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Merged
rust-bors merged 1 commit into from
Jun 20, 2026
+0 −39
Merged

Only copy visible content in clipboard in source code pages #158137

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39 changes: 0 additions & 39 deletions src/librustdoc/html/static/js/main.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2252,42 +2252,3 @@ function preLoadCss(cssUrl) {
elem.addEventListener("click", showHideCodeExampleButtons);
});
}());


// Workaround for browser-specific bugs when copying code snippets.
//
// * In Firefox, copying text that includes elements with `user-select: none`
// inserts extra blank lines.
// - Firefox issue: https://bugzilla.mozilla.org/show_bug.cgi?id=1273836
// - Rust issue: https://github.com/rust-lang/rust/issues/141464
//
// * In Chromium-based browsers, `document.getSelection()` includes elements
// with `user-select: none`, causing unwanted line numbers to be copied.
// - Chromium issue: https://issues.chromium.org/issues/446539520
// - Rust issue: https://github.com/rust-lang/rust/issues/146816
(function() {
document.body.addEventListener("copy", event => {
let target = nonnull(event.target);
let isInsideCode = false;
while (target && target !== document.body) {
// @ts-expect-error
if (target.tagName === "CODE") {
isInsideCode = true;
break;
}
// @ts-expect-error
target = target.parentElement;
}
if (!isInsideCode) {
return;
}
const selection = nonnull(document.getSelection());
const text = Array.from({ length: selection.rangeCount }, (_, i) => {
const fragment = selection.getRangeAt(i).cloneContents();
fragment.querySelectorAll("[data-nosnippet]").forEach(el => el.remove());
return fragment.textContent;
}).join("");
nonnull(event.clipboardData).setData("text/plain", text);
event.preventDefault();
});
}());
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