RegexEngine.h/.cc wrap the regex engine for search, regex replace-all and
the terminal and ImGui renderers' match highlighting:
- With KTE_USE_PCRE2 (default ON; used when pkg-config finds libpcre2-8,
linked as -lpcre2-8) patterns are compiled by PCRE2 with its JIT and
matched under a match limit: catastrophic backtracking stops with a
status note instead of hanging the editor, and matching does not
recurse on the C stack (no large-stack thread; the per-keystroke and
per-frame line limit is 1 MiB instead of 2,000 bytes). Otherwise
std::regex is used as before.
- Replacement strings follow std::regex_replace (ECMAScript as libstdc++
reads it) with either engine: the PCRE2 path expands $&, $n, $`, $',
$$ itself and steps over empty matches the same way.
- Regex search walks lines over the materialized text instead of calling
GetLineView per row. The terminal renderer compiles the pattern once
per frame (it compiled it for every row).
- Only one checkpoint per journal is queued at a time: whole-file edits
in a row on a large buffer each queued a full copy of the buffer.
- default.nix and the Dockerfile add pcre2 and pkg-config.
On 26 MB: regex keystroke 1.6 -> 0.14 ms, next 62 -> 6 ms, replace-all
929 -> 438 ms; a rarely matching regex over 105 MB: 1.55 s -> 0.10 s.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015rcVQiiWyTzoNrsvLSaAfB
Update build environment to Alpine, enable GUI support, and refine developer guide
- Migrated Dockerfile base image from Ubuntu 22.04 to Alpine 3.19 for a smaller and faster container.
- Added dependencies for GUI support (SDL2, OpenGL/Mesa, Freetype, etc.) and updated CMake options.
- Enhanced `DEVELOPER_GUIDE.md` with new instructions for GUI builds, updated dependencies, and simplified custom build workflows.
- Addressed Alpine-specific ncurses library path issues in CMake configuration.
- Introduced a `Dockerfile` for setting up a minimal Ubuntu-based build environment with required dependencies.
- Added `docker-build.sh` script to simplify Linux build and test execution using Docker or Podman.
- Updated `DEVELOPER_GUIDE.md` with instructions for using Docker/Podman for Linux builds, including CI/CD integration examples.
Claude
kyle