kwaping,
I doubt it. The barewords error only comes into play when you put a block around my_sort without the parens. It becomes ambigous to parser and the parens are needed to tell it that it is a function call. This doesn't explain (to me at least) why 
@data = map { join '/', @$_ } sort { my_sort() } @data; # works

@data = map { join '/', @$_ } sort my_sort @data; # breaks

[download]

Cheers - L~R

In reply to Re^2: Sorting, recursion, and tail-call optimizations by Limbic~Region
in thread Sorting, recursion, and tail-call optimizations by Limbic~Region

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