The <ms> token element is not implemented. If we ignore the mstyle craziness (like Gecko does), this could be done with pure CSS: ms:before, ms:after { content: "\0022" } ms[lquote]:before { content: attr(lquote) } ms[rquote]:after { content: attr(rquote) }
Created attachment 219449 [details] attempt Does not seem to work...
lquote/rquote have been removed from MathML Core: https://w3c.github.io/mathml-core/#string-literal-ms So I guess we don't need to implement anything. Leaving this open for now, to check if we pass WPT tests.
We are passing this WPT: https://wpt.fyi/results/mathml/presentation-markup/tokens/ms-001.html?label=master&label=experimental&aligned&q=ms and https://wpt.fyi/results/mathml/crashtests/multicol-inside-ms.html?label=master&label=experimental&aligned&q=ms It seems nothing much to do here.