REG_NOERROR      2168 regex.cpp                          if (ret != REG_NOERROR) FREE_STACK_RETURN (ret);
REG_NOERROR      2179 regex.cpp                          if (ret != REG_NOERROR) FREE_STACK_RETURN (ret);
REG_NOERROR      2901 regex.cpp        return REG_NOERROR;
REG_NOERROR      3053 regex.cpp          return syntax & RE_NO_EMPTY_RANGES ? REG_ERANGE : REG_NOERROR;
REG_NOERROR      3064 regex.cpp        return REG_NOERROR;
REG_NOERROR      5624 regex.cpp        return ret >= 0 ? (int) REG_NOERROR : (int) REG_NOMATCH;