action.yml

name: Check release branch
inputs:
  release-branch:
    description: 'Release branch to check'
    required: true
    default: '3.x'
runs:
  using: composite
  steps:
    - name: Squash current branch commits
      id: get-commit-to-cherry-pick
      shell: bash
      run: |
        git checkout -b ${{github.head_ref}}-squashed
        git reset --soft refs/remotes/origin/master
        git add -A
        git config user.email "dummy@commit.com"
        git config user.name "Dummy commit"
        git commit -m "squashed commit"
        echo "commit-to-cherry-pick=$(git rev-parse HEAD)" >> "$GITHUB_OUTPUT"
    - name: Attempt merge current branch to ${{ inputs.release-branch }}
      shell: bash
      run: |
        git checkout ${{ inputs.release-branch }}
        {
          git cherry-pick ${{ steps.get-commit-to-cherry-pick.outputs.commit-to-cherry-pick}}
        } || {
          git status ; git diff ; exit 1
        }