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[css-pseudo] no decoration propagation on highlights (closes #6829) #7221

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Merged
merged 4 commits into from
May 10, 2022
Merged

[css-pseudo] no decoration propagation on highlights (closes #6829) #7221

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fe83305
[css-pseudo] no decoration propagation on highlights (closes #6829)
delan Apr 15, 2022
c6002f7
“non-highlight” → “the element’s own”
delan Apr 15, 2022
7fc965d
simplify normative text; elaborate note
delan Apr 20, 2022
6dbf3d9
all highlight pseudo styles, not just the root
delan May 10, 2022
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17 changes: 17 additions & 0 deletions css-pseudo-4/Overview.bs
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Expand Up @@ -988,6 +988,23 @@ Text and Text Decorations</h4>
</div>
</div>

While the element’s own
<a href="https://www.w3.org/TR/css-text-decor/#line-decoration">line decorations</a>
are propagated from
containing <a spec=css-text-decor>decorating boxes</a>
as usual,
decorations introduced by [=highlight pseudo-elements=]
apply only to the text
directly associated with the [=originating element=]
(or intervening [=pseudo-element=] such as ''::first-line'' or ''::first-letter'').

Note: Because highlight decorations
are propagated through inheritance,
not through the box tree,
they can be declared on the root element
and still reliably decorate out-of-flow descendants,
which is not the case for the element’s own decorations.

<h4 id="highlight-replaced">
Replaced Elements</h4>

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