Please see line 20 and 21:
My question is about how vim decides to auto-indent line 21, and how to adjust that behaviour.
When I took this screenshot I had
formatoptions=qrn1a set, however I believe even without
a set, if I format using
gqip, for example, the same thing happens.
I have many options set, pertaining to text formatting, and it's not clear to me which is doing that and why.