From 191140e90ffd5c27413707964f4736f153cd63b1 Mon Sep 17 00:00:00 2001
From: amtbsl <147152854+amtbsl@users.noreply.github.com>
Date: Sat, 29 Aug 2026 13:37:06 +0800
Subject: [PATCH 1/2] fix: fall back to PATH on Windows

---
 lib/index.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/index.js b/lib/index.js
index 2fd358b..4ffbb11 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -20,12 +20,13 @@ const getPathInfo = (cmd, {
   pathExt: optPathExt = process.env.PATHEXT,
   delimiter: optDelimiter = delimiter,
 }) => {
+  const pathEnvValue = optPath === undefined && isWindows ? process.env.Path : optPath
   // If it has a slash, then we don't bother searching the pathenv.
   // just check the file itself, and that's it.
   const pathEnv = cmd.match(rSlash) ? [''] : [
     // windows always checks the cwd first
     ...(isWindows ? [process.cwd()] : []),
-    ...(optPath || /* istanbul ignore next: very unusual */ '').split(optDelimiter),
+    ...(pathEnvValue || /* istanbul ignore next: very unusual */ '').split(optDelimiter),
   ]
 
   if (isWindows) {

From b5cf664ced61f45f6e9d16edaaf54be2124ecc49 Mon Sep 17 00:00:00 2001
From: amtbsl <147152854+amtbsl@users.noreply.github.com>
Date: Sat, 29 Aug 2026 13:37:13 +0800
Subject: [PATCH 2/2] test: cover Windows Path fallback

---
 test/index.js | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/test/index.js b/test/index.js
index c77fed5..0fea714 100644
--- a/test/index.js
+++ b/test/index.js
@@ -4,7 +4,7 @@ const fs = require('fs')
 const { basename, join, relative, sep, delimiter } = require('path')
 const isWindows = process.platform === 'win32'
 
-const ENV_VARS = { PATH: process.env.PATH, PATHEXT: process.env.PATHEXT }
+const ENV_VARS = { PATH: process.env.PATH, Path: process.env.Path, PATHEXT: process.env.PATHEXT }
 const PLATFORM = Object.getOwnPropertyDescriptor(process, 'platform')
 
 const runTest = async (t, exec, expect, { platforms = ['posix', 'win32'], ..._opt } = {}) => {
@@ -114,6 +114,19 @@ t.test('find when executable', async t => {
   })
 })
 
+t.test('falls back to process.env.Path on Windows', async t => {
+  const fixture = t.testdir({ 'foo.sh': 'echo foo\n' })
+  const foo = join(fixture, 'foo.sh')
+  fs.chmodSync(foo, 0o755)
+  delete process.env.PATH
+  process.env.Path = fixture
+
+  await runTest(t, basename(foo), foo, {
+    platforms: ['win32'],
+    pathExt: '.sh',
+  })
+})
+
 t.test('find all', async t => {
   const cmdName = 'x.cmd'
   const fixture = t.testdir({