Refs #11769.  Make _isEmpty aware of this.trim.
Refs #11769.  Make _isEmpty aware of this.trim.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@22911 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful