overriding message suppression, revisited

This is more robust than the previous hack.  The issue of whether to
use it in other places is still unexplored.  Ultimately it's the user's
fault if overzealous message suppression hides something important.
[For an eerie game, try 'MSGTYPE=hide .'.]

src/invent.c

@@ -2830,8 +2830,16 @@ boolean picked_some;
 int
 dolook()
 {
-    iflags.last_msg = PLNMSG_NOREP_OVERRIDE;
-    return look_here(0, FALSE);
+    int res;
+
+    /* don't let
+       MSGTYPE={norep,noshow} "You see here"
+       interfere with feedback from the look-here command */
+    hide_unhide_msgtypes(TRUE, MSGTYP_MASK_REP_SHOW);
+    res = look_here(0, FALSE);
+    /* restore normal msgtype handling */
+    hide_unhide_msgtypes(FALSE, MSGTYP_MASK_REP_SHOW);
+    return res;
 }
 
 boolean