Function ToLowerRuneLatin1

extern/re2/re2/prefilter.cc:188–192

}

static Rune ToLowerRuneLatin1(Rune r) {
  if ('A' <= r && r <= 'Z')
    r += 'a' - 'A';
  return r;
}

Prefilter* Prefilter::FromString(const std::string& str) {
  Prefilter* m = new Prefilter(Prefilter::ATOM);