Merge branch 'master' into split2089-workflow-docs-artifact

.github/workflows/snapshot-on-push-master.yml

@@ -29,6 +29,10 @@ jobs:
       - name: Build app (release)
         run: msbuild src\cc65.sln -t:rebuild -property:Configuration=Release
 
+      # The regression tests are currently too slow to run for this Windows build,
+      # but the "Windows Test Manual" workflow (windows-test-manual.yml) can by
+      # manually dispatched from the Actions menu to test as needed.
+
   build_linux:
     name: Build, Test, and Snapshot (Linux)
     if: github.repository == 'cc65/cc65'
@@ -115,9 +119,8 @@ jobs:
           git config push.default simple
           git add -A
           # prevent failure when there is nothing to commit
-          if git commit -m "Updated from https://github.com/cc65/cc65/commit/${GITHUB_SHA}" ; then
-            git push
-          fi
+          git diff-index --quiet HEAD || git commit -m "Updated from https://github.com/cc65/cc65/commit/${GITHUB_SHA}"
+          git push
       - name: Package offline documents.
         run: 7z a cc65-snapshot-docs.zip ./html/*.*
       - name: Upload a Documents Snapshot Zip