Fixes microsoft#273177

Author: hediet

src/vs/workbench/contrib/terminalContrib/chatAgentTools/browser/commandSimplifier.ts

@@ -84,7 +84,8 @@ export class CommandSimplifier {
 	private async _rewriteUnsupportedPwshChainOperators(commandLine: string, os: OperatingSystem, shell: string) {
 		// TODO: This should just be Windows PowerShell in the future when the powershell grammar
 		// supports chain operators https://github.com/airbus-cert/tree-sitter-powershell/issues/27
-		if (isPowerShell(shell, os)) {
+		const disablePowerShellRewrites = true; // see https://github.com/microsoft/vscode/issues/273177
+		if (!disablePowerShellRewrites && isPowerShell(shell, os)) {
 			const doubleAmpersandCaptures = await this._treeSitterCommandParser.queryTree(TreeSitterCommandParserLanguage.PowerShell, commandLine, [
 				'(',
 				'  (command',

src/vs/workbench/contrib/terminalContrib/chatAgentTools/browser/treeSitterCommandParser.ts

@@ -24,26 +24,32 @@ export class TreeSitterCommandParser {
 	}
 
 	async extractSubCommands(languageId: TreeSitterCommandParserLanguage, commandLine: string): Promise<string[]> {
-		const parser = await this._parser;
-		const language = await waitForState(derived(reader => {
-			return this._treeSitterLibraryService.getLanguage(languageId, true, reader);
-		}));
-		parser.setLanguage(language);
+		const disableSubCommandExtraction = true; // see https://github.com/microsoft/vscode/issues/273177
 
-		const tree = parser.parse(commandLine);
-		if (!tree) {
-			throw new BugIndicatingError('Failed to parse tree');
-		}
+		if (disableSubCommandExtraction) {
+			throw new Error('not supported');
+		} else {
+			const parser = await this._parser;
+			const language = await waitForState(derived(reader => {
+				return this._treeSitterLibraryService.getLanguage(languageId, true, reader);
+			}));
+			parser.setLanguage(language);
 
-		const query = await this._getQuery(language);
-		if (!query) {
-			throw new BugIndicatingError('Failed to create tree sitter query');
-		}
+			const tree = parser.parse(commandLine);
+			if (!tree) {
+				throw new BugIndicatingError('Failed to parse tree');
+			}
 
-		const captures = query.captures(tree.rootNode);
-		const subCommands = captures.map(e => e.node.text);
+			const query = await this._getQuery(language);
+			if (!query) {
+				throw new BugIndicatingError('Failed to create tree sitter query');
+			}
+
+			const captures = query.captures(tree.rootNode);
+			const subCommands = captures.map(e => e.node.text);
 
-		return subCommands;
+			return subCommands;
+		}
 	}
 
 	async queryTree(languageId: TreeSitterCommandParserLanguage, commandLine: string, querySource: string): Promise<QueryCapture[]> {