From bf5b8050c45a4b7d9f50f7030a3d4b73ef8630fc Mon Sep 17 00:00:00 2001
From: Jimmy Zelinskie <jimmy@zelinskie.com>
Date: Tue, 27 Jan 2026 14:56:40 -0800
Subject: [PATCH] fix: strip prefixes w/ empty backup replacement

---
 pkg/backupformat/rewriter.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkg/backupformat/rewriter.go b/pkg/backupformat/rewriter.go
index cfeb05d1..02c4d8b6 100644
--- a/pkg/backupformat/rewriter.go
+++ b/pkg/backupformat/rewriter.go
@@ -184,6 +184,9 @@ type PrefixReplacer struct {
 func (pr *PrefixReplacer) replaceName(name string) string {
 	prefix, prefixlessName, prefixExists := strings.Cut(name, "/")
 	if newPrefix, ok := pr.replacements[prefix]; prefixExists && ok {
+		if newPrefix == "" {
+			return prefixlessName
+		}
 		return newPrefix + "/" + prefixlessName
 	}
 	return name