name: PR on: pull_request_target: types: - opened - edited - synchronize jobs: main: name: Validate PR title runs-on: ubuntu-latest steps: - uses: amannn/action-semantic-pull-request@v5.2.0 with: # This ensures the subject doesn't start with an uppercase character subjectPattern: ^(?![A-Z]).+$ subjectPatternError: | The subject "{subject}" found in the pull request title "{title}" didn't match the configured pattern. Please ensure that the subject doesn't start with an uppercase character. env: GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}