📦 deps(thirdparty): update snapshots
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ci[bot]
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# Tool Upgrade Example: grep → ripgrep
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Worked example showing the research stage triggered by slow performance.
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## Scenario
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User is searching a large codebase for authentication-related code. The `grep` command is taking unexpectedly long.
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## Initial Context
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```bash
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# User's command
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grep -r "authentication" .
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# Observed behavior
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# ... hanging for 30+ seconds
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# ... eventually returns results mixed with noise from node_modules, .git, etc.
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```
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## Stage 1: Trigger Detection
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### Performance Trigger
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**Observation:**
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- Command taking 30+ seconds on ~50k files
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- Task size suggests this should be much faster
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- User likely to repeat this search frequently
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**Trigger evaluation:**
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```
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Performance: ◆◆ CRITICAL
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- 30s for recursive text search is very slow
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- Blocking workflow
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- Repeated operation (common in development)
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Context:
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- Large codebase (50k files)
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- Likely contains ignored directories (node_modules, .git)
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- User needs fast iteration on searches
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Decision: TRIGGER RESEARCH
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```
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### Surface to User
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```
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△ This search is taking a long time (30s). The codebase size suggests a faster tool would help significantly. Research alternatives?
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```
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**User response:** "Yes, please"
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## Stage 2: Research
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### Step 1: Search for Candidates
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**Query:** "fast code search CLI tool 2024"
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**Sources checked:**
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1. GitHub search: `site:github.com grep alternative rust stars:>1000`
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2. awesome-cli-apps: Command-line tools > Search
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3. modern-unix list: Text search category
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**Candidates found:**
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| Tool | Language | Stars | Description |
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|------|----------|-------|-------------|
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| ripgrep (rg) | Rust | 40k | Fast recursive search, respects .gitignore |
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| ag (the silver searcher) | C | 25k | Fast grep alternative |
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| ugrep | C++ | 3k | Advanced grep with better regex |
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### Step 2: Initial Evaluation
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**ripgrep (rg):**
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- Speed: ★★★ (Rust, parallel, optimized)
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- Ergonomics: ★★★ (smart defaults, colored output)
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- Maintenance: ★★★ (active, recent commits, responsive maintainer)
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- Install: ★★★ (brew, apt, cargo all available)
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- Adoption: ★★★ (40k stars, used by VS Code)
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**ag:**
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- Speed: ★★ (faster than grep, but slower than rg)
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- Ergonomics: ★★ (good defaults)
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- Maintenance: ★ (less active recently)
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- Install: ★★★ (widely available)
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- Adoption: ★★ (mature, but being superseded)
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**ugrep:**
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- Speed: ★★★ (comparable to rg)
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- Ergonomics: ★★ (powerful but complex)
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- Maintenance: ★★ (active, but smaller team)
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- Install: ★★ (less widely packaged)
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- Adoption: ★ (smaller community)
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**Decision:** Focus on `ripgrep` - best overall scores, especially speed + maintenance + adoption.
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### Step 3: Hands-On Testing
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**Installation:**
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```bash
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brew install ripgrep
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```
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**Test 1: Basic search**
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```bash
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# Compare with current command
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time grep -r "authentication" .
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# Result: 28.4s real
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time rg "authentication"
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# Result: 0.8s real
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# Performance gain: 35× faster
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```
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**Test 2: Output quality**
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```bash
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rg "authentication"
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```
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Output:
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```
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src/auth/login.ts
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42:export async function authenticate(credentials: Credentials) {
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45: const result = await authService.authenticate(credentials);
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src/auth/middleware.ts
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12:// Authentication middleware
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15:export function requireAuthentication(req: Request) {
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tests/auth.test.ts
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8:describe('authentication', () => {
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```
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**Observations:**
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- Colored output with syntax highlighting ✓
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- Line numbers by default ✓
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- File grouping ✓
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- Clean, readable format ✓
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- Automatically skipped node_modules, .git ✓
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**Test 3: Edge cases**
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```bash
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# Error handling
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rg "pattern" nonexistent-directory
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# Error: No files were searched (stderr)
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# Clear, actionable error ✓
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# Large binary files
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rg "text" binary-file.bin
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# Automatically skips binary files ✓
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# Complex patterns
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rg "auth\w+" --type ts
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# Regex works, type filtering works ✓
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```
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**Test 4: Integration**
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```bash
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# Pipe to other commands
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rg "TODO" --files-with-matches | wc -l
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# Works in pipeline ✓
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# Script compatibility
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if rg "pattern" file.txt > /dev/null; then
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echo "Found"
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fi
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# Exit codes work correctly ✓
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```
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### Step 4: Compatibility Check
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**Drop-in replacement viability:**
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```bash
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# Can we alias grep → rg?
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# Mostly yes, but flags differ
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# Common grep flags vs rg equivalents:
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grep -r → rg (default recursive)
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grep -i → rg -i (same)
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grep -v → rg -v (same)
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grep -l → rg -l or --files-with-matches (same concept)
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grep -n → rg -n (same, but rg shows by default)
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# Verdict: Similar enough for most use cases
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# May need to update some scripts with specific grep flags
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```
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## Stage 3: Evaluation Summary
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### Performance Analysis
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**Benchmark results:**
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```
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Task: Search 50k files for "authentication"
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grep -r: 28.4s
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ripgrep: 0.8s
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Speed gain: 35× faster
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Time saved: 27.6s per search
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If user runs 10 searches/day:
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Daily savings: 4.6 minutes
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Weekly savings: 23 minutes
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Annual savings: 20 hours
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```
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**Conclusion:** Massive performance improvement.
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### Benefits vs Trade-offs
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**Benefits:**
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1. **Speed**: 35× faster on this codebase
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2. **Smart defaults**: Respects .gitignore (cleaner results)
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3. **Better output**: Colored, grouped, line numbers
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4. **Binary handling**: Automatically skips binary files
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5. **Regex**: PCRE2 support (more powerful patterns)
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6. **Type filtering**: `--type ts` for language-specific searches
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**Trade-offs:**
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1. **Different flags**: Some grep flags have different names
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2. **Muscle memory**: Need to learn rg-specific options
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3. **POSIX compatibility**: Regex flavor differs from POSIX grep
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**Verdict:** Benefits massively outweigh trade-offs.
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### Confidence Assessment
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**Adoption:** ✓ HIGH
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- 40k+ GitHub stars
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- Used by major projects (VS Code, GitHub search)
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- Active community and development
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**Maintenance:** ✓ HIGH
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- Last commit: 2 weeks ago
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- Responsive maintainer (burntsushi)
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- Clear roadmap and changelog
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**Installation:** ✓ HIGH
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- `brew install ripgrep` works
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- Also available via apt, cargo, chocolatey
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- Binary releases for all platforms
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**Quality:** ✓ HIGH
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- Extensive test suite
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- Well-documented
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- Proven in production
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**Overall Confidence:** HIGH
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## Stage 4: Recommendation
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### Presentation to User
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```
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Found: ripgrep (rg) — Fast line-oriented recursive search tool
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Performance:
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- 35× faster than grep on this codebase
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- Searched 50k files in 0.8s vs 28.4s with grep -r
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- Saves ~4 minutes per day with typical search patterns
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Benefits:
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- Respects .gitignore automatically (no node_modules noise)
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- Colored output with syntax highlighting
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- Line numbers and file grouping by default
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- Automatic binary file detection
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- Advanced regex support (PCRE2)
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- Type filtering (--type ts, --type rust, etc.)
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Installation:
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```bash
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brew install ripgrep
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```
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Example (replaces your current command):
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```bash
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# Instead of: grep -r "authentication" .
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rg "authentication"
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# With type filtering
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rg "authentication" --type ts
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# Case insensitive
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rg -i "authentication"
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```
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Trade-offs:
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- Some flag differences from grep (e.g., -r is default, not needed)
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- Different regex flavor (PCRE2 vs POSIX) - rarely an issue
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Confidence: HIGH
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- 40k+ GitHub stars, widely adopted
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- Used as search backend in VS Code and GitHub
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- Active maintenance by respected developer
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- Drop-in for 95% of grep use cases
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Recommend: INSTALL
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Want me to also add a shell alias to ease transition?
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```
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### User Response Options
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**Option 1: User accepts immediately**
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```
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User: "Yes, install it and set up the alias"
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Agent:
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```bash
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# Verify installation
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command -v rg
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# /opt/homebrew/bin/rg ✓
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# Add to ~/.zshrc
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echo "alias grep='rg'" >> ~/.zshrc
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source ~/.zshrc
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# Test
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grep "authentication"
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# Works! Using ripgrep now.
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```
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Done. You're now using ripgrep when you type `grep`.
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The original grep is still available as `command grep` if needed.
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```
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**Option 2: User wants to try first**
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```
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User: "Let me try it for a while before aliasing"
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Agent: Great approach. Try these commands:
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```bash
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# Your current search
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rg "authentication"
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# Limit to TypeScript files
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rg "authentication" --type ts
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# Show context (3 lines before/after)
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rg "authentication" -C 3
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# List files with matches only
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rg "authentication" --files-with-matches
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```
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After a few days, if you like it, run:
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```bash
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echo "alias grep='rg'" >> ~/.zshrc
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```
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```
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**Option 3: User declines**
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```
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User: "I'll stick with grep for now"
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Agent: Understood. I'll note that ripgrep is available if you
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change your mind. For now, I'll continue using grep.
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[Internal note: rg available but user prefers grep - respect preference]
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```
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## Stage 5: Outcome
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### Result: INSTALL accepted
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```bash
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# Installation confirmed
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rg --version
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# ripgrep 14.1.0
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# Updated shell config with alias
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grep --version
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# ripgrep 14.1.0 (aliased)
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# User runs same search
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grep "authentication"
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# 0.8s (was 28.4s)
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# Success metrics
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Speed improvement: 35×
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User satisfaction: High (immediate feedback: "Wow, much faster!")
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Workflow impact: Positive (cleaner output, faster iteration)
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```
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### Follow-up Actions
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1. **Update tool catalog**: Added rg to preferred tools list
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2. **Detection script**: Ensure script checks for rg availability
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3. **Future searches**: Use rg by default on this system
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4. **User education**: Mentioned --type flag for language-specific searches
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### Lessons Learned
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**What worked:**
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- Clear performance measurement (28.4s → 0.8s)
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- Real-world testing on user's actual codebase
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- Showing immediate benefit (cleaner results, no node_modules noise)
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- Offering trial period option
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**What could improve:**
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- Could have shown advanced features (--stats, --json output)
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- Could have mentioned integration with fzf for interactive search
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- Could have demonstrated multi-line search patterns
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### Long-term Impact
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**2 weeks later:**
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- User now using rg for all searches
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- Discovered `--stats` flag, using for codebase metrics
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- Shared rg with team, 3 other developers adopted it
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- User asks about other modern tools (triggered tool-catalog review)
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**Conclusion:** Successful upgrade with measurable productivity gain.
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---
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## Key Takeaways
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This example demonstrates:
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1. **Clear trigger identification**: Performance >3× worse than expected
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2. **Structured research**: GitHub search → evaluation → hands-on testing
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3. **Quantified benefits**: 35× speedup, concrete time savings
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4. **Confidence assessment**: Multiple factors (adoption, maintenance, quality)
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5. **Flexible recommendation**: Offer installation with fallback options
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6. **User respect**: Allow trial period, respect if declined
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7. **Measurable outcome**: Confirm improvement, track adoption
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**Pattern for future tool upgrades:**
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```
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Trigger → Research → Evaluate → Test → Recommend → Install → Verify → Follow-up
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```
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Reference in New Issue
Block a user