I think bittster was right: holes in the chrysalis aren’t good. I have given up hope that this one will emerge.
The chrysalis is getting more and more brittle, and I can see through a small slit that there is something inside, but it doesn’t look like it’s alive.
All the close-up, watchful examination of the site did reveal a successful one nearby, though. At first I thought it might be a dragonfly exuviae (Scrabble word!), based on the ribbed appearance of the end near the stem, but I think it’s just a bit too far away from the pond for this to be likely. It has the thin threads attaching it to the stem, typical of a chrysalis. Also, it seems that exuviae generally survive more intact than this; if it was an exuviae, it has taken quite a beating.
At any rate, it’s good to know that one of them made it. Wish I could have been there to see it, but maybe next time.