Add a comment when merging

.mergify.yml

@@ -1,4 +1,20 @@
 pull_request_rules:
+  - name: Merge owner PR when all checks passed
+    conditions:
+      - author=puremourning
+      - base=master
+      - status-success=code-review/reviewable
+      - status-success=puremourning.vimspector # Azure pipeline
+
+      - "#review-requested=0"
+      - "#changes-requested-reviews-by=0"
+
+    actions: &merge-actions
+      merge:
+        method: merge
+        strict: smart
+      delete_head_branch: {}
+
   - name: Merge PR when all checks passed
     conditions:
       - author!=puremourning
@@ -10,23 +26,7 @@ pull_request_rules:
       - "#approved-reviews-by>=1"
       - "#review-requested=0"
       - "#changes-requested-reviews-by=0"
-
     actions:
-      merge:
-        method: merge
-        strict: smart
-
-  - name: Merge owner PR when all checks passed
-    conditions:
-      - author=puremourning
-      - base=master
-      - status-success=code-review/reviewable
-      - status-success=puremourning.vimspector # Azure pipeline
-
-      - "#review-requested=0"
-      - "#changes-requested-reviews-by=0"
-
-    actions:
-      merge:
-        method: merge
-        strict: smart
+      <<: *merge-actions
+      comment:
+        message: Thanks for sending a PR!