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                                              {
                                                (SQ 
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                            (bool_expr.Binary
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                (single_quoted
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            (command.AndOr
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              children: [
                (command.DBracket
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                    (bool_expr.Binary
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                        )
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                  action: [
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                      children: [
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                              left: {(DQ ($ Id.VSub_DollarName '$prev'))}
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                      children: [
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                              left: {(DQ ($ Id.VSub_DollarName '$prev'))}
                              right: {(--force)}
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