Ugh, this is so frustrating. Just noticed after 1 year of using EN with over 1000 notes that this is not possible. I just assumed it would be. Stupid me huh?
And no, being "optimized" (whatever that means) for speed is not a good argument. As others have mentioned, it's fine if I have to wait a couple of moments if I do a demanding query, but it's not fine if EN cannot do what a text editor or a simple python script could do, and what I have come to just expect from computers. Now I feel like my data ist locked in.
Also, it could be an option to have this 1) only on desktop and/or web and 2) only for the text content or even only for titles (I just hit it when trying to do an "intitle:" query). That should be fast enough!