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LibWeb+Base: Fix An+B of foo parsing

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When I wrote the An+B parser, it was guaranteed to have no
non-whitespace tokens after it. This is no longer true with the `of
foo` syntax, so this patch corrects the logic when there is no `+B`
segment.

This makes this case shown on Twitter work correctly. :^)
https://twitter.com/simevidas/status/1506657566012678151
This commit is contained in:
Sam Atkins 2022-03-24 16:38:34 +00:00 • committed by Andreas Kling
parent 5aad32b504
commit c914e732d2
2 changed files with 37 additions and 12 deletions
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19
Base/res/html/misc/nth-child.html
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@ -52,6 +52,9 @@
.acid3 > div:nth-child(-5n+3) {
background-color: lightblue;
}
.test-of-type > div:nth-child(2n of div) {
background-color: lightblue;
}
.test-of > div:nth-child(3n+1 of .special) {
background-color: lightblue;
}
@ -191,6 +194,22 @@
<div>15</div>
</div>
<h4>:nth-child(2n of div)</h4>
<div class="test-of-type">
<div>1</div>
<p>Paragraph</p>
<div>2 +</div>
<p>Paragraph</p>
<div>3</div>
<p>Paragraph</p>
<div>4 +</div>
<p>Paragraph</p>
<div>5</div>
<p>Paragraph</p>
<div>6 +</div>
<p>Paragraph</p>
</div>
<h4>:nth-child(3n+1 of .special)</h4>
<div class="test-of">
<div class="special">1 +</div>