[dependabot]

Updated AngleSharp from 1.8.5 to 1.9.0.

Release notes

Sourced from AngleSharp's releases.

1.9.0

Released on Friday, October 30 2026.

What's Changed

• Improved performance of TextContent, :contains(), GetElementById, GetElementsByName, GetElementsByClassName, GetElementsByTagName and Normalize, which also continue with an explicit stack below 128 levels instead of recursing (#​1389) @​michaelthyregod
• Improved performance of IHtmlParser.ParseFragment and of inserting many nodes at once (Append, Prepend, ...): finding a template's host no longer scans the whole document, and removing a node's last child no longer scans its siblings
• Improved performance of removing or inserting a node's first child, which no longer shifts all its siblings, so moving every child of a large node one by one (or replacing it via innerHTML) takes linear time; each node with children also allocates one object less
• Improved quadratic parse time on hostile markup: elements and text foster-parented out of a table, a text run split by ignored end tags (x</q>x</q>...), and repeated html / body start tags piling up attributes; attribute name lookups on elements with many attributes no longer scan them
• Improved performance of :has(): relative arguments only walk what they can reach (:has(> a) the descendants, :has(+ a) / :has(~ a) the following siblings) instead of the parent's whole subtree, the walk no longer allocates, and a :has() is tested after the rest of its compound and its ancestor chain, so rules such as .tree :has(.skeleton):hover only walk subtrees of hovered elements inside .tree
• Fixed setInterval with a delay of 0 never yielding: every round completed synchronously and queued tasks until memory ran out; a negative delay of setTimeout or setInterval threw instead of counting as 0 (nested intervals now wait at least 4ms, as in browsers)
• Fixed fragment parsing (ParseFragment, innerHTML) to break out of svg / math on HTML start tags such as p, b or div, which previously stayed foreign elements
• Fixed CreateElement<TElement>() depending on reflection that trimming can break; IElement, IHtmlElement and ISvgElement now throw instead of returning an arbitrary element @​michaelthyregod
• Fixed IHtmlParser.ParseFragment to keep an SVG or MathML context element in its namespace (and an annotation-xml context's encoding), instead of parsing as if the context were an HTML element of the same name, and to find a form ancestor of the context, so a nested <form> start tag is ignored as with innerHTML
• Fixed inserting a detached template into its own contents not throwing a HierarchyRequestError
• Fixed AwaitEventAsync removing its listener off-thread while a dispatch was still running (#​1397) @​michaelthyregod
• Fixed event listener registration racing a dispatch on another thread @​michaelthyregod
• Fixed IHtmlSelectElement.SelectedIndex gaining a setter; set Options.SelectedIndex to change the selection (#​1395) @​SimonCropp
• Added AwaitEventAsync overload taking a CancellationToken @​michaelthyregod
• Added trimming and Native AOT compatibility (IsAotCompatible) for the .NET 8 and .NET 10 targets (#​1398) @​michaelthyregod
• Added trim-safe generic overloads of SubmitAsync, Attr, VirtualResponse.Headers and ToDictionary, which calls with an anonymous object bind to when recompiled; the Object overloads are now obsolete @​michaelthyregod
• Released 1.9.0 by @​FlorianRappl in Release 1.9.0 AngleSharp/AngleSharp#1399

New Contributors

• @​michaelthyregod made their first contribution in Fix stack overflow on deeply nested documents AngleSharp/AngleSharp#1389

Full Changelog: AngleSharp/AngleSharp@v1.8.6...v1.9.0

1.8.6

Released on Sunday, October 25 2026

What's Changed

• Removed temporary copies when serializing text that needs no HTML escaping @​perfloop-agent in Avoid rebuilding unescaped text during HTML serialization AngleSharp/AngleSharp#1388
• Fixed INode.Equals (isEqualNode) to compare what the DOM spec compares: character data, doctype identifiers, processing instructions, element prefixes and attribute local names, no longer base URLs, without overflowing the stack on deep trees
• Fixed IAttr.Equals comparing the prefix instead of the local name
• Fixed IDocument.Import (importNode) returning nodes owned by the source document instead of the importing one
• Fixed IDocument.Import accepting a shadow root instead of throwing NotSupported
• Fixed INode.Clone and Import overflowing the stack on deeply nested trees and templates
• Fixed a shallow clone of a <template> copying its contents
• Fixed serializing < and > in attribute values unescaped, which let markup break out when reparsed under different rules (mutation XSS); they are now written as < and > like browsers do since the HTML spec change of May 2025
• Fixed IRange.CopyContent and ExtractContent overflowing the stack on deeply nested ranges
• Fixed Dispatch (dispatchEvent) returning true for a canceled event
• Fixed MutationObserver not observing a document itself and throwing for one without a root element
• Fixed MutationObserver.Disconnect keeping the previous targets for a later Connect
• Fixed a failing navigation or submission from DoClick crashing the process; it is reported as a context error
• Fixed URLSearchParams treating non-ASCII values as single bytes and leaving + undecoded @​NotAFlightRisk in Decode URLSearchParams as UTF-8 and treat + as a space AngleSharp/AngleSharp#1390
• Added the IHtmlSelectElement.SelectedIndex setter
• Added HtmlParserOptions.MaximumDepth (default 512) to stop deeply nested markup from building trees that overflow the stack
• Added focusing of elements with a tabindex and blurring of any focused element
• Added DoClickAsync to await a click's navigation or form submission
• Added toggling the parent <details> when clicking its <summary>
• Added declarative shadow DOM: the parser attaches <template shadowrootmode="open"> (or closed) as the shadow root of its parent
• Added :host(<compound>), and selectors in a shadow tree reaching its host (only through :host)
• Released 1.8.6 by @​FlorianRappl in Release 1.8.6 AngleSharp/AngleSharp#1391

New Contributors

• @​perfloop-agent made their first contribution in Avoid rebuilding unescaped text during HTML serialization AngleSharp/AngleSharp#1388

Full Changelog: AngleSharp/AngleSharp@v1.8.5...v1.8.6

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[github-actions]

🤖 Dependabot triage

🧑 Needs a human — infra-secret.

The auto-merge workflow fails because it calls gh pr merge --auto --merge, but this repository does not allow merge commits (only squash/rebase are permitted), causing a GraphQL error unrelated to the dependency bump itself. This is a repository/workflow configuration issue, not something fixable by editing the dependency version or product code.

No dependency version was changed. See doc/handwritten/for-maintainers/workflows/dependabot-autofix.en.md.