Regex search \. or '.' on wide characters doesn't detect

What steps will reproduce the problem?
1. file with unicode string 'hello.com'
2. regex search eg $url = /\w+\.com$/ wide
3. run yara search to find no result

What is the expected output? What do you see instead?
expected result is the url match. instead it returns with no result. the 
problem lies in the wide character '.' not matching

What version of the product are you using? On what operating system?
Pythoon 2.7 with yara version 1.5

Please provide any additional information below.
I haven't tried with other characters in the wide character set but it may be 
the same issue with them as well

Original issue reported on code.google.com by return.t...@gmail.com on 6 Jun 2011 at 12:15

odin1314 / yara-project

Regex search \. or '.' on wide characters doesn't detect #20