Sometimes I prefer using Eaglefiler for searching files instead of DEVONthink as the files / folders are in standard, easily accessible formats instead of being embedded in the database structure.
However, I do not like importing into Eaglefiler library as it seems to duplicate the files .
According to Michael Tsai, it does not take up additional space due to the APFS filing system
If you’re using macOS 10.13 or later, even if you opt to “copy” it won’t use double the space. EagleFiler will use APFS file cloning to make sure that the blocks on disk are shared between the two copies of the files
Even this is true, I still prefer to point the Eaglefiler library to the existing folders. I finally found a way to do that, as described in this forum discusssion. The trick is to create a folder inside the library, then delete the actual folder and replace that with a symlink (pointing to the existing folder that I want to index) of the same name. Eaglefiler will consider the symlink like the created (and deleted) folder like the actual foler.
This works quite well for me, I have used that to point to my local Obsidian vault so that I can search for that using Alfred integration with Eaglefiler
Guess this is nothing new to seasoned Eaglefiler users but sharing this just in case