Is it possible to use the og:description for the regular meta description as well?

Hi there! Grabbing the first piece of content and add it as `og:description` works fine, thanks a lot for that. I'm just curious if there is a way to also use this content as regular `meta name="description"` if nothing is specified otherwise via

```
.. meta::
   :description:
```
Would be very nice to have, any pointers on how to achieve that?