Stop Indenting the contents in textarea tag

[Udomomo]

I used textarea tag like below:

%textarea.myclass
    - trans "contents row1"
    - trans "contents row2"

But some indents appeared before each line.

In Ruby haml, this seems a well-known problem and official docs has a guide to avoid it.
http://haml.info/docs/yardoc/file.FAQ.html#how-do-i-stop-haml-from-indenting-the-contents-of-my-pre-and-textarea-tags
But is there's a similar way in django-hamlpy?