[css-ui] Should the cursor property support image-set()? #5831
Description
WebKit's implementation of image-set allows you to use cursor: -webkit-image-set().
There's a few tests in WPT (http://wpt.live/css/css-ui/cursor-image-014.html, http://wpt.live/css/css-ui/cursor-image-015.html), that seem to claim it should work (and it should support full <image> syntax). However the spec syntax only has <url>: https://drafts.csswg.org/css-ui-4/#cursor
cc @frivoal