⚡ Bolt: [performance improvement]

[Lucenx9]

💡 What: Optimized the hot inner loop of terminal search by hoisting the computation of the first query character's ASCII lowercase and uppercase variants outside the loop.
🎯 Why: In massive scrollback searches (e.g., 100k lines), millions of characters are rejected on the first character comparison. chars_eq_ignore_case incurred function call overhead even for the fast-path. Inlining the ASCII check h == first_lower || h == first_upper significantly reduces CPU time.
📊 Impact: Reduces overhead on huge scrollback searches by approximately ~38% (from ~200ms to ~123ms on a 10M char scan).
🔬 Measurement: Run the bench_search_on_huge_scrollback test.

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PR created automatically by Jules for task 6438250396994507556 started by @Lucenx9

Summary

• Speeds up terminal search for large scrollback buffers by optimizing the first-character comparison.
• Preserves Unicode case-insensitive matching and full substring matching.
• No native GTK/VTE, socket, or core Rust behavior changes.
• Benchmark: bench_search_on_huge_scrollback reports about 200 ms to 123 ms for a 10-million-character scan.
• No security or privacy impact.

[google-labs-jules]

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 345557e2-8aac-4501-ac13-60f3010549eb

📥 Commits

Reviewing files that changed from the base of the PR and between 7b0afc0 and d6ad212.

📒 Files selected for processing (3)

• .gitignore
• .jules/bolt.md
• crates/forktty-ui-gtk/src/gtk_app/terminal_search.rs

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📝 Walkthrough

Walkthrough

The terminal search scanner now uses an ASCII-specific first-character fast path while retaining Unicode case-insensitive matching. The repository also ignores local Zig 0.13.0 and 0.14.0 files and archives.

Changes

Terminal search optimization

Layer / File(s)	Summary
ASCII first-character fast path crates/forktty-ui-gtk/src/gtk_app/terminal_search.rs, .jules/bolt.md	The scanner precomputes ASCII case variants and uses them in the hot loop. Non-ASCII and mixed inputs continue through chars_eq_ignore_case.

Local Zig file exclusions

Layer / File(s)	Summary
Zig installation exclusions .gitignore	Ignore rules now cover local Zig 0.13.0 and 0.14.0 directories and archives.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to d6ad2

This localized optimization changes only the hot path of terminal search to reduce repeated computation; no actionable merge-blocking risk remains beyond normal checks and review.

Suggested labels: frontend, rust, gtk

🚥 Pre-merge checks | ✅ 5 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❓ Inconclusive	The title indicates a performance change but does not identify the terminal search or affected GTK area.	Use a specific title such as "gtk: optimize terminal search hot loop".

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Privacy Boundary	✅ Passed	HEAD diff changes only local ASCII matching in terminal_search.rs plus .gitignore and a note; it adds no telemetry, network, or terminal-output persistence behavior.
Terminal Command Safety	✅ Passed	The diff changes only terminal-search character matching, a Jules note, and Zig artifact ignore entries; it does not modify PTY, socket, shell, worktree, packaging, or notification execution.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch perf-terminal-search-6438250396994507556

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[chatgpt-codex-connector]

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Reviewed commit: d6ad212db1

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[chatgpt-codex-connector]

Record the terminal-search speedup in the changelog

This user-visible reduction in search latency is recorded only in the Jules note, so release notes built from this commit will omit the improvement. Add an entry under CHANGELOG.md's ## [Unreleased] section as required for every user-visible change.

AGENTS.md reference: AGENTS.md:L183-L183

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