long strings seem to only display ""

[FoxyBrown via Digitalmars-d-debugger]

Was having a strange debug issue until I checked the visualizer 
on the string and realized it was just a long string ;/

mago is showing long strings as "" making one think they are 
empty.

instead, the first n chars should be shown with an ellipse is

e.g.,

"This is a very long str"...