For a wee while now I've been trying to nail down a weirdness with the navigation history in Rogallo. I never felt it was a difficult issue to deal with, but it was also one of those issues that I could never obviously recreate at will, and it only seemed to happen while I was busy working on something else.

Yesterday evening I finally managed to come up with a way to always recreate it and, having done so, the solution seems pretty straightforward1. In order to implement the tweak I want, I need to be able to truncate the navigation history, and of course do so in a non-destructive way.

So the history classes in BagOfStuff v1.3.0 have grown clone and truncate methods. This will allow me to duplicate a history, truncate it at its current location, then save it, without affecting the working copy.

  1. Why do I feel like I'll regret saying that? ↩