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in reply to RFC: Simple switches for 'sort' and list 'reverse'

> I'm not sure how, but sorting by $a + $b reverses a list.

Interestingly, it doesn't work under 

use sort '_quicksort';

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map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

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Re^2: RFC: Simple switches for 'sort' and numeric list 'reverse'
by rsFalse (Chaplain) on Mar 07, 2021 at 13:10 UTC
    Good observation!

    But also note that pragma '_quicksort' is undocumented e.g. in Perl 5.32 (5.32.0/sort). The information about default sorting algorithm seems to be absent in documentation*, sadly :(

    Upd. * It is absent in 5.32.0/sort and 5.32.0/functions/sort also, but it is documented in perlsec. I asked about it in an issue and later found that missing info sentence is going to be added into proper place IMO.
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