On topic pages, show "X unread comments (Y total)"; on comment pages, highlight unread comments. Local storage only -- does not work across multiple computers.
A fork of the script Reddit - Unread Comment Helper.
On topic pages, show "X unread comments (Y total)"; on comment pages, highlight unread comments.
The way it works is by using HTML5 webstorage (localStorage) to keep a count of comments and the highest comment ID seen, per thread.
You can navigate through unread comments with the following hotkeys:
Alt+Q / Alt+W -or- Ctrl+Up arrow / Ctrl+Down arrow.
Note: Because it uses in-browser storage, unread counts etc. will not be shared across multiple computers.