[Shotwell] reset shotwell and library to pristine state

[Gary Shears <garys gmx net>]

Hi all,

After a failed attempt to move my library to a larger hard drive (it 
apparently didn't update the paths to edited photos), and several 
attempts to change my workflow by enabling the 'watch library' option I 
now have a library directory with extra shotwell generated images i.e. 
those with _shotwell in the name. I also have extra images with 
'CR2_embedded' in the filename.

What I want to do is remove all images except CR2's, and camera 
generated jpg's. So, what I need to know is the naming convention that 
shotwell uses when generating new images. I assume the _shotwell photos 
are such. Are 'CR2_embedded' jpgs also generated by shotwell? I have up 
to 3 copies of these from the same cr2 image (from different 
failed/interrupted imports). I want my library to look like it's never 
seen shotwell before.

(My goal is to change my workflow. I want to use Rapid Photo Downloader 
for imports (it's much quicker than Shotwell, and doesn't hog my 
processor, although Shotwell has gotten better here), Shotwell for tag 
management and quick edits and Darktable for more extensive edits.)

Any help is appreciated.

Gary