After knitr v1.52 went to CRAN on 2026-09-06, I did something I don’t do often but have been hoping to do: I sat down and worked through the GitHub issue tracker more or less top to bottom. Over the past four days, I went through the whole backlog (with AI assistance). The issues and pull requests I fixed/merged/closed span more than a decade—the oldest was filed in May 2015, older than my oldest son! I have to admit that I’ve been exhausted by this sprint.

This post is a summary of the …