I recently wrote about image-mode's next/previous item navigation, a feature I wanted to bring to ready player mode. I was curious to see how image-mode resolved next and previous files, so I checked the associated keybinding (n) via helpful-key (my preferred alternative to describe-key), and landed on image-next-file. While this function only takes care of high-level routing, it led me to image-mode--next-file, which is where the actual next/previous file resolution happens: (defun image-mod...