From c284d4c6b1db95d2374ceb96997c53af4a98ef7d Mon Sep 17 00:00:00 2001
From: Mike Farah <mikefarah@gmail.com>
Date: Fri, 5 Feb 2021 09:49:40 +1100
Subject: [PATCH] Equals now only compares scalars

---
 pkg/yqlib/operator_equals.go      | 4 +++-
 pkg/yqlib/operator_equals_test.go | 8 ++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/pkg/yqlib/operator_equals.go b/pkg/yqlib/operator_equals.go
index 2882c31..5c6d959 100644
--- a/pkg/yqlib/operator_equals.go
+++ b/pkg/yqlib/operator_equals.go
@@ -1,5 +1,7 @@
 package yqlib
 
+import "gopkg.in/yaml.v3"
+
 func equalsOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
 	log.Debugf("-- equalsOperation")
 	return crossFunction(d, context, expressionNode, isEquals)
@@ -13,7 +15,7 @@ func isEquals(d *dataTreeNavigator, context Context, lhs *CandidateNode, rhs *Ca
 
 	if lhsNode.Tag == "!!null" {
 		value = (rhsNode.Tag == "!!null")
-	} else {
+	} else if lhsNode.Kind == yaml.ScalarNode && rhsNode.Kind == yaml.ScalarNode {
 		value = matchKey(lhsNode.Value, rhsNode.Value)
 	}
 	log.Debugf("%v == %v ? %v", NodeToString(lhs), NodeToString(rhs), value)
diff --git a/pkg/yqlib/operator_equals_test.go b/pkg/yqlib/operator_equals_test.go
index 2dfa20d..822c031 100644
--- a/pkg/yqlib/operator_equals_test.go
+++ b/pkg/yqlib/operator_equals_test.go
@@ -14,6 +14,14 @@ var equalsOperatorScenarios = []expressionScenario{
 			"D0, P[], (!!bool)::false\n",
 		},
 	},
+	{
+		skipDoc:    true,
+		document:   "{a: { b: {things: \"\"}, f: [1], g: [] }}",
+		expression: ".. | select(. == \"\")",
+		expected: []string{
+			"D0, P[a b things], (!!str)::\"\"\n",
+		},
+	},
 	{
 		description: "Match string",
 		document:    `[cat,goat,dog]`,