Arabic diacritic unicode characters break title links

Question

Arabic diacritics are passing the filter, giving the ability to write almost an empty title or an empty body of a post. I think it has to be filtered before submitting.

When writing Arabic and using them, they are supposed to be used with letters (on َtَoَp or ِbِoِtِtِoِm), they can never be used alone anyway. Still, when adding them alone in the title and then add some in the body, they pass the filter. When only added in the title, they will not pass the filter

Not sure if the same happens with diacritics from other languages as well.

One thing to notice, these characters are not clickable in the questions page.ََََََََِِِِِِِِِِِِِِِِِِِِِِِِِِِِِِِّّّ ََََََََِِِِِِِِِِِِِِِِِِِِِِِِِِِِِِِّّّ

Answer 1

Yup, you found something that is definitely annoying but it's not worth it to fix it.

In the words of Jeff:

The short answer is "don't do that", and the longer answer is "if you keep doing that, there will be consequences."

I'll just reiterate what he said with this:

Answer 2

Apparently, the link has a special character that cannot be chosen. What I mean by that is that if you try to highlight or delete this special letter, it will simply not disappear. To me, this means that this is a valid character but would not be able to be linked by the system.

The special character:

Seemingly, SOUP has already has this fixed so a quick transfer from there to the actual system should render these characters fixable.

I had no trouble clicking the title, but that turns out to be because of SOUP, which makes the entire title block clickable. - Ilmari Karonen

The link seems to think that the letter of this question's title is:

%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%90%D9%91%D9%91%D9%91%D9%8E%D9%8E%D9%8E%D9%8E%D9%8E%D9%8E%D9%8E%D9%8E

It would make sense that you would not be able to link something to that string of characters. What I think the system feels about unicode titles:

Clearly the unicorn's name is Evil Unicode not Twinicode hence uni corn and uni code instead of twin icode.