I've been playing with this snippet in order to rename some files inside folders. I have a folder with other folders inside which I would like to rename from somename.nfo to foldername.release.

Folderstructure is like this:
complete/La.Haine.1995.1080p.BluRay.DTS.x264-DON/lh-don.mkv
complete/La.Haine.1995.1080p.BluRay.DTS.x264-DON/lh-don.nfo

and would like to automagically rename it to this:

complete/La.Haine.1995.1080p.BluRay.DTS.x264-DON/La.Haine.1995.1080p.BluRay.DTS.x264-DON.mkv
complete/La.Haine.1995.1080p.BluRay.DTS.x264-DON/La.Haine.1995.1080p.BluRay.DTS.x264-DON.release

All guidance is welcome :-)