(command.AndOr
  ops: [Id.Op_DAmp]
  children: [
    (command.ShFunction
      name: _rrdtool
      body: 
        (command.BraceGroup
          children: [
            (C {<local>} {<cur>} {<prev>} {<words>} {<cword>})
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (C {<_init_completion>})
                (command.ControlFlow token:<Id.ControlFlow_Return return>)
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.Binary
                              op_id: Id.BoolBinary_eq
                              left: 
                                {
                                  (braced_var_sub
                                    token: <Id.VSub_Name words>
                                    prefix_op: (Id.VSub_Pound)
                                    bracket_op: (bracket_op.WholeArray op_id:Id.Lit_At)
                                  )
                                }
                              right: {<2>}
                            )
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:COMPREPLY)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (sh_array_literal
                                left: <Id.Op_LParen _>
                                words: [
                                  {
                                    (command_sub
                                      left_token: <Id.Left_DollarParen '$('>
                                      command_list: 
                                        (command.CommandList
                                          children: [
                                            (C {<compgen>} {<-W>} 
                                              {
                                                (SQ <'create update updatev graph dump restore\n'> 
                                                  <
'            last lastupdate first info fetch tune resize xport'
                                                  >
                                                )
                                              } {<-->} {(DQ ($ Id.VSub_DollarName '$cur'))}
                                            )
                                          ]
                                        )
                                    )
                                  }
                                ]
                              )
                            }
                          spids: [53]
                        )
                      ]
                    )
                  ]
                  spids: [31 50]
                )
              ]
              else_action: [(C {<_filedir>} {<rrd>})]
            )
          ]
        )
    )
    (C {<complete>} {<-F>} {<_rrdtool>} {<rrdtool>})
  ]
)