(command.AndOr
  ops: [Id.Op_DAmp]
  children: [
    (command.ShFunction
      name: _bk
      body: 
        (command.BraceGroup
          children: [
            (C {(local)} {(cur)} {(prev)} {(words)} {(cword)})
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (C {(_init_completion)})
                (command.ControlFlow
                  token: (Token id:Id.ControlFlow_Return val:return span_id:29)
                )
              ]
            )
            (C {(local)} 
              {(Id.Lit_VarLike 'BKCMDS=') 
                (DQ 
                  (command_sub
                    left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:37)
                    command_list: 
                      (command.CommandList
                        children: [
                          (command.Pipeline
                            children: [
                              (command.Simple
                                words: [{(bk)} {(help)} {(topics)}]
                                redirects: [
                                  (redir.Redir
                                    op: (Token id:Id.Redir_Great val:'2>' span_id:45)
                                    fd: 2
                                    arg_word: {(/dev/null)}
                                  )
                                ]
                              )
                              (C {(awk)} 
                                {(SQ (Token id:Id.Lit_Chars val:'/^  bk/ { print $4 }' span_id:55))}
                              )
                              (C {(xargs)} {(printf)} {(SQ (Token id:Id.Lit_Chars val:'%s ' span_id:65))})
                            ]
                            negated: F
                          )
                        ]
                      )
                  )
                )
              }
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:COMPREPLY)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (sh_array_literal
                        left: (Token id:Id.Op_LParen val:'(' span_id:74)
                        words: [
                          {
                            (command_sub
                              left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:76)
                              command_list: 
                                (command.CommandList
                                  children: [
                                    (C {(compgen)} {(-W)} {(DQ ($ Id.VSub_DollarName '$BKCMDS'))} {(--)} 
                                      {(DQ ($ Id.VSub_DollarName '$cur'))}
                                    )
                                  ]
                                )
                            )
                          }
                        ]
                      )
                    }
                  spids: [73]
                )
              ]
            )
            (C {(_filedir)})
            (command.ControlFlow
              token: (Token id:Id.ControlFlow_Return val:return span_id:101)
              arg_word: {(0)}
            )
          ]
        )
    )
    (C {(complete)} {(-F)} {(_bk)} {(bk)})
  ]
)