Cthulhu is no longer a fork. Now it is a screen reader written in Golang.

tests/browser-positions.html

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+<!doctype html>
+<html lang="en">
+<meta charset="utf-8">
+<title>Cthulhu Browser Probe</title>
+<button autofocus>Start position probe</button>
+<ul>
+  <li aria-label="First item">First</li>
+  <li aria-label="Middle item">Middle</li>
+  <li aria-label="Last item">Last</li>
+</ul>
+<ul>
+  <li aria-label="Virtual item" aria-posinset="501" aria-setsize="1001" tabindex="0">Virtual item</li>
+  <li aria-label="Unknown size" aria-posinset="1" aria-setsize="-1">Unknown size</li>
+</ul>
+<div role="tree">
+  <div role="treeitem" aria-label="Nested tree item" aria-level="2" aria-posinset="2" aria-setsize="4">Nested</div>
+</div>
+<div role="menu">
+  <div role="menuitem" aria-label="First menu item">First action</div>
+  <div role="separator"></div>
+  <div role="menuitemcheckbox" aria-label="Second menu item" aria-checked="true">Second action</div>
+</div>
+<div role="radiogroup">
+  <span>Choose a value</span>
+  <div role="radio" aria-label="First radio" aria-checked="true">First</div>
+  <div role="radio" aria-label="Second radio" aria-checked="false">Second</div>
+</div>
+</html>