Yes, I used to be able to crank out complex regex without thinking twice about it, but these days, I need to head-scratch about it.
My Nikon RAW files are all something like mydog.NEF. To ignore them, this ignore pattern should do the trick (adding to the files that are already ignored):
\..*|.*\.NEF
ETA: That does cause jAlbum to ignore the NEF files when building the album, but they still show in the
Explore view. If you refresh the display (F5), the NEF's are excluded, but still visible.
I think I would prefer to have jAlbum handle this differently....
ETA: It gets stranger. If you add both
mydog.JPG and
mydog.NEF, the NEF is excluded, but remains visible. If you add
only mydog.NEF, without its related JPG file, it finally does disappear from the
Explore view after you refresh the display.