[TxMt] scoping blank lines

In my language I'm using:

{ name = 'meta.blank.line'; match = '^\n'; },

which works great for identifying blank lines.

The problem comes when I get to the last line of the document. Textmate usually uses the character to the right of the caret for scoping, but when at the end of the document the scope switches to the left side of the caret. And because I'm on an empty line there's nothing to match.

So is it even possible to scope the last line of the document when it's empty?

I thought I had an answer with \z but Textmate doesn't seem to support \z in the language grammar - or maybe I'm using it totally wrong.

Any help is appreciated.

--oliver