---
phase: 07-log-output-emulation
plan: 01
subsystem: command-translation
tags: [log, oneline, template, limit, sl]

# Dependency graph
requires:
  - phase: 03-execution-pipeline
    provides: run_sl function and ParsedCommand interface
  - phase: 04-direct-command-mappings
    provides: flag translation pattern (cmd_add.py reference)
provides:
  - git log --oneline flag translation via sl -T template
  - git log -N/-n N/--max-count=N limit flag translation via sl -l N
  - sl_repo_with_commits test fixture for multi-commit testing
  - comprehensive E2E tests for log flag combinations
affects: [08-diff-output-emulation, 09-branch-checkout-flow]

# Tech tracking
tech-stack:
  added: []
  patterns: [sl-template-output, multi-variant-flag-parsing]

key-files:
  created: []
  modified:
    - cmd_log.py
    - tests/conftest.py
    - tests/test_cmd_log.py

key-decisions:
  - "Semantic match for --oneline: sl uses 12-char hash vs git 7-char - acceptable per ROADMAP"
  - "ONELINE_TEMPLATE constant for reusable sl -T template"
  - "While loop with index for multi-arg flag parsing (-n N consumes two args)"

patterns-established:
  - "sl-template-output: Use sl -T flag with template string for custom output formats"
  - "multi-variant-flag-parsing: Handle multiple flag formats (-N, -n N, -nN, --flag=N) with unified translation"

# Metrics
duration: 3min
completed: 2026-01-18
---

# Phase 7 Plan 01: Log Output Emulation Summary

**git log --oneline via sl template and -N limit via sl -l flag, with 4 flag format variants**

## Performance

- **Duration:** 3 min
- **Started:** 2026-01-18T14:08:00Z
- **Completed:** 2026-01-18T14:11:00Z
- **Tasks:** 2
- **Files modified:** 3

## Accomplishments
- FLAG-04 satisfied: git log --oneline outputs `<hash> <subject>` format via sl template
- FLAG-05 satisfied: git log -N limits output to N commits via sl log -l N
- All 4 limit flag formats supported: -N, -n N, -nN, --max-count=N
- Combined flags work in either order (--oneline -5 and -5 --oneline equivalent)
- Passthrough preserved for unrecognized flags

## Task Commits

Each task was committed atomically:

1. **Task 1: Update cmd_log.py with flag translation** - `45704a2` (feat)
2. **Task 2: Add sl_repo_with_commits fixture and E2E tests** - `4712705` (test)

## Files Created/Modified
- `cmd_log.py` - Flag parsing for --oneline and -N variants, sl argument translation
- `tests/conftest.py` - sl_repo_with_commits fixture with 10 commits
- `tests/test_cmd_log.py` - 7 new tests for oneline format, limit variants, and combined flags

## Decisions Made
- Used semantic matching for --oneline format per ROADMAP (sl 12-char hash vs git 7-char hash is acceptable)
- Defined ONELINE_TEMPLATE as module constant for clarity and testability
- Used while loop with index increment for -n N format (consumes two args)

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered
None

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness
- cmd_log.py pattern established for future log flag additions (--graph, --pretty, etc.)
- sl_repo_with_commits fixture available for any test needing multiple commits
- Ready for Phase 08 (Diff Output Emulation)

---
*Phase: 07-log-output-emulation*
*Completed: 2026-01-18*
