kMatchSpecLenStart
len += kMatchSpecLenStart;
if (p->remainLen != 0 && p->remainLen < kMatchSpecLenStart)
while (p->dicPos < limit && p->buf < bufLimit && p->remainLen < kMatchSpecLenStart);
if (p->remainLen > kMatchSpecLenStart)
p->remainLen = kMatchSpecLenStart;
while (p->remainLen != kMatchSpecLenStart)