No, that's fine, like any other 40 rules, as a single string comparison using regular expressions.
, UTF-8, , ASCII. /عربية /%D8%B9%D8%B1%D8%A8%D9%8A%D8%A9, عربية UTF-8.
, UTF-8, . , URL-, , - -, , UTF-8, , , :
<a href="http://example.com/عربية">
عربية , .