fix(coding-agent): support -- end-of-options, closes #7269

packages/coding-agent/src/cli/args.ts

@@ -79,7 +79,16 @@ export function parseArgs(args: string[]): Args {
 	for (let i = 0; i < args.length; i++) {
 		const arg = args[i];
 
-		if (arg === "--help" || arg === "-h") {
+		if (arg === "--") {
+			for (const positionalArg of args.slice(i + 1)) {
+				if (positionalArg.startsWith("@")) {
+					result.fileArgs.push(positionalArg.slice(1));
+				} else {
+					result.messages.push(positionalArg);
+				}
+			}
+			break;
+		} else if (arg === "--help" || arg === "-h") {
 			result.help = true;
 		} else if (arg === "--version" || arg === "-v") {
 			result.version = true;

packages/coding-agent/test/suite/regressions/7269-cli-end-of-options.test.ts

@@ -0,0 +1,39 @@
+import { fauxAssistantMessage } from "@earendil-works/pi-ai";
+import { afterEach, describe, expect, it } from "vitest";
+import { parseArgs } from "../../../src/cli/args.ts";
+import { createHarness, getUserTexts, type Harness } from "../harness.ts";
+
+describe("issue #7269 CLI end-of-options delimiter", () => {
+	let harness: Harness | undefined;
+
+	afterEach(() => {
+		harness?.cleanup();
+		harness = undefined;
+	});
+
+	it.each(["- summarize the following points for me", "--answer my question briefly"])(
+		"passes %j as a prompt after --",
+		async (prompt) => {
+			const parsed = parseArgs(["-ne", "--no-session", "-p", "--", prompt]);
+			expect(parsed.messages).toEqual([prompt]);
+			expect(parsed.unknownFlags.size).toBe(0);
+			expect(parsed.diagnostics).toEqual([]);
+
+			harness = await createHarness();
+			harness.setResponses([fauxAssistantMessage("ok")]);
+			await harness.session.prompt(parsed.messages[0]);
+			expect(getUserTexts(harness)).toEqual([prompt]);
+		},
+	);
+
+	it("stops parsing options while retaining @file handling", () => {
+		const parsed = parseArgs(["--unknown-flag", "value", "--", "--provider", "openai", "-c", "@prompt.md"]);
+
+		expect(parsed.unknownFlags.get("unknown-flag")).toBe("value");
+		expect(parsed.provider).toBeUndefined();
+		expect(parsed.continue).toBeUndefined();
+		expect(parsed.messages).toEqual(["--provider", "openai", "-c"]);
+		expect(parsed.fileArgs).toEqual(["prompt.md"]);
+		expect(parsed.diagnostics).toEqual([]);
+	});
+});