---
# Block PRs against stable branch
name: "Check PR not against 'stable'"
on:
  pull_request:
    branches: [stable]

jobs:
  block-pr:
    runs-on: ubuntu-latest
    steps:
      - name: Fail and block PR
        run: |-
          echo "Error: Pull requests directly to 'stable' are not allowed. Please PR against 'master'."
          exit 1