Method is_control

Fleece/Support/diff_match_patch.hh:2398–2398

  static ssize_t to_int(const string_t& str) { return traits::to_int(str.c_str()); }

  static bool is_control(char_t c) { switch (traits::to_wchar(c)) { case L'\n': case L'\r': return true; } return false; }

  static typename string_t::size_type next_token(const string_t& str, char_t delim, typename string_t::const_pointer off) {
    typename string_t::const_pointer p = off, end = str.c_str() + str.length();