Lint workflows as well.

Author: desrosj

.github/workflows/list-changed-files.yml

@@ -62,9 +62,16 @@ jobs:
       - name: Generate file list
         env:
           PATTERN: ${{ matrix.pattern }}
+          DESCRIPTION: ${{ matrix.description }}
           NEW_TAG: ${{ matrix.new_tag }}
           OLD_TAG: ${{ matrix.old_tag }}
-        run: echo "$(git diff --name-status $OLD_TAG...$NEW_TAG | grep -E '^($PATTERN)' | cut -c3-)" >> $GITHUB_STEP_SUMMARY
+        run: |
+          DIFF_OUTPUT=$(git diff --name-status $OLD_TAG...$NEW_TAG | grep -E "^($PATTERN)" | cut -c3-)
+          if [ -n "$DIFF_OUTPUT" ]; then
+            echo "$DIFF_OUTPUT" >> $GITHUB_STEP_SUMMARY
+          else
+            echo "No files $DESCRIPTION found" >> $GITHUB_STEP_SUMMARY
+          fi
 
   slack-notifications:
     name: Slack Notifications

.github/workflows/workflow-lint.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - trunk
+      - 'add/changed-files-on-tag'
       - '6.[8-9]'
       - '[7-9].[0-9]'
     paths: