fix: normalize CRLF line endings in prompt file parser

core/promptFiles/parsePromptFile.ts

@@ -3,7 +3,8 @@ import * as YAML from "yaml";
 import { getLastNPathParts } from "../util/uri";
 
 export function parsePromptFile(path: string, content: string) {
-  let [preambleRaw, prompt] = content.split("\n---\n");
+  const normalizedContent = content.replace(/\r\n/g, "\n");
+  let [preambleRaw, prompt] = normalizedContent.split("\n---\n");
   if (prompt === undefined) {
     prompt = preambleRaw;
     preambleRaw = "";

core/promptFiles/parsePromptFile.vitest.ts

@@ -0,0 +1,37 @@
+import { describe, expect, it } from "vitest";
+import { parsePromptFile } from "./parsePromptFile";
+
+describe("parsePromptFile", () => {
+  const path = "test.prompt";
+
+  it("should parse LF content correctly", () => {
+    const content = "name: test\ndescription: a test\n---\nHello world";
+    const result = parsePromptFile(path, content);
+    expect(result.name).toBe("test");
+    expect(result.description).toBe("a test");
+    expect(result.prompt).toBe("Hello world");
+  });
+
+  it("should parse CRLF content correctly", () => {
+    const content = "name: test\r\ndescription: a test\r\n---\r\nHello world";
+    const result = parsePromptFile(path, content);
+    expect(result.name).toBe("test");
+    expect(result.description).toBe("a test");
+    expect(result.prompt).toBe("Hello world");
+  });
+
+  it("should handle no frontmatter", () => {
+    const content = "Just a prompt";
+    const result = parsePromptFile(path, content);
+    expect(result.prompt).toBe("Just a prompt");
+    expect(result.name).toBe("test");
+  });
+
+  it("should parse system tag with CRLF", () => {
+    const content =
+      "name: test\r\n---\r\n<system>You are helpful</system>\r\nHello";
+    const result = parsePromptFile(path, content);
+    expect(result.systemMessage).toBe("You are helpful");
+    expect(result.prompt).toBe("Hello");
+  });
+});