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[css-text-decor-3] Specify animation addition/accumulation behavior for text-shadow #4375

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Tweak wording to show that accumulation performs addition on the comp…
…onents
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stephenmcgruer committed Sep 26, 2019
commit 69287946f82d14dbf7b9da761251ee6735d0cf2d
7 changes: 4 additions & 3 deletions css-text-decor-3/Overview.bs
Original file line number Diff line number Diff line change
Expand Up @@ -899,9 +899,10 @@ concatenation such that <var ignore>V<sub>result</sub></var> is equal to
<var>V<sub>a</sub></var> [=list/extended=] with <var>V<sub>b</sub></var>.

<a lt="value accumulation">Accumulation</a> of two text-shadow lists
<var>V<sub>a</sub></var> and <var>V<sub>b</sub></var> follows the same
approach as interpolation of two text-shadow lists. The algorithm is defined
in the <b>Animation type</b> section of 'text-shadow'.
<var>V<sub>a</sub></var> and <var>V<sub>b</sub></var> follows the padding rules
for interpolation as defined in the <b>Animation type</b> section of
'text-shadow'. Instead of interpolating, however, accumulation performs
addition on each component according to its type.

<h2 id="painting">
Painting Text Decorations</h2>
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