On my list, but lower priority then many things. I know it’s important if you need it, but for my own use many other things are more important.
It’s unlikely that I’ll add this anytime soon. I think there must be better solutions, maybe store file on encrypted disk image … or not sure if that’s right term, but I think file encryption is better done by dedicated app.
This is what I’m working on now. It’s going to take a few weeks more to have something ready, but it’s my focus.
I’d be interested to do this, but I think there are a bunch of other language things that have more priority.