dotemacs/tests/test-system-lib--format-region-with-program.el, branch main My Emacs configuration https://git.cjennings.net/dotemacs/atom?h=main 2026-06-20T15:32:21+00:00 refactor: extract shared format-region helper into system-lib 2026-06-20T15:32:21+00:00 Craig Jennings c@cjennings.net 2026-06-20T15:32:21+00:00 urn:sha1:5b5d24b5d14b9828b2acc2e39b4530be9091e512 prog-json and prog-yaml each carried a byte-identical cj/--<lang>-format-region that runs a formatter over the buffer via call-process-region and replaces it on exit 0. Hoist it to system-lib as cj/format-region-with-program with a generic output buffer, and point both formatters at it. Adds the first direct unit coverage of the helper (Normal, Boundary, Error).