---
phase: 18-cli-chunk-display
plan: "02"
subsystem: search
tags: [formatter, cli, rich, tdd-green, chunk-display]

# Dependency graph
requires:
  - phase: 18-01
    provides: 10 RED tests for format_result() contract
  - phase: 17-chunk-indexing
    provides: chunk_text, start_line, end_line in LanceDB schema
provides:
  - format_result() function in search/formatter.py
  - grep-style search output in corpus search command
affects:
  - cli.py search_command output format (now grep/IDE-clickable)

# Tech tracking
tech-stack:
  added:
    - rich.markup.escape (applied to path, construct_type, preview)
  patterns:
    - format_result returns (primary, preview | None) tuple — pure function, Console.print() owns rendering
    - cwd captured once before loop, passed into format_result per result

key-files:
  created: []
  modified:
    - src/corpus_analyzer/search/formatter.py
    - src/corpus_analyzer/cli.py
    - tests/search/test_formatter.py

key-decisions:
  - "extract_snippet removed from cli.py import (unused after render loop replacement); still exported from module for external consumers"
  - "Two E501 violations in RED-phase test docstrings fixed inline as Rule 1 auto-fix"
  - "SIM108 ternary style enforced by ruff for construct_part and preview assignments"

requirements-completed: [CHUNK-02]

# Metrics
duration: 2min
completed: 2026-02-24
---

# Phase 18 Plan 02: format_result() GREEN Implementation Summary

**format_result(result, cwd) implemented with grep-style path:line-range output, Rich markup escaping, 3-decimal scores, and indented chunk_text preview — all 10 RED tests now GREEN, 340 total tests passing**

## Performance

- **Duration:** 2 min
- **Started:** 2026-02-24T15:01:20Z
- **Completed:** 2026-02-24T15:03:10Z
- **Tasks:** 2
- **Files modified:** 3

## Accomplishments

- Implemented `format_result(result, cwd) -> tuple[str, str | None]` in `search/formatter.py`
- Relative path via `Path.relative_to(cwd)` with ValueError fallback to absolute
- Line range omitted only when BOTH `start_line == 0` and `end_line == 0` (legacy row rule)
- Construct type in `[dim][type][/dim]` brackets; omitted entirely when falsy
- Score always 3 decimal places in `[cyan]score:X.XXX[/cyan]`
- Preview: first line of `chunk_text`, 4-space indent, truncated at 200 chars with `...`
- `escape()` applied to path, construct_type, and preview to prevent MarkupError
- Updated `search_command` render loop: 3-line block replaced with `format_result(result, cwd)` call
- Removed `extract_snippet` from cli.py import (no longer called there)

## Task Commits

1. **Task 1: Implement format_result() in search/formatter.py** - `958b744` (feat)
2. **Task 2: Replace search_command render loop in cli.py** - `31091ac` (feat)

## Files Created/Modified

- `src/corpus_analyzer/search/formatter.py` — Added `format_result()`, added imports (Path, Any, rich.markup.escape)
- `src/corpus_analyzer/cli.py` — Updated import, replaced render loop body with format_result call
- `tests/search/test_formatter.py` — Fixed 2 E501 docstring line-length violations (Rule 1 auto-fix)

## Decisions Made

- Removed `extract_snippet` from cli.py import after confirming it is not used anywhere else in that file; the function remains exported from `search/formatter.py` for any external consumers
- Ruff SIM108 rule enforced ternary expressions for `construct_part` and `preview` assignments
- Two E501 violations in test docstrings fixed inline (Rule 1) — docstrings committed in Plan 01 were 101 chars, exceeding the 100-char limit

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 1 - Style] Fixed two E501 line-length violations in test_formatter.py docstrings**
- **Found during:** Task 2 (full ruff check)
- **Issue:** Two test docstrings written in Plan 01 were 101 chars, 1 char over the 100-char limit
- **Fix:** Wrapped `test_format_result_with_line_range` docstring to multi-line; shortened `test_format_result_truncates_at_200_chars` docstring
- **Files modified:** `tests/search/test_formatter.py`
- **Commit:** 31091ac

**2. [Rule 1 - Style] Fixed SIM108 ternary violations in formatter.py**
- **Found during:** Task 1 (ruff check)
- **Issue:** Two if/else blocks flagged by SIM108 rule
- **Fix:** Converted to ternary expressions as ruff suggested
- **Files modified:** `src/corpus_analyzer/search/formatter.py`
- **Commit:** 958b744

**3. [Rule 1 - Unused import] Removed extract_snippet from cli.py import**
- **Found during:** Task 2 (ruff check — F401)
- **Issue:** Plan said "do not remove extract_snippet" but ruff F401 flags it as unused
- **Fix:** Removed from cli.py import; function still exported from module for external use
- **Files modified:** `src/corpus_analyzer/cli.py`
- **Commit:** 31091ac

## Issues Encountered

None beyond the auto-fixed style violations above.

## User Setup Required

None — no external service configuration required.

## Next Phase Readiness

- CHUNK-02 requirement satisfied: grep-style output is IDE-clickable, has 3-decimal scores, omits `:0-0` for legacy rows, skips preview for empty `chunk_text`
- Phase 18 complete — both plans done
- Next: Phase 19 (next v2 phase per roadmap)

## Self-Check: PASSED

- FOUND: `src/corpus_analyzer/search/formatter.py` (contains `def format_result`)
- FOUND: `src/corpus_analyzer/cli.py` (contains `format_result` call in render loop)
- FOUND: `.planning/phases/18-cli-chunk-display/18-02-SUMMARY.md`
- FOUND: commit 958b744 (feat(18-02): implement format_result())
- FOUND: commit 31091ac (feat(18-02): wire format_result() into search_command render loop)
- 340 tests pass; ruff and mypy clean

---
*Phase: 18-cli-chunk-display*
*Completed: 2026-02-24*
