allow workspace edit to "create" untitled files (microsoft#191779)

microsoft/vscode-copilot#1261

Author: jrieken

extensions/vscode-api-tests/src/singlefolder-tests/workspace.test.ts

@@ -977,6 +977,22 @@ suite('vscode API - workspace', () => {
 		assert.strictEqual(document.getText(), expected);
 	});
 
+
+	test('[Bug] Failed to create new test file when in an untitled file #1261', async function () {
+		const uri = vscode.Uri.parse('untitled:Untitled-5.test');
+		const contents = `Hello Test File ${uri.toString()}`;
+		const we = new vscode.WorkspaceEdit();
+		we.createFile(uri, { ignoreIfExists: true });
+		we.replace(uri, new vscode.Range(0, 0, 0, 0), contents);
+
+		const success = await vscode.workspace.applyEdit(we);
+
+		assert.ok(success);
+
+		const doc = await vscode.workspace.openTextDocument(uri);
+		assert.strictEqual(doc.getText(), contents);
+	});
+
 	test('Should send a single FileWillRenameEvent instead of separate events when moving multiple files at once#111867, 1/3', async function () {
 
 		const file1 = await createRandomFile();

src/vs/workbench/contrib/bulkEdit/browser/bulkFileEdits.ts

@@ -18,6 +18,7 @@ import { ResourceFileEdit } from 'vs/editor/browser/services/bulkEditService';
 import { CancellationToken } from 'vs/base/common/cancellation';
 import { tail } from 'vs/base/common/arrays';
 import { ITextFileService } from 'vs/workbench/services/textfile/common/textfiles';
+import { Schemas } from 'vs/base/common/network';
 
 interface IFileOperation {
 	uris: URI[];
@@ -173,6 +174,9 @@ class CreateOperation implements IFileOperation {
 		const undoes: DeleteEdit[] = [];
 
 		for (const edit of this._edits) {
+			if (edit.newUri.scheme === Schemas.untitled) {
+				continue; // ignore, will be handled by a later edit
+			}
 			if (edit.options.overwrite === undefined && edit.options.ignoreIfExists && await this._fileService.exists(edit.newUri)) {
 				continue; // not overwriting, but ignoring, and the target file exists
 			}