🐛 Allow @ as part of url

Author: rudnerbjoern

core/attributedef.class.inc.php

@@ -8165,7 +8165,7 @@ class AttributeURL extends AttributeString
 	 * @since 3.0.3 moved from Config to AttributeURL constant
 	 */
 	public const DEFAULT_VALIDATION_PATTERN = /** @lang RegExp */
-		'(https?|ftp)\://([a-zA-Z0-9+!*(),;?&=\$_.-]+(\:[a-zA-Z0-9+!*(),;?&=\$_.-]+)?@)?([a-zA-Z0-9-.]{3,})(\:[0-9]{2,5})?(/([a-zA-Z0-9:%+\$_-]\.?)+)*/?(\?[a-zA-Z+&\$_.-][a-zA-Z0-9;:[\]@&%=+/\$_.,-]*)?(#[a-zA-Z0-9_.-][a-zA-Z0-9+\$_.-]*)?';
+		'(https?|ftp)\://([a-zA-Z0-9+!*(),;?&=\$_.-]+(\:[a-zA-Z0-9+!*(),;?&=\$_.-]+)?@)?([a-zA-Z0-9-.]{3,})(\:[0-9]{2,5})?(/([a-zA-Z0-9:%@+\$_-]\.?)+)*/?(\?[a-zA-Z+&\$_.-][a-zA-Z0-9;:[\]@&%=+/\$_.,-]*)?(#[a-zA-Z0-9_.-][a-zA-Z0-9+\$_.-]*)?';
 
 	/**
 	 * Useless constructor, but if not present PHP 7.4.0/7.4.1 is crashing :( (N°2329)