My Emacs configuration https://git.cjennings.net/dotemacs/atom?h=main 2026-04-22T22:09:44+00:00 2026-04-22T22:09:44+00:00 Craig Jennings c@cjennings.net 2026-04-22T22:09:44+00:00 urn:sha1:3d905270b48ab36f880d686a9c85f157c0460898 Third and final pure helper for the coverage-report command. Takes the hash tables produced by parse-lcov and parse-diff-output and returns per-file records ready for the report buffer. Output is a list of plists sorted by file path. Each record has :path, :changed-lines, :covered-lines, :uncovered-lines, and :tracked. A file that appears in the diff but not in the LCOV data is :tracked nil with both line lists empty. That way the reporter can distinguish "coverage isn't looking at this file" (README edits, test files, config) from "tests didn't exercise this code." Tests cover Normal (all covered, partial, multiple files sorted), Boundary (file not tracked, tracked file with no covered lines, empty changed-lines from deletion-only hunks, empty inputs), and Error (nil inputs return an empty list instead of erroring). With this helper in place, the core data pipeline is complete: LCOV file + git diff scope go in, per-file records come out. Next up is the backend registry and the elisp backend, then the cj/coverage-report command ties it all together.