Initial commit

Signed-off-by: Ilan Bigio <ilan@openai.com>

codex-cli/tests/text-buffer-crlf.test.ts

@@ -0,0 +1,14 @@
+import TextBuffer from "../src/lib/text-buffer.js";
+import { describe, it, expect } from "vitest";
+
+describe("TextBuffer – newline normalisation", () => {
+  it("insertStr should split on \r and \r\n sequences", () => {
+    const buf = new TextBuffer("");
+
+    // Windows‑style CRLF
+    buf.insertStr("ab\r\ncd\r\nef");
+
+    expect(buf.getLines()).toEqual(["ab", "cd", "ef"]);
+    expect(buf.getCursor()).toEqual([2, 2]); // after 'f'
+  });
+});