Add picker to sendSequence command

Fixes microsoft#250669

Author: Tyriar

src/vs/workbench/contrib/terminal/browser/terminalActions.ts

@@ -121,15 +121,43 @@ export async function getCwdForSplit(
 }
 
 export const terminalSendSequenceCommand = async (accessor: ServicesAccessor, args: unknown) => {
-	const instance = accessor.get(ITerminalService).activeInstance;
+	const quickInputService = accessor.get(IQuickInputService);
+	const configurationResolverService = accessor.get(IConfigurationResolverService);
+	const workspaceContextService = accessor.get(IWorkspaceContextService);
+	const historyService = accessor.get(IHistoryService);
+	const terminalService = accessor.get(ITerminalService);
+
+	const instance = terminalService.activeInstance;
 	if (instance) {
-		const text = isObject(args) && 'text' in args ? toOptionalString(args.text) : undefined;
+		let text = isObject(args) && 'text' in args ? toOptionalString(args.text) : undefined;
+
+		// If no text provided, prompt user for input and process special characters
 		if (!text) {
-			return;
+			text = await quickInputService.input({
+				value: '',
+				placeHolder: 'Enter sequence to send (supports \\n, \\r, \\x{AB})',
+				prompt: localize('workbench.action.terminal.sendSequence.prompt', "Enter sequence to send to the terminal"),
+			});
+			if (!text) {
+				return;
+			}
+			// Process escape sequences
+			let processedText = text
+				.replace(/\\n/g, '\n')
+				.replace(/\\r/g, '\r');
+
+			// Process hex escape sequences (\xNN)
+			while (true) {
+				const match = processedText.match(/\\x([0-9a-fA-F]{2})/);
+				if (match === null || match.index === undefined || match.length < 2) {
+					break;
+				}
+				processedText = processedText.slice(0, match.index) + String.fromCharCode(parseInt(match[1], 16)) + processedText.slice(match.index + 4);
+			}
+
+			text = processedText;
 		}
-		const configurationResolverService = accessor.get(IConfigurationResolverService);
-		const workspaceContextService = accessor.get(IWorkspaceContextService);
-		const historyService = accessor.get(IHistoryService);
+
 		const activeWorkspaceRootUri = historyService.getLastActiveWorkspaceRoot(instance.isRemote ? Schemas.vscodeRemote : Schemas.file);
 		const lastActiveWorkspaceRoot = activeWorkspaceRootUri ? workspaceContextService.getWorkspaceFolder(activeWorkspaceRootUri) ?? undefined : undefined;
 		const resolvedText = await configurationResolverService.resolveAsync(lastActiveWorkspaceRoot, text);
@@ -1007,7 +1035,7 @@ export function registerTerminalActions() {
 	registerTerminalAction({
 		id: TerminalCommandId.SendSequence,
 		title: terminalStrings.sendSequence,
-		f1: false,
+		f1: true,
 		metadata: {
 			description: terminalStrings.sendSequence.value,
 			args: [{

src/vs/workbench/contrib/terminal/common/terminalStrings.ts

@@ -36,7 +36,7 @@ export const terminalStrings = {
 	rename: localize2('workbench.action.terminal.rename', "Rename..."),
 	toggleSizeToContentWidth: localize2('workbench.action.terminal.sizeToContentWidthInstance', "Toggle Size to Content Width"),
 	focusHover: localize2('workbench.action.terminal.focusHover', "Focus Hover"),
-	sendSequence: localize2('workbench.action.terminal.sendSequence', "Send Custom Sequence to Terminal"),
+	sendSequence: localize2('workbench.action.terminal.sendSequence', "Send Sequence"),
 	sendSignal: localize2('workbench.action.terminal.sendSignal', "Send Signal"),
 	newWithCwd: localize2('workbench.action.terminal.newWithCwd', "Create New Terminal Starting in a Custom Working Directory"),
 	renameWithArgs: localize2('workbench.action.terminal.renameWithArg', "Rename the Currently Active Terminal"),