Re^3: Prototype like sort()?

[Laurent_R]

Yes, right, this syntax allows only the block syntax, not the expression syntax. And I don't think there is any simple way to enable an expression syntax for such a sort subroutine (or for a custom clone of the map or grep functions).

But that does not deprive you of any functionality: any sort construct using the sort expression syntax can be easily transformed into a block syntax, essentially by adding a pair of curly brackets and removing the comma.