commit-diff-analyzerlisted

# Commit Diff Analyzer ## Goal Analyze code changes between two git commits, presenting commit metadata, change summaries, and detailed diffs in a structured format for easy review. ## Trigger - User says "对比 commit"、"compare commits"、"查看两个提交的差异" - User provides two commit IDs and wants to see what changed ## Usage Pattern When user provides two commit IDs (in any order or format), analyze the changes between them: 1. **Validate commits exist**: Run `git cat-file -t <commit>` for each commit ID 2. **Get commit info**: Run `git log -1 --format=fuller <commit>` for both commits 3. **Show diff**: Run `git diff <older-commit>..<newer-commit>` (chronological order) 4. **Show stats**: Run `git diff --stat <older-commit>..<newer-commit>` ## Output Organization Present the analysis with: 1. **Commit metadata** - Author, date, commit message for both commits 2. **Change summary** - Files changed, insertions, deletions 3. **Detailed diff** - Line-by-line changes with context 4. **File breakdown** - Group by: Modified, Added, Deleted files ## Key Commands ```bash # Validate commits exist git cat-file -t <commit-id> # Get full commit info git log -1 --format="Hash: %H%nAuthor: %an%nDate: %ad%nMessage: %s%n" <commit-id> # Chronological diff (older..newer) git diff <older-commit>..<newer-commit> # Diff stat git diff --stat <older-commit>..<newer-commit> # Show files changed git diff --name-only <older-commit>..<newer-commit> ```