concat_opt_anc_info 4226 regcomp.c        concat_opt_anc_info(&tanc, &to->anc, &add->anc, 1, 1);
concat_opt_anc_info 4470 regcomp.c        concat_opt_anc_info(&tanc, &to->anc, &add->anc, to->len.max, add->len.max);
concat_opt_anc_info 4474 regcomp.c          concat_opt_anc_info(&tanc, &to->anc, &add->exb.anc,