message: [autocomplete] Don't try to autocomplete triplets to --options
diff: @@ -134,7 +134,8 @@ namespace vcpkg::Commands::Autocomplete
  const auto prefix = match[2].str();
  std::vector<std::string> results;
  - if (Strings::case_insensitive_ascii_starts_with(prefix, "-"))
  + const bool is_option = Strings::case_insensitive_ascii_starts_with(prefix, "-");
  + if (is_option)
  {
  results = Util::fmap(command.structure.switches, [](auto&& s) -> std::string { return s; });
  }
  @@ -147,7 +148,7 @@ namespace vcpkg::Commands::Autocomplete
  return Strings::case_insensitive_ascii_starts_with(s, prefix);
  });
  - if (command.name == "install" && results.size() == 1)
  + if (command.name == "install" && results.size() == 1 && !is_option)
  {
  const auto port_at_each_triplet =
  combine_port_with_triplets(results[0], paths.get_available_triplets());
  