mirror of
https://github.com/getcompanion-ai/co-mono.git
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6e4270a286
The initial render of a session, and any re-draws caused by terminal
resizing are noticeably slow, especially on conversations with 20+
turns and many tool calls.
From profiling with `bun --cpu-prof` (available since bun 1.3.2), the
majority of the rendering (90%) is spent on detection of emojis in the
string-width library, running the expensive `/\p{RGI_Emoji}$/v`
regular expression on every individual grapheme cluster in the entire
scrollback. I believe it essentially expands to a fixed search against
every possible emoji sequence, hence the amount of CPU time spent in it.
This change replaces the `stringWidth` from string-width with a
`graphemeWidth` function that performs a similar check, but avoids
running the `/\p{RGI_Emoji}$/v` regex for emoji detection unless it
contains codepoints that could be emojis.
The `visibleWidth` function also has two more optimisations:
- Short-circuits string length detection for strings that are entirely
printable ASCII characters
- Adds a cache for non-ASCII segments to avoid recomputing string length
when resizing
33 lines
2.2 KiB
Markdown
33 lines
2.2 KiB
Markdown
# Changelog
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## [Unreleased]
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### Added
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- `isShiftCtrlO()` key detection function for Shift+Ctrl+O (Kitty protocol)
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- `isShiftCtrlD()` key detection function for Shift+Ctrl+D (Kitty protocol)
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- `TUI.onDebug` callback for global debug key handling (Shift+Ctrl+D)
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- `wrapTextWithAnsi()` utility now exported (wraps text to width, preserving ANSI codes)
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### Changed
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- README.md completely rewritten with accurate component documentation, theme interfaces, and examples
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- `visibleWidth()` reimplemented with grapheme-based width calculation, 10x faster on Bun and ~15% faster on Node ([#369](https://github.com/badlogic/pi-mono/pull/369) by [@nathyong](https://github.com/nathyong))
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### Fixed
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- Markdown component now renders HTML tags as plain text instead of silently dropping them ([#359](https://github.com/badlogic/pi-mono/issues/359))
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- Crash in `visibleWidth()` and grapheme iteration when encountering undefined code points ([#372](https://github.com/badlogic/pi-mono/pull/372) by [@HACKE-RC](https://github.com/HACKE-RC))
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- ZWJ emoji sequences (rainbow flag, family, etc.) now render with correct width instead of being split into multiple characters ([#369](https://github.com/badlogic/pi-mono/pull/369) by [@nathyong](https://github.com/nathyong))
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## [0.29.0] - 2025-12-25
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### Added
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- **Auto-space before pasted file paths**: When pasting a file path (starting with `/`, `~`, or `.`) and the cursor is after a word character, a space is automatically prepended for better readability. Useful when dragging screenshots from macOS. ([#307](https://github.com/badlogic/pi-mono/pull/307) by [@mitsuhiko](https://github.com/mitsuhiko))
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- **Word navigation for Input component**: Added Ctrl+Left/Right and Alt+Left/Right support for word-by-word cursor movement. ([#306](https://github.com/badlogic/pi-mono/pull/306) by [@kim0](https://github.com/kim0))
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- **Full Unicode input**: Input component now accepts Unicode characters beyond ASCII. ([#306](https://github.com/badlogic/pi-mono/pull/306) by [@kim0](https://github.com/kim0))
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### Fixed
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- **Readline-style Ctrl+W**: Now skips trailing whitespace before deleting the preceding word, matching standard readline behavior. ([#306](https://github.com/badlogic/pi-mono/pull/306) by [@kim0](https://github.com/kim0))
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