Method removeEmojiVariations

visage_utils/string_utils.cpp:113–118

  }

  String String::removeEmojiVariations() const {
    std::u32string result = string_;
    auto filter = [](char32_t c) { return (c & 0xfffffff0) == 0xfe00; };
    result.erase(std::remove_if(result.begin(), result.end(), filter), result.end());
    return result;
  }

  int String::naturalCompare(const std::u32string& a, const std::u32string& b) {
    size_t i = 0;