[openbeos] queries on missing attributes

Is there a way to make queries on missing attributes? 

A query on foo=* currently excludes the filesystem entries completely 
missing the foo attribute. What I would like is being able to set a 
query to include only entries missing a certain attribute.

Suggested query substring to match entries
missing a certain attribute:   'foo!exist'

I have two queries:

New email
((MAIL:status=="New")
&&(MAIL:classification!="Spam"))

Spam
((MAIL:status=="New")
&&(MAIL:classification=="Spam"))


I'd like being able to have a query for Unclassified email,
which is missing the MAIL:classification attribute.

((MAIL:status=="New")
&&(MAIL:classification!exist))


/Jonas Sundström.               www.kirilla.com

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