[TxMt] Using \z in Language Grammer

[Oliver Taylor]

Is it possible to use "\z" in the Language Grammer? I'm thinking like  
this:

	name = 'meta.test';
	match = '^(\t)(.+)(\n|\z)';
	captures = {
		1 = { name = 'whitespace'; };
		2 = { name = 'paragraph'; };
		3 = { name = 'end-of-line'; }; }

I know I can't currently do this, is it because I don't understand  
"\z" or because TextMate doesn't support it? If TM doesn't support  
it, why? (I think this would be really useful)
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