From 5259c1c6a7122067b03f7c4a0cf5be08c8010efe Mon Sep 17 00:00:00 2001
From: William Floyd <william.floyd@modopayments.com>
Date: Wed, 13 May 2026 09:36:06 -0700
Subject: [PATCH] Test for https://github.com/mikefarah/yq/issues/2677

---
 pkg/yqlib/operator_anchors_aliases_test.go | 44 ++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/pkg/yqlib/operator_anchors_aliases_test.go b/pkg/yqlib/operator_anchors_aliases_test.go
index ef54c478..d1ca5e6d 100644
--- a/pkg/yqlib/operator_anchors_aliases_test.go
+++ b/pkg/yqlib/operator_anchors_aliases_test.go
@@ -288,7 +288,51 @@ var badAnchorOperatorScenarios = []expressionScenario{
 	},
 }
 
+var mixedMergeTagStyleDocument = `
+constants:
+    errorResponse: &errorResponse
+        status: 200
+endpoints:
+    - condition: true
+      !!merge <<: *errorResponse
+    - condition: false
+      <<: *errorResponse
+other:
+    !!merge <<: *errorResponse
+somethingElse:
+    <<: *errorResponse
+`
+
+var mixedMergeTagStyleExplodedDocument = `
+constants:
+    errorResponse:
+        status: 200
+endpoints:
+    - condition: true
+      status: 200
+    - condition: false
+      status: 200
+other:
+    status: 200
+somethingElse:
+    status: 200
+`
+
 var anchorOperatorScenarios = []expressionScenario{
+	{
+		skipDoc:     true,
+		description: "explicit !!merge tag on << key is preserved through ireduce merge",
+		document:    mixedMergeTagStyleDocument,
+		expression:  `. as $item ireduce ({}; . *+ $item)`,
+		expected:    []string{"D0, P[], (!!map)::" + mixedMergeTagStyleDocument},
+	},
+	{
+		skipDoc:     true,
+		description: "explode expands << merge keys regardless of explicit tag style (!!merge or plain)",
+		document:    mixedMergeTagStyleDocument,
+		expression:  `explode(.)`,
+		expected:    []string{"D0, P[], (!!map)::" + mixedMergeTagStyleExplodedDocument},
+	},
 	{
 		skipDoc:     true,
 		description: "merge anchor to alias alias",