From 5c37babcec5f63a2679310a5917160b8e528683e Mon Sep 17 00:00:00 2001
From: Kailash Nadh <kailash@nadh.in>
Date: Wed, 3 Apr 2024 12:46:15 +0530
Subject: [PATCH] Fix map unflattening no-delimiter behaviour (#278). Closes
 #275.

---
 maps/maps.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/maps/maps.go b/maps/maps.go
index 0a409f9a..bdb9d62b 100644
--- a/maps/maps.go
+++ b/maps/maps.go
@@ -74,10 +74,16 @@ func Unflatten(m map[string]interface{}, delim string) map[string]interface{} {
 	// Iterate through the flat conf map.
 	for k, v := range m {
 		var (
-			keys = strings.Split(k, delim)
+			keys []string
 			next = out
 		)
 
+		if delim != "" {
+			keys = strings.Split(k, delim)
+		} else {
+			keys = []string{k}
+		}
+
 		// Iterate through key parts, for eg:, parent.child.key
 		// will be ["parent", "child", "key"]
 		for _, k := range keys[:len(keys)-1] {