Method extract

source/core/StarString.cpp:369–380

}

String String::extract(String const& chars) {
  StringList l = splitAny(chars, 1);
  if (l.size() == 0) {
    return String();
  } else if (l.size() == 1) {
    clear();
    return l.at(0);
  } else {
    *this = l.at(1);
    return l.at(0);
  }
}

String String::rextract(String const& chars) {
  if (empty())