_advance
ret = _advance(p1, p2);
if (_advance(p1, p2)) {
if (_advance(p1, p2)) {
if (_advance(p1, p2)) {
ret = _advance(lp, ++ep);
if (_advance(lp, ep))
if (_advance(lp, ep))
if (_advance(lp, ep))
if (_advance(lp, ep))
static int _advance(char *, char *);