fhem.pl: allow . in userReadings (Forum #27442)

git-svn-id: https://svn.fhem.de/fhem/trunk@6633 2b470e98-0d58-463d-a4d8-8e2adae1ed80

fhem/fhem.pl

@@ -2232,7 +2232,7 @@ CommandAttr($$)
       my $arg= $a[2];
 
       # matches myReading1[:trigger2] { codecode1 }
-      my $regexi= '\s*([\w-]+)(:\S*)?\s+((\w+)\s+)?({.*?})\s*';
+      my $regexi= '\s*([\w-\.]+)(:\S*)?\s+((\w+)\s+)?({.*?})\s*';
       my $regexo= '^(' . $regexi . ')(,\s*(.*))*$';
 
       #Log 1, "arg is $arg";