zit annotate PATH — which check-in introduced each line of one tracked file at the current checkout, and when. One canonical spelling (no blame/praise). The engine walks the file's full-ancestry version chain (repostate.ancestorsOf, the same 3.3 walk merge-base/bisect use; per-version content via Repository.fileAt, the one 8 effective-set query), diffs adjacent versions with the one house line-diff core (merge3.matchLines), and pushes each line's origin back to the OLDEST version carrying it. Across a merge, a line in ANY parent side is charged to that parent (primary first, repo-state 3.2), never to the merge; the merge is charged only for lines in no parent version. Output: 10-char hash, ISO date from event mtime, the line verbatim; a binary file refuses exit 1. Reviewed adversarially (merge attribution hand-traced correct). 1673 unit + 352 e2e green. check-in: f774a1a2a7 user: dmestas tags: cli