wip_on_ref.yml

# .github/workflows/wip-on-ref.yml
name: Label linked issues as WIP

on:
  pull_request:
    types: [opened, edited, synchronize]

permissions:
  issues: write
  pull-requests: read

jobs:
  label-wip:
    runs-on: ubuntu-latest
    steps:
      - name: Add WIP label to linked issues
        uses: actions/github-script@v7
        with:
          script: |
            const body = context.payload.pull_request.body || '';
            const issuePattern = /refs?\s+#(\d+)/gi;
            const matches = [...body.matchAll(issuePattern)];

            if (matches.length === 0) {
              console.log('No linked issues found.');
              return;
            }

            for (const match of matches) {
              const issueNumber = parseInt(match[1]);

              // Add WIP label (issue stays open, just gets labelled)
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: issueNumber,
                labels: ['WIP']
              });

              console.log(`Labelled issue #${issueNumber} as WIP`);
            }