Fix for formatting notebook cells. (#17650)

* Fix for formatting notebook cells.

* Ensure we check language id.

Author: karthiknadig

news/2 Fixes/16980.md

@@ -0,0 +1 @@
+Ensure we use fragment when formatting notebook cells.

src/client/common/editor.ts

@@ -248,11 +248,13 @@ export async function getTempFileWithDocumentContents(document: TextDocument, fs
     // because the language server is watching the file system for Python
     // file add/delete/change and we don't want this temp file to trigger it.
 
-    let fileName = `${document.uri.fsPath}.${md5(document.uri.fsPath)}.tmp`;
+    let fileName = `${document.uri.fsPath}.${md5(document.uri.fsPath + document.uri.fragment)}.tmp`;
     try {
         // When dealing with untitled notebooks, there's no original physical file, hence create a temp file.
         if (isNotebookCell(document.uri) && !(await fs.fileExists(document.uri.fsPath))) {
-            fileName = (await fs.createTemporaryFile(`${path.basename(document.uri.fsPath)}.tmp`)).filePath;
+            fileName = (
+                await fs.createTemporaryFile(`${path.basename(document.uri.fsPath)}-${document.uri.fragment}.tmp`)
+            ).filePath;
         }
         await fs.writeFile(fileName, document.getText());
     } catch (ex) {

src/client/providers/formatProvider.ts

@@ -3,6 +3,7 @@
 
 import * as vscode from 'vscode';
 import { ICommandManager, IDocumentManager, IWorkspaceService } from '../common/application/types';
+import { PYTHON_LANGUAGE } from '../common/constants';
 import { IConfigurationService } from '../common/types';
 import { IInterpreterService } from '../interpreter/contracts';
 import { IServiceContainer } from '../ioc/types';
@@ -76,7 +77,7 @@ export class PythonFormattingEditProvider
         // Workaround is to resolve promise to nothing here, then execute format document and force new save.
         // However, we need to know if this is 'format document' or formatting on save.
 
-        if (this.saving) {
+        if (this.saving || document.languageId !== PYTHON_LANGUAGE) {
             // We are saving after formatting (see onSaveDocument below)
             // so we do not want to format again.
             return [];