szz-bug-introducing-commit-identifier

npx skills add majiayu000/claude-skill-registry --skill szz-bug-identifier --agent claude-code

Same command for any agent — swap --agent for codex, cursor, copilot.

# SZZ Bug-Introducing Commit Identifier ## Overview This skill performs SZZ (Śliwerski-Zimmermann-Zeller) algorithm analysis to identify bug-introducing commits in git repositories. Given a bug-fixing commit, it traces modified lines back through version history using git blame to find candidate commits that originally introduced the buggy code. ## Workflow ### 1. Identify the Bug-Fixing Commit Start by identifying the commit that fixes the bug. This can be obtained from: - Commit hash provided by the user - Issue tracker references (e.g., "fixes #123") - Commit message analysis (e.g., "fix:", "bug:") - Manual identification by the user ### 2. Run the SZZ Analysis Use the provided script to perform the analysis: ```bash python scripts/szz_analyzer.py <fix-commit-hash> ``` **Options:** - `--repo <path>`: Specify repository path (default: current directory) - `--json`: Output results in JSON format for programmatic processing - `--top <n>`: Number of top candidates to show (default: 10) **Example:** ```bash python scripts/szz_analyzer.py abc123def --repo /path/to/repo --top 5 ``` ### 3. Interpret Results The script outputs a ranked list of candidate bug-introducing commits with: - **

python scripts/szz_analyzer.py <fix-commit-hash>
python scripts/szz_analyzer.py abc123def --repo /path/to/repo --top 5
for commit in $(git log --grep="fix:" --format="%H"); do
echo "Analyzing fix: $commit"
python scripts/szz_analyzer.py $commit --top 3
done