How are --exclude patterns interpreted?

[Tom Limoncelli <tal@whatexit.org>]

Does --exclude follow the same rules as rsync?  I couldn't find
explicit details in the man page for tarsnap or tarsnap.conf (or the
website).  Am I not looking in the right place?

In particular:
Suppose I have a filesystem /foo and don't want /foo/tmp to be
backuped.   Should I specify --exclude=foo/tmp or --exclude=/foo/tmp?
I can't use --exclude=tmp because there are other directories called
"tmp".

Thanks,
Tom

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Email: tal@whatexit.org
Skype: YesThatTom
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