t_rprntc
ltc_temp.t_rprntc = ltc_temp.t_flushc = -1;
*valp = termbuf.ltc.t_rprntc;
*valpp = (cc_t *)&termbuf.ltc.t_rprntc;
# define termRprntChar nltc.t_rprntc
# define termRprntCharp (cc_t *)&nltc.t_rprntc
wwnewtty.ww_ltchars.t_rprntc = -1;