Revert "Fix spawn calls to use Windows path quoting (#17020)" (#17047)

* Revert "Fix spawn calls to use Windows path quoting (#17020)"

This reverts commit 952a5f7.

* Bump version

Author: DonJayamanne

package-lock.json

@@ -1,7 +1,7 @@
 {
     "name": "jupyter",
     "displayName": "Jupyter",
-    "version": "2025.9.0",
+    "version": "2025.9.1",
     "description": "Jupyter notebook support, interactive programming and computing that supports Intellisense, debugging and more.",
     "publisher": "ms-toolsai",
     "author": {

package.json

@@ -22,7 +22,6 @@ import {
 import { logProcess } from './logger.node';
 import { noop } from '../utils/misc';
 import { dispose } from '../utils/lifecycle';
-import { fileToCommandArgument } from '../helpers';
 
 export class BufferDecoder implements IBufferDecoder {
     public decode(buffers: Buffer[]): string {
@@ -81,7 +80,7 @@ export class ProcessService implements IProcessService {
 
     public execObservable(file: string, args: string[], options: SpawnOptions = {}): ObservableExecutionResult<string> {
         const spawnOptions = this.getDefaultOptions(options);
-        const proc = spawn(fileToCommandArgument(file), args, spawnOptions);
+        const proc = spawn(file, args, spawnOptions);
         let procExited = false;
         logger.ci(`Exec observable ${file}, ${args.join(' ')}`);
         const disposables: IDisposable[] = [];
@@ -156,7 +155,7 @@ export class ProcessService implements IProcessService {
     }
     public exec(file: string, args: string[], options: SpawnOptions = {}): Promise<ExecutionResult<string>> {
         const spawnOptions = this.getDefaultOptions(options);
-        const proc = spawn(fileToCommandArgument(file), args, spawnOptions);
+        const proc = spawn(file, args, spawnOptions);
         const deferred = createDeferred<ExecutionResult<string>>();
         const disposable: IDisposable = {
             dispose: () => {