hiding wizinvis actions in CircleMUD

Stock wizinvis 'look' doesn't echo, so I feel authorized on the basis of consistency to unecho wizinvis spells from the room they're cast.

In CircleMUD3.62, it's in spell_parser.c after line 115. Additions 1 and 2 are labeled.


111111111111111111111111111111111111111
1 while (GET_INVIS_LEV(ch) < LVL_IMPL) { 1
111111111111111111111111111111111111111
  if (tch != NULL && IN_ROOM(tch) == IN_ROOM(ch)) {
    if (tch == ch)
      format = "$n closes $s eyes and utters the words, '%s'.";
    else
      format = "$n stares at $N and utters the words, '%s'.";
  } else if (tobj != NULL &&
         ((IN_ROOM(tobj) == IN_ROOM(ch)) || (tobj->carried_by == ch)))
    format = "$n stares at $p and utters the words, '%s'.";
  else
    format = "$n utters the words, '%s'.";

  snprintf(buf1, sizeof(buf1), format, skill_name(spellnum));
  snprintf(buf2, sizeof(buf2), format, buf);

  for (i = world[IN_ROOM(ch)].people; i; i = i->next_in_room) {
    if (i == ch || i == tch || !i->desc || !AWAKE(i))
      continue;
    if (GET_CLASS(ch) == GET_CLASS(i))
      perform_act(buf1, ch, tobj, tch, i);
    else
      perform_act(buf2, ch, tobj, tch, i);
  }

  if (tch != NULL && tch != ch && IN_ROOM(tch) == IN_ROOM(ch)) {
    snprintf(buf1, sizeof(buf1), "$n stares at you and utters the words, '%s'.",
        GET_CLASS(ch) == GET_CLASS(tch) ? skill_name(spellnum) : buf);
    act(buf1, FALSE, ch, NULL, tch, TO_VICT);
  }
}
222
2}2
222

...without this modification, wizinvisibility is compromised when Implementors(!) cast spells. Neutralizing :wizinvis'ed spell caster's: spell hits as "A <spell> hits" rather than "Someone hits" or "an immortal hits" is technically out of my league at this time, though it stands to reason the highest level of wizinvisibility would leave no traces by default.

[EDIT] Edited by Nick to add code tags.