MediaWiki core has provided a LESS mixin to show a bullet image fallback, mostly for IE 6-8 to workaround custom list-style-image set to an SVG. Falling back in those browsers to a Gif or PNG depending on which skin.
Let's remove the fallbacks, browsers which don't understand SVGs degrade gracefully to normal list bullets and as the images are data-uris we gonna save some bytes for all users.
Don't want to remove custom SVGs here, as default bullet on sans-serif can be much smaller. For IE6-8 that seems acceptable, but for modern browsers let's keep the SVG (for now).
- Remove fallbacks and mixin usage in:
- MonoBook – https://gerrit.wikimedia.org/r/502052
- Vector – https://gerrit.wikimedia.org/r/502050
- MetroLook – https://gerrit.wikimedia.org/r/502051
- Splash – https://gerrit.wikimedia.org/r/502057
Proposed treatment in IE 8/Vector without mixin:
Also remove the mixin. I don't think we need a deprecation time here, as long as we update all skins accordingly. But please share if you think otherwise.
- Remove mixin – https://gerrit.wikimedia.org/r/502336
