#2378: ci: post comment with clang-format output

Author: cz4rs

.github/workflows/run-clang-format.yml

@@ -11,6 +11,18 @@ jobs:
         with:
           fetch-depth: 0
           ref: ${{ github.event.pull_request.head.sha }}
+      - name: Fetch base_ref HEAD
+        run: git fetch --depth=1 origin +refs/heads/${{ github.base_ref }}:refs/remotes/origin/${{ github.base_ref }}
       - name: Run clang-format
-        shell: bash
-        run: git clang-format-16 --diff ${{ github.base_ref }}
+        run: |
+          echo "clang_format_diff=$(git clang-format-16 --diff ${{ github.base_ref }})" >> $GITHUB_OUTPUT
+        id: run_clang_format
+      - uses: actions/github-script@v7
+        with:
+          script: |
+            octokit.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: ${{ steps.run_clang_format.outputs.clang_format_diff }}
+            })