tsearch2 and wildcards/pattern matching?

Hi all,

Is there any sort of pattern matching or partial matching capability
in tsearch2?

I'd like to be able search for a common prefix (like for order
numbers). For instance, tsearch2 will index 'zvt123456' or
'zvt555555', but I'd like to be able to find both of them in one query
using something akin to 'zvt%', like

select * from attachments where textsearchable @@ 'zvt%';

I've been unable to find anything in documentation. If there's
anything in tsearch2 that can do this and is faster than LIKE clauses
on full-text, that would be fantastic.

Cheers,
Peter