In T26070#7672041, @Jdlrobson wrote:

The goal is to have a dark mode that applies to all skins, but there's a lot of work we need to do to prepare for that. Having a dark mode on a per skin basis would be really huge maintenance burden (essentially doubling the number of skins we have to test on).

@Volker_E,
Look at the dark mode implementation at Google or DuckDuckGo for example, and see this article: https://uxmovement.com/content/why-you-should-never-use-pure-black-for-text-or-backgrounds/
Consider changing the perfect black background to one that is dark but not perfect black.

In T221898#7141545, @Lens0021 wrote:

@Frap: you can find the status report of dark mode in https://meta.wikimedia.org/wiki/Community_Tech/Status_report_for_2019_wishlist#Night_Mode

In T221897#7141002, @R4356th wrote:

Most of these tasks just have not been closed since Community Tech abandoned the extension.

What is the status on this?

Since MediaWiki can be installed on a domain where other applications or JavaScript scripts may be installed it would be good to put the LocalStorage key in a namespace by prefixing the key with mw or mediawiki or something, followed by a dot (the . character).

That's not very discoverable, plus likely more code complexity to maintain.

The button could be dimmed when not hovered, that way it doesn't clutter so much because it is dim, yet still discoverable.

In T253103#6717649, @Esanders wrote:

I’m not sure cluttering the UI for such an edge case would be valuable to most users. Most syntax highlight blocks don’t use the line number feature anyway.

But it would also be nice with a toggle button embedded in the <syntaxhighlight> template. This would require some JavaScript.

When using the syntaxhighlight extension the author of the page can specify whether to show line numbers or not, but the person reading the page might have their own preferences.

On certain websites such as GitHub there is a text entry field that is prepopulated but empty so that when you press backspace then it removes the prepopulated thing.

In T178159#3683978, @matmarex wrote:

I often remove or edit the autogenerated section comment, e.g. when I am actually deleting the section, or inserting another section above it, or editing the last section in an article to tweak the navboxes.