Problems with upgrade (redcarpet) from Jekyll 3.7 to 4.2

[chuckhoupt]

Is “csv-database” a particular feature of Redcarpet? Certainly Kramdown can be used in a Liquid loop that accesses CSV data from Jekyll’s _data directory.

Here’s an older topic that discusses the removal of alternate Markdown engines:

Jekyll 4.0: Many Markdown engines removed. Reason?

I’ve finally got around to upgrading my blog from Jekyll 1.5(!) to a more modern version of Jekyll. However I notice that Jekyll 4.0 dropped support for the RDiscount and Redcarpet markdown engines, leaving only(?) the Kramdown engine. I happen to use the RDiscount engine and I’m pretty sure that changing the engine of my site will break lots of old posts in subtle ways. Is there a reason that support was dropped? The PR dropping the support didn’t mention a rationale. Neither did the release …