Fix quoting for tasks (microsoft#142400)

Fixes microsoft#142196

Author: alexr00

src/vs/workbench/contrib/tasks/browser/terminalTaskSystem.ts

@@ -1353,7 +1353,8 @@ export class TerminalTaskSystem extends Disposable implements ITaskSystem {
 	}
 
 	private buildShellCommandLine(platform: Platform.Platform, shellExecutable: string, shellOptions: ShellConfiguration | undefined, command: CommandString, originalCommand: CommandString | undefined, args: CommandString[]): string {
-		let shellQuoteOptions = this.getQuotingOptions(shellExecutable, shellOptions, platform);
+		const basename = path.parse(shellExecutable).name.toLowerCase();
+		const shellQuoteOptions = this.getQuotingOptions(basename, shellOptions, platform);
 
 		function needsQuotes(value: string): boolean {
 			if (value.length >= 2) {
@@ -1440,9 +1441,9 @@ export class TerminalTaskSystem extends Disposable implements ITaskSystem {
 		let commandLine = result.join(' ');
 		// There are special rules quoted command line in cmd.exe
 		if (platform === Platform.Platform.Windows) {
-			if (shellExecutable === 'cmd' && commandQuoted && argQuoted) {
+			if (basename === 'cmd' && commandQuoted && argQuoted) {
 				commandLine = '"' + commandLine + '"';
-			} else if ((shellExecutable === 'powershell' || shellExecutable === 'pwsh') && commandQuoted) {
+			} else if ((basename === 'powershell' || basename === 'pwsh') && commandQuoted) {
 				commandLine = '& ' + commandLine;
 			}
 		}