|Perl Monk, Perl Meditation|
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Yes, I'd expect "sort subname" to mean "sort the empty list with the comparison func subname" - because "sort bareword LIST" means sort the (possibly empty) list with bareword as a comparison func.
And I'd expect "sort subname()" to mean "invoke subname to get a list, to sort with the default comparator" - because I interpret "subname()" to always mean "invoke subname".
So I'd expect your first two examples to have different behaviour (but not the behaviour we get).
But I'm not sure my expectations are in line with "documented reality", so I'm loath to say there definitely is a bug.
I'm hoping to learn something in this thread :-)
In reply to Re^3: Sorting result of function call