consconfig_relink_wc
err = consconfig_relink_wc(sp, NULL, &sp->conskbd_muxid);
err = consconfig_relink_wc(sp, sp->conskbd_lh, &sp->conskbd_muxid);
(void) consconfig_relink_wc(sp, sp->conskbd_lh, &sp->conskbd_muxid);
(void) consconfig_relink_wc(sp, NULL, &sp->conskbd_muxid);
(void) consconfig_relink_wc(sp, new_lh, &stdin_muxid);
(void) consconfig_relink_wc(sp, sp->conskbd_lh, &sp->conskbd_muxid);