Repro is with Brim commit ab5b75d.

In the attached video, I'm working with the saved query from ciphers.json.gz which contains a const map definition that's over 15k characters wide. I needed to find where an element containing specific text was located and had to cut & paste the editor window's contents into a separate non-Brim editor so i could locate it. As users' Zed programs become more sophisticated these kinds of struggles are likely to come up more often.

What I'd have done in this kind of situation in a browser context is invoke the "Find" tool, such as is invoked via Cmd/Ctrl+F in Chrome. Indeed, since Electron shares a lot of its base with Chrome I'd hoped that maybe it was something that could be trivially enabled, but a quick web search revealed an old issue electron/electron#2037 where a spokesperson claimed that's not supported out-of-the-box in Electron. Thankfully as the thread continues people speak as if the API has made it increasingly simple and it looks like there's implementations out there we could borrow from.