Daniel Ruoso asked: >> &prefix:<[+]> > > Is that really? I mean... [ ] is a meta-operator,
Sure. But once you "[]-meta" an infix operator, you get a prefix operator. See http://perlcabal.org/syn/S03.html#Reduction_operators, which states: "Any infix operator (except for non-associating operators) can be surrounded by square brackets in term position to create a list operator" and has an example of actually implementing the &prefix:<[+]> operator. Damian
