Reported at en.wikipedia MediaWiki talk:Gadget-HotCat.js

Expected result

• Page is added to my watchlist with the given expiry time. If the page is already in WatchList then current expiry time should be kept as is

Actual result

• Page is added to my watchlist permanently.

How to fix

• HotCat should add the wpWatchlistExpiry parameter when the page is not already in watchlist but omit it when it is.

The change

• User:Zache-test/Gadget-HotCat-T403900.js ( diff )

How to test

• Remove official Cat-a-lot from preferences
• Load modified version from user:username/common.js ( Example: User:Zache-test/common.js )

mw.loader.load('//commons.wikimedia.org/w/index.php?title=User:Zache-test/Gadget-HotCat-T403900.js&action=raw&ctype=text/javascript');

Set the Watchlist expiry in preferences (settings tab Watchlist -> Watched pages)

• Add pages and files I edit to my watchlist = unchecked
• Edit some categories with HotCat
  • Expected result:
    • the watchlist status should stay same as before the edit

• Add pages and files I edit to my watchlist = checked
• Edit some categories with HotCat
  • Expected result:
    • If the page is not in the watchlist then it should be added with selected expiry length
    • If the page is in the watchlist then expiry should stay as same as before