All, In 15.4 beta, I had a number of .xz files and by chance I clicked one -- bingo, automatically opened and ready to navigate in tree-mode just like .gz, .bz2, .zip, etc.. Whoever applied or wrote the patch -- my hat is off to you. Cherry picking from TDE had been on my to-do since 42.3 and it is was quite a treat to see it was already done! KDE3 konqueror --profile file-management is by far the best file-manager ever devised. (totally borked in KDE4 and I wrote 4+ bugs against it in Plasma, and in Plasma it still doesn't work nearly as good as it does in KDE3. Still the best desktop available. -- David C. Rankin, J.D.,P.E.