Question

I’m using permalinks in WP as: domain.com/category/post_name

The issue is that post names have non-latin characters such as chinese, hebrew, and arabic. So it encodes them to something like: %20%18%6b%20 therefore it counts every symbol’s character as an actual character, ending up with 3x times more length that it truncates some very short slugs.

How to fix that? Or at least how to extend the length limit at least? I’ve tried to extend the length of the database field “post_name” from 200 to 500, But it’s still truncating short.

Answer 1

You can change post_name by appling the filters for sanitize_title…
Short example:

add_filter('sanitize_title', 'sanitize_title_custom', 10, 3);
function sanitize_title_custom($title, $raw_title, $context){
    // do some proccesing with title or raw_title
    // assign new result to $title ($title = str_replace(" ","-", $raw_title);// as example )
    return $title;
}

but, be careful… bad sanitizing can be security risk… sql injections etc…