Hi Gerd
I've noticed that log.isLoggable(Level.WARNING) always returns true when I don't use the -Dconfig.logging option for JRE . This is unexpected as calls to log.warn(...) don't produce any output in this case.
The attached simple patch seems to fix this but I don't really understand the code. Maybe you forgot this change in http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=233 ?
Yes that sounds right, the level should be set to SEVERE
In class MultiPolygonRelation we have quite a lot of methods which is meant to be skipped if logging is not enabled but because of this bug(?) the code is executed sometimes, maybe with side effects that I don't yet fully understand.
There shouldn't be any extra side effects, but it may be a little quicker. Steve