patch 7.4.793
Problem:    Can't specify when not to ring the bell.
Solution:   Add the 'belloff' option. (Christian Brabandt)
diff --git a/src/ex_getln.c b/src/ex_getln.c
index 610ac86..d7700c8 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -900,7 +900,7 @@
 							       firstc != '@');
 		    }
 		    else
-			vim_beep();
+			vim_beep(BO_WILD);
 		}
 #ifdef FEAT_WILDMENU
 		else if (xpc.xp_numfiles == -1)
@@ -3710,7 +3710,7 @@
 	    if (i < xp->xp_numfiles)
 	    {
 		if (!(options & WILD_NO_BEEP))
-		    vim_beep();
+		    vim_beep(BO_WILD);
 		break;
 	    }
 	}