From ebdddf9fa7166f0dde407b850480c5ea12f47708 Mon Sep 17 00:00:00 2001
From: Zhong Jianxin <azuwis@gmail.com>
Date: Wed, 11 Apr 2018 15:40:12 +0800
Subject: [PATCH] dns_dynu: Fix egrep regexp

Tested with busybox 1.28.3 in OpenWrt:

    # echo '{abc}' | egrep -o "{[^{]*}"
    egrep: bad regex '{[^{]*}': Repetition not preceded by valid expression
    # echo '{abc}' | egrep -o "\{[^{]*\}"
    {abc}
---
 dnsapi/dns_dynu.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dnsapi/dns_dynu.sh b/dnsapi/dns_dynu.sh
index 17a1cdb0..87fc2805 100644
--- a/dnsapi/dns_dynu.sh
+++ b/dnsapi/dns_dynu.sh
@@ -161,7 +161,7 @@ _get_recordid() {
     return 0
   fi
 
-  _dns_record_id=$(printf "%s" "$response" | _egrep_o "{[^}]*}" | grep "\"text_data\":\"$txtvalue\"" | _egrep_o ",[^,]*," | grep ',"id":' | tr -d ",," | cut -d : -f 2)
+  _dns_record_id=$(printf "%s" "$response" | _egrep_o "\{[^}]*\}" | grep "\"text_data\":\"$txtvalue\"" | _egrep_o ",[^,]*," | grep ',"id":' | tr -d ",," | cut -d : -f 2)
 
   return 0
 }