(CommandList
  children: [
    (AndOr
      children: [
        (FuncDef
          name: _newgrp
          body: 
            (BraceGroup
              children: [
                (Assignment
                  keyword: Assign_Local
                  pairs: [
                    (assign_pair lhs:(LhsName name:cur) op:Equal spids:[20])
                    (assign_pair lhs:(LhsName name:prev) op:Equal spids:[22])
                    (assign_pair lhs:(LhsName name:words) op:Equal spids:[24])
                    (assign_pair lhs:(LhsName name:cword) op:Equal spids:[26])
                  ]
                  spids: [18]
                )
                (AndOr
                  children: [(C {(_init_completion)}) (ControlFlow token:<ControlFlow_Return return>)]
                  op_id: Op_DPipe
                )
                (If
                  arms: [
                    (if_arm
                      cond: [
                        (Sentence
                          child: 
                            (DBracket
                              expr: 
                                (BoolBinary
                                  op_id: BoolBinary_GlobDEqual
                                  left: {(DQ ($ VSub_Name "$cur"))}
                                  right: {(DQ (-))}
                                )
                            )
                          terminator: <Op_Semi ";">
                        )
                      ]
                      action: [
                        (Assignment
                          keyword: Assign_None
                          pairs: [
                            (assign_pair
                              lhs: (LhsName name:COMPREPLY)
                              op: Equal
                              rhs: {(ArrayLiteralPart words:[{(-)}])}
                              spids: [57]
                            )
                          ]
                          spids: [57]
                        )
                      ]
                      spids: [-1 54]
                    )
                  ]
                  else_action: [(C {(_allowed_groups)} {(DQ ($ VSub_Name "$cur"))})]
                  spids: [65 75]
                )
              ]
              spids: [15]
            )
          spids: [11 14]
        )
        (C {(complete)} {(-F)} {(_newgrp)} {(newgrp)})
      ]
      op_id: Op_DAmp
    )
  ]
)