Show level annotation on level entry

Idea by Chris Smith, via Unnethack

src/do.c

@@ -1069,6 +1069,7 @@ boolean at_stairs, falling, portal;
     boolean new = FALSE;	/* made a new level? */
     struct monst *mtmp;
     char whynot[BUFSZ];
+    char *annotation;
 
     if (dunlev(newlevel) > dunlevs_in_dungeon(newlevel))
         newlevel->dlevel = dunlevs_in_dungeon(newlevel);
@@ -1458,6 +1459,9 @@ boolean at_stairs, falling, portal;
     save_currentstate();
 #endif
 
+    if ((annotation = get_annotation(&u.uz)))
+	You("remember this level as %s.", annotation);
+
     /* assume this will always return TRUE when changing level */
     (void) in_out_region(u.ux, u.uy);
     (void) pickup(1);

src/dungeon.c

@@ -1848,6 +1848,16 @@ d_level *dest;
     }
 }
 
+char *
+get_annotation(lev)
+d_level *lev;
+{
+    mapseen *mptr;
+    if ((mptr = find_mapseen(lev)))
+	return mptr->custom;
+    return NULL;
+}
+
 /* #annotate command - add a custom name to the current level */
 int
 donamelevel()