[ticket/13713] Add mention BBCode

PHPBB3-13713

phpBB/phpbb/textformatter/s9e/factory.php

@@ -84,6 +84,12 @@ class factory implements \phpbb\textformatter\cache_interface
 		'img'   => '[IMG src={IMAGEURL;useContent}]',
 		'list'  => '[LIST type={HASHMAP=1:decimal,a:lower-alpha,A:upper-alpha,i:lower-roman,I:upper-roman;optional;postFilter=#simpletext} #createChild=LI]{TEXT}[/LIST]',
 		'li'    => '[* $tagName=LI]{TEXT}[/*]',
+		'mention' =>
+			"[MENTION
+				group_id={UINT;optional}
+				profile_url={URL;optional;postFilter=#false}
+				user_id={UINT;optional}
+			]{TEXT}[/MENTION]",
 		'quote' =>
 			"[QUOTE
 				author={TEXT1;optional}