5 files changed, 540 insertions, 0 deletions
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
new file mode 100644
index 0000000..c8755e3
--- /dev/null
+++ b/.github/CONTRIBUTING.md
@@ -0,0 +1,22 @@
+## Contributing to Git
+
+Thanks for taking the time to contribute to Git! Please be advised that the
+Git community does not use github.com for their contributions. Instead, we use
+a mailing list (git@vger.kernel.org) for code submissions, code
+reviews, and bug reports.
+
+Nevertheless, you can use [GitGitGadget](https://gitgitgadget.github.io/) to
+conveniently send your Pull Requests commits to our mailing list.
+
+Please read ["A note from the maintainer"](https://git.kernel.org/pub/scm/git/git.git/plain/MaintNotes?h=todo)
+to learn how the Git project is managed, and how you can work with it.
+In addition, we highly recommend you to read [our submission guidelines](../Documentation/SubmittingPatches).
+
+If you prefer video, then [this talk](https://www.youtube.com/watch?v=Q7i_qQW__q4&feature=youtu.be&t=6m4s)
+might be useful to you as the presenter walks you through the contribution
+process by example.
+
+Or, you can follow the ["My First Contribution"](https://git-scm.com/docs/MyFirstContribution)
+tutorial for another example of the contribution process.
+
+Your friendly Git community!
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000..952c7c3
--- /dev/null
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,7 @@
+Thanks for taking the time to contribute to Git! Please be advised that the
+Git community does not use github.com for their contributions. Instead, we use
+a mailing list (git@vger.kernel.org) for code submissions, code reviews, and
+bug reports. Nevertheless, you can use GitGitGadget (https://gitgitgadget.github.io/)
+to conveniently send your Pull Requests commits to our mailing list.
+
+Please read the "guidelines for contributing" linked above!
diff --git a/.github/workflows/check-whitespace.yml b/.github/workflows/check-whitespace.yml
new file mode 100644
index 0000000..ad3466a
--- /dev/null
+++ b/.github/workflows/check-whitespace.yml
@@ -0,0 +1,50 @@
+name: check-whitespace
+
+# Get the repository with all commits to ensure that we can analyze
+# all of the commits contributed via the Pull Request.
+# Process `git log --check` output to extract just the check errors.
+# Exit with failure upon white-space issues.
+
+on:
+  pull_request:
+    types: [opened, synchronize]
+
+jobs:
+  check-whitespace:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+
+    - name: git log --check
+      id: check_out
+      run: |
+        log=
+        commit=
+        while read dash etc
+        do
+          case "${dash}" in
+          "---")
+            commit="${etc}"
+            ;;
+          "")
+            ;;
+          *)
+            if test -n "${commit}"
+            then
+              log="${log}\n${commit}"
+              echo ""
+              echo "--- ${commit}"
+            fi
+            commit=
+            log="${log}\n${dash} ${etc}"
+            echo "${dash} ${etc}"
+            ;;
+          esac
+        done <<< $(git log --check --pretty=format:"---% h% s" ${{github.event.pull_request.base.sha}}..)
+
+        if test -n "${log}"
+        then
+          exit 2
+        fi
diff --git a/.github/workflows/l10n.yml b/.github/workflows/l10n.yml
new file mode 100644
index 0000000..f7ea0f0
--- /dev/null
+++ b/.github/workflows/l10n.yml
@@ -0,0 +1,105 @@
+name: git-l10n
+
+on: [push, pull_request_target]
+
+jobs:
+  git-po-helper:
+    if: >-
+      endsWith(github.repository, '/git-po') ||
+      contains(github.head_ref, 'l10n') ||
+      contains(github.ref, 'l10n')
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      - name: Setup base and head objects
+        id: setup-tips
+        run: |
+          if test "${{ github.event_name }}" = "pull_request_target"
+          then
+            base=${{ github.event.pull_request.base.sha }}
+            head=${{ github.event.pull_request.head.sha }}
+          else
+            base=${{ github.event.before }}
+            head=${{ github.event.after }}
+          fi
+          echo base=$base >>$GITHUB_OUTPUT
+          echo head=$head >>$GITHUB_OUTPUT
+      - name: Run partial clone
+        run: |
+          git -c init.defaultBranch=master init --bare .
+          git remote add \
+            --mirror=fetch \
+            origin \
+            https://github.com/${{ github.repository }}
+          # Fetch tips that may be unreachable from github.ref:
+          # - For a forced push, "$base" may be unreachable.
+          # - For a "pull_request_target" event, "$head" may be unreachable.
+          args=
+          for commit in \
+            ${{ steps.setup-tips.outputs.base }} \
+            ${{ steps.setup-tips.outputs.head }}
+          do
+            case $commit in
+            *[^0]*)
+              args="$args $commit"
+              ;;
+            *)
+              # Should not fetch ZERO-OID.
+              ;;
+            esac
+          done
+          git -c protocol.version=2 fetch \
+            --progress \
+            --no-tags \
+            --no-write-fetch-head \
+            --filter=blob:none \
+            origin \
+            ${{ github.ref }} \
+            $args
+      - uses: actions/setup-go@v2
+        with:
+          go-version: '>=1.16'
+      - name: Install git-po-helper
+        run: go install github.com/git-l10n/git-po-helper@main
+      - name: Install other dependencies
+        run: |
+          sudo apt-get update -q &&
+          sudo apt-get install -q -y gettext
+      - name: Run git-po-helper
+        id: check-commits
+        run: |
+          exit_code=0
+          git-po-helper check-commits \
+            --github-action-event="${{ github.event_name }}" -- \
+            ${{ steps.setup-tips.outputs.base }}..${{ steps.setup-tips.outputs.head }} \
+            >git-po-helper.out 2>&1 || exit_code=$?
+          if test $exit_code -ne 0 || grep -q WARNING git-po-helper.out
+          then
+            # Remove ANSI colors which are proper for console logs but not
+            # proper for PR comment.
+            echo "COMMENT_BODY<<EOF" >>$GITHUB_ENV
+            perl -pe 's/\e\[[0-9;]*m//g; s/\bEOF$//g' git-po-helper.out >>$GITHUB_ENV
+            echo "EOF" >>$GITHUB_ENV
+          fi
+          cat git-po-helper.out
+          exit $exit_code
+      - name: Create comment in pull request for report
+        uses: mshick/add-pr-comment@v1
+        if: >-
+          always() &&
+          github.event_name == 'pull_request_target' &&
+          env.COMMENT_BODY != ''
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          repo-token-user-login: 'github-actions[bot]'
+          message: >
+            ${{ steps.check-commits.outcome == 'failure' && 'Errors and warnings' || 'Warnings' }}
+            found by [git-po-helper](https://github.com/git-l10n/git-po-helper#readme) in workflow
+            [#${{ github.run_number }}](${{ env.GITHUB_SERVER_URL }}/${{ github.repository }}/actions/runs/${{ github.run_id }}):
+
+            ```
+
+            ${{ env.COMMENT_BODY }}
+
+            ```
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..e67847a
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,356 @@
+name: CI
+
+on: [push, pull_request]
+
+env:
+  DEVELOPER: 1
+
+jobs:
+  ci-config:
+    name: config
+    runs-on: ubuntu-latest
+    outputs:
+      enabled: ${{ steps.check-ref.outputs.enabled }}${{ steps.skip-if-redundant.outputs.enabled }}
+    steps:
+      - name: try to clone ci-config branch
+        run: |
+          git -c protocol.version=2 clone \
+            --no-tags \
+            --single-branch \
+            -b ci-config \
+            --depth 1 \
+            --no-checkout \
+            --filter=blob:none \
+            https://github.com/${{ github.repository }} \
+            config-repo &&
+          cd config-repo &&
+          git checkout HEAD -- ci/config || : ignore
+      - id: check-ref
+        name: check whether CI is enabled for ref
+        run: |
+          enabled=yes
+          if test -x config-repo/ci/config/allow-ref &&
+             ! config-repo/ci/config/allow-ref '${{ github.ref }}'
+          then
+            enabled=no
+          fi
+          echo "enabled=$enabled" >>$GITHUB_OUTPUT
+      - name: skip if the commit or tree was already tested
+        id: skip-if-redundant
+        uses: actions/github-script@v6
+        if: steps.check-ref.outputs.enabled == 'yes'
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          script: |
+            try {
+              // Figure out workflow ID, commit and tree
+              const { data: run } = await github.rest.actions.getWorkflowRun({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                run_id: context.runId,
+              });
+              const workflow_id = run.workflow_id;
+              const head_sha = run.head_sha;
+              const tree_id = run.head_commit.tree_id;
+
+              // See whether there is a successful run for that commit or tree
+              const { data: runs } = await github.rest.actions.listWorkflowRuns({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                per_page: 500,
+                status: 'success',
+                workflow_id,
+              });
+              for (const run of runs.workflow_runs) {
+                if (head_sha === run.head_sha) {
+                  core.warning(`Successful run for the commit ${head_sha}: ${run.html_url}`);
+                  core.setOutput('enabled', ' but skip');
+                  break;
+                }
+                if (run.head_commit && tree_id === run.head_commit.tree_id) {
+                  core.warning(`Successful run for the tree ${tree_id}: ${run.html_url}`);
+                  core.setOutput('enabled', ' but skip');
+                  break;
+                }
+              }
+            } catch (e) {
+              core.warning(e);
+            }
+
+  windows-build:
+    name: win build
+    needs: ci-config
+    if: needs.ci-config.outputs.enabled == 'yes'
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: git-for-windows/setup-git-for-windows-sdk@v1
+    - name: build
+      shell: bash
+      env:
+        HOME: ${{runner.workspace}}
+        NO_PERL: 1
+      run: . /etc/profile && ci/make-test-artifacts.sh artifacts
+    - name: zip up tracked files
+      run: git archive -o artifacts/tracked.tar.gz HEAD
+    - name: upload tracked files and build artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: windows-artifacts
+        path: artifacts
+  windows-test:
+    name: win test
+    runs-on: windows-latest
+    needs: [windows-build]
+    strategy:
+      fail-fast: false
+      matrix:
+        nr: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    steps:
+    - name: download tracked files and build artifacts
+      uses: actions/download-artifact@v3
+      with:
+        name: windows-artifacts
+        path: ${{github.workspace}}
+    - name: extract tracked files and build artifacts
+      shell: bash
+      run: tar xf artifacts.tar.gz && tar xf tracked.tar.gz
+    - uses: git-for-windows/setup-git-for-windows-sdk@v1
+    - name: test
+      shell: bash
+      run: . /etc/profile && ci/run-test-slice.sh ${{matrix.nr}} 10
+    - name: print test failures
+      if: failure() && env.FAILED_TEST_ARTIFACTS != ''
+      shell: bash
+      run: ci/print-test-failures.sh
+    - name: Upload failed tests' directories
+      if: failure() && env.FAILED_TEST_ARTIFACTS != ''
+      uses: actions/upload-artifact@v3
+      with:
+        name: failed-tests-windows
+        path: ${{env.FAILED_TEST_ARTIFACTS}}
+  vs-build:
+    name: win+VS build
+    needs: ci-config
+    if: needs.ci-config.outputs.enabled == 'yes'
+    env:
+      NO_PERL: 1
+      GIT_CONFIG_PARAMETERS: "'user.name=CI' 'user.email=ci@git'"
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: git-for-windows/setup-git-for-windows-sdk@v1
+    - name: initialize vcpkg
+      uses: actions/checkout@v3
+      with:
+        repository: 'microsoft/vcpkg'
+        path: 'compat/vcbuild/vcpkg'
+    - name: download vcpkg artifacts
+      shell: powershell
+      run: |
+        $urlbase = "https://dev.azure.com/git/git/_apis/build/builds"
+        $id = ((Invoke-WebRequest -UseBasicParsing "${urlbase}?definitions=9&statusFilter=completed&resultFilter=succeeded&`$top=1").content | ConvertFrom-JSON).value[0].id
+        $downloadUrl = ((Invoke-WebRequest -UseBasicParsing "${urlbase}/$id/artifacts").content | ConvertFrom-JSON).value[0].resource.downloadUrl
+        (New-Object Net.WebClient).DownloadFile($downloadUrl, "compat.zip")
+        Expand-Archive compat.zip -DestinationPath . -Force
+        Remove-Item compat.zip
+    - name: add msbuild to PATH
+      uses: microsoft/setup-msbuild@v1
+    - name: copy dlls to root
+      shell: cmd
+      run: compat\vcbuild\vcpkg_copy_dlls.bat release
+    - name: generate Visual Studio solution
+      shell: bash
+      run: |
+        cmake `pwd`/contrib/buildsystems/ -DCMAKE_PREFIX_PATH=`pwd`/compat/vcbuild/vcpkg/installed/x64-windows \
+        -DNO_GETTEXT=YesPlease -DPERL_TESTS=OFF -DPYTHON_TESTS=OFF -DCURL_NO_CURL_CMAKE=ON
+    - name: MSBuild
+      run: msbuild git.sln -property:Configuration=Release -property:Platform=x64 -maxCpuCount:4 -property:PlatformToolset=v142
+    - name: bundle artifact tar
+      shell: bash
+      env:
+        MSVC: 1
+        VCPKG_ROOT: ${{github.workspace}}\compat\vcbuild\vcpkg
+      run: |
+        mkdir -p artifacts &&
+        eval "$(make -n artifacts-tar INCLUDE_DLLS_IN_ARTIFACTS=YesPlease ARTIFACTS_DIRECTORY=artifacts NO_GETTEXT=YesPlease 2>&1 | grep ^tar)"
+    - name: zip up tracked files
+      run: git archive -o artifacts/tracked.tar.gz HEAD
+    - name: upload tracked files and build artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: vs-artifacts
+        path: artifacts
+  vs-test:
+    name: win+VS test
+    runs-on: windows-latest
+    needs: vs-build
+    strategy:
+      fail-fast: false
+      matrix:
+        nr: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    steps:
+    - uses: git-for-windows/setup-git-for-windows-sdk@v1
+    - name: download tracked files and build artifacts
+      uses: actions/download-artifact@v3
+      with:
+        name: vs-artifacts
+        path: ${{github.workspace}}
+    - name: extract tracked files and build artifacts
+      shell: bash
+      run: tar xf artifacts.tar.gz && tar xf tracked.tar.gz
+    - name: test
+      shell: bash
+      env:
+        NO_SVN_TESTS: 1
+      run: . /etc/profile && ci/run-test-slice.sh ${{matrix.nr}} 10
+    - name: print test failures
+      if: failure() && env.FAILED_TEST_ARTIFACTS != ''
+      shell: bash
+      run: ci/print-test-failures.sh
+    - name: Upload failed tests' directories
+      if: failure() && env.FAILED_TEST_ARTIFACTS != ''
+      uses: actions/upload-artifact@v3
+      with:
+        name: failed-tests-windows
+        path: ${{env.FAILED_TEST_ARTIFACTS}}
+  regular:
+    name: ${{matrix.vector.jobname}} (${{matrix.vector.pool}})
+    needs: ci-config
+    if: needs.ci-config.outputs.enabled == 'yes'
+    strategy:
+      fail-fast: false
+      matrix:
+        vector:
+          - jobname: linux-clang
+            cc: clang
+            pool: ubuntu-latest
+          - jobname: linux-sha256
+            cc: clang
+            pool: ubuntu-latest
+          - jobname: linux-gcc
+            cc: gcc
+            cc_package: gcc-8
+            pool: ubuntu-20.04
+          - jobname: linux-TEST-vars
+            cc: gcc
+            cc_package: gcc-8
+            pool: ubuntu-20.04
+          - jobname: osx-clang
+            cc: clang
+            pool: macos-12
+          - jobname: osx-gcc
+            cc: gcc
+            cc_package: gcc-9
+            pool: macos-12
+          - jobname: linux-gcc-default
+            cc: gcc
+            pool: ubuntu-latest
+          - jobname: linux-leaks
+            cc: gcc
+            pool: ubuntu-latest
+          - jobname: linux-asan
+            cc: gcc
+            pool: ubuntu-latest
+          - jobname: linux-ubsan
+            cc: gcc
+            pool: ubuntu-latest
+    env:
+      CC: ${{matrix.vector.cc}}
+      CC_PACKAGE: ${{matrix.vector.cc_package}}
+      jobname: ${{matrix.vector.jobname}}
+      runs_on_pool: ${{matrix.vector.pool}}
+    runs-on: ${{matrix.vector.pool}}
+    steps:
+    - uses: actions/checkout@v3
+    - run: ci/install-dependencies.sh
+    - run: ci/run-build-and-tests.sh
+    - run: ci/print-test-failures.sh
+      if: failure() && env.FAILED_TEST_ARTIFACTS != ''
+    - name: Upload failed tests' directories
+      if: failure() && env.FAILED_TEST_ARTIFACTS != ''
+      uses: actions/upload-artifact@v3
+      with:
+        name: failed-tests-${{matrix.vector.jobname}}
+        path: ${{env.FAILED_TEST_ARTIFACTS}}
+  dockerized:
+    name: ${{matrix.vector.jobname}} (${{matrix.vector.image}})
+    needs: ci-config
+    if: needs.ci-config.outputs.enabled == 'yes'
+    strategy:
+      fail-fast: false
+      matrix:
+        vector:
+        - jobname: linux-musl
+          image: alpine
+        - jobname: linux32
+          image: daald/ubuntu32:xenial
+        - jobname: pedantic
+          image: fedora
+    env:
+      jobname: ${{matrix.vector.jobname}}
+    runs-on: ubuntu-latest
+    container: ${{matrix.vector.image}}
+    steps:
+    - uses: actions/checkout@v3
+      if: matrix.vector.jobname != 'linux32'
+    - uses: actions/checkout@v1
+      if: matrix.vector.jobname == 'linux32'
+    - run: ci/install-docker-dependencies.sh
+    - run: ci/run-build-and-tests.sh
+    - run: ci/print-test-failures.sh
+      if: failure() && env.FAILED_TEST_ARTIFACTS != ''
+    - name: Upload failed tests' directories
+      if: failure() && env.FAILED_TEST_ARTIFACTS != '' && matrix.vector.jobname != 'linux32'
+      uses: actions/upload-artifact@v3
+      with:
+        name: failed-tests-${{matrix.vector.jobname}}
+        path: ${{env.FAILED_TEST_ARTIFACTS}}
+    - name: Upload failed tests' directories
+      if: failure() && env.FAILED_TEST_ARTIFACTS != '' && matrix.vector.jobname == 'linux32'
+      uses: actions/upload-artifact@v1
+      with:
+        name: failed-tests-${{matrix.vector.jobname}}
+        path: ${{env.FAILED_TEST_ARTIFACTS}}
+  static-analysis:
+    needs: ci-config
+    if: needs.ci-config.outputs.enabled == 'yes'
+    env:
+      jobname: StaticAnalysis
+    runs-on: ubuntu-22.04
+    steps:
+    - uses: actions/checkout@v3
+    - run: ci/install-dependencies.sh
+    - run: ci/run-static-analysis.sh
+    - run: ci/check-directional-formatting.bash
+  sparse:
+    needs: ci-config
+    if: needs.ci-config.outputs.enabled == 'yes'
+    env:
+      jobname: sparse
+    runs-on: ubuntu-20.04
+    steps:
+    - name: Download a current `sparse` package
+      # Ubuntu's `sparse` version is too old for us
+      uses: git-for-windows/get-azure-pipelines-artifact@v0
+      with:
+        repository: git/git
+        definitionId: 10
+        artifact: sparse-20.04
+    - name: Install the current `sparse` package
+      run: sudo dpkg -i sparse-20.04/sparse_*.deb
+    - uses: actions/checkout@v3
+    - name: Install other dependencies
+      run: ci/install-dependencies.sh
+    - run: make sparse
+  documentation:
+    name: documentation
+    needs: ci-config
+    if: needs.ci-config.outputs.enabled == 'yes'
+    env:
+      jobname: Documentation
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - run: ci/install-dependencies.sh
+    - run: ci/test-documentation.sh