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LibWeb: Allow cloneNode() to clone elements with weird attributes

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We can't rely on Element.setAttribute() in cloneNode() since that will
throw on weird attribute names. Instead, just follow the spec and copy
attributes into cloned elements verbatim.

This fixes a crash when loading the "issues" tab on GitHub repos.
They are actually sending us unintentionally broken markup, but we
should still support cloning it. :^)
This commit is contained in:
Andreas Kling 2024-04-21 18:16:27 +02:00
commit 193fc7ef98
Notes: sideshowbarker 2024-07-17 11:29:41 +09:00
5 changed files with 19 additions and 1 deletions
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6
Userland/Libraries/LibWeb/DOM/Element.cpp
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@ -246,6 +246,12 @@ WebIDL::ExceptionOr<void> Element::set_attribute_ns(Optional<FlyString> const& n
return {};
}
// https://dom.spec.whatwg.org/#concept-element-attributes-append
void Element::append_attribute(FlyString const& name, String const& value)
{
m_attributes->append_attribute(Attr::create(document(), name, value));
}
// https://dom.spec.whatwg.org/#concept-element-attributes-append
void Element::append_attribute(Attr& attribute)
{