Replace the physical ekp-region renderer with ekp-buffer text-property projection backed by shared semantic layout plans and stable live-edit transactions.
Optimize the C-backed resize hot path, and add deterministic performance, ERT, GUI, fuzz, release, and documentation coverage for task017 through task032.
BREAKING CHANGE: require ekp-buffer instead of ekp-region and rename module-owned ekp-region-* settings to ekp-buffer-*.
Complete task002 through task016 across cache correctness, editor lifecycle, C boundaries, build and release governance, dictionary provenance, performance, interactive workflows, tests, documentation, and final cleanup.
The renderer (shared by both engines) is now lossless: synthesized
glue carries the original text it replaced (ekp-glue), soft line
breaks carry the whitespace swallowed around the break
(ekp-soft-break), break hyphens are marked (ekp-soft-hyphen), and
paragraph-edge whitespace survives as zero-display ekp-hidden text.
Orphaned ekp--combine-glues-and-boxes / ekp--interleave removed.
New ekp-region.el:
- ekp-justify-region / ekp-unjustify-region: in-place justification
with exact structural restore (character- and property-exact),
robust to edits made while justified
- ekp-auto-justify-mode: keeps the buffer justified at the window
width; debounced re-flow on window resize, incremental
per-paragraph re-justification after edits (served by the
paragraph cache)
- fix found in live GUI testing: buffer-local members of
window-size-change-functions receive the WINDOW as argument and
may run with an unrelated buffer current; the handler now resolves
window and buffer explicitly (regression test included)
Tests: 47 ERT (36 core + 11 region) passing; 300-case fuzz 0
failures (C/elisp parity unchanged); byte-compile clean with
error-on-warn. Verified interactively in GUI Emacs: justified at
1403px maximized, auto-reflowed to 614px on frame resize.
docs: interactive-use section in readme.md / readme_zh.md
ci: byte-compile list includes ekp-region.el
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Two jobs on ubuntu-latest:
- elisp-only matrix (Emacs 29.1 floor + 30.1): byte-compile with
error-on-warn, then the ERT suite (C-module tests auto-skip)
- C-module job (apt Emacs 29.3): build ekp.so, full ERT suite with
C/elisp parity tests, then the 300-case property fuzz
Both paths were dry-run in a local ubuntu:24.04 container before
committing.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
