Arabic / Persian bug

[pajuhaan]

This function removes all pure Persian and Arabic characters:
function clean(string $value, bool $allowHTML = false): ?string
{
$value = trim($value);

**//Ignore empty texts or with no regular characters
if ($value === '' || !preg_match('/\w/', $value)) {
    return null;
}**

[oscarotero]

Thanks for notify this.
The purpose of this function is avoid values like -- that I found in some cases but I can remove it, unless there's another way to detect regular characters of any alphabet. Any idea?

[oscarotero]

Fixed in 4.2.3