Tweak how the "copy path" rustdoc button works to allow some accessibility tool to work with rustdoc

src/librustdoc/html/static/js/main.js

@@ -2123,20 +2123,27 @@ function preLoadCss(cssUrl) {
         return;
     }
     but.onclick = () => {
-        // Most page titles are '<Item> in <path::to::module> - Rust', except
+        // We get the path from the "breadcrumbs" and the actual item name.
-        // modules (which don't have the first part) and keywords/primitives
+        let path = "";
-        // (which don't have a module path)
+        // @ts-expect-error
-        const titleElement = document.querySelector("title");
+        const heading = document.getElementById(MAIN_ID).querySelector(".main-heading");
-        const title = titleElement && titleElement.textContent ?
-                      titleElement.textContent.replace(" - Rust", "") : "";
-        const [item, module] = title.split(" in ");
-        const path = [item];
-        if (module !== undefined) {
-            path.unshift(module);
-        }
 
-        copyContentToClipboard(path.join("::"));
+        if (heading) {
-        copyButtonAnimation(but);
+            const breadcrumbs = heading.querySelector(".rustdoc-breadcrumbs");
+            if (breadcrumbs) {
+                // @ts-expect-error
+                path = breadcrumbs.innerText;
+                if (path.length > 0) {
+                    path += "::";
+                }
+            }
+
+            // @ts-expect-error
+            path += heading.querySelector("h1 > span").innerText;
+
+            copyContentToClipboard(path);
+            copyButtonAnimation(but);
+        }
     };
 
     /**

tests/rustdoc-gui/copy-path.goml

@@ -18,3 +18,19 @@ assert-size: ("#copy-path.clicked", {"width": |width|, "height": |height|})
 wait-for: "#copy-path:not(.clicked)"
 // We check that the size is still the same.
 assert-size: ("#copy-path:not(.clicked)", {"width": |width|, "height": |height|})
+
+// Check the path for a module.
+go-to: "file://" + |DOC_PATH| + "/test_docs/foreign_impl_order/index.html"
+click: "#copy-path"
+// We wait for the new text to appear.
+wait-for: "#copy-path.clicked"
+// We check that the clipboard value is the expected one.
+assert-clipboard: "test_docs::foreign_impl_order"
+
+// Check the path for the crate.
+go-to: "file://" + |DOC_PATH| + "/test_docs/index.html"
+click: "#copy-path"
+// We wait for the new text to appear.
+wait-for: "#copy-path.clicked"
+// We check that the clipboard value is the expected one.
+assert-clipboard: "test_docs"