Syndicated Photos library

[RhetTbull]

In doing some debugging for another issue today I discovered a "hidden" Photos library at ~/Library/Photos/Libraries/Syndication.photoslibrary. This appears to include all the photos that are "syndicated" which appears to mean "shared with you via Messages or another app". OSXPhotos already reads syndicated photos in the main library but I was unaware there was an entire separate library maintained by the system. OSXPhotos can of course read this library. Haven't had time to poke around too much but this might be of interest to some OSXPhotos users. There are also privacy implications with this as any photo shared in a message appears to be in here.