From 05ff99f2e61bd44af1646020a6a85299304d97f7 Mon Sep 17 00:00:00 2001
From: Laurent Destailleur <eldy@destailleur.fr>
Date: Tue, 25 Jan 2022 16:03:30 +0100
Subject: [PATCH] Update user.class.php

---
 htdocs/user/class/user.class.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/htdocs/user/class/user.class.php b/htdocs/user/class/user.class.php
index a9dcbfe3b87..cd38b9f2d66 100644
--- a/htdocs/user/class/user.class.php
+++ b/htdocs/user/class/user.class.php
@@ -1789,7 +1789,7 @@ class User extends CommonObject
 		$this->fk_warehouse = (int) $this->fk_warehouse;
 
 		// Check parameters
-		$badCharUnauthorizedIntoLoginName = getDolGlobalString('MAIN_LOGIN_BADCHARUNAUTHORIZED', '/[,@<>"\']/');
+		$badCharUnauthorizedIntoLoginName = getDolGlobalString('MAIN_LOGIN_BADCHARUNAUTHORIZED', ',@<>"\'');
 
 		if (!empty($conf->global->USER_MAIL_REQUIRED) && !isValidEMail($this->email)) {
 			$langs->load("errors");
@@ -1800,7 +1800,7 @@ class User extends CommonObject
 			$langs->load("errors");
 			$this->error = $langs->trans("ErrorFieldRequired", 'Login');
 			return -1;
-		} elseif (preg_match($badCharUnauthorizedIntoLoginName, $this->login)) {
+		} elseif (preg_match('/['.preg_quote($badCharUnauthorizedIntoLoginName, '/').']/', $this->login)) {
 			$langs->load("errors");
 			$this->error = $langs->trans("ErrorBadCharIntoLoginName");
 			return -1;