C {<mkfifo_or_skip_>} {<fifo>})
    (command.AndOr
      ops: [Id.Op_DPipe]
      children: [
        (C {<touch>} {<fifo>})
        (command.ShAssignment
          pairs: [
            (assign_pair
              lhs: (sh_lhs_expr.Name name:fail)
              op: assign_op.Equal
              rhs: {<1>}
              spids: [77]
            )
          ]
        )
      ]
    )
    (C {<Exit>} {($ Id.VSub_DollarName '$fail')})
  ]
)