Generated Diagrams mess up hyphens in titles

[wolfsage]

In Chapter 2, Figure 28 for example, you have:

[[code type="textdiagram"]]
            +-------------+
  Frame 1   | Key         |     Subscription key
            +-------------+
  Frame 2   | Identity    |     Address of publisher
            +-------------+
  Frame 3   | Data        |     Actual message body
            +-------------+

    Figure # - Pub-sub envelope with sender address
[[/code]]

And in the image generated from it: https://github.com/imatix/zguide/raw/master/images/fig28.png, the hyphen over-writes the 'pub' in 'pub-sub'.

Matthew Horsfall (alh) http://dyn.com

[hintjens]

This is a known issue with Ditaa.