English and arabic ebook possible?

Hello Guys, nice to have found such a great forum.

ive always wondered if it would be possible to convert pdf´s that contain english and arabic sentences in it.

its always a pain when in convert the pdf the arabic font and letters are a complete mess but the english part is just fine.

i guess it has something to do with the right-to-left text direction and the font.
but i cant believe that since ebook there are no further development in that regard.

hope there is an solution to that problem.
best greetings