(command.AndOr
  children: [
    (command.ShFunction
      name_tok: <_bk>
      name: _bk
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <local>
              more_env: []
              words: [{<local>} {<cur>} {<prev>} {<words>} {<cword>}]
              redirects: []
              do_fork: T
            )
            (command.AndOr
              children: [
                (command.Simple
                  blame_tok: <_init_completion>
                  more_env: []
                  words: [{<_init_completion>}]
                  redirects: []
                  do_fork: T
                )
                (command.ControlFlow keyword:<Id.ControlFlow_Return return>)
              ]
              ops: [<Id.Op_DPipe _>]
            )
            (command.Simple
              blame_tok: <local>
              more_env: []
              words: [
                {<local>}
                {<Id.Lit_VarLike 'BKCMDS='> 
                  (DQ 
                    (CommandSub
                      left_token: <Id.Left_DollarParen '$('>
                      child: 
                        (command.Pipeline
                          children: [
                            (command.Simple
                              blame_tok: <bk>
                              more_env: []
                              words: [{<bk>} {<help>} {<topics>}]
                              redirects: [
                                (Redir
                                  op: <Id.Redir_Great '2>'>
                                  loc: (redir_loc.Fd fd:2)
                                  arg: {<'/dev/null'>}
                                )
                              ]
                              do_fork: T
                            )
                            (command.Simple
                              blame_tok: <awk>
                              more_env: []
                              words: [{<awk>} {(SQ <'/^  bk/ { print $4 }'>)}]
                              redirects: []
                              do_fork: T
                            )
                            (command.Simple
                              blame_tok: <xargs>
                              more_env: []
                              words: [{<xargs>} {<printf>} {(SQ <'%s '>)}]
                              redirects: []
                              do_fork: T
                            )
                          ]
                          ops: [<Id.Op_Pipe _> <Id.Op_Pipe _>]
                        )
                      right: <Id.Eof_RParen _>
                    )
                  )
                }
              ]
              redirects: []
              do_fork: T
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'COMPREPLY='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'COMPREPLY='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'COMPREPLY='> name:COMPREPLY)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (ShArrayLiteral
                        left: <Id.Op_LParen _>
                        words: [
                          {
                            (CommandSub
                              left_token: <Id.Left_DollarParen '$('>
                              child: 
                                (command.Simple
                                  blame_tok: <compgen>
                                  more_env: []
                                  words: [
                                    {<compgen>}
                                    {<-W>}
                                    {(DQ ($ Id.VSub_DollarName BKCMDS))}
                                    {<-->}
                                    {(DQ ($ Id.VSub_DollarName cur))}
                                  ]
                                  redirects: []
                                  do_fork: T
                                )
                              right: <Id.Eof_RParen _>
                            )
                          }
                        ]
                        right: <Id.Right_ShArrayLiteral _>
                      )
                    }
                )
              ]
              redirects: []
            )
            (command.Simple
              blame_tok: <_filedir>
              more_env: []
              words: [{<_filedir>}]
              redirects: []
              do_fork: T
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Return return> arg_word:{<0>})
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.Simple
      blame_tok: <complete>
      more_env: []
      words: [{<complete>} {<-F>} {<_bk>} {<bk>}]
      redirects: []
      do_fork: T
    )
  ]
  ops: [<Id.Op_DAmp _>]
)