On Tue, Mar 17, 2009 at 1:53 AM, Kathryn Andersen < [email protected]> wrote:
> ... Also I would have expected "+" to be use for union rather than > intersection, since with union you are "adding" two sets together. > How about using '+' for union and '^' for intersection? > Yes, you're right, '+' is a bad choice there. I think I might go back to what is more pmwiki-ish and keep just the comma for the union (name=a,b,c) and just the space for intersection (:pagelist term1 term2:). My thinking on the '+' was coming from the syntax some search engines use which marks required search terms with a +, but I think in this case it would cause more confusion than help... So in my experiment I'm going back to just a single operator for each function (comma=or, -=and not, space=and). -Peter
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