How to detect whether a character belongs to a Right To Left language?

Question

What is a good way to tell whether a string contains text in a Right To Left language.

I have found this question which suggests the following approach:

Answer 1

EDIT:

This is what I use now, it includes the Vowelization chars and everything in Hebrew and Arabic:

[\u0591-\u07FF]

OLD ANSWER:

If you need to detect RTL language in a sentence, this simplified RegEx will probably be enough:

[א-ת؀-ۿ]

If one wants to write something in Hebrew it will have to use one of these characters, and the case is similar with Arabic.

It does not include vowelization characters, so if you need to catch all whole words or absolutely all RTL chars you better use one of the other answers. Vowelization chars in Hebrew are very rare in non-poetry texts. I don't know about Arabic texts.