if (mutt_is_list_recipient (e->to) || mutt_is_list_recipient (e->cc))
if (mutt_is_list_recipient (0, e->to, e->cc))
void mutt_set_followup_to (ENVELOPE *e){  ADDRESS *t = NULL;  /* only generate the Mail-Followup-To if the user has requested it, and     it hasn't already been set */  if (option (OPTFOLLOWUPTO) && !e->mail_followup_to)  {    if (mutt_is_list_recipient (e->to) || mutt_is_list_recipient (e->cc))    {      /* i am a list recipient, so set the Mail-Followup-To: field so that       * i don't end up getting multiple copies of responses to my mail       */      t = rfc822_append (&e->mail_followup_to, e->to);      rfc822_append (&t, e->cc);      /* the following is needed if $metoo is set, because the ->to and ->cc	 may contain the user's private address(es) */      e->mail_followup_to = remove_user (e->mail_followup_to, 0);    }  }}