Problem saving nested collections

Hi,

I have a large collection of histograms that I want to keep organized. For this purpose, I tried using nested collections, with the histograms being several layers deep. (It should be a convenient way to keep 1D histograms organized in bins of multiple variables that aren't directly plotted.)

Unfortunately, when I try to save these collections to a file, only the top layer is actually saved.

I have attached a simple macro that reproduces the problem.

• Corey
  • text/x-c++src attachment: tst.C