Hi Emilio, thank you very much, no need to be sorry. This helps a lot, at least for debian and derivatives. I'm sorry for all the other distributions, bad luck - but now i can argue with the XDG guys that we in debian and ubuntu think that the solution is sane, it might help to get it merged upstream. (And save a lot of nerves in LXQt upstream - no more new bugs about this :) )
Cheers Alf