Re: [csswg-drafts] [css-selectors] Standardize `:(‑moz‑)first‑node` and `:(‑moz‑)last‑node` (#3216)

@emilio Can you elaborate on why these are slow? Presumably they're slow *in comparison to* :first-child? Is it related to the "ignore text nodes that are just whitespace" bit?

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Received on Tuesday, 30 March 2021 18:12:51 UTC