RXP_LINE_SZ
if (rp - rxpbuf >= RXP_LINE_SZ - 4) {
while (rp < rxpbuf + RXP_LINE_SZ && *rp != END)
static char buf[RXP_LINE_SZ/2];
while (rp < rxpbuf + RXP_LINE_SZ && *rp != END)
static Rxp_t rxpbuf[RXP_LINE_SZ]; /* compiled regular expression buffer */