Peniquitous
A user script that provides Ctrl-P & Ctrl-N support for search field drop-down lists.
When search fields offer a list of suggestions, they often support using the up & down keys to choose a suggestion. This user script works by simulating the up & down arrow keys when you press Ctrl-P & Ctrl-N.
Using these new key combinations, you can save a couple seconds moving your hand to the arrow keys or take advantage of the muscle memory instilled from GNU Readline, Emacs, and other console applications.
Demo
Install
Open the raw script and click “Install” in the resulting dialog. A more detailed explanation is available on the Greasemonkey wiki.
License
Copyright © 2015, 2021 Teddy Wing. Licensed under the GNU GPLv3+ (see the included COPYING file).