split_env
nlp->nlp_exl = split_env(envp, ',');
nlp->nlp_inc = split_env(envp, ' ');
static ENVELOPE *split_env __P((ENVELOPE *, ADDRESS *, int, int));
ee = split_env(e, addrs[i], addrs[i]->q_qgrp, NOQDIR);
ee = split_env(e, addrs[i], e->e_qgrp, e->e_qdir);