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Bug 1415761 - Catch the exception and rethrow it after invoking custom elements reactions;

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The spec was unclear on how CEReactions interact with thrown exceptions; see https://github.com/whatwg/html/issues/3217. The spec is now being clarified in https://github.com/whatwg/html/pull/3235.

Tag UXP Issue #1344
This commit is contained in:
Gaming4JC 2020-01-20 20:14:59 -05:00 • committed by Roy Tam
commit 5db13d0f4b
6 changed files with 50 additions and 8 deletions
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3
dom/base/nsDocument.cpp
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@ -5809,7 +5809,8 @@ nsDocument::RegisterElement(JSContext* aCx, const nsAString& aType,
return;
}
AutoCEReaction ceReaction(this->GetDocGroup()->CustomElementReactionsStack());
AutoCEReaction ceReaction(this->GetDocGroup()->CustomElementReactionsStack(),
aCx);
// Unconditionally convert TYPE to lowercase.
nsAutoString lcType;
nsContentUtils::ASCIIToLower(aType, lcType);