Originally Posted by vlad59
As stated in the README, COPS support opensearch (the standard way of doing search with opds feeds). It's working fine with Mantano (and Bluefire or Megareader if I remind correctly).
But many OPDS reader don't support correctly opensearch so I've added an invalid way (config item cops_generate_invalid_opds_stream) to make it work with Moon+Reader or FBReaderJ and certainly many other.
Excellent info, I missed this last time reading through the README. I'm a little familiar with the FBReaderJ source code, maybe I can push a change to their GitHub stream if there is a simple bug fix.