Duplicate Clipboard actions in editor context menu

[dhuebner]

Bug Description:

Duplicate entries for Copy/Paste/Cut actions in the editor's context menu. Es extensions I have only ESLint installed, everything else should be the built-in extensions set.

Steps to Reproduce:

1. Open a file editor
2. Open context menu, check the clipboard actions section.

Additional Information

• Operating System:
  Mac OSX Sonoma

• Theia Version:
  Eclipse Theia IDE
  Version 1.48.300
  VS Code API Version: 1.87.2

[dhuebner]

Here is the editor context menu in a browser app:

[dhuebner]

Seems like the one contribution comes from monaco editor e.g. Command ID for cut editor.action.clipboardCutAction and the other from common editor menu ID core.cut registered in editor-menu.ts.

[dhuebner]

One possible solution would be to skip context menu registration in MonacoEditorMenuContribution when a command with the mapped id from MonacoCommands.COMMON_ACTIONS is already registered.
In example when handling editor.action.clipboardCutAction check in the MenuRegistry if the mapper command core.cut already registered in the given item group and skip.

if (commandId) {
    const menuPath = [...EDITOR_CONTEXT_MENU, (item.group || '')];
    const coreId = MonacoCommands.COMMON_ACTIONS.get(commandId);
    if (coreId && registry.getMenu(menuPath).children.some(it => it.id === coreId)) {
        console.debug(`The command '${commandId}' is already registered in the context menu as '${coreId}'.`);
    } else {
        registry.registerMenuAction(menuPath, this.buildMenuAction(commandId, item));
    }
}