⚡ Bolt: Optimize search fast-path - #411
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Extracts first-character ASCII conversions out of the search hot loop to prevent redundant iterations when checking common prefixes. Reduces baseline iteration overhead during full-scrollback searches. Co-authored-by: Lucenx9 <185146821+Lucenx9@users.noreply.github.com>
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| ## 2024-05-18 - [Terminal Search Fast-path Optimization] | |||
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.jules directory
This creates a new root content category solely for a three-line note about one terminal-search implementation detail. Repository guidance limits new top-level directories to durable categories and directs feature-specific material to remain near its owner, so this generated note should be removed or moved beside the terminal-search code if it provides lasting value.
AGENTS.md reference: AGENTS.md:L131-L131
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| let first_lower = first_needle.to_ascii_lowercase(); | ||
| let first_upper = first_needle.to_ascii_uppercase(); |
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For users searching large scrollback buffers, this fast path intentionally changes observable search latency, but CHANGELOG.md still has an empty Unreleased section. Add a Changed entry so the optimization is included in release notes as required for user-visible changes.
AGENTS.md reference: AGENTS.md:L183-L183
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💡 What: Hoist first-character case-conversion out of the search hot loop
for_each_char_match_start.🎯 Why: In search loops, performing the expensive
.to_ascii_lowercase()/.to_ascii_uppercase()for every single character is a performance bottleneck.📊 Impact: Speeds up the fast-path by eliminating redundant ASCII conversions for every character, providing a measurable performance improvement for full-scrollback text searches.
🔬 Measurement: Run
cargo test -p forktty-ui-gtk --no-default-features bench_search_on_huge_scrollback -- --exactwithFORKTTY_BENCH_SCROLLBACK=100000to measure the scrollback search speed.PR created automatically by Jules for task 6630550538860219572 started by @Lucenx9