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                  pairs: [
                    (assign_pair lhs:(LhsName name:cur) op:Equal spids:[13])
                    (assign_pair lhs:(LhsName name:prev) op:Equal spids:[15])
                    (assign_pair lhs:(LhsName name:words) op:Equal spids:[17])
                    (assign_pair lhs:(LhsName name:cword) op:Equal spids:[19])
                    (assign_pair lhs:(LhsName name:split) op:Equal spids:[21])
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                    (C {(_init_completion)} {(-s)})
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                          terminator: <Op_Semi ';'>
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                      action: [
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                                                  {(--)} {(DQ ($ VSub_Name '$cur'))}
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                  do_arg_iter: False
                  body: 
                    (DoGroup
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                                        (BoolBinary
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                                          right: 
                                            {(-) (ExtGlobPart op:<ExtGlob_At '@('> spids:[177 181])}
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                                  terminator: <Op_Semi ';'>
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                              action: [
                                (Assignment
                                  keyword: Assign_None
                                  pairs: [
                                    (assign_pair
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                                      op: PlusEqual
                                      rhs: {(SQ <'?(.@(gz|bz2))'>)}
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                                  spids: [189]
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                                (ControlFlow
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                              spids: [16777215 186]
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                      spids: [165 201]
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                  spids: [156 163]
                )
                (C {(_filedir)} {(DQ ($ VSub_Name '$exts'))})
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              spids: [8]
            )
          spids: [4 7]
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        (C {(complete)} {(-F)} {(_interdiff)} {(interdiff)})
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      op_id: Op_DAmp
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)