
Bugfix
Fix a bug from a GitHub issue, following the reproduce-first workflow.
Install
npx skills add QwenLM/qwen-code --skill bugfix -g -a claude-code -y- Repository
- QwenLM/qwen-code28.9k
- Category
- Testing
- Updated
- 3d ago
- License
- Apache-2.0
- Context cost
- Lightabout 809 tokens
- Runs scripts
- No, instructions only
What it does
Fix a bug from a GitHub issue, following the reproduce-first workflow. Use when the user asks to fix a bug, investigate a GitHub issue, or debug a user-reported problem. Takes a GitHub issue URL or number as input.
Bugfix Workflow
Follow this workflow for GitHub issue bugfixes. Do not skip reproduction; fixing without first reproducing the bug tends to produce incomplete fixes and regressions.
Input
A GitHub issue URL or number. Slash-command arguments are appended to this skill body by Qwen Code.
Artifact Path
Use .qwen/issues/ in this repo. In the steps below, <issue-file> means the
selected issue markdown file.
Step 1: Read The Issue
Create the artifact directory if needed, then pipe the issue directly into a
markdown file using gh:
mkdir -p .qwen/issues
gh issue view <number> \
--json number,title,body \
-t '# Issue #{{.number}}: {{.title}}
{{.body}}
---
## Reproduction report
_Pending - to be filled by the test engineer._
## Verification report
_Pending - to be filled by the test engineer._
' > .qwen/issues/issue-<number>.md
Step 2: Reproduce
Spawn the test-engineer agent and point it at <issue-file>. State only the
goal: reproduce the bug. Keep the prompt minimal; the test engineer owns the
reproduction strategy.
Wait for the test engineer to finish. Then read <issue-file> to get the
reproduction report. If the status is NOT_REPRODUCED, report that and stop.
Step 3: Fix
Read the relevant code and make the fix. Use the reproduction report for context; it should contain observed behavior, expected behavior, and useful code paths.
If the bug is complex enough that the first attempt does not work, use the
structured-debugging skill and work through hypotheses systematically.
Step 4: Verify
Build and bundle your changes:
npm run build && npm run bundle
Spawn the test-engineer agent again, pointing it at the same issue file. State
the goal: verify the fix using node dist/cli.js.
If the verification status is STILL_BROKEN, read the updated issue file, go
back to Step 3, and iterate. Do not proceed until verification returns
VERIFIED_FIXED.


