(command.CommandList
  children: [
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:DIR)
          op: assign_op.Equal
          rhs: 
            {
              (DQ 
                (command_sub
                  left_token: <Id.Left_DollarParen '$('>
                  command_list: 
                    (command.CommandList
                      children: [
                        (command.AndOr
                          ops: [Id.Op_DAmp]
                          children: [
                            (C {<cd>} 
                              {
                                (DQ 
                                  (command_sub
                                    left_token: <Id.Left_DollarParen '$('>
                                    command_list: 
                                      (command.CommandList
                                        children: [
                                          (C {<dirname>} 
                                            {
                                              (DQ 
                                                (braced_var_sub
                                                  token: <Id.VSub_Name BASH_SOURCE>
                                                  bracket_op: 
                                                    (bracket_op.ArrayIndex
                                                      expr: 
                                                        (arith_expr.ArithWord
                                                          w: {<Id.Lit_Digits 0>}
                                                        )
                                                    )
                                                )
                                              )
                                            }
                                          )
                                        ]
                                      )
                                  )
                                )
                              }
                            )
                            (C {<pwd>})
                          ]
                        )
                      ]
                    )
                )
              )
            }
          spids: [4]
        )
      ]
    )
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:REFMT)
          op: assign_op.Equal
          rhs: {(DQ )}
          spids: [35]
        )
      ]
    )
    (command.If
      arms: [
        (if_arm
          cond: [
            (command.Sentence
              child: 
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_f
                      child: {($ Id.VSub_DollarName '$DIR') </refmt_impl.native>}
                    )
                )
              terminator: <Id.Op_Semi _>
            )
          ]
          action: [
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:REFMT)
                  op: assign_op.Equal
                  rhs: {(DQ ($ Id.VSub_DollarName '$DIR') </refmt_impl.native>)}
                  spids: [55]
                )
              ]
            )
          ]
          spids: [40 52]
        )
      ]
    )
    (command.If
      arms: [
        (if_arm
          cond: [
            (command.Sentence
              child: 
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_f
                      child: {($ Id.VSub_DollarName '$DIR') </refmt>}
                    )
                )
              terminator: <Id.Op_Semi _>
            )
          ]
          action: [
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:REFMT)
                  op: assign_op.Equal
                  rhs: {(DQ ($ Id.VSub_DollarName '$DIR') </refmt>)}
                  spids: [79]
                )
              ]
            )
          ]
          spids: [64 76]
        )
      ]
    )
    (command.If
      arms: [
        (if_arm
          cond: [
            (command.Sentence
              child: 
                (command.DBracket
                  expr: (bool_expr.Unary op_id:Id.BoolUnary_z child:{($ Id.VSub_DollarName '$REFMT')})
                )
              terminator: <Id.Op_Semi _>
            )
          ]
          action: [
            (command.Simple
              words: [{<echo>} {(DQ <"Couldn't find refmt">)}]
              redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})]
            )
            (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>})
          ]
          spids: [88 99]
        )
      ]
    )
    (C {($ Id.VSub_DollarName '$REFMT')} {($ Id.VSub_At '$@')} {<-recoverable>} {<true>} {<-parse>} {<re>})
  ]
)