From 37b5203e189a8085d815872bccb7df67147a3cf3 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Sun, 23 Nov 2014 19:43:56 +0100
Subject: [PATCH] jshn: only keep UP_* variables around while they are needed

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
 sh/jshn.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sh/jshn.sh b/sh/jshn.sh
index f5cf1d2..78414f0 100644
--- a/sh/jshn.sh
+++ b/sh/jshn.sh
@@ -92,6 +92,7 @@ _json_close_table() {
 
 	_json_get_var _s_cur JSON_CUR
 	_json_get_var "${JSON_PREFIX}JSON_CUR" "UP_$_s_cur"
+	unset "${JSON_PREFIX}UP_$_s_cur"
 }
 
 json_set_namespace() {
@@ -258,6 +259,7 @@ json_select() {
 	[[ "$1" == ".." ]] && {
 		_json_get_var cur JSON_CUR
 		_json_get_var cur "UP_$cur"
+		unset "${JSON_PREFIX}UP_$cur"
 		_json_set_var JSON_CUR "$cur"
 		return 0
 	}
@@ -265,6 +267,7 @@ json_select() {
 	case "$type" in
 		object|array)
 			json_get_var cur "$target"
+			_json_get_var "${JSON_PREFIX}UP_$cur" JSON_CUR
 			_json_set_var JSON_CUR "$cur"
 		;;
 		*)