cmd/mbf: improve title format

This is cleaner for long-running daemon processes, and the additional information is more intuitive.

Signed-off-by: Ophestra <cat@gensokyo.uk>

cmd/mbf/cache.go

@@ -136,15 +136,19 @@ func (cache *cache) open() (err error) {
 			var n, nc uint64
 			for enter := range notify {
 				if enter {
-					n++
 					nc++
 				} else {
 					nc--
+					n++
 				}
 
+				if nc == 0 {
+					writeTitle(cache.msg, prefix[:len(prefix)-1])
+					continue
+				}
 				writeTitle(cache.msg, prefix+
 					"("+strconv.FormatUint(nc, 10)+
-					" of "+strconv.FormatUint(n, 10)+")")
+					" running, "+strconv.FormatUint(n, 10)+" complete)")
 			}
 		}()
 	}