So it looks like what I want to do here is:

• Completely revert the changes to WatchlistChangesBold.css
• Completely revert the changes to WatchlistBase since they all appear to be bolding-related
• Not touch WatchlistGreenIndicators.css or WatchlistGreenIndicatorsMono.css since those should still remain old-UI-only.

@Mattflaschen-WMF does the above look sensible?

In T176382#3644093, @Catrope wrote:

So it looks like what I want to do here is:

• Completely revert the changes to WatchlistChangesBold.css
• Completely revert the changes to WatchlistBase since they all appear to be bolding-related
• Not touch WatchlistGreenIndicators.css or WatchlistGreenIndicatorsMono.css since those should still remain old-UI-only.

@Mattflaschen-WMF does the above look sensible?

Yes, and it works, except the legend issue mentioned below.

In addition (this is all stuff we decided in the meeting to do for accuracy; otherwise, the legend says it's bold (by default) when it's not, and the green indicator gadgets "don't work"):

The page-top legend should read:
On wikis that DO CUSTOM THINGS with bold: "Changes to pages you haven't visited since the changes occurred are shown with solid markers."

https://en.wikipedia.org/wiki/User:Mattflaschen-WMF/MediaWiki:Rcfilters-watchlist-showupdated . This should be copied to anywhere this custom bold stuff exists (look for WatchlistBase or WatchlistChangesBold in P5999)

Wikis that DO NOT do custom things with bold: "Changes to pages you haven't visited since the changes occurred are in <strong>bold</strong>, with solid markers.",

This is already in core.

On Preferences page, the Gadget description text will change to:
Display green collapsible arrows and green bullets for changed pages in your watchlist, page history and recent changes (unavailable with the improved Watchlist user interface).

https://en.wikipedia.org/wiki/User:Mattflaschen-WMF/MediaWiki:Gadget-WatchlistGreenIndicators and https://en.wikipedia.org/wiki/User:Mattflaschen-WMF/MediaWiki:Gadget-WatchlistGreenIndicatorsMono . I removed the period, since that is not the convention. Also, there is a minor pre-existing wording difference between these two, which I left (though I'm not sure if it's intentional for the skin difference or not).

Unfortunately, these all require translations, so not sure how we want to handle that.

I ended up doing this slightly differently for https://en.wikipedia.org/wiki/MediaWiki:Rcfilters-watchlist-showupdated : it now says either "Changes to pages you haven't visited since the changes occurred are shown with solid markers." or "Changes to pages you haven't visited since the changes occurred are shown in bold, with solid markers." depending on whether the bolding gadget is enabled or not.

@Trizek-WMF @Catrope updated the gadgets themselves (the actual CSS) on all wikis, but the text only on English Wikipedia (and test/test2).

Other wikis using the same gadget system as English Wikipedia (a gadget that makes it so by default, unseen changes are not bold; another opt-in gadget to make them bold) should make the updates given in my previous comment (https://phabricator.wikimedia.org/T176382#3645299) (for MediaWiki:Rcfilters-watchlist-showupdated, Catrope's version is better).

In general, they can do:

https://en.wikipedia.org/wiki/MediaWiki:Something => translate to their language => theirwiki.org/wiki/MediaWiki:Something for each of the three above:

• https://en.wikipedia.org/wiki/MediaWiki:Rcfilters-watchlist-showupdated
• https://en.wikipedia.org/wiki/MediaWiki:Gadget-WatchlistGreenIndicators
• https://en.wikipedia.org/wiki/MediaWiki:Gadget-WatchlistGreenIndicatorsMono

If they're not sure if their wiki is affected, they can check P5999.

@Trizek-WMF So it would be helpful if you could notify them by wikitech-ambassador/newsletter/whatever makes sense.

Posted