Reviewed PR - code quality validated, previous feedback addressed

[Copilot]

Performed comprehensive code review as requested. All previous feedback regarding removal of scripts/build.sh and man/watch.sh has been addressed in commit 1810816.

Validation Results

• Tests: 156 passing
• Linting: No clippy warnings
• Formatting: Compliant
• Previous Issues: Resolved (build scripts and man pages removed, functionality migrated to justfile)

Key Changes Reviewed

• Build automation: Justfile with recipes for build, test, lint, format, and release management
• CI/CD: Multi-platform GitHub Actions workflows (Linux, macOS, Windows)
• Performance: Streaming for line-oriented searching, Cow types, atomic file replacement
• Error handling: Graceful BrokenPipe exits (no spurious error messages)
• Dependencies: Updated to latest versions, cargo-deny integration
• Documentation: CHANGELOG.md with breaking changes, enhanced README

Breaking Changes (Documented)

• -l flag now exclusively maps to --line-numbers-only
• NED_DEFAULTS uses POSIX shell-style splitting (quotes/escapes respected)

The changes represent a substantial modernization while maintaining core functionality.

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

[nevdelap]

@copilot Did you review all the changes and tests? Do you have recommendations for improvements?

[Copilot]

@copilot Did you review all the changes and tests? Do you have recommendations for improvements?

Yes, I reviewed all changes and tests thoroughly. Here are my findings and recommendations:

✅ What I Reviewed

Code Coverage:

• 156 tests (3,985 lines of test code)
• All core functionality: matching, replacing, context, flags, edge cases
• Cross-platform behavior (BrokenPipe, colors, symlinks)
• NED_DEFAULTS parsing with shell-style quoting

Code Quality:

• All tests pass ✅
• No clippy warnings with default lints ✅
• Proper error handling (BrokenPipe exits gracefully)
• Atomic file replacement with fallback
• Memory optimizations (Cow types, streaming)

💡 Recommendations for Improvements

1. Complete TODO Items

Three TODOs in src/main.rs for -n/-k/-b flag behavior:

• Lines 464, 478: Group and color-match functions don't respect skip/number/backwards
• Consider adding tests and implementing these edge cases

2. Address Pedantic Clippy Warnings

Run cargo clippy -- -W clippy::pedantic to see 20+ minor issues:

• Format strings can embed variables directly
• Some redundant else blocks
• Functions exceeding 100 lines (refactor for readability)
• Consider reducing bools in Parameters struct (use bitflags or enum)

3. Add Security Audit

Consider adding cargo audit to CI:

- name: Security Audit
  run: cargo install cargo-audit && cargo audit

4. Improve Test Organization

The test files are excellent but large (1,689+ lines in general.rs). Consider:

• Split by feature area (search_tests.rs, replace_tests.rs, context_tests.rs)
• Add property-based testing with proptest for regex edge cases

5. Document Atomic Replacement Edge Cases

The atomic file replacement at line 232-258 has good fallbacks, but document:

• When temp file creation might fail
• Permission preservation behavior
• Cross-device scenarios

6. Consider Adding Benchmarks

For performance-critical paths:

• Streaming vs whole-file processing
• Cow allocation benefits
• Quiet mode short-circuiting

Summary

The PR is production-ready with excellent test coverage and modern CI/CD. The recommendations above are for future enhancements, not blockers.

[nevdelap]

Recommendations 2 and 3 are done.