In my testing, we appear to require markdown 2.3 or later. We should consider either documenting / checking this minimum in `quarto check`, or adding support for older versions, whatever makes the most sense.
cderv
2023-03-07T15:02:02Z
dragonstyle
v1.4
open
Document or support minimum rmarkdown version
https://github.com/quarto-dev/quarto-cli/issues/4673