Function IsAsciiPunct

tests/gtest/gtest-all.cc:10481–10483

// current locale.
bool IsAsciiDigit(char ch) { return '0' <= ch && ch <= '9'; }
bool IsAsciiPunct(char ch) {
  return IsInSet(ch, "^-!\"#$%&'()*+,./:;<=>?@[\\]_`{|}~");
}
bool IsRepeat(char ch) { return IsInSet(ch, "?*+"); }
bool IsAsciiWhiteSpace(char ch) { return IsInSet(ch, " \f\n\r\t\v"); }
bool IsAsciiWordChar(char ch) {