text: #include <sstream>
  
  #include <seqan3/core/debug_stream.hpp>
  #include <seqan3/io/structure_file/input.hpp>
  #include <seqan3/range/views/to_char.hpp>
  #include <seqan3/std/ranges>
  
  auto input = R"(> S.cerevisiae_tRNA-PHE M10740/1-73
  GCGGAUUUAGCUCAGUUGGGAGAGCGCCAGACUGAAGAUUUGGAGGUCCUGUGUUCGAUCCACAGAAUUCGCA
  (((((((..((((........)))).((((.........)))).....(((((.......)))))))))))). (-17.50)
  > example
  UUGGAGUACACAACCUGUACACUCUUUC
  ..(((((..(((...)))..)))))... (-3.71))";
  
  int main()
  {
      using seqan3::get;
  
      seqan3::structure_file_input fin{std::istringstream{input}, seqan3::format_vienna{}};
  
  #if !SEQAN3_WORKAROUND_GCC_93983
      auto minimum_length5_filter = std::views::filter([] (auto const & rec)
      {
          return std::ranges::size(get<seqan3::field::seq>(rec)) >= 5;
      });
  #endif // !SEQAN3_WORKAROUND_GCC_93983
  
  #if SEQAN3_WORKAROUND_GCC_93983
      for (auto & rec : fin /*| minimum_length5_filter*/) // only record with sequence length >= 5 will "appear"
  #else // ^^^ workaround / no workaround vvv
      for (auto & rec : fin | minimum_length5_filter) // only record with sequence length >= 5 will "appear"
  #endif // SEQAN3_WORKAROUND_GCC_93983
          seqan3::debug_stream << (get<0>(rec) | seqan3::views::to_char) << '\n';
  }
  