From aa51526739e04b67a07a9a50c60e72660c476968 Mon Sep 17 00:00:00 2001
From: Plastic-time <247457381+Plastic-time@users.noreply.github.com>
Date: Tue, 20 Oct 2026 14:33:16 -0400
Subject: [PATCH] fix: treat ignored s as a literal character

---
 src/lib/isAlpha.js          |  2 +-
 src/lib/isAlphanumeric.js   |  2 +-
 test/literal-ignore.test.js | 27 +++++++++++++++++++++++++++
 3 files changed, 29 insertions(+), 2 deletions(-)
 create mode 100644 test/literal-ignore.test.js

diff --git a/src/lib/isAlpha.js b/src/lib/isAlpha.js
index e961e64eb..aeb5d8747 100644
--- a/src/lib/isAlpha.js
+++ b/src/lib/isAlpha.js
@@ -11,7 +11,7 @@ export default function isAlpha(_str, locale = 'en-US', options = {}) {
     if (ignore instanceof RegExp) {
       str = str.replace(ignore, '');
     } else if (typeof ignore === 'string') {
-      str = str.replace(new RegExp(`[${ignore.replace(/[-[\]{}()*+?.,\\^$|#\\s]/g, '\\$&')}]`, 'g'), ''); // escape regex for ignore
+      str = str.replace(new RegExp(`[${ignore.replace(/[-[\]{}()*+?.,\\^$|#]/g, '\\$&')}]`, 'g'), ''); // escape regex for ignore
     } else {
       throw new Error('ignore should be instance of a String or RegExp');
     }
diff --git a/src/lib/isAlphanumeric.js b/src/lib/isAlphanumeric.js
index b259ab908..6382b31a1 100644
--- a/src/lib/isAlphanumeric.js
+++ b/src/lib/isAlphanumeric.js
@@ -11,7 +11,7 @@ export default function isAlphanumeric(_str, locale = 'en-US', options = {}) {
     if (ignore instanceof RegExp) {
       str = str.replace(ignore, '');
     } else if (typeof ignore === 'string') {
-      str = str.replace(new RegExp(`[${ignore.replace(/[-[\]{}()*+?.,\\^$|#\\s]/g, '\\$&')}]`, 'g'), ''); // escape regex for ignore
+      str = str.replace(new RegExp(`[${ignore.replace(/[-[\]{}()*+?.,\\^$|#]/g, '\\$&')}]`, 'g'), ''); // escape regex for ignore
     } else {
       throw new Error('ignore should be instance of a String or RegExp');
     }
diff --git a/test/literal-ignore.test.js b/test/literal-ignore.test.js
new file mode 100644
index 000000000..cffe5268d
--- /dev/null
+++ b/test/literal-ignore.test.js
@@ -0,0 +1,27 @@
+import assert from 'assert';
+import validator from '../index';
+
+['isAlpha', 'isAlphanumeric'].forEach((method) => {
+  describe(`${method} literal ignored characters`, () => {
+    it('does not treat an ignored s as whitespace', () => {
+      [' ', '\t', '\n', '\r', '\u00a0'].forEach((space) => {
+        assert.strictEqual(validator[method](`ab${space}cd`, 'en-US', { ignore: 's' }), false);
+      });
+    });
+
+    it('removes a literal s outside the selected alphabet', () => {
+      assert.strictEqual(validator[method]('\u0430s\u0431', 'ru-RU', { ignore: 's' }), true);
+    });
+
+    it('continues to escape regular expression metacharacters', () => {
+      const ignore = '-[]{}()*+?.,\\^$|#';
+      assert.strictEqual(validator[method](`ab${ignore}cd`, 'en-US', { ignore }), true);
+    });
+
+    it('only ignores whitespace when explicitly requested', () => {
+      assert.strictEqual(validator[method]('ab cd', 'en-US', { ignore: ' ' }), true);
+      assert.strictEqual(validator[method]('ab\tcd', 'en-US', { ignore: ' ' }), false);
+      assert.strictEqual(validator[method]('ab\tcd', 'en-US', { ignore: /\s/g }), true);
+    });
+  });
+});