[Parth Raiyani (rparth07)]

This resolves issue #340911

How to test

1. Launch VS Code from sources using .\scripts\code.bat.
2. Open the Integrated Browser and navigate to a URL containing a path, query, and fragment, such as https://code.visualstudio.com.
3. Right-click the browser’s editor tab and select Duplicate tab (D).
4. Verify a new tab opens immediately to the right, in the same editor group, with the same URL. Confirm the original remains open.
5. Navigate the duplicate to another page and verify the original tab’s URL remains unchanged.
6. Activate another editor, then right-click the inactive browser tab and duplicate it. Verify the clicked browser tab is duplicated.
7. Right-click the browser’s editor tab and press D; verify one duplicate opens.
8. Right-click a regular text-editor tab and verify Duplicate tab (D) is not shown.

[vs-code-engineering]

📬 CODENOTIFY

The following users are being notified based on files changed in this PR:

Kyle Cutler (@kycutler)

Matched files:

• src/vs/platform/browserView/common/browserView.ts
• src/vs/workbench/contrib/browserView/electron-browser/features/browserTabManagementFeatures.ts
• src/vs/workbench/contrib/browserView/test/electron-browser/features/browserTabManagementFeatures.test.ts

Joaquín Ruales (@jruales)

Matched files:

• src/vs/platform/browserView/common/browserView.ts
• src/vs/workbench/contrib/browserView/electron-browser/features/browserTabManagementFeatures.ts
• src/vs/workbench/contrib/browserView/test/electron-browser/features/browserTabManagementFeatures.test.ts

[Parth Raiyani (rparth07)]

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[Copilot]

🟡 Changes recommended

Mnemonic handling affects unrelated menu actions, and duplicate-tab ignores multi-selected tabs.

2 open findings

• Escape all menu actions before enabling platform-specific mnemonics · New
• Handle multi-selection when duplicating editor tabs · New

What changed in this PR

Adds Integrated Browser tab duplication while preserving the source URL and tab independence.

Changes:

• Adds the Duplicate Tab command and clicked-tab targeting.
• Adds context-menu mnemonic support.
• Adds duplicate-tab and menu-label tests.

File	Description
src/​vs/​workbench/​services/​contextmenu/​test/​electron-browser/​contextmenuService.test.ts	Tests native mnemonic labels.
src/​vs/​workbench/​services/​contextmenu/​electron-browser/​contextmenuService.ts	Renders native menu mnemonics.
src/​vs/​workbench/​contrib/​browserView/​test/​electron-browser/​features/​browserTabManagementFeatures.test.ts	Tests duplication and visibility.
src/​vs/​workbench/​contrib/​browserView/​electron-browser/​features/​browserTabManagementFeatures.ts	Implements Duplicate Tab.
src/​vs/​workbench/​common/​contextkeys.ts	Defines clicked-tab editor context.
src/​vs/​workbench/​browser/​parts/​editor/​editorTabsControl.ts	Populates the new context key.
src/​vs/​platform/​contextview/​browser/​contextMenuService.ts	Requests mnemonic labels.
src/​vs/​platform/​contextview/​browser/​contextMenuHandler.ts	Enables custom-menu mnemonics.
src/​vs/​platform/​browserView/​common/​browserView.ts	Adds the command identifier.
src/​vs/​platform/​actions/​test/​common/​menuService.test.ts	Tests mnemonic action labels.
src/​vs/​platform/​actions/​common/​actions.ts	Adds mnemonic-aware label rendering.

🧠 Review effort: Balanced

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[Copilot]

🔵 Needs a closer look

No actionable findings remain, but shared native and custom menu changes need cross-platform UI validation before approval.

No open issues 🎉

2 resolved since last review

• Handle multi-selection when duplicating editor tabs
• Escape all menu actions before enabling platform-specific mnemonics

_{Review effort: Balanced}

[Parth Raiyani (rparth07)]

Joaquín Ruales (@jruales) or Kyle Cutler (@kycutler), could you please review :)

[Parth Raiyani (rparth07)]

Kyle Cutler (@kycutler), could you help confirm whether this Integrated Browser change is suitable for review, or suggest the right reviewer? Joaquín Ruales (@jruales) is currently assigned.