[Feature Request] Automatically expand post preview when navigating with the keyboard

[ptkato]

One feature from RES that I miss in RedditEnhancer is that I could open a post preview in a subreddit and navigate up/down using J/K, and the next selected post would have its preview opened, while the previous one would close.

[joelacus]

Hi. That's a good idea, I'll see if I can add that.