From dd2590962402318aee4a3cc3f0900b733fdee70f Mon Sep 17 00:00:00 2001
From: rudolfkoenig <>
Date: Sat, 19 Dec 2020 11:40:59 +0000
Subject: [PATCH] 10_MQTT2_DEVICE.pm: do not optimize topics with \ or Umlaut
 (Forum #116706)

git-svn-id: https://svn.fhem.de/fhem/trunk@23382 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/10_MQTT2_DEVICE.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fhem/FHEM/10_MQTT2_DEVICE.pm b/fhem/FHEM/10_MQTT2_DEVICE.pm
index 234c032b6..dd17a2b82 100644
--- a/fhem/FHEM/10_MQTT2_DEVICE.pm
+++ b/fhem/FHEM/10_MQTT2_DEVICE.pm
@@ -611,7 +611,7 @@ MQTT2_DEVICE_addReading($$)
 
     $re =~ s/\$DEVICETOPIC/$dt/g;
     if($cid && $re =~ m/^$cid:/) {
-      if($re =~ m/^$cid:([^\?.*\[\](|)]+):\.\*$/) { # cid:topic:.*
+      if($re =~ m/^$cid:([^\\\?.*\[\](|)]+):\.\*$/) { # cid:topic:.*
         $modules{MQTT2_DEVICE}{defptr}{"re:$cid:$1"}{$re}{"$name,$code"} = 1;
       } else {
         $modules{MQTT2_DEVICE}{defptr}{"re:$cid"}{$re}{"$name,$code"} = 1;