To me, it depends A LOT on what the function is being used for. The inconsistency within built in perl functions demonstrates this sort of dwimmery in action.
I tend to prefer the second option, though (return wantarray ? @ret : \@ret;) because I don't like the idea of discarding any data when scalar context is forced. The reference still behaves nicely in boolean context, but it contains all the information of the original array."
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