Only commit changes

Author: fwcd

.github/workflows/dist.yml

@@ -26,7 +26,8 @@ jobs:
         git config --global user.email "github-actions[bot]@users.noreply.github.com"
     - name: Commit generated code
       run: |
-        git add .
-        git commit -m "Update generated dist ($(git rev-parse --short HEAD))"
-        git push
-
+        if ! git diff --exit-code --quiet; then
+          git add .
+          git commit -m "Update generated dist ($(git rev-parse --short HEAD))"
+          git push
+        fi