double-tap Option
Open it
Tap Option twice, quickly, from any app. The panel comes up over whatever you were doing with your whole history in it — start typing to narrow, ↑↓ to walk the list, ⏎ to paste back into the app you came from. Esc closes it. Nothing else needs to be running, and holding Option still works as a normal modifier.
- If text was selected when you opened it, that text is already in the search box.
- Prefer a combo? Set one under Settings → Shortcuts and keep both.