line-clamp CSS property (collapse variant)

[andreubotella]

WebKittens

@fantasai @heycam

Title of the spec

line-clamp CSS property (collapse variant)

URL to the spec

w3c/csswg-drafts#7708 (discussion issue; no spec yet)

URL to the spec's repository

No response

Issue Tracker URL

No response

Explainer URL

https://github.com/Igalia/explainers/blob/main/css/line-clamp/README.md

TAG Design Review URL

No response

Mozilla standards-positions issue URL

mozilla/standards-positions#984

WebKit Bugzilla URL

No response

Radar URL

No response

Description

CSS Overflow Level 4 defines line-clamp based on fragmentation (https://drafts.csswg.org/css-overflow-4/#line-clamp), but that is not feasible for Gecko or WebKit to implement anytime soon. Due to that, @emilio opened w3c/csswg-drafts#7708 to discuss a variant of line-clamp that is based on hiding lines and boxes from paint instead ("the collapse variant"). There is no spec text written for this variant yet, but the CSSWG decided to greenlight both variants for prototyping, and in Chromium we are currently planning to prototype it, rather than the fragmentation-based variant.