I completely understand, an it certainly would be very complex. Thanks for considering, and for your reply.
Quick question: Do you think (or know) if there is a way of using Windows own search feature, which indexes context, as a service that you can call on from Listary? If that is the case, it would be just a matter of integration into Listary's minimalistic UI, which is one of its most attractive features. Windows search's UI, on the other hand, is terrible...
I know that "just a matter of integration" means really a lot of work, so I am not overlooking all the effort, just that, conceptually, it would be integration, rather than developing indexing features from scratch.
Again, thanks for your reply, and for the good work you are doing with Listary. It certainly makes me more efficient on my PC.