(command.AndOr
  ops: [Id.Op_DAmp]
  children: [
    (command.ShFunction
      name: _chgrp
      body: 
        (command.BraceGroup
          children: [
            (C {<local>} {<cur>} {<prev>} {<words>} {<cword>} {<split>})
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (C {<_init_completion>} {<-s>})
                (command.ControlFlow token:<Id.ControlFlow_Return return>)
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:cur)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (braced_var_sub
                        token: <Id.VSub_Name cur>
                        suffix_op: 
                          (suffix_op.PatSub
                            pat: 
                              {(word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\\\'>) 
                                (word_part.EscapedLiteral
                                  token: <Id.Lit_EscapedChar '\\\\'>
                                )
                              }
                            replace: {}
                            replace_mode: Id.Lit_Slash
                          )
                      )
                    }
                  spids: [34]
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.Binary
                              op_id: Id.BoolBinary_GlobDEqual
                              left: {(DQ ($ Id.VSub_DollarName '$prev'))}
                              right: {<--reference>}
                            )
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [
                    (C {<_filedir>})
                    (command.ControlFlow
                      token: <Id.ControlFlow_Return return>
                      arg_word: {<0>}
                    )
                  ]
                  spids: [46 61]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (C {($ Id.VSub_DollarName '$split')})
                (command.ControlFlow
                  token: <Id.ControlFlow_Return return>
                  arg_word: {<0>}
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.Binary
                              op_id: Id.BoolBinary_GlobDEqual
                              left: {(DQ ($ Id.VSub_DollarName '$cur'))}
                              right: {<-> <Id.Lit_Other '*'>}
                            )
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [
                    (C {<local>} {<w>} {<opts>})
                    (command.ForEach
                      iter_name: w
                      iter_words: [
                        {
                          (DQ 
                            (braced_var_sub
                              token: <Id.VSub_Name words>
                              bracket_op: (bracket_op.WholeArray op_id:Id.Lit_At)
                            )
                          )
                        }
                      ]
                      do_arg_iter: F
                      body: 
                        (command.DoGroup
                          children: [
                            (command.AndOr
                              ops: [Id.Op_DAmp Id.Op_DAmp]
                              children: [
                                (command.DBracket
                                  expr: 
                                    (bool_expr.Binary
                                      op_id: Id.BoolBinary_GlobDEqual
                                      left: {(DQ ($ Id.VSub_DollarName '$w'))}
                                      right: 
                                        {<-> 
                                          (word_part.ExtGlob
                                            op: <Id.ExtGlob_At '@('>
                                            arms: [{<R>} {<-recursive>}]
                                          )
                                        }
                                    )
                                )
                                (command.ShAssignment
                                  pairs: [
                                    (assign_pair
                                      lhs: (sh_lhs_expr.Name name:opts)
                                      op: assign_op.Equal
                                      rhs: {(DQ <'-H -L -P'>)}
                                      spids: [155]
                                    )
                                  ]
                                )
                                (command.ControlFlow
                                  token: <Id.ControlFlow_Break break>
                                )
                              ]
                            )
                          ]
                        )
                    )
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:COMPREPLY)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (sh_array_literal
                                left: <Id.Op_LParen _>
                                words: [
                                  {
                                    (command_sub
                                      left_token: <Id.Left_DollarParen '$('>
                                      command_list: 
                                        (command.CommandList
                                          children: [
                                            (C {<compgen>} {<-W>} 
                                              {
                                                (SQ <'-c -h -f -R -v --changes --dereference\n'> 
                                                  <
'            --no-dereference --silent --quiet --reference --recursive --verbose\n'
                                                  > <'            --help --version $opts'>
                                                )
                                              } {<-->} {(DQ ($ Id.VSub_DollarName '$cur'))}
                                            )
                                          ]
                                        )
                                    )
                                  }
                                ]
                              )
                            }
                          spids: [168]
                        )
                      ]
                    )
                    (command.ControlFlow
                      token: <Id.ControlFlow_Return return>
                      arg_word: {<0>}
                    )
                  ]
                  spids: [90 106]
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.LogicalOr
                              left: 
                                (bool_expr.LogicalAnd
                                  left: 
                                    (bool_expr.Binary
                                      op_id: Id.BoolBinary_eq
                                      left: {($ Id.VSub_DollarName '$cword')}
                                      right: {<1>}
                                    )
                                  right: 
                                    (bool_expr.Binary
                                      op_id: Id.BoolBinary_GlobNEqual
                                      left: {(DQ ($ Id.VSub_DollarName '$cur'))}
                                      right: {<-> <Id.Lit_Other '*'>}
                                    )
                                )
                              right: 
                                (bool_expr.Binary
                                  op_id: Id.BoolBinary_GlobDEqual
                                  left: {(DQ ($ Id.VSub_DollarName '$prev'))}
                                  right: {<-> <Id.Lit_Other '*'>}
                                )
                            )
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [(C {<_allowed_groups>} {(DQ ($ Id.VSub_DollarName '$cur'))})]
                  spids: [207 242]
                )
              ]
              else_action: [
                (command.AndOr
                  ops: [Id.Op_DPipe]
                  children: [
                    (C {<_filedir>})
                    (command.ControlFlow
                      token: <Id.ControlFlow_Return return>
                      arg_word: {<0>}
                    )
                  ]
                )
              ]
            )
            (command.ControlFlow token:<Id.ControlFlow_Return return> arg_word:{<0>})
          ]
        )
    )
    (C {<complete>} {<-F>} {<_chgrp>} {<chgrp>})
  ]
)