yanamura / git-merge-diff

Github Actions: generate merge diff between tags

Git Merge Diff

This action generate git merge diff between tags.

Usage

Diff between latest and previous tag

- uses: actions/checkout@v3
  with:
    fetch-depth: 0
- name: Diff
    id: diff
    uses: yanamura/git-merge-diff@v1

or

- uses: actions/checkout@v3
  with:
    fetch-depth: 0
- name: Diff
    id: diff
    uses: yanamura/git-merge-diff@v1
    with:
        from: prev
        to: latest

Diff between HEAD and latest tag

- uses: actions/checkout@v3
  with:
    fetch-depth: 0
- name: Diff
    id: diff
    uses: yanamura/git-merge-diff@v1
    with:
        from: latest
        to: HEAD

Diff between specified tags

- uses: actions/checkout@v3
  with:
    fetch-depth: 0
- name: Diff
    id: diff
    uses: yanamura/git-merge-diff@v1
    with:
        from: v1.0.0
        to: v1.1.0

Note: don't forget to fetch.(actions/checkout only fetch depth=0)

get output(merge diff)

steps.<step id>.outputs.diff

Senario

- uses: actions/checkout@v3
  with:
    fetch-depth: 0
- name: Diff
    id: diff
    uses: yanamura/git-merge-diff@v1
- name: Create Release
    uses: actions/create-release@v1
    env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    with:
        tag_name: ${{ github.ref }}
        release_name: Release ${{ github.ref }}
        body: |
            ${{ steps.diff.outputs.diff }}
        draft: false
        prerelease: false