From 8787ca55b32df7c1f865fa64783b88a03c3abfd8 Mon Sep 17 00:00:00 2001
From: Koichi Murase <myoga.murase@gmail.com>
Date: Sun, 12 Mar 2023 20:10:03 +0900
Subject: [PATCH] util (restore-vars): work around "set -u" [lib: add
 "util.bgproc" for "ble/util/bgproc"]

---
 src/util.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/util.sh b/src/util.sh
index 4ef39615..d0508d99 100644
--- a/src/util.sh
+++ b/src/util.sh
@@ -197,11 +197,11 @@ function ble/util/save-arrs {
 }
 function ble/util/restore-vars {
   local __name __prefix=$1; shift
-  for __name; do eval "$__name=\"\$$__prefix$__name\""; done
+  for __name; do eval "$__name=\"\${$__prefix$__name-}\""; done
 }
 function ble/util/restore-arrs {
   local __name __prefix=$1; shift
-  for __name; do eval "$__name=(\"\${$__prefix$__name[@]}\")"; done
+  for __name; do eval "$__name=(\${$__prefix$__name[@]+\"\${$__prefix$__name[@]}\"})"; done
 }
 
 #%if !release