NSTRING_LEN      2513 regcomp.c            if (NSTRING_LEN(x) == 0)
NSTRING_LEN      2545 regcomp.c      	  len = NSTRING_LEN(x);
NSTRING_LEN      2546 regcomp.c      	  if (len > NSTRING_LEN(y)) len = NSTRING_LEN(y);
NSTRING_LEN      3768 regcomp.c      	  int len = NSTRING_LEN(target);