/// the first group is always the entire pattern.
///
/// This returns true on a successful match.
bool match(StringRef String, SmallVectorImpl<StringRef> *Matches = 0);
/// sub - Return the result of replacing the first match of the regex in
/// the first group is always the entire pattern.
///
/// This returns true on a successful match.
bool match(StringRef String, SmallVectorImpl<StringRef> *Matches = 0);
/// sub - Return the result of replacing the first match of the regex in