Preserve attribute ordering in Haml

If I create an XML element in HAML:

%tag{:b => "b", :a开发者_C百科 => "a"}

I get this output:

<tag a="a" b="b"/>

Is it possible to keep the ordering of the attributes in HAML?

I need this for a client-side code to display values in certain order and don't want to pass extra information on the client just to maintain ordering.

It's not possible with HAML because it's a hash.