(command.AndOr
  ops: [Id.Op_DAmp]
  children: [
    (command.ShFunction
      name: _interdiff
      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: (Token id:Id.ControlFlow_Return val:return span_id:30)
                )
              ]
            )
            (command.Case
              to_match: {($ Id.VSub_DollarName '$prev')}
              arms: [
                (case_arm
                  pat_list: [{(-U)} {(--unified)} {(-p)} {(--strip-match)} {(-d)} {(--drop-context)}]
                  action: [
                    (command.ControlFlow
                      token: (Token id:Id.ControlFlow_Return val:return span_id:55)
                    )
                  ]
                  spids: [41 52 58 -1]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (C {($ Id.VSub_DollarName '$split')})
                (command.ControlFlow
                  token: (Token id:Id.ControlFlow_Return val:return span_id:69)
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.Binary
                              op_id: Id.BoolBinary_GlobDEqual
                              left: {($ Id.VSub_DollarName '$cur')}
                              right: {(-) (Id.Lit_Other '*')}
                            )
                        )
                      terminator: (Token id:Id.Op_Semi val:';' span_id:85)
                    )
                  ]
                  action: [
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:COMPREPLY)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (sh_array_literal
                                left: (Token id:Id.Op_LParen val:'(' span_id:91)
                                words: [
                                  {
                                    (command_sub
                                      left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:93)
                                      command_list: 
                                        (command.CommandList
                                          children: [
                                            (C {(compgen)} {(-W)} 
                                              {
                                                (SQ 
                                                  (Token
                                                    id: Id.Lit_Chars
                                                    val: '$( _parse_help "$1" )'
                                                    span_id: 100
                                                  )
                                                )
                                              } {(--)} {(DQ ($ Id.VSub_DollarName '$cur'))}
                                            )
                                          ]
                                        )
                                    )
                                  }
                                ]
                              )
                            }
                          spids: [90]
                        )
                      ]
                    )
                    (command.AndOr
                      ops: [Id.Op_DAmp]
                      children: [
                        (command.DBracket
                          expr: 
                            (bool_expr.Binary
                              op_id: Id.BoolBinary_GlobDEqual
                              left: {($ Id.VSub_DollarName '$COMPREPLY')}
                              right: {(Id.Lit_Other '*') (Id.BoolBinary_GlobEqual '=')}
                            )
                        )
                        (C {(compopt)} {(-o)} {(nospace)})
                      ]
                    )
                    (command.ControlFlow
                      token: (Token id:Id.ControlFlow_Return val:return span_id:134)
                    )
                  ]
                  spids: [73 87]
                )
              ]
            )
            (C {(local)} 
              {(Id.Lit_VarLike 'exts=') 
                (SQ (Token id:Id.Lit_Chars val:'@(?(d)patch|dif?(f))' span_id:145))
              } {(word)}
            )
            (command.ForEach
              iter_name: word
              iter_words: [
                {
                  (braced_var_sub
                    token: (Token id:Id.VSub_Name val:words span_id:158)
                    bracket_op: (bracket_op.WholeArray op_id:Id.Lit_At)
                  )
                }
              ]
              do_arg_iter: F
              body: 
                (command.DoGroup
                  children: [
                    (command.If
                      arms: [
                        (if_arm
                          cond: [
                            (command.Sentence
                              child: 
                                (command.DBracket
                                  expr: 
                                    (bool_expr.Binary
                                      op_id: Id.BoolBinary_GlobDEqual
                                      left: {($ Id.VSub_DollarName '$word')}
                                      right: 
                                        {(-) 
                                          (word_part.ExtGlob
                                            op: (Token id:Id.ExtGlob_At val:'@(' span_id:177)
                                            arms: [{(z)} {(-decompress)}]
                                          )
                                        }
                                    )
                                )
                              terminator: (Token id:Id.Op_Semi val:';' span_id:184)
                            )
                          ]
                          action: [
                            (command.ShAssignment
                              pairs: [
                                (assign_pair
                                  lhs: (sh_lhs_expr.Name name:exts)
                                  op: assign_op.PlusEqual
                                  rhs: {(SQ (Token id:Id.Lit_Chars val:'?(.@(gz|bz2))' span_id:191))}
                                  spids: [189]
                                )
                              ]
                            )
                            (command.ControlFlow
                              token: (Token id:Id.ControlFlow_Break val:break span_id:195)
                            )
                          ]
                          spids: [168 186]
                        )
                      ]
                    )
                  ]
                )
            )
            (C {(_filedir)} {(DQ ($ Id.VSub_DollarName '$exts'))})
          ]
        )
    )
    (C {(complete)} {(-F)} {(_interdiff)} {(interdiff)})
  ]
)