formattation breaks when encountering special strings

[masterkain]

Two examples:

    json.should match %r{^\{"user":\{}
    json.should match %r{"attr":#{@user.attr}}

It should be noted that the latter won't break if the use "", i.e.
json.should match %r{"attr":"#{@user.attr}"}

[mocoso]

A pull request to fix this would be welcomed but Code Beautifier currently identifies code blocks using regular expressions which makes fixing issues like this hard.

I am looking at replacing the parsing with a Ripper based system which should make fixes like this easy.