💄 completion provider display names, https://github.com/microsoft/vscode/issues/109167

src/vs/workbench/api/common/extHostLanguageFeatures.ts

@@ -1743,7 +1743,7 @@ export class ExtHostLanguageFeatures implements extHostProtocol.ExtHostLanguageF
 
 	registerCompletionItemProvider(extension: IExtensionDescription, selector: vscode.DocumentSelector, provider: vscode.CompletionItemProvider, triggerCharacters: string[]): vscode.Disposable {
 		const handle = this._addNewAdapter(new SuggestAdapter(this._documents, this._commands.converter, provider, this._apiDeprecation, extension), extension);
-		this._proxy.$registerSuggestSupport(handle, this._transformDocumentSelector(selector), triggerCharacters, SuggestAdapter.supportsResolving(provider), `${extension.identifier.value}/${triggerCharacters.join()}`);
+		this._proxy.$registerSuggestSupport(handle, this._transformDocumentSelector(selector), triggerCharacters, SuggestAdapter.supportsResolving(provider), `${extension.identifier.value}(${triggerCharacters.join('')})`);
 		return this._createDisposable(handle);
 	}