REG_EESCAPE      2002 regex.cpp                          if (p == pend) FREE_STACK_RETURN (REG_EESCAPE);
REG_EESCAPE      2139 regex.cpp                          if (p == pend) FREE_STACK_RETURN (REG_EESCAPE);
REG_EESCAPE      2349 regex.cpp                if (p == pend) FREE_STACK_RETURN (REG_EESCAPE);