From e58c7128b056fb3c704a4d8e4b3522e097c2df3e Mon Sep 17 00:00:00 2001
From: Tw93 <tw93@qq.com>
Date: Sun, 11 Jan 2026 09:58:37 +0800
Subject: [PATCH] fix: resolve unbound variable error in safe_clean (bash 3.2
 compatibility)

---
 bin/clean.sh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/bin/clean.sh b/bin/clean.sh
index a5146b9..2de8f28 100755
--- a/bin/clean.sh
+++ b/bin/clean.sh
@@ -342,7 +342,11 @@ safe_clean() {
         valid_targets+=("$target")
     done
 
-    targets=("${valid_targets[@]}")
+    if [[ ${#valid_targets[@]} -gt 0 ]]; then
+        targets=("${valid_targets[@]}")
+    else
+        targets=()
+    fi
     if [[ ${#targets[@]} -eq 0 ]]; then
         return 0
     fi