Always echo matrix output

Author: tangrufus

action.yml

@@ -159,3 +159,14 @@ runs:
         cat matrix
         echo "::$stopMarker::"
       shell: bash
+
+    - name: Disable workflow commands
+      if: ${{ !cancelled() }}
+      run: |
+        echo '::warning:: This is a warning message, to demonstrate that commands are being processed.'
+        stopMarker=$(uuidgen)
+        echo "::stop-commands::$stopMarker"
+        echo '::warning:: This will NOT be rendered as a warning, because stop-commands has been invoked.'
+        echo "::$stopMarker::"
+        echo '::warning:: This is a warning again, because stop-commands has been turned off.'
+      shell: bash