Does libvte does this all the time? I was under the impression that, since the dawn of unlimited scrollback in terminal emulators, you only write terminal conte

Does libvte does this all the time? I was under the impression that, since the dawn of unlimited scrollback in terminal emulators, you only write terminal contents to disk if you need to store an unlimited amount of scrollback content. If you configure a finite amount of scrollback lines, they're stored in memory. Konsole does this, and I'd be fairly surprised if qterminal didn't, either -- but if you're concerned about this, you should definitely check the source code.