Preserve -- in process.argv

src/deps/zig-clap/clap/comptime.zig

@@ -78,12 +78,7 @@ pub fn ComptimeClap(
                 if (param.names.long == null and param.names.short == null) {
                     try pos.append(arg.value.?);
                     if (opt.stop_after_positional_at > 0 and pos.items.len >= opt.stop_after_positional_at) {
-                        var remaining_ = stream.iter.remain;
-                        const first: []const u8 = if (remaining_.len > 0) bun.span(remaining_[0]) else "";
-                        if (first.len > 0 and std.mem.eql(u8, first, "--")) {
-                            remaining_ = remaining_[1..];
-                        }
-
+                        const remaining_ = stream.iter.remain;
                         try passthrough_positionals.ensureTotalCapacityPrecise(remaining_.len);
                         for (remaining_) |arg_| {
                             // use bun.span due to the optimization for long strings

test/cli/install/bun-run.test.ts

@@ -484,6 +484,35 @@ it("--ignore-dce-annotations ignores DCE annotations", () => {
   expect(stdout.toString()).toBe("Hello, world!\n");
 });
 
+it("should preserve '--' in process.argv", async () => {
+  await mkdir(join(run_dir, "subdir"));
+  await writeFile(
+    join(run_dir, "subdir", "test.js"),
+    `
+    console.log(process.argv);
+  `,
+  );
+
+  const { stdout } = spawn({
+    cmd: [bunExe(), "run", "subdir/test.js", "--", "rest", "--foo=bar"],
+    cwd: run_dir,
+    env: {
+      ...env,
+      BUN_INSTALL_CACHE_DIR: join(run_dir, ".cache"),
+    },
+  });
+
+  const text = await Bun.readableStreamToText(stdout);
+
+  const cleanedText = text.replace(/\n/g, "");
+  const argv = JSON.parse(cleanedText);
+
+  // the first argv is bun exe path
+  // the second argv is the script name
+  expect(argv[2]).toBe("--");
+  expect(argv[3]).toBe("rest");
+  expect(argv[4]).toBe("--foo=bar");
+
 it("$npm_command is accurate", async () => {
   await writeFile(
     join(run_dir, "package.json"),