Revision 13861: 33_readingsProxy.pm: fixed check for ''. see forum ...
33_readingsProxy.pm: fixed check for . see forum ​https://forum.fhem.de/index.php/topic,69851.0/topicseen.html
Source: Revision 13861: 33_readingsProxy.pm: fixed check for ''. see forum ... (http://svn.fhem.de/trac/changeset/13861/trunk)