From 864a85aadadbaa4dce1e474714457ed37c553ce1 Mon Sep 17 00:00:00 2001
From: "alex.lew" <alex.lew@observeinc.com>
Date: Mon, 22 Jul 2024 20:14:28 +0000
Subject: [PATCH] feat: copy keydelim from parent chart in viper.Sub()

---
 viper.go      |  1 +
 viper_test.go | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/viper.go b/viper.go
index 29f454f..754eb5a 100644
--- a/viper.go
+++ b/viper.go
@@ -774,6 +774,7 @@ func (v *Viper) Sub(key string) *Viper {
 		subv.automaticEnvApplied = v.automaticEnvApplied
 		subv.envPrefix = v.envPrefix
 		subv.envKeyReplacer = v.envKeyReplacer
+		subv.keyDelim = v.keyDelim
 		subv.config = cast.ToStringMap(data)
 		return subv
 	}
diff --git a/viper_test.go b/viper_test.go
index 1419113..2eab0ea 100644
--- a/viper_test.go
+++ b/viper_test.go
@@ -1681,6 +1681,17 @@ func TestSub(t *testing.T) {
 	assert.Equal(t, []string{"clothing", "pants"}, subv.parents)
 }
 
+func TestSubWithKeyDelimiter(t *testing.T) {
+	v := NewWithOptions(KeyDelimiter("::"))
+	v.SetConfigType("yaml")
+	r := strings.NewReader(string(yamlExampleWithDot))
+	err := v.unmarshalReader(r, v.config)
+	require.NoError(t, err)
+
+	subv := v.Sub("emails")
+	assert.Equal(t, "01/02/03", subv.Get("steve@hacker.com::created"))
+}
+
 var jsonWriteExpected = []byte(`{
   "batters": {
     "batter": [