Comment 2 for bug 1082388

Thanks Thomi!

get_children_by_type() crashes, I reported this as bug 1091568. But select_single()/select_many() seem to work, which is by and large what I need anyway. So indeed this solves this bug.

Now I'm stuck with the fact that the really interesting properties don't seem to appear in "vis", but I'll examine this more closely.