Simple matching question

Hi,

I'm writing some code to interpret MIME mails, and one of the things I
want to do is create a matcher if the content-type says "multipart/*
<garbage>" (multipart/alternative, multipart/mixed, multipart/related).
I've scanned the Scala book up and down and (blame me) can't find a
simple way to match on the beginning of a string save for the
'm','u','l',... Seq[Char] matching. Isn't there a simpler way?

TIA,

Cees