From a1aa1472cb59cfee1b0123950367e5f30e01390b Mon Sep 17 00:00:00 2001
From: louiellan <louie.lou.llaneta@gmail.com>
Date: Thu, 21 May 2026 06:09:43 +0800
Subject: [PATCH] fs: fix `glob` case-sensitivity inconsistencies

where the `exclude` option is case sensitive but the `pattern` is a
case insensitive operation (on Windows and MacOS), thus results to
any casing difference in matched list not to be filtered out and does
not return the true casing of a matched directory / file

Signed-off-by: louiellan <louie.lou.llaneta@gmail.com>
---
 lib/internal/fs/glob.js        |  2 +-
 test/parallel/test-fs-glob.mjs | 53 ++++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+), 1 deletion(-)

diff --git a/lib/internal/fs/glob.js b/lib/internal/fs/glob.js
index c5bbdb9813c0d1..64c1fb596f7522 100644
--- a/lib/internal/fs/glob.js
+++ b/lib/internal/fs/glob.js
@@ -118,7 +118,7 @@ function createMatcher(pattern, options = kEmptyObject) {
     nocomment: true,
     optimizationLevel: 2,
     platform: process.platform,
-    nocaseMagicOnly: true,
+    nocaseMagicOnly: (!isWindows && !isMacOS),
     ...options,
   };
   return new (lazyMinimatch().Minimatch)(pattern, opts);
diff --git a/test/parallel/test-fs-glob.mjs b/test/parallel/test-fs-glob.mjs
index 560b4e72e4adec..d091304151d549 100644
--- a/test/parallel/test-fs-glob.mjs
+++ b/test/parallel/test-fs-glob.mjs
@@ -484,6 +484,59 @@ const patterns2 = [
   [ 'a/**', [ '*' ], [] ],
   [ 'a/**', [ '**' ], [] ],
   [ 'a/**', [ 'a/**' ], [] ],
+  ...((common.isWindows || common.isMacOS) ?
+    // on Windows or MacOS
+    [
+      ['a/b', ['A/B'], []],
+      ['a/b*', ['A/B'], ['a/bc']],
+      ['A*/B', ['A/B'], []],
+      ['a*/B', ['A/B'], []],
+      ['a*/b', ['A/B'], []],
+
+      ['A/B', ['a/b'], []],
+      ['A/B*', ['a/b'], ['a/bc']],
+      ['A*/B', ['a/b'], []],
+      ['a*/B', ['a/b'], []],
+      ['A*/b', ['a/b'], []],
+
+      ['a/b', ['A/B*'], []],
+      ['a/b*', ['A/B*'], []],
+      ['A*/B', ['A/B*'], []],
+      ['a*/B', ['A/B*'], []],
+      ['a*/b', ['A/B*'], []],
+
+      ['A/B', ['a/b*'], []],
+      ['A/B*', ['a/b*'], []],
+      ['A*/B', ['a/b*'], []],
+      ['a*/B', ['a/b*'], []],
+      ['A*/b', ['a/b*'], []],
+
+      ['a/b', ['A*/B'], []],
+      ['a/b*', ['A*/B'], ['a/bc']],
+      ['A*/B', ['A*/B'], []],
+      ['a*/B', ['A*/B'], []],
+      ['a*/b', ['A*/B'], []],
+
+      ['A/B', ['a*/b'], []],
+      ['A/B*', ['a*/b'], ['a/bc']],
+      ['A*/B', ['a*/b'], []],
+      ['a*/B', ['a*/b'], []],
+      ['A*/b', ['a*/b'], []],
+
+      ['a/b', ['A/{B,C}'], []],
+      ['a/b*', ['A/{B,C}'], ['a/bc']],
+      ['A*/B', ['A/{B,C}'], []],
+      ['a*/B', ['A/{B,C}'], []],
+      ['a*/b', ['A/{B,C}'], []],
+
+      ['A/B', ['a/{b,c}'], []],
+      ['A/B*', ['a/{b,c}'], ['a/bc']],
+      ['A*/B', ['a/{b,c}'], []],
+      ['a*/B', ['a/{b,c}'], []],
+      ['A*/b', ['a/{b,c}'], []],
+
+    ] : []
+  ),
 ];
 
 describe('globSync - exclude', function() {