- kte refuses to start when stdin is not a terminal: piped bytes were
executed as editor commands (C-k s plus a path writes a file), and
after EOF the loop spun at full CPU with no way to quit.
- The terminal frontend handles all pending input before drawing (a
paste used to cost a frame and a full redraw per character) and
redraws only after input, a resize or deferred opens, else once a
second. The renderer caches, per row and buffer version, where the
horizontally scrolled part of a line starts and the cursor's render
column, instead of rescanning the line every frame. Idle CPU with the
cursor at the end of a 20 MB line: one full core -> ~1%.
- Buffers with a virtual name (+HELP+) are not journaled and saving one
asks for a file name; it used to write ./+HELP+ and journal under
that path.
- Yank with a repeat count is capped at 256 MiB in total instead of
reserving count x size bytes (C-u 1000000 C-y of a large kill).
- Remove an overload clang reports as unused (-Werror on macOS).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015rcVQiiWyTzoNrsvLSaAfB
- A session never unlinks a journal it does not own: Detach, ResetJournal
and NotifyFilenameChanged skip removal when this session was locked
out or another session holds the lock, and PruneSwapDir skips held
journals. A second session used to delete the first session's live
journal on save or close.
- The writer thread's periodic fsync now runs under mtx_. It fsynced fds
that the main thread could close concurrently (or that had been
reused); an in-flight fsync also kept a just-closed journal's flock
alive, so the owner's own cleanup saw its journal as held.
- Compaction locks the compacted file before renaming it into place and
keeps using it, so the journal is never unlocked in between; a failed
lock on the truncating reopen marks the session locked out.
- Unnamed-buffer journals include the pid, so sessions no longer share
(and delete) each other's unnamed-N.swp.
- RowsView keeps only the previous generation of cached rows: keeping
all of them made C-u 2000 M-d on a 1 MiB line use ~2 GB.
- Renderers run regex match highlighting through ForEachRegexMatch,
which uses the large-stack worker for lines over 512 bytes; some
patterns overflowed the main stack well under the previous 10,000
byte limit.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015rcVQiiWyTzoNrsvLSaAfB
- C0 controls and DEL were passed to ncurses, which acted on them: a
carriage return moved to column 0 and the line padding then erased
the text, so every line of a CRLF file drew blank, and a backspace
ate the previous character. They are now drawn in caret notation
(^M, ^H, ^?) and counted as two cells. C1 controls (and stray bytes
0x80-0x9F, which decode to them; U+009B is CSI) are drawn as '?'.
- The width rule lives in TermWidth.h and is shared by the renderer's
drawing loop, its cursor placement and the command layer's
horizontal scrolling and mouse mapping, which also disagreed on NUL
and invalid bytes.
- GUI config: columns/rows must be 1..1000 and the font size a finite
4..200 (TOML 'size = inf' and huge values were accepted, leading to
UB in float-to-int conversion and int overflow downstream).
Verified in tmux: a CRLF file now shows 'first line^M' where the
baseline showed a blank line.
Audit findings B9 (and the CR/BS case from the follow-up review).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015rcVQiiWyTzoNrsvLSaAfB
libstdc++'s std::regex matcher recurses about once per matched
character, so '.*', 'a+' or '(a|b)*' on a line of a few tens of
thousands of characters (minified JS/JSON) overflowed the 8 MiB stack
and crashed the editor from the regex search prompt or regex replace.
Regex search and regex replace now run their matching on a worker
thread with a 1 GiB reserved stack (RunWithLargeStack; the caller
waits, so nothing is shared concurrently). Renderers skip regex match
highlighting on lines over 10,000 bytes. Catastrophic backtracking
(e.g. (a*)*b) is still possible: std::regex has no time limit.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015rcVQiiWyTzoNrsvLSaAfB
- PieceTable::Insert/Delete adjust a valid line index directly (shift
later line starts, add or drop starts for inserted or deleted
newlines) instead of invalidating it, which forced a byte-by-byte
rescan of the whole buffer on the next line query. On a 38 MB,
1M-line buffer, insert + line query drops from 14.7 ms to 0.28 ms.
- The terminal and ImGui renderers fetch only the rows they draw
(Nrows + GetLineString) instead of Buffer::Rows(), which rebuilt a
string for every line of the file on the first frame after each edit.
Qt's line-count uses switch to Nrows().
ImGuiRenderer.cc was syntax-checked with g++ and clang++ against the
vendored ImGui headers; the GUI targets could not be built here (no
SDL2 or Qt6).
Audit findings P1, P2.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015rcVQiiWyTzoNrsvLSaAfB
- Introduced SwapManager for sidecar journaling of buffer mutations, with a safe recovery mechanism.
- Added group undo/redo functionality, allowing atomic grouping of related edits.
- Implemented `SwapRecorder` and integrated it as a callback interface for mutations.
- Added unit tests for swap journaling (save/load/replay) and undo grouping.
- Refactored undo to support group tracking and ID management.
- Updated CMake to include the new tests and swap journaling logic.
- Introduced visual-line mode for multi-line selection and edits.
- Implemented commands, rendering, and keyboard shortcuts.
- Added tests for broadcast operations in visual-line mode.
- Added full UTF-8 support for terminal rendering, including multi-width character handling.
- Improved font handling in ImGui with expanded glyph support (Greek, Mathematical Operators).
- Updated locale initialization to enable proper character rendering.
- Bumped version to 1.5.8.
- Added prefetching in both terminal and GUI renderers to optimize visible row highlights.
- Introduced background worker for offscreen highlight warming to improve scrolling performance.
- Refactored `HighlighterEngine` to manage thread-safety, caching, and stateful re-computation.
- Integrated changes into `HighlighterEngine`, `TerminalRenderer`, and `GUIRenderer`.
- Bumped version to 1.2.0 in preparation for the release.
- Introduced `HighlighterRegistry` with support for multiple language highlighters (e.g., JSON, Markdown, Python).
- Added `JsonHighlighter` implementation for basic JSON syntax highlighting.
Release / Bump Homebrew formula (push) Has been cancelled
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- Expanded help text and command documentation with detailed keybinding descriptions.
- Added theme customization support to GUIConfig (Nord default, light/dark variants).
- Adjusted for consistent indentation and debug instrumentation in undo system.
- Enhanced test cases for multi-line, UTF-8, and branching scenarios.
Release / Bump Homebrew formula (push) Has been cancelled
- Display buffer position prefix "[x/N]" in GUI and terminal renderers.
- Improve `kte` and `kge` man pages with frontend usage details and project homepage.
- Update README with GUI invocation instructions.
- Bump version to 1.0.0.
- Add visual file picker for GUI with toggle support.
- Introduce `GUIConfig` class for loading GUI settings from configuration file.
- Refactor window initialization to support dynamic sizing based on configuration.
- Add macOS-specific handling for fullscreen behavior.
- Improve header inclusion order and minor code cleanup.
- Normalize path handling for buffer operations, supporting tilde expansion and absolute paths.
- Introduce `DisplayNameFor` to uniquely resolve buffer display names, minimizing filename clashes.
- Add new commands: `ShowWorkingDirectory` and `ChangeWorkingDirectory`.
- Refine keybindings and enhance existing commands for improved command flow.
- Adjust GUI and terminal renderers to display total line counts alongside filenames.
- Update coding style to align with project guidelines.
Claude
kyle