From ec82365eff2ccf947c6b97e591a65cdb18a8399b Mon Sep 17 00:00:00 2001
From: herrmannj <herrmannj@2b470e98-0d58-463d-a4d8-8e2adae1ed80>
Date: Sun, 18 Oct 2020 13:26:05 +0000
Subject: [PATCH] 98_JsonMod.pm: filter parser, bugfix if filtertext contains
 letter 0

git-svn-id: https://svn.fhem.de/fhem/trunk@22987 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/98_JsonMod.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fhem/FHEM/98_JsonMod.pm b/fhem/FHEM/98_JsonMod.pm
index f4cf2a662..10c79e496 100644
--- a/fhem/FHEM/98_JsonMod.pm
+++ b/fhem/FHEM/98_JsonMod.pm
@@ -1365,7 +1365,7 @@ sub get {
 	my $rex = join('|', @operators);
 	$rex = qr/^($rex)/;
 
-	while (my $c = substr($filter, 0, 1)) {
+	while (defined(my $c = substr($filter, 0, 1))) {
 		if ($c eq q{'}) {
 			$delim ^= 1;
 			#substr($filter, 0, 1, '');