-1 or other -x (negative numbers) in slices, can only work with commas, but not with ..

Nope. The point is that ".." counts up. These work: 

@letters = ('a'..'z');
say for @letters[-5..-1];
say for @letters[reverse(-1..0)];

[download]
perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

In reply to Re^3: Slicing an array variable with a -1 or any negative number doesn't work by shmem
in thread Slicing an array variable with a -1 or any negative number doesn't work by igoryonya

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