It's something I'm missing in all the apps I've tried so far, but it would be cool to be able to quickly see the new coments since last visit on a post.
I guess using different background would be enough and maybe provide a way to navigate between them.
This was added in #281 but the code is disabled due to the API we are using missing the ability to mark comments on a post as read. Or at least, we've not found how to do it.
Lemmy does not track which comments on a post are new, only how many there are. The Lemmy webUI is just highlighting any comments that have been made in the last 10 minutes.
For the reddit website I had an user script with a slider that was using the time of the last page visit... And that you could adjust.
So maybe something similar? Like the app remembers last time a post has been visited (with some garbage collection after a while), then the user can use a slider to highlight the new comments since X time.
Also if the API provides you the number, can't you just iterate back from the latest in time and count until you reach 0?
I think cache the list of comments (if there's at least an unique identifier to use as reference) on viewed posts and compare to a new request could be a solution, but I don't know how the api works, so all this is assumptions on how I would handle this problem..
I think you would find a solution to this soon!