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Auto merge of #9799 - nox:range-extractcontents, r=KiChjang

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Fix step 14.2 of Range::ExtractContents

We need the last inclusive ancestor of start node that is not an inclusive ancestor
of end node, not the first that is an inclusive ancestor of it.

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This commit is contained in:
bors-servo 2016-02-29 05:11:28 +05:30
commit dfdeabf57d
2 changed files with 3 additions and 19 deletions
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5
components/script/dom/range.rs
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@ -564,8 +564,9 @@ impl RangeMethods for Range {
} else {
// Step 14.1-2.
let reference_node = start_node.ancestors()
.find(|n| n.is_inclusive_ancestor_of(end_node.r()))
.unwrap();
.take_while(|n| !n.is_inclusive_ancestor_of(&end_node))
.last()
.unwrap_or(Root::from_ref(&start_node));
// Step 14.3.
(reference_node.GetParentNode().unwrap(), reference_node.index() + 1)
};