document viewer search problem in right to left languages

Hi
when I use the search functionality in document viewer, it searches the letters as if they are written left to right. That is not a problem in english or any left to right language. However, this is a problem in right to left languages. I used it particularly with arabic but I guess it is the same for any other right to left language.
In order for the program to detect a right to left word, the word needs to be written in reverse in the search box.
I will give an english example since the words are easier to understand by everyone but the problem actually only occurs with right to left languages.
if I want to search for the word 'hello', I need to type it in reverse as 'olleh' in the search box.

I am using ubuntu 12.04.

Thank you in advance