From 6358aae024ed8f1d0270a8590fdb009b4906f061 Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Mon, 2 Mar 2026 21:55:03 +0000
Subject: [PATCH] refactor(infra): share windows path normalization helper

---
 src/agents/path-policy.ts | 12 +-----------
 src/infra/path-guards.ts  |  2 +-
 2 files changed, 2 insertions(+), 12 deletions(-)

diff --git a/src/agents/path-policy.ts b/src/agents/path-policy.ts
index 042cff7ff4f..be0e1ffd7ed 100644
--- a/src/agents/path-policy.ts
+++ b/src/agents/path-policy.ts
@@ -1,4 +1,5 @@
 import path from "node:path";
+import { normalizeWindowsPathForComparison } from "../infra/path-guards.js";
 import { resolveSandboxInputPath } from "./sandbox-paths.js";
 
 type RelativePathOptions = {
@@ -8,17 +9,6 @@ type RelativePathOptions = {
   includeRootInError?: boolean;
 };
 
-function normalizeWindowsPathForComparison(input: string): string {
-  let normalized = path.win32.normalize(input);
-  if (normalized.startsWith("\\\\?\\")) {
-    normalized = normalized.slice(4);
-    if (normalized.toUpperCase().startsWith("UNC\\")) {
-      normalized = `\\\\${normalized.slice(4)}`;
-    }
-  }
-  return normalized.replaceAll("/", "\\").toLowerCase();
-}
-
 function toRelativePathUnderRoot(params: {
   root: string;
   candidate: string;
diff --git a/src/infra/path-guards.ts b/src/infra/path-guards.ts
index 751da0a9db0..a2f88a1532c 100644
--- a/src/infra/path-guards.ts
+++ b/src/infra/path-guards.ts
@@ -3,7 +3,7 @@ import path from "node:path";
 const NOT_FOUND_CODES = new Set(["ENOENT", "ENOTDIR"]);
 const SYMLINK_OPEN_CODES = new Set(["ELOOP", "EINVAL", "ENOTSUP"]);
 
-function normalizeWindowsPathForComparison(input: string): string {
+export function normalizeWindowsPathForComparison(input: string): string {
   let normalized = path.win32.normalize(input);
   if (normalized.startsWith("\\\\?\\")) {
     normalized = normalized.slice(4);