I've documented this at https://developer.mozilla.org/en-US/docs/Web/CSS/-webkit-line-clamp and mentioned it in the release notes for Firefox 68 at https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/68#CSS. For the browser compatibility info I've created a PR at https://github.com/mdn/browser-compat-data/pull/4142. It would be great if you could check whether everything's ok. Sebastian
Bug 866102 Comment 57 Edit History
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I've documented this at https://developer.mozilla.org/en-US/docs/Web/CSS/-webkit-line-clamp and mentioned it in the release notes for Firefox 68 at https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/68#CSS. For the browser compatibility info I've created a PR at https://github.com/mdn/browser-compat-data/pull/4142 and for the CSS info https://github.com/mdn/data/pull/366. It would be great if you could check whether everything's ok. Sebastian