See the preprocess argument -- if you pass a code reference, it'll apply it to the list returned by readdir before calling your wanted coderef. Something like this, perhaps: 
find({ wanted => \&wanted, preprocess => sub {
    sort { -M $a <=> -M $b } @_;
},
}, '.');

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In reply to Re: Re: Re: How does find() build its tree. by chromatic
in thread How does find() build its tree. by Ras

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