(command.AndOr
  children: [
    (command.ShFunction
      name_tok: <_interdiff>
      name: _interdiff
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <local>
              more_env: []
              words: [{<local>} {<cur>} {<prev>} {<words>} {<cword>} {<split>}]
              redirects: []
              do_fork: T
            )
            (command.AndOr
              children: [
                (command.Simple
                  blame_tok: <_init_completion>
                  more_env: []
                  words: [{<_init_completion>} {<-s>}]
                  redirects: []
                  do_fork: T
                )
                (command.ControlFlow keyword:<Id.ControlFlow_Return return>)
              ]
              ops: [<Id.Op_DPipe _>]
            )
            (command.Case
              case_kw: <Id.KW_Case case>
              to_match: (case_arg.Word w:{($ Id.VSub_DollarName prev)})
              arms_start: <Id.KW_In in>
              arms: [
                (CaseArm
                  left: <-U>
                  pattern: 
                    (pat.Words
                      words: [{<-U>} {<--unified>} {<-p>} {<--strip-match>} {<-d>} {<--drop-context>}]
                    )
                  middle: <Id.Right_CasePat _>
                  action: [(command.ControlFlow keyword:<Id.ControlFlow_Return return>)]
                  right: <Id.Op_DSemi _>
                )
              ]
              arms_end: <Id.KW_Esac esac>
              redirects: []
            )
            (command.AndOr
              children: [
                (command.Simple
                  blame_tok: <Id.VSub_DollarName '$split'>
                  more_env: []
                  words: [{($ Id.VSub_DollarName split)}]
                  redirects: []
                  do_fork: T
                )
                (command.ControlFlow keyword:<Id.ControlFlow_Return return>)
              ]
              ops: [<Id.Op_DAmp _>]
            )
            (command.If
              if_kw: <Id.KW_If if>
              arms: [
                (IfArm
                  keyword: <Id.KW_If if>
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.DBracket
                              left: <Id.KW_DLeftBracket '[['>
                              expr: 
                                (bool_expr.Binary
                                  op_id: Id.BoolBinary_GlobDEqual
                                  left: {($ Id.VSub_DollarName cur)}
                                  right: {<-> <Id.Lit_Other '*'>}
                                )
                              right: <Id.Lit_DRightBracket ']]'>
                              redirects: []
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  then_kw: <Id.KW_Then then>
                  action: [
                    (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 '$('>
                                      child: 
                                        (command.Simple
                                          blame_tok: <compgen>
                                          more_env: []
                                          words: [
                                            {<compgen>}
                                            {<-W>}
                                            {(SQ <'$( _parse_help "$1" )'>)}
                                            {<-->}
                                            {(DQ ($ Id.VSub_DollarName cur))}
                                          ]
                                          redirects: []
                                          do_fork: T
                                        )
                                      right: <Id.Eof_RParen _>
                                    )
                                  }
                                ]
                                right: <Id.Right_ShArrayLiteral _>
                              )
                            }
                        )
                      ]
                      redirects: []
                    )
                    (command.AndOr
                      children: [
                        (command.DBracket
                          left: <Id.KW_DLeftBracket '[['>
                          expr: 
                            (bool_expr.Binary
                              op_id: Id.BoolBinary_GlobDEqual
                              left: {($ Id.VSub_DollarName COMPREPLY)}
                              right: {<Id.Lit_Other '*'> <Id.BoolBinary_GlobEqual '='>}
                            )
                          right: <Id.Lit_DRightBracket ']]'>
                          redirects: []
                        )
                        (command.Simple
                          blame_tok: <compopt>
                          more_env: []
                          words: [{<compopt>} {<-o>} {<nospace>}]
                          redirects: []
                          do_fork: T
                        )
                      ]
                      ops: [<Id.Op_DAmp _>]
                    )
                    (command.ControlFlow keyword:<Id.ControlFlow_Return return>)
                  ]
                  spids: [73 87]
                )
              ]
              else_action: []
              fi_kw: <Id.KW_Fi fi>
              redirects: []
            )
            (command.Simple
              blame_tok: <local>
              more_env: []
              words: [{<local>} {<Id.Lit_VarLike 'exts='> (SQ <'@(?(d)patch|dif?(f))'>)} {<word>}]
              redirects: []
              do_fork: T
            )
            (command.ForEach
              keyword: <Id.KW_For for>
              iter_names: [word]
              iterable: 
                (for_iter.Words
                  words: [
                    {
                      (BracedVarSub
                        left: <Id.Left_DollarBrace '${'>
                        token: <Id.VSub_Name words>
                        var_name: words
                        bracket_op: (bracket_op.WholeArray op_id:Id.Lit_At)
                        right: <Id.Right_DollarBrace '}'>
                      )
                    }
                  ]
                )
              semi_tok: <Id.Op_Semi _>
              body: 
                (command.DoGroup
                  left: <Id.KW_Do do>
                  children: [
                    (command.If
                      if_kw: <Id.KW_If if>
                      arms: [
                        (IfArm
                          keyword: <Id.KW_If if>
                          cond: 
                            (condition.Shell
                              commands: [
                                (command.Sentence
                                  child: 
                                    (command.DBracket
                                      left: <Id.KW_DLeftBracket '[['>
                                      expr: 
                                        (bool_expr.Binary
                                          op_id: Id.BoolBinary_GlobDEqual
                                          left: {($ Id.VSub_DollarName word)}
                                          right: 
                                            {<-> 
                                              (word_part.ExtGlob
                                                op: <Id.ExtGlob_At '@('>
                                                arms: [{<z>} {<-decompress>}]
                                                right: <Id.Right_ExtGlob _>
                                              )
                                            }
                                        )
                                      right: <Id.Lit_DRightBracket ']]'>
                                      redirects: []
                                    )
                                  terminator: <Id.Op_Semi _>
                                )
                              ]
                            )
                          then_kw: <Id.KW_Then then>
                          action: [
                            (command.ShAssignment
                              left: <Id.Lit_VarLike 'exts+='>
                              pairs: [
                                (AssignPair
                                  left: <Id.Lit_VarLike 'exts+='>
                                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'exts+='> name:exts)
                                  op: assign_op.PlusEqual
                                  rhs: {(SQ <'?(.@(gz|bz2))'>)}
                                )
                              ]
                              redirects: []
                            )
                            (command.ControlFlow
                              keyword: <Id.ControlFlow_Break break>
                            )
                          ]
                          spids: [168 186]
                        )
                      ]
                      else_action: []
                      fi_kw: <Id.KW_Fi fi>
                      redirects: []
                    )
                  ]
                  right: <Id.KW_Done done>
                )
              redirects: []
            )
            (command.Simple
              blame_tok: <_filedir>
              more_env: []
              words: [{<_filedir>} {(DQ ($ Id.VSub_DollarName exts))}]
              redirects: []
              do_fork: T
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.Simple
      blame_tok: <complete>
      more_env: []
      words: [{<complete>} {<-F>} {<_interdiff>} {<interdiff>}]
      redirects: []
      do_fork: T
    )
  ]
  ops: [<Id.Op_DAmp _>]
)